Change hard-coded references from blockstream.info to mempool.space

.gitattributes

@@ -1,3 +0,0 @@
-# ignore all differences in line endings
-package.json eol=crlf -crlf
-*/package.json eol=crlf -crlf

.github/FUNDING.yml

@@ -1,12 +0,0 @@
-# These are supported funding model platforms
-
-github: ['mempool'] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
-patreon: # Replace with a single Patreon username
-open_collective: # Replace with a single Open Collective username
-ko_fi: # Replace with a single Ko-fi username
-tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
-community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
-liberapay: # Replace with a single Liberapay username
-issuehunt: # Replace with a single IssueHunt username
-otechie: # Replace with a single Otechie username
-custom: ['https://mempool.space/sponsor'] # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/ISSUE_TEMPLATE.md

@@ -1,37 +0,0 @@
-<!--
-   SUPPORT REQUESTS: This is for reporting bugs in Mempool.
-   If you have a support request, please join our Keybase group:
-   https://keybase.io/team/mempool
--->
-
-### Description
-
-<!-- brief description of the bug -->
-
-#### Version
-
-<!-- commit id or version number -->
-
-### Steps to reproduce
-
-<!--if you can reliably reproduce the bug, list the steps here  -->
-
-### Expected behaviour
-
-<!--description of the expected behavior -->
-
-### Actual behaviour
-
-<!-- explain what happened instead of the expected behaviour -->
-
-### Screenshots
-
-<!--Screenshots if gui related, drag and drop to add to the issue -->
-
-#### Device or machine
-
-<!-- device/machine used, operating system -->
-
-#### Additional info
-
-<!-- Additional information useful for debugging (e.g. logs) -->

.github/workflows/cypress.yml

@@ -1,80 +0,0 @@
-name: Cypress Tests
-
-on: [push, pull_request]
-
-jobs:
-  cypress:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        containers: [1, 2, 3, 4, 5]
-        os: ["ubuntu-latest"]
-        browser: [chrome]
-    name: E2E tests on ${{ matrix.browser }} - ${{ matrix.os }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Setup node
-        uses: actions/setup-node@v2
-        with:
-          node-version: 16.10.0
-          cache: 'npm'
-          cache-dependency-path: frontend/package-lock.json
-      - name: ${{ matrix.browser }} browser tests (Mempool)
-        uses: cypress-io/github-action@v2
-        with:
-          working-directory: frontend
-          build: npm run config:defaults:mempool
-          start: npm run start:local-prod
-          wait-on: 'http://localhost:4200'
-          wait-on-timeout: 120
-          record: true
-          parallel: true
-          group: Tests on ${{ matrix.browser }} (Mempool)
-          browser: ${{ matrix.browser }}
-          ci-build-id: '${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}'
-        env:
-          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}
-
-      - name: ${{ matrix.browser }} browser tests (Liquid)
-        uses: cypress-io/github-action@v2
-        if: always()
-        with:
-          working-directory: frontend
-          build: npm run config:defaults:liquid
-          start: npm run start:local-prod
-          wait-on: 'http://localhost:4200'
-          wait-on-timeout: 120
-          record: true
-          parallel: true
-          spec: cypress/integration/liquid/liquid.spec.ts
-          group: Tests on ${{ matrix.browser }} (Liquid)
-          browser: ${{ matrix.browser }}
-          ci-build-id: '${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}'
-        env:
-          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}
-
-      - name: ${{ matrix.browser }} browser tests (Bisq)
-        uses: cypress-io/github-action@v2
-        if: always()
-        with:
-          working-directory: frontend
-          build: npm run config:defaults:bisq
-          start: npm run start:local-prod
-          wait-on: 'http://localhost:4200'
-          wait-on-timeout: 120
-          record: true
-          parallel: true
-          spec: cypress/integration/bisq/bisq.spec.ts
-          group: Tests on ${{ matrix.browser }} (Bisq)
-          browser: ${{ matrix.browser }}
-          ci-build-id: '${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}'
-        env:
-          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}

.github/workflows/on-tag.yml

@@ -1,72 +0,0 @@
-name: Docker build on tag
-env:
-  DOCKER_CLI_EXPERIMENTAL: enabled
-  TAG_FMT: '^refs/tags/(((.?[0-9]+){3,4}))$'
-  DOCKER_BUILDKIT: 0
-  COMPOSE_DOCKER_CLI_BUILD: 0
-
-on:
-  push:
-    tags:
-      - v[0-9]+.[0-9]+.[0-9]+
-      - v[0-9]+.[0-9]+.[0-9]+-*
-
-jobs:
-  build:
-    strategy:
-      matrix:
-        service:
-          - frontend
-          - backend
-    runs-on: ubuntu-18.04
-    name: Build and push to DockerHub
-    steps:
-      - name: Set env variables
-        run: echo "TAG=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
-
-      - name: Show set environment variables
-        run: |
-          printf "      TAG: %s\n"  "$TAG"
-      
-      - name: Add SHORT_SHA env property with commit short sha
-        run: echo "SHORT_SHA=`echo ${GITHUB_SHA} | cut -c1-8`" >> $GITHUB_ENV
-
-      - name: Login to Docker for building
-        run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
-
-      - name: Checkout project
-        uses: actions/checkout@v2
-
-      - name: Init repo for Dockerization
-        run: docker/init.sh "$TAG"
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-        id: qemu
-
-      - name: Setup Docker buildx action
-        uses: docker/setup-buildx-action@v1
-        id: buildx
-
-      - name: Available platforms
-        run: echo ${{ steps.buildx.outputs.platforms }}
-
-      - name: Cache Docker layers
-        uses: actions/cache@v2
-        id: cache
-        with:
-          path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-buildx-
-
-      - name: Run Docker buildx for ${{ matrix.service }} against tag
-        run: |
-          docker buildx build \
-          --cache-from "type=local,src=/tmp/.buildx-cache" \
-          --cache-to "type=local,dest=/tmp/.buildx-cache" \
-          --platform linux/amd64,linux/arm64,linux/arm/v7 \
-          --tag ${{ secrets.DOCKER_HUB_USER }}/${{ matrix.service }}:$TAG \
-          --tag ${{ secrets.DOCKER_HUB_USER }}/${{ matrix.service }}:latest \
-          --output "type=registry" ./${{ matrix.service }}/ \
-          --build-arg commitHash=$SHORT_SHA

.gitignore

@@ -1,4 +0,0 @@
-sitemap
-data
-docker-compose.yml
-backend/mempool-config.json

.nvmrc

@@ -1 +0,0 @@
-v16.10.0

.vscode/settings.json

@@ -1,4 +0,0 @@
-{
-  "editor.tabSize": 2,
-  "typescript.tsdk": "./backend/node_modules/typescript/lib"
-}

Dockerfile

@@ -0,0 +1,57 @@
+FROM alpine:latest
+
+RUN mkdir /mempool.space/
+COPY ./backend /mempool.space/backend/
+COPY ./frontend /mempool.space/frontend/
+COPY ./mariadb-structure.sql /mempool.space/mariadb-structure.sql
+
+RUN apk add mariadb mariadb-client git nginx npm rsync bash
+
+RUN mysql_install_db --user=mysql --datadir=/var/lib/mysql/
+RUN /usr/bin/mysqld_safe --datadir='/var/lib/mysql/'& \
+    sleep 60 && \
+    mysql -e "create database mempool" && \
+    mysql -e "grant all privileges on mempool.* to 'mempool'@'localhost' identified by 'mempool'" && \
+    mysql mempool < /mempool.space/mariadb-structure.sql
+RUN sed -i "/^skip-networking/ c#skip-networking" /etc/my.cnf.d/mariadb-server.cnf
+
+RUN export NG_CLI_ANALYTICS=ci && \
+    npm install -g typescript && \
+    cd /mempool.space/frontend && \
+    npm install && \
+    cd /mempool.space/backend && \
+    npm install && \
+    tsc
+
+COPY ./nginx-nossl-docker.conf /etc/nginx/nginx.conf
+    
+ENV ENV dev
+ENV DB_HOST localhost
+ENV DB_PORT 3306
+ENV DB_USER mempool
+ENV DB_PASSWORD mempool
+ENV DB_DATABASE mempool
+ENV API_ENDPOINT /api/v1/
+ENV CHAT_SSL_ENABLED false
+ENV MEMPOOL_REFRESH_RATE_MS 500
+ENV INITIAL_BLOCK_AMOUNT 8
+ENV DEFAULT_PROJECTED_BLOCKS_AMOUNT 3
+ENV KEEP_BLOCK_AMOUNT 24
+ENV BITCOIN_NODE_HOST bitcoinhost
+ENV BITCOIN_NODE_PORT 8332
+ENV BITCOIN_NODE_USER bitcoinuser
+ENV BITCOIN_NODE_PASS bitcoinpass
+ENV TX_PER_SECOND_SPAN_SECONDS 150
+ENV BACKEND_API bitcoind
+ENV ELECTRS_API_URL https://mempool.space/api
+
+RUN cd /mempool.space/frontend/ && \
+    npm run build && \
+    rsync -av --delete dist/mempool/ /var/www/html/
+
+EXPOSE 80
+
+COPY ./entrypoint.sh /mempool.space/entrypoint.sh
+RUN chmod +x /mempool.space/entrypoint.sh
+WORKDIR /mempool.space
+CMD ["/mempool.space/entrypoint.sh"]

GNUmakefile

@@ -1,48 +0,0 @@
-# If you see pwd_unknown showing up check permissions
-PWD ?= pwd_unknown
-
-# DATABASE DEPLOY FOLDER CONFIG - default ./data
-ifeq ($(data),)
-DATA := data
-export DATA
-else
-DATA := $(data)
-export DATA
-endif
-
-.PHONY: help
-help:
-	@echo ''
-	@echo ''
-	@echo '	Usage: make [COMMAND]'
-	@echo ''
-	@echo '		make all		# build init mempool and electrs'
-	@echo '		make init		# setup some useful configs'
-	@echo '		make mempool		# build q dockerized mempool.space'
-	@echo '		make electrs		# build a docker electrs image'
-	@echo ''
-
-.PHONY: init
-init:
-	@echo ''
-	mkdir -p   $(DATA) $(DATA)/mysql $(DATA)/mysql/db-scripts $(DATA)/mysql/data 
-	install -v mariadb-structure.sql $(DATA)/mysql/db-scripts
-	#REF: https://github.com/mempool/mempool/blob/master/docker/README.md
-	cat docker/docker-compose.yml > docker-compose.yml
-	cat backend/mempool-config.sample.json > backend/mempool-config.json
-.PHONY: mempool
-mempool: init
-	@echo ''
-	docker-compose up --force-recreate --always-recreate-deps
-	@echo ''
-.PHONY: electrs
-electrum:
-	#REF: https://hub.docker.com/r/beli/electrum
-	@echo ''
-	docker build -f docker/electrum/Dockerfile .
-	@echo ''
-.PHONY: all
-all: init
-	make mempool
-#######################
--include Makefile

LICENSE

@@ -1,29 +1,21 @@
-The Mempool Open Source Project
-Copyright (c) 2019-2021 The Mempool Open Source Project Developers
+MIT License
 
-This program is free software; you can redistribute it and/or modify it under
-the terms of (at your option) either:
+Copyright (c) 2019 Simon Lindh
 
- 1) the GNU Affero General Public License as published by the Free Software
- Foundation, either version 3 of the License or any later version approved by a
- proxy statement published on <https://mempool.space/about>; or
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
- 2) the GNU General Public License as published by the Free Software
- Foundation, either version 3 of the License or any later version approved by a
- proxy statement published on <https://mempool.space/about>.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
-However, this copyright license does not include an implied right or license to
-use our trademarks: The Mempool Open Source Project™, mempool.space™, the
-mempool Logo™, the mempool.space Vertical Logo™, the mempool.space Horizontal
-Logo™, the mempool Square Logo™, and the mempool Blocks logo™ are registered
-trademarks or trademarks of Mempool Space K.K in Japan, the United States,
-and/or other countries. See our full Trademark Policy and Guidelines for more
-details, published on <https://mempool.space/trademark-policy>.
-
-This program is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-PARTICULAR PURPOSE. See the full license terms for more details.
-
-You should have received a copy of both the GNU Affero General Public License
-and the GNU General Public License along with this program.  If not, see
-<http://www.gnu.org/licenses/>.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE.AGPL-3.md

@@ -1,660 +0,0 @@
-### GNU AFFERO GENERAL PUBLIC LICENSE
-
-Version 3, 19 November 2007
-
-Copyright (C) 2007 Free Software Foundation, Inc.
-<https://fsf.org/>
-
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
-
-### Preamble
-
-The GNU Affero General Public License is a free, copyleft license for
-software and other kinds of works, specifically designed to ensure
-cooperation with the community in the case of network server software.
-
-The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works. By contrast,
-our General Public Licenses are intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains
-free software for all its users.
-
-When we speak of free software, we are referring to freedom, not
-price. Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-Developers that use our General Public Licenses protect your rights
-with two steps: (1) assert copyright on the software, and (2) offer
-you this License which gives you legal permission to copy, distribute
-and/or modify the software.
-
-A secondary benefit of defending all users' freedom is that
-improvements made in alternate versions of the program, if they
-receive widespread use, become available for other developers to
-incorporate. Many developers of free software are heartened and
-encouraged by the resulting cooperation. However, in the case of
-software used on network servers, this result may fail to come about.
-The GNU General Public License permits making a modified version and
-letting the public access it on a server without ever releasing its
-source code to the public.
-
-The GNU Affero General Public License is designed specifically to
-ensure that, in such cases, the modified source code becomes available
-to the community. It requires the operator of a network server to
-provide the source code of the modified version running there to the
-users of that server. Therefore, public use of a modified version, on
-a publicly accessible server, gives the public access to the source
-code of the modified version.
-
-An older license, called the Affero General Public License and
-published by Affero, was designed to accomplish similar goals. This is
-a different license, not a version of the Affero GPL, but Affero has
-released a new version of the Affero GPL which permits relicensing
-under this license.
-
-The precise terms and conditions for copying, distribution and
-modification follow.
-
-### TERMS AND CONDITIONS
-
-#### 0. Definitions.
-
-"This License" refers to version 3 of the GNU Affero General Public
-License.
-
-"Copyright" also means copyright-like laws that apply to other kinds
-of works, such as semiconductor masks.
-
-"The Program" refers to any copyrightable work licensed under this
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-"recipients" may be individuals or organizations.
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-    with subsection 6b.
--   d) Convey the object code by offering access from a designated
-    place (gratis or for a charge), and offer equivalent access to the
-    Corresponding Source in the same way through the same place at no
-    further charge. You need not require recipients to copy the
-    Corresponding Source along with the object code. If the place to
-    copy the object code is a network server, the Corresponding Source
-    may be on a different server (operated by you or a third party)
-    that supports equivalent copying facilities, provided you maintain
-    clear directions next to the object code saying where to find the
-    Corresponding Source. Regardless of what server hosts the
-    Corresponding Source, you remain obligated to ensure that it is
-    available for as long as needed to satisfy these requirements.
--   e) Convey the object code using peer-to-peer transmission,
-    provided you inform other peers where the object code and
-    Corresponding Source of the work are being offered to the general
-    public at no charge under subsection 6d.
-
-A separable portion of the object code, whose source code is excluded
-from the Corresponding Source as a System Library, need not be
-included in conveying the object code work.
-
-A "User Product" is either (1) a "consumer product", which means any
-tangible personal property which is normally used for personal,
-family, or household purposes, or (2) anything designed or sold for
-incorporation into a dwelling. In determining whether a product is a
-consumer product, doubtful cases shall be resolved in favor of
-coverage. For a particular product received by a particular user,
-"normally used" refers to a typical or common use of that class of
-product, regardless of the status of the particular user or of the way
-in which the particular user actually uses, or expects or is expected
-to use, the product. A product is a consumer product regardless of
-whether the product has substantial commercial, industrial or
-non-consumer uses, unless such uses represent the only significant
-mode of use of the product.
-
-"Installation Information" for a User Product means any methods,
-procedures, authorization keys, or other information required to
-install and execute modified versions of a covered work in that User
-Product from a modified version of its Corresponding Source. The
-information must suffice to ensure that the continued functioning of
-the modified object code is in no case prevented or interfered with
-solely because modification has been made.
-
-If you convey an object code work under this section in, or with, or
-specifically for use in, a User Product, and the conveying occurs as
-part of a transaction in which the right of possession and use of the
-User Product is transferred to the recipient in perpetuity or for a
-fixed term (regardless of how the transaction is characterized), the
-Corresponding Source conveyed under this section must be accompanied
-by the Installation Information. But this requirement does not apply
-if neither you nor any third party retains the ability to install
-modified object code on the User Product (for example, the work has
-been installed in ROM).
-
-The requirement to provide Installation Information does not include a
-requirement to continue to provide support service, warranty, or
-updates for a work that has been modified or installed by the
-recipient, or for the User Product in which it has been modified or
-installed. Access to a network may be denied when the modification
-itself materially and adversely affects the operation of the network
-or violates the rules and protocols for communication across the
-network.
-
-Corresponding Source conveyed, and Installation Information provided,
-in accord with this section must be in a format that is publicly
-documented (and with an implementation available to the public in
-source code form), and must require no special password or key for
-unpacking, reading or copying.
-
-#### 7. Additional Terms.
-
-"Additional permissions" are terms that supplement the terms of this
-License by making exceptions from one or more of its conditions.
-Additional permissions that are applicable to the entire Program shall
-be treated as though they were included in this License, to the extent
-that they are valid under applicable law. If additional permissions
-apply only to part of the Program, that part may be used separately
-under those permissions, but the entire Program remains governed by
-this License without regard to the additional permissions.
-
-When you convey a copy of a covered work, you may at your option
-remove any additional permissions from that copy, or from any part of
-it. (Additional permissions may be written to require their own
-removal in certain cases when you modify the work.) You may place
-additional permissions on material, added by you to a covered work,
-for which you have or can give appropriate copyright permission.
-
-Notwithstanding any other provision of this License, for material you
-add to a covered work, you may (if authorized by the copyright holders
-of that material) supplement the terms of this License with terms:
-
--   a) Disclaiming warranty or limiting liability differently from the
-    terms of sections 15 and 16 of this License; or
--   b) Requiring preservation of specified reasonable legal notices or
-    author attributions in that material or in the Appropriate Legal
-    Notices displayed by works containing it; or
--   c) Prohibiting misrepresentation of the origin of that material,
-    or requiring that modified versions of such material be marked in
-    reasonable ways as different from the original version; or
--   d) Limiting the use for publicity purposes of names of licensors
-    or authors of the material; or
--   e) Declining to grant rights under trademark law for use of some
-    trade names, trademarks, or service marks; or
--   f) Requiring indemnification of licensors and authors of that
-    material by anyone who conveys the material (or modified versions
-    of it) with contractual assumptions of liability to the recipient,
-    for any liability that these contractual assumptions directly
-    impose on those licensors and authors.
-
-All other non-permissive additional terms are considered "further
-restrictions" within the meaning of section 10. If the Program as you
-received it, or any part of it, contains a notice stating that it is
-governed by this License along with a term that is a further
-restriction, you may remove that term. If a license document contains
-a further restriction but permits relicensing or conveying under this
-License, you may add to a covered work material governed by the terms
-of that license document, provided that the further restriction does
-not survive such relicensing or conveying.
-
-If you add terms to a covered work in accord with this section, you
-must place, in the relevant source files, a statement of the
-additional terms that apply to those files, or a notice indicating
-where to find the applicable terms.
-
-Additional terms, permissive or non-permissive, may be stated in the
-form of a separately written license, or stated as exceptions; the
-above requirements apply either way.
-
-#### 8. Termination.
-
-You may not propagate or modify a covered work except as expressly
-provided under this License. Any attempt otherwise to propagate or
-modify it is void, and will automatically terminate your rights under
-this License (including any patent licenses granted under the third
-paragraph of section 11).
-
-However, if you cease all violation of this License, then your license
-from a particular copyright holder is reinstated (a) provisionally,
-unless and until the copyright holder explicitly and finally
-terminates your license, and (b) permanently, if the copyright holder
-fails to notify you of the violation by some reasonable means prior to
-60 days after the cessation.
-
-Moreover, your license from a particular copyright holder is
-reinstated permanently if the copyright holder notifies you of the
-violation by some reasonable means, this is the first time you have
-received notice of violation of this License (for any work) from that
-copyright holder, and you cure the violation prior to 30 days after
-your receipt of the notice.
-
-Termination of your rights under this section does not terminate the
-licenses of parties who have received copies or rights from you under
-this License. If your rights have been terminated and not permanently
-reinstated, you do not qualify to receive new licenses for the same
-material under section 10.
-
-#### 9. Acceptance Not Required for Having Copies.
-
-You are not required to accept this License in order to receive or run
-a copy of the Program. Ancillary propagation of a covered work
-occurring solely as a consequence of using peer-to-peer transmission
-to receive a copy likewise does not require acceptance. However,
-nothing other than this License grants you permission to propagate or
-modify any covered work. These actions infringe copyright if you do
-not accept this License. Therefore, by modifying or propagating a
-covered work, you indicate your acceptance of this License to do so.
-
-#### 10. Automatic Licensing of Downstream Recipients.
-
-Each time you convey a covered work, the recipient automatically
-receives a license from the original licensors, to run, modify and
-propagate that work, subject to this License. You are not responsible
-for enforcing compliance by third parties with this License.
-
-An "entity transaction" is a transaction transferring control of an
-organization, or substantially all assets of one, or subdividing an
-organization, or merging organizations. If propagation of a covered
-work results from an entity transaction, each party to that
-transaction who receives a copy of the work also receives whatever
-licenses to the work the party's predecessor in interest had or could
-give under the previous paragraph, plus a right to possession of the
-Corresponding Source of the work from the predecessor in interest, if
-the predecessor has it or can get it with reasonable efforts.
-
-You may not impose any further restrictions on the exercise of the
-rights granted or affirmed under this License. For example, you may
-not impose a license fee, royalty, or other charge for exercise of
-rights granted under this License, and you may not initiate litigation
-(including a cross-claim or counterclaim in a lawsuit) alleging that
-any patent claim is infringed by making, using, selling, offering for
-sale, or importing the Program or any portion of it.
-
-#### 11. Patents.
-
-A "contributor" is a copyright holder who authorizes use under this
-License of the Program or a work on which the Program is based. The
-work thus licensed is called the contributor's "contributor version".
-
-A contributor's "essential patent claims" are all patent claims owned
-or controlled by the contributor, whether already acquired or
-hereafter acquired, that would be infringed by some manner, permitted
-by this License, of making, using, or selling its contributor version,
-but do not include claims that would be infringed only as a
-consequence of further modification of the contributor version. For
-purposes of this definition, "control" includes the right to grant
-patent sublicenses in a manner consistent with the requirements of
-this License.
-
-Each contributor grants you a non-exclusive, worldwide, royalty-free
-patent license under the contributor's essential patent claims, to
-make, use, sell, offer for sale, import and otherwise run, modify and
-propagate the contents of its contributor version.
-
-In the following three paragraphs, a "patent license" is any express
-agreement or commitment, however denominated, not to enforce a patent
-(such as an express permission to practice a patent or covenant not to
-sue for patent infringement). To "grant" such a patent license to a
-party means to make such an agreement or commitment not to enforce a
-patent against the party.
-
-If you convey a covered work, knowingly relying on a patent license,
-and the Corresponding Source of the work is not available for anyone
-to copy, free of charge and under the terms of this License, through a
-publicly available network server or other readily accessible means,
-then you must either (1) cause the Corresponding Source to be so
-available, or (2) arrange to deprive yourself of the benefit of the
-patent license for this particular work, or (3) arrange, in a manner
-consistent with the requirements of this License, to extend the patent
-license to downstream recipients. "Knowingly relying" means you have
-actual knowledge that, but for the patent license, your conveying the
-covered work in a country, or your recipient's use of the covered work
-in a country, would infringe one or more identifiable patents in that
-country that you have reason to believe are valid.
-
-If, pursuant to or in connection with a single transaction or
-arrangement, you convey, or propagate by procuring conveyance of, a
-covered work, and grant a patent license to some of the parties
-receiving the covered work authorizing them to use, propagate, modify
-or convey a specific copy of the covered work, then the patent license
-you grant is automatically extended to all recipients of the covered
-work and works based on it.
-
-A patent license is "discriminatory" if it does not include within the
-scope of its coverage, prohibits the exercise of, or is conditioned on
-the non-exercise of one or more of the rights that are specifically
-granted under this License. You may not convey a covered work if you
-are a party to an arrangement with a third party that is in the
-business of distributing software, under which you make payment to the
-third party based on the extent of your activity of conveying the
-work, and under which the third party grants, to any of the parties
-who would receive the covered work from you, a discriminatory patent
-license (a) in connection with copies of the covered work conveyed by
-you (or copies made from those copies), or (b) primarily for and in
-connection with specific products or compilations that contain the
-covered work, unless you entered into that arrangement, or that patent
-license was granted, prior to 28 March 2007.
-
-Nothing in this License shall be construed as excluding or limiting
-any implied license or other defenses to infringement that may
-otherwise be available to you under applicable patent law.
-
-#### 12. No Surrender of Others' Freedom.
-
-If conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License. If you cannot convey a
-covered work so as to satisfy simultaneously your obligations under
-this License and any other pertinent obligations, then as a
-consequence you may not convey it at all. For example, if you agree to
-terms that obligate you to collect a royalty for further conveying
-from those to whom you convey the Program, the only way you could
-satisfy both those terms and this License would be to refrain entirely
-from conveying the Program.
-
-#### 13. Remote Network Interaction; Use with the GNU General Public License.
-
-Notwithstanding any other provision of this License, if you modify the
-Program, your modified version must prominently offer all users
-interacting with it remotely through a computer network (if your
-version supports such interaction) an opportunity to receive the
-Corresponding Source of your version by providing access to the
-Corresponding Source from a network server at no charge, through some
-standard or customary means of facilitating copying of software. This
-Corresponding Source shall include the Corresponding Source for any
-work covered by version 3 of the GNU General Public License that is
-incorporated pursuant to the following paragraph.
-
-Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU General Public License into a single
-combined work, and to convey the resulting work. The terms of this
-License will continue to apply to the part which is the covered work,
-but the work with which it is combined will remain governed by version
-3 of the GNU General Public License.
-
-#### 14. Revised Versions of this License.
-
-The Free Software Foundation may publish revised and/or new versions
-of the GNU Affero General Public License from time to time. Such new
-versions will be similar in spirit to the present version, but may
-differ in detail to address new problems or concerns.
-
-Each version is given a distinguishing version number. If the Program
-specifies that a certain numbered version of the GNU Affero General
-Public License "or any later version" applies to it, you have the
-option of following the terms and conditions either of that numbered
-version or of any later version published by the Free Software
-Foundation. If the Program does not specify a version number of the
-GNU Affero General Public License, you may choose any version ever
-published by the Free Software Foundation.
-
-If the Program specifies that a proxy can decide which future versions
-of the GNU Affero General Public License can be used, that proxy's
-public statement of acceptance of a version permanently authorizes you
-to choose that version for the Program.
-
-Later license versions may give you additional or different
-permissions. However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
-
-#### 15. Disclaimer of Warranty.
-
-THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
-WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
-PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
-DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
-CORRECTION.
-
-#### 16. Limitation of Liability.
-
-IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
-CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
-ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
-NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
-LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
-TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
-PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
-
-#### 17. Interpretation of Sections 15 and 16.
-
-If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-END OF TERMS AND CONDITIONS
-
-### How to Apply These Terms to Your New Programs
-
-If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these
-terms.
-
-To do so, attach the following notices to the program. It is safest to
-attach them to the start of each source file to most effectively state
-the exclusion of warranty; and each file should have at least the
-"copyright" line and a pointer to where the full notice is found.
-
-        <one line to give the program's name and a brief idea of what it does.>
-        Copyright (C) <year>  <name of author>
-
-        This program is free software: you can redistribute it and/or modify
-        it under the terms of the GNU Affero General Public License as
-        published by the Free Software Foundation, either version 3 of the
-        License, or (at your option) any later version.
-
-        This program is distributed in the hope that it will be useful,
-        but WITHOUT ANY WARRANTY; without even the implied warranty of
-        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-        GNU Affero General Public License for more details.
-
-        You should have received a copy of the GNU Affero General Public License
-        along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper
-mail.
-
-If your software can interact with users remotely through a computer
-network, you should also make sure that it provides a way for users to
-get its source. For example, if your program is a web application, its
-interface could display a "Source" link that leads users to an archive
-of the code. There are many ways you could offer source, and different
-solutions will be better for different programs; see section 13 for
-the specific requirements.
-
-You should also get your employer (if you work as a programmer) or
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary. For more information on this, and how to apply and follow
-the GNU AGPL, see <https://www.gnu.org/licenses/>.

LICENSE.GPL-3.md

@@ -1,675 +0,0 @@
-### GNU GENERAL PUBLIC LICENSE
-
-Version 3, 29 June 2007
-
-Copyright (C) 2007 Free Software Foundation, Inc.
-<https://fsf.org/>
-
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
-
-### Preamble
-
-The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works. By contrast,
-the GNU General Public License is intended to guarantee your freedom
-to share and change all versions of a program--to make sure it remains
-free software for all its users. We, the Free Software Foundation, use
-the GNU General Public License for most of our software; it applies
-also to any other work released this way by its authors. You can apply
-it to your programs, too.
-
-When we speak of free software, we are referring to freedom, not
-price. Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights. Therefore, you
-have certain responsibilities if you distribute copies of the
-software, or if you modify it: responsibilities to respect the freedom
-of others.
-
-For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must pass on to the recipients the same
-freedoms that you received. You must make sure that they, too, receive
-or can get the source code. And you must show them these terms so they
-know their rights.
-
-Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
-giving you legal permission to copy, distribute and/or modify it.
-
-For the developers' and authors' protection, the GPL clearly explains
-that there is no warranty for this free software. For both users' and
-authors' sake, the GPL requires that modified versions be marked as
-changed, so that their problems will not be attributed erroneously to
-authors of previous versions.
-
-Some devices are designed to deny users access to install or run
-modified versions of the software inside them, although the
-manufacturer can do so. This is fundamentally incompatible with the
-aim of protecting users' freedom to change the software. The
-systematic pattern of such abuse occurs in the area of products for
-individuals to use, which is precisely where it is most unacceptable.
-Therefore, we have designed this version of the GPL to prohibit the
-practice for those products. If such problems arise substantially in
-other domains, we stand ready to extend this provision to those
-domains in future versions of the GPL, as needed to protect the
-freedom of users.
-
-Finally, every program is threatened constantly by software patents.
-States should not allow patents to restrict development and use of
-software on general-purpose computers, but in those that do, we wish
-to avoid the special danger that patents applied to a free program
-could make it effectively proprietary. To prevent this, the GPL
-assures that patents cannot be used to render the program non-free.
-
-The precise terms and conditions for copying, distribution and
-modification follow.
-
-### TERMS AND CONDITIONS
-
-#### 0. Definitions.
-
-"This License" refers to version 3 of the GNU General Public License.
-
-"Copyright" also means copyright-like laws that apply to other kinds
-of works, such as semiconductor masks.
-
-"The Program" refers to any copyrightable work licensed under this
-License. Each licensee is addressed as "you". "Licensees" and
-"recipients" may be individuals or organizations.
-
-To "modify" a work means to copy from or adapt all or part of the work
-in a fashion requiring copyright permission, other than the making of
-an exact copy. The resulting work is called a "modified version" of
-the earlier work or a work "based on" the earlier work.
-
-A "covered work" means either the unmodified Program or a work based
-on the Program.
-
-To "propagate" a work means to do anything with it that, without
-permission, would make you directly or secondarily liable for
-infringement under applicable copyright law, except executing it on a
-computer or modifying a private copy. Propagation includes copying,
-distribution (with or without modification), making available to the
-public, and in some countries other activities as well.
-
-To "convey" a work means any kind of propagation that enables other
-parties to make or receive copies. Mere interaction with a user
-through a computer network, with no transfer of a copy, is not
-conveying.
-
-An interactive user interface displays "Appropriate Legal Notices" to
-the extent that it includes a convenient and prominently visible
-feature that (1) displays an appropriate copyright notice, and (2)
-tells the user that there is no warranty for the work (except to the
-extent that warranties are provided), that licensees may convey the
-work under this License, and how to view a copy of this License. If
-the interface presents a list of user commands or options, such as a
-menu, a prominent item in the list meets this criterion.
-
-#### 1. Source Code.
-
-The "source code" for a work means the preferred form of the work for
-making modifications to it. "Object code" means any non-source form of
-a work.
-
-A "Standard Interface" means an interface that either is an official
-standard defined by a recognized standards body, or, in the case of
-interfaces specified for a particular programming language, one that
-is widely used among developers working in that language.
-
-The "System Libraries" of an executable work include anything, other
-than the work as a whole, that (a) is included in the normal form of
-packaging a Major Component, but which is not part of that Major
-Component, and (b) serves only to enable use of the work with that
-Major Component, or to implement a Standard Interface for which an
-implementation is available to the public in source code form. A
-"Major Component", in this context, means a major essential component
-(kernel, window system, and so on) of the specific operating system
-(if any) on which the executable work runs, or a compiler used to
-produce the work, or an object code interpreter used to run it.
-
-The "Corresponding Source" for a work in object code form means all
-the source code needed to generate, install, and (for an executable
-work) run the object code and to modify the work, including scripts to
-control those activities. However, it does not include the work's
-System Libraries, or general-purpose tools or generally available free
-programs which are used unmodified in performing those activities but
-which are not part of the work. For example, Corresponding Source
-includes interface definition files associated with source files for
-the work, and the source code for shared libraries and dynamically
-linked subprograms that the work is specifically designed to require,
-such as by intimate data communication or control flow between those
-subprograms and other parts of the work.
-
-The Corresponding Source need not include anything that users can
-regenerate automatically from other parts of the Corresponding Source.
-
-The Corresponding Source for a work in source code form is that same
-work.
-
-#### 2. Basic Permissions.
-
-All rights granted under this License are granted for the term of
-copyright on the Program, and are irrevocable provided the stated
-conditions are met. This License explicitly affirms your unlimited
-permission to run the unmodified Program. The output from running a
-covered work is covered by this License only if the output, given its
-content, constitutes a covered work. This License acknowledges your
-rights of fair use or other equivalent, as provided by copyright law.
-
-You may make, run and propagate covered works that you do not convey,
-without conditions so long as your license otherwise remains in force.
-You may convey covered works to others for the sole purpose of having
-them make modifications exclusively for you, or provide you with
-facilities for running those works, provided that you comply with the
-terms of this License in conveying all material for which you do not
-control copyright. Those thus making or running the covered works for
-you must do so exclusively on your behalf, under your direction and
-control, on terms that prohibit them from making any copies of your
-copyrighted material outside their relationship with you.
-
-Conveying under any other circumstances is permitted solely under the
-conditions stated below. Sublicensing is not allowed; section 10 makes
-it unnecessary.
-
-#### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
-
-No covered work shall be deemed part of an effective technological
-measure under any applicable law fulfilling obligations under article
-11 of the WIPO copyright treaty adopted on 20 December 1996, or
-similar laws prohibiting or restricting circumvention of such
-measures.
-
-When you convey a covered work, you waive any legal power to forbid
-circumvention of technological measures to the extent such
-circumvention is effected by exercising rights under this License with
-respect to the covered work, and you disclaim any intention to limit
-operation or modification of the work as a means of enforcing, against
-the work's users, your or third parties' legal rights to forbid
-circumvention of technological measures.
-
-#### 4. Conveying Verbatim Copies.
-
-You may convey verbatim copies of the Program's source code as you
-receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy an appropriate copyright notice;
-keep intact all notices stating that this License and any
-non-permissive terms added in accord with section 7 apply to the code;
-keep intact all notices of the absence of any warranty; and give all
-recipients a copy of this License along with the Program.
-
-You may charge any price or no price for each copy that you convey,
-and you may offer support or warranty protection for a fee.
-
-#### 5. Conveying Modified Source Versions.
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-You may convey a work based on the Program, or the modifications to
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Makefile

@@ -1 +0,0 @@
-# For additional configs/scripting

README.md

@@ -1,60 +1,99 @@
-# The Mempool Open Source Project™
+# mempool
+## a mempool visualizer and explorer for Bitcoin
 
-Mempool is the fully featured visualizer, explorer, and API service running on [mempool.space](https://mempool.space/), an open source project developed and operated for the benefit of the Bitcoin community, with a focus on the emerging transaction fee market to help our transition into a multi-layer ecosystem.
+![mempool](https://pbs.twimg.com/media/EAETXWCU4AAv2v-?format=jpg&name=4096x4096)
+![blockchain](https://pbs.twimg.com/media/EAETXWAU8AAj4IP?format=jpg&name=4096x4096)
 
-![mempool](https://mempool.space/resources/screenshots/v2.3.0-dashboard.png)
+## Pick the right version for your use case
 
-## Installation Methods
+Mempool V1 has basic explorer functionality and can run from a Bitcoin Core full node on a Raspberry Pi (no pruning, txindex=1).
 
-Mempool can be self-hosted on a wide variety of your own hardware, ranging from a simple one-click installation on a Raspberry Pi distro, all the way to an advanced high availability cluster of powerful servers for a production instance. We support the following installation methods, ranked in order from simple to advanced:
+Mempool V2 is what runs on https://mempool.space and has advanced explorer functionality, but requires a fully synced electrs backend running on powerful server hardware.
 
-1) One-click installation on: [Umbrel](https://github.com/getumbrel/umbrel), [RaspiBlitz](https://github.com/rootzoll/raspiblitz), [RoninDojo](https://code.samourai.io/ronindojo/RoninDojo), or [MyNode](https://github.com/mynodebtc/mynode).
-2) [Docker installation on Linux using docker-compose](https://github.com/mempool/mempool/tree/master/docker)
-3) [Manual installation on Linux or FreeBSD](https://github.com/mempool/mempool#manual-installation)
-4) [Production installation on a powerful FreeBSD server](https://github.com/mempool/mempool/tree/master/production)
-5) [High Availability cluster using powerful FreeBSD servers](https://github.com/mempool/mempool/tree/master/production#high-availability)
+# Mempool V1 using Docker (easy)
 
-# Manual Installation
+Install from Docker Hub, passing your Bitcoin Core RPC credentials as environment variables:
 
-The following instructions are for a manual installation on Linux or FreeBSD. The file and directory paths may need to be changed to match your OS.
+```bash
+docker pull mempool/mempool:v1.0
+docker create -p 80:80 -e BITCOIN_NODE_HOST=192.168.1.102 -e BITCOIN_NODE_USER=foo -e BITCOIN_NODE_PASS=bar --name mempool mempool/mempool:v1.0
+docker start mempool
+docker logs mempool
+```
+
+You should see mempool starting up, which takes over an hour (needs 8 blocks). When it's ready, visit http://127.0.0.1/ to see your mempool.
+
+# Mempool V1 not using Docker (advanced)
 
 ## Dependencies
 
-* [Bitcoin](https://github.com/bitcoin/bitcoin)
-* [Electrum](https://github.com/romanz/electrs)
-* [NodeJS](https://github.com/nodejs/node)
-* [MariaDB](https://github.com/mariadb/server)
-* [Nginx](https://github.com/nginx/nginx)
+* Bitcoin (full node required, no pruning, txindex=1)
+* NodeJS (official stable LTS)
+* MySQL or MariaDB (default config)
+* Nginx (use supplied nginx.conf)
 
-## Mempool
-
-Clone the mempool repo, and checkout the latest release tag:
+## Checking out release tag
 ```bash
-  git clone https://github.com/mempool/mempool
-  cd mempool
-  latestrelease=$(curl -s https://api.github.com/repos/mempool/mempool/releases/latest|grep tag_name|head -1|cut -d '"' -f4)
-  git checkout $latestrelease
+  git clone https://github.com/mempool-space/mempool.space
+  cd mempool.space
+  git checkout v1.0.0 # put latest release tag here
 ```
 
 ## Bitcoin Core (bitcoind)
 
-Enable RPC and txindex in `bitcoin.conf`:
+Enable RPC and txindex in bitcoin.conf
+
 ```bash
   rpcuser=mempool
-  rpcpassword=mempool
+  rpcpassword=71b61986da5b03a5694d7c7d5165ece5
   txindex=1
 ```
 
+## NodeJS
+
+Install dependencies and build code:
+
+```bash
+  # Install TypeScript Globally
+  npm install -g typescript
+
+  # Frontend
+  cd frontend
+  npm install
+  npm run build
+
+  # Backend
+  cd ../backend/
+  npm install
+  npm run build
+```
+
+## Mempool Configuration
+In the `backend` folder, make a copy of the sample config and modify it to fit your settings.
+
+```bash
+  cp mempool-config.sample.json mempool-config.json
+```
+
+Edit `mempool-config.json` to add your Bitcoin Core node RPC credentials:
+```bash
+  "BITCOIN_NODE_HOST": "192.168.1.5",
+  "BITCOIN_NODE_PORT": 8332,
+  "BITCOIN_NODE_USER": "mempool",
+  "BITCOIN_NODE_PASS": "71b61986da5b03a5694d7c7d5165ece5",
+```
+
 ## MySQL
 
-Install MariaDB from OS package manager:
+Install MariaDB:
+
 ```bash
   # Linux
   apt-get install mariadb-server mariadb-client
 
   # macOS
   brew install mariadb
-  mysql.server start
+  brew services start mariadb
 ```
 
 Create database and grant privileges:
@@ -65,68 +104,51 @@ Create database and grant privileges:
   MariaDB [(none)]> create database mempool;
   Query OK, 1 row affected (0.00 sec)
 
-  MariaDB [(none)]> grant all privileges on mempool.* to 'mempool'@'%' identified by 'mempool';
+  MariaDB [(none)]> grant all privileges on mempool.* to 'mempool' identified by 'mempool';
   Query OK, 0 rows affected (0.00 sec)
 ```
 
-From the mempool repo's top-level folder, import the database structure:
+From the root folder, initialize database structure:
+
 ```bash
   mysql -u mempool -p mempool < mariadb-structure.sql
 ```
 
-## Mempool Backend
-Install mempool dependencies from npm and build the backend:
+## Running (Backend)
+
+Create an initial empty cache and start the app:
 
 ```bash
-  # backend
-  cd backend
-  npm install --prod
-  npm run build
+  touch cache.json
+  npm run start # node dist/index.js
 ```
 
-In the `backend` folder, make a copy of the sample config and modify it to fit your settings.
+After starting you should see:
 
 ```bash
-  cp mempool-config.sample.json mempool-config.json
+  Server started on port 8999 :)
+  New block found (#586498)! 0 of 1986 found in mempool. 1985 not found.
+  New block found (#586499)! 0 of 1094 found in mempool. 1093 not found.
+  New block found (#586500)! 0 of 2735 found in mempool. 2734 not found.
+  New block found (#586501)! 0 of 2675 found in mempool. 2674 not found.
+  New block found (#586502)! 0 of 975 found in mempool. 974 not found.
+  New block found (#586503)! 0 of 2130 found in mempool. 2129 not found.
+  New block found (#586504)! 0 of 2770 found in mempool. 2769 not found.
+  New block found (#586505)! 0 of 2759 found in mempool. 2758 not found.
+  Updating mempool
+  Calculated fee for transaction 1 / 3257
+  Calculated fee for transaction 2 / 3257
+  Calculated fee for transaction 3 / 3257
+  Calculated fee for transaction 4 / 3257
+  Calculated fee for transaction 5 / 3257
+  Calculated fee for transaction 6 / 3257
+  Calculated fee for transaction 7 / 3257
+  Calculated fee for transaction 8 / 3257
+  Calculated fee for transaction 9 / 3257
 ```
-
-Edit `mempool-config.json` to add your Bitcoin Core node RPC credentials:
-```bash
-{
-  "MEMPOOL": {
-    "NETWORK": "mainnet",
-    "BACKEND": "electrum",
-    "HTTP_PORT": 8999
-  },
-  "CORE_RPC": {
-    "HOST": "127.0.0.1",
-    "PORT": 8332,
-    "USERNAME": "mempool",
-    "PASSWORD": "mempool"
-  },
-  "ELECTRUM": {
-    "HOST": "127.0.0.1",
-    "PORT": 50002,
-    "TLS_ENABLED": true
-  },
-  "DATABASE": {
-    "ENABLED": true,
-    "HOST": "127.0.0.1",
-    "PORT": 3306,
-    "USERNAME": "mempool",
-    "PASSWORD": "mempool",
-    "DATABASE": "mempool"
-  }
-}
-```
-
-Start the backend:
-
-```bash
-  npm run start
-```
-
-When it's running you should see output like this:
+You need to wait for at least *8 blocks to be mined*, so please wait ~80 minutes.
+The backend also needs to index transactions, calculate fees, etc.
+When it's ready you will see output like this:
 
 ```bash
   Mempool updated in 0.189 seconds
@@ -149,38 +171,36 @@ When it's running you should see output like this:
   Updating mempool
 ```
 
-## Mempool Frontend
-
-Install mempool dependencies from npm and build the frontend static HTML/CSS/JS:
-
-```bash
-  # frontend
-  cd frontend
-  npm install --prod
-  npm run build
-```
-
-Install the output into nginx webroot folder:
-
-```bash
-  sudo rsync -av --delete dist/mempool/ /var/www/
-```
-
-## nginx + certbot
-
-Install the supplied nginx.conf and nginx-mempool.conf in /etc/nginx
+## nginx + CertBot (LetsEncrypt)
+Setup nginx using the supplied nginx.conf
 
 ```bash
   # install nginx and certbot
-  apt-get install -y nginx python3-certbot-nginx
-
-  # install the mempool configuration for nginx
-  cp nginx.conf nginx-mempool.conf /etc/nginx/
+  apt-get install -y nginx python-certbot-nginx
 
   # replace example.com with your domain name
   certbot --nginx -d example.com
 
+  # install the mempool configuration for nginx
+  cp nginx.conf /etc/nginx/nginx.conf
+
+  # edit the installed nginx.conf, and replace all
+  # instances of example.com with your domain name
 ```
+Make sure you can access https://<your-domain-name>/ in browser before proceeding
+
+
+## Running (Frontend)
+
+Build the frontend static HTML/CSS/JS, rsync the output into nginx folder:
+
+```bash
+  cd frontend/
+  npm run build
+  sudo rsync -av --delete dist/mempool/ /var/www/html/
+```
+
+## Try It Out
 
 If everything went okay you should see the beautiful mempool :grin:
 

backend/.gitignore

@@ -41,3 +41,5 @@ testem.log
 #System Files
 .DS_Store
 Thumbs.db
+
+cache.json

backend/.vscode/settings.json

@@ -1,4 +0,0 @@
-{
-  "editor.tabSize": 2,
-  "typescript.tsdk": "../backend/node_modules/typescript/lib"
-}

backend/cache/.gitignore

@@ -1 +0,0 @@
-*.json

backend/mempool-config.sample.json

@@ -1,61 +1,25 @@
 {
-  "MEMPOOL": {
-    "NETWORK": "mainnet",
-    "BACKEND": "electrum",
-    "HTTP_PORT": 8999,
-    "SPAWN_CLUSTER_PROCS": 0,
-    "API_URL_PREFIX": "/api/v1/",
-    "POLL_RATE_MS": 2000,
-    "CACHE_DIR": "./cache",
-    "CLEAR_PROTECTION_MINUTES": 20,
-    "RECOMMENDED_FEE_PERCENTILE": 50,
-    "BLOCK_WEIGHT_UNITS": 4000000,
-    "INITIAL_BLOCKS_AMOUNT": 8,
-    "MEMPOOL_BLOCKS_AMOUNT": 8,
-    "PRICE_FEED_UPDATE_INTERVAL": 3600,
-    "USE_SECOND_NODE_FOR_MINFEE": false
-  },
-  "CORE_RPC": {
-    "HOST": "127.0.0.1",
-    "PORT": 8332,
-    "USERNAME": "mempool",
-    "PASSWORD": "mempool"
-  },
-  "ELECTRUM": {
-    "HOST": "127.0.0.1",
-    "PORT": 50002,
-    "TLS_ENABLED": true
-  },
-  "ESPLORA": {
-    "REST_API_URL": "http://127.0.0.1:3000"
-  },
-  "SECOND_CORE_RPC": {
-    "HOST": "127.0.0.1",
-    "PORT": 8332,
-    "USERNAME": "mempool",
-    "PASSWORD": "mempool"
-  },
-  "DATABASE": {
-    "ENABLED": true,
-    "HOST": "127.0.0.1",
-    "PORT": 3306,
-    "DATABASE": "mempool",
-    "USERNAME": "mempool",
-    "PASSWORD": "mempool"
-  },
-  "SYSLOG": {
-    "ENABLED": true,
-    "HOST": "127.0.0.1",
-    "PORT": 514,
-    "MIN_PRIORITY": "info",
-    "FACILITY": "local7"
-  },
-  "STATISTICS": {
-    "ENABLED": true,
-    "TX_PER_SECOND_SAMPLE_PERIOD": 150
-  },
-  "BISQ": {
-    "ENABLED": false,
-    "DATA_PATH": "/bisq/statsnode-data/btc_mainnet/db"
-  }
+  "ENV": "dev",
+  "DB_HOST": "localhost",
+  "DB_PORT": 3306,
+  "DB_USER": "mempool",
+  "DB_PASSWORD": "mempool",
+  "DB_DATABASE": "mempool",
+  "HTTP_PORT": 3000,
+  "API_ENDPOINT": "/api/v1/",
+  "CHAT_SSL_ENABLED": false,
+  "CHAT_SSL_PRIVKEY": "",
+  "CHAT_SSL_CERT": "",
+  "CHAT_SSL_CHAIN": "",
+  "MEMPOOL_REFRESH_RATE_MS": 500,
+  "INITIAL_BLOCK_AMOUNT": 8,
+  "DEFAULT_PROJECTED_BLOCKS_AMOUNT": 3,
+  "KEEP_BLOCK_AMOUNT": 24,
+  "BITCOIN_NODE_HOST": "localhost",
+  "BITCOIN_NODE_PORT": 8332,
+  "BITCOIN_NODE_USER": "",
+  "BITCOIN_NODE_PASS": "",
+  "BACKEND_API": "bitcoind",
+  "ELECTRS_API_URL": "https://mempool.space/api",
+  "TX_PER_SECOND_SPAN_SECONDS": 150
 }

backend/package.json

@@ -1,50 +1,31 @@
 {
   "name": "mempool-backend",
-  "version": "2.3.0-dev",
-  "description": "Bitcoin mempool visualizer and blockchain explorer backend",
-  "license": "GNU Affero General Public License v3.0",
-  "homepage": "https://mempool.space",
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/mempool/mempool"
-  },
-  "bugs": {
-    "url": "https://github.com/mempool/mempool/issues"
-  },
-  "keywords": [
-    "bitcoin",
-    "mempool",
-    "blockchain",
-    "explorer",
-    "liquid"
-  ],
+  "version": "1.0.0",
+  "description": "Bitcoin Mempool Visualizer",
   "main": "index.ts",
   "scripts": {
-    "ng": "./node_modules/@angular/cli/bin/ng",
-    "tsc": "./node_modules/typescript/bin/tsc",
-    "build": "npm run tsc",
-    "start": "node --max-old-space-size=2048 dist/index.js",
-    "start-production": "node --max-old-space-size=4096 dist/index.js",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "build": "tsc",
+    "start": "npm run build && node dist/index.js"
   },
+  "author": {
+    "name": "Simon Lindh",
+    "url": "https://github.com/mempool-space/mempool.space"
+  },
+  "license": "MIT",
   "dependencies": {
-    "@mempool/bitcoin": "^3.0.3",
-    "@mempool/electrum-client": "^1.1.7",
-    "@types/ws": "8.2.2",
-    "axios": "0.24.0",
-    "bitcoinjs-lib": "6.0.1",
-    "crypto-js": "^4.0.0",
-    "express": "^4.17.1",
-    "locutus": "^2.0.12",
-    "mysql2": "2.3.3",
-    "node-worker-threads-pool": "^1.4.3",
-    "typescript": "4.4.4",
-    "ws": "8.3.0"
+    "bitcoin": "^3.0.1",
+    "compression": "^1.7.3",
+    "express": "^4.16.3",
+    "mysql2": "^1.6.1",
+    "request": "^2.88.0",
+    "ws": "^6.0.0"
   },
   "devDependencies": {
-    "@types/compression": "^1.0.1",
-    "@types/express": "^4.17.2",
-    "@types/locutus": "^0.0.6",
-    "tslint": "^6.1.0"
+    "@types/express": "^4.16.0",
+    "@types/mysql2": "github:types/mysql2",
+    "@types/request": "^2.48.2",
+    "@types/ws": "^6.0.1",
+    "tslint": "^5.11.0",
+    "typescript": "^3.1.1"
   }
 }

backend/src/api/backend-info.ts

@@ -1,47 +0,0 @@
-import * as fs from 'fs';
-import * as os from 'os';
-import logger from '../logger';
-import { IBackendInfo } from '../mempool.interfaces';
-
-class BackendInfo {
-  private gitCommitHash = '';
-  private hostname = '';
-  private version = '';
-
-  constructor() {
-    this.setLatestCommitHash();
-    this.setVersion();
-    this.hostname = os.hostname();
-  }
-
-  public getBackendInfo(): IBackendInfo {
-    return {
-      hostname: this.hostname,
-      gitCommit: this.gitCommitHash,
-      version: this.version,
-    };
-  }
-
-  public getShortCommitHash() {
-    return this.gitCommitHash.slice(0, 7);
-  }
-
-  private setLatestCommitHash(): void {
-    try {
-      this.gitCommitHash = fs.readFileSync('../.git/refs/heads/master').toString().trim();
-    } catch (e) {
-      logger.err('Could not load git commit info: ' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private setVersion(): void {
-    try {
-      const packageJson = fs.readFileSync('package.json').toString();
-      this.version = JSON.parse(packageJson).version;
-    } catch (e) {
-      throw new Error(e instanceof Error ? e.message : 'Error');
-    }
-  }
-}
-
-export default new BackendInfo();

backend/src/api/bisq/bisq.ts

@@ -1,277 +0,0 @@
-import config from '../../config';
-import * as fs from 'fs';
-import axios from 'axios';
-import { BisqBlocks, BisqBlock, BisqTransaction, BisqStats, BisqTrade } from './interfaces';
-import { Common } from '../common';
-import { BlockExtended } from '../../mempool.interfaces';
-import { StaticPool } from 'node-worker-threads-pool';
-import logger from '../../logger';
-
-class Bisq {
-  private static BLOCKS_JSON_FILE_PATH = config.BISQ.DATA_PATH + '/json/all/blocks.json';
-  private latestBlockHeight = 0;
-  private blocks: BisqBlock[] = [];
-  private allBlocks: BisqBlock[] = [];
-  private transactions: BisqTransaction[] = [];
-  private transactionIndex: { [txId: string]: BisqTransaction } = {};
-  private blockIndex: { [hash: string]: BisqBlock } = {};
-  private addressIndex: { [address: string]: BisqTransaction[] } = {};
-  private stats: BisqStats = {
-    minted: 0,
-    burnt: 0,
-    addresses: 0,
-    unspent_txos: 0,
-    spent_txos: 0,
-  };
-  private price: number = 0;
-  private priceUpdateCallbackFunction: ((price: number) => void) | undefined;
-  private topDirectoryWatcher: fs.FSWatcher | undefined;
-  private subdirectoryWatcher: fs.FSWatcher | undefined;
-  private jsonParsePool = new StaticPool({
-    size: 4,
-    task: (blob: string) => JSON.parse(blob),
-  });
-
-  constructor() {}
-
-  startBisqService(): void {
-    this.checkForBisqDataFolder();
-    this.loadBisqDumpFile();
-    setInterval(this.updatePrice.bind(this), 1000 * 60 * 60);
-    this.updatePrice();
-    this.startTopDirectoryWatcher();
-    this.startSubDirectoryWatcher();
-  }
-
-  handleNewBitcoinBlock(block: BlockExtended): void {
-    if (block.height - 10 > this.latestBlockHeight && this.latestBlockHeight !== 0) {
-      logger.warn(`Bitcoin block height (#${block.height}) has diverged from the latest Bisq block height (#${this.latestBlockHeight}). Restarting watchers...`);
-      this.startTopDirectoryWatcher();
-      this.startSubDirectoryWatcher();
-    }
-  }
-
-  getTransaction(txId: string): BisqTransaction | undefined {
-    return this.transactionIndex[txId];
-  }
-
-  getTransactions(start: number, length: number, types: string[]): [BisqTransaction[], number] {
-    let transactions = this.transactions;
-    if (types.length) {
-      transactions = transactions.filter((tx) => types.indexOf(tx.txType) > -1);
-    }
-    return [transactions.slice(start, length + start), transactions.length];
-  }
-
-  getBlock(hash: string): BisqBlock | undefined {
-    return this.blockIndex[hash];
-  }
-
-  getAddress(hash: string): BisqTransaction[] {
-    return this.addressIndex[hash];
-  }
-
-  getBlocks(start: number, length: number): [BisqBlock[], number] {
-    return [this.blocks.slice(start, length + start), this.blocks.length];
-  }
-
-  getStats(): BisqStats {
-    return this.stats;
-  }
-
-  setPriceCallbackFunction(fn: (price: number) => void) {
-    this.priceUpdateCallbackFunction = fn;
-  }
-
-  getLatestBlockHeight(): number {
-    return this.latestBlockHeight;
-  }
-
-  private checkForBisqDataFolder() {
-    if (!fs.existsSync(Bisq.BLOCKS_JSON_FILE_PATH)) {
-      logger.warn(Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist. Make sure Bisq is running and the config is correct before starting the server.`);
-      return process.exit(1);
-    }
-  }
-
-  private startTopDirectoryWatcher() {
-    if (this.topDirectoryWatcher) {
-      this.topDirectoryWatcher.close();
-    }
-    let fsWait: NodeJS.Timeout | null = null;
-    this.topDirectoryWatcher = fs.watch(config.BISQ.DATA_PATH + '/json', () => {
-      if (fsWait) {
-        clearTimeout(fsWait);
-      }
-      if (this.subdirectoryWatcher) {
-        this.subdirectoryWatcher.close();
-      }
-      fsWait = setTimeout(() => {
-        logger.debug(`Bisq restart detected. Resetting both watchers in 3 minutes.`);
-        setTimeout(() => {
-          this.startTopDirectoryWatcher();
-          this.startSubDirectoryWatcher();
-          this.loadBisqDumpFile();
-        }, 180000);
-      }, 15000);
-    });
-  }
-
-  private startSubDirectoryWatcher() {
-    if (this.subdirectoryWatcher) {
-      this.subdirectoryWatcher.close();
-    }
-    if (!fs.existsSync(Bisq.BLOCKS_JSON_FILE_PATH)) {
-      logger.warn(Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist. Trying to restart sub directory watcher again in 3 minutes.`);
-      setTimeout(() => this.startSubDirectoryWatcher(), 180000);
-      return;
-    }
-    let fsWait: NodeJS.Timeout | null = null;
-    this.subdirectoryWatcher = fs.watch(config.BISQ.DATA_PATH + '/json/all', () => {
-      if (fsWait) {
-        clearTimeout(fsWait);
-      }
-      fsWait = setTimeout(() => {
-        logger.debug(`Change detected in the Bisq data folder.`);
-        this.loadBisqDumpFile();
-      }, 2000);
-    });
-  }
-
-  private updatePrice() {
-    axios.get<BisqTrade[]>('https://bisq.markets/api/trades/?market=bsq_btc', { timeout: 10000 })
-      .then((response) => {
-        const prices: number[] = [];
-        response.data.forEach((trade) => {
-          prices.push(parseFloat(trade.price) * 100000000);
-        });
-        prices.sort((a, b) => a - b);
-        this.price = Common.median(prices);
-        if (this.priceUpdateCallbackFunction) {
-          this.priceUpdateCallbackFunction(this.price);
-        }
-    }).catch((err) => {
-      logger.err('Error updating Bisq market price: ' + err);
-    });
-  }
-
-  private async loadBisqDumpFile(): Promise<void> {
-    try {
-      const data = await this.loadData();
-      await this.loadBisqBlocksDump(data);
-      this.buildIndex();
-      this.calculateStats();
-    } catch (e) {
-      logger.info('loadBisqDumpFile() error.' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private buildIndex() {
-    const start = new Date().getTime();
-    this.transactions = [];
-    this.transactionIndex = {};
-    this.addressIndex = {};
-
-    this.allBlocks.forEach((block) => {
-      /* Build block index */
-      if (!this.blockIndex[block.hash]) {
-        this.blockIndex[block.hash] = block;
-      }
-
-      /* Build transactions index */
-      block.txs.forEach((tx) => {
-        this.transactions.push(tx);
-        this.transactionIndex[tx.id] = tx;
-      });
-    });
-
-    /* Build address index */
-    this.transactions.forEach((tx) => {
-      tx.inputs.forEach((input) => {
-        if (!this.addressIndex[input.address]) {
-          this.addressIndex[input.address] = [];
-        }
-        if (this.addressIndex[input.address].indexOf(tx) === -1) {
-          this.addressIndex[input.address].push(tx);
-        }
-      });
-      tx.outputs.forEach((output) => {
-        if (!this.addressIndex[output.address]) {
-          this.addressIndex[output.address] = [];
-        }
-        if (this.addressIndex[output.address].indexOf(tx) === -1) {
-          this.addressIndex[output.address].push(tx);
-        }
-      });
-    });
-
-    const time = new Date().getTime() - start;
-    logger.debug('Bisq data index rebuilt in ' + time + ' ms');
-  }
-
-  private calculateStats() {
-    let minted = 0;
-    let burned = 0;
-    let unspent = 0;
-    let spent = 0;
-
-    this.transactions.forEach((tx) => {
-      tx.outputs.forEach((output) => {
-        if (output.opReturn) {
-          return;
-        }
-        if (output.txOutputType === 'GENESIS_OUTPUT' || output.txOutputType === 'ISSUANCE_CANDIDATE_OUTPUT' && output.isVerified) {
-          minted += output.bsqAmount;
-        }
-        if (output.isUnspent) {
-          unspent++;
-        } else {
-          spent++;
-        }
-      });
-      burned += tx['burntFee'];
-    });
-
-    this.stats = {
-      addresses: Object.keys(this.addressIndex).length,
-      minted: minted / 100,
-      burnt: burned / 100,
-      spent_txos: spent,
-      unspent_txos: unspent,
-    };
-  }
-
-  private async loadBisqBlocksDump(cacheData: string): Promise<void> {
-    const start = new Date().getTime();
-    if (cacheData && cacheData.length !== 0) {
-      logger.debug('Processing Bisq data dump...');
-      const data: BisqBlocks = await this.jsonParsePool.exec(cacheData);
-      if (data.blocks && data.blocks.length !== this.allBlocks.length) {
-        this.allBlocks = data.blocks;
-        this.allBlocks.reverse();
-        this.blocks = this.allBlocks.filter((block) => block.txs.length > 0);
-        this.latestBlockHeight = data.chainHeight;
-        const time = new Date().getTime() - start;
-        logger.debug('Bisq dump processed in ' + time + ' ms (worker thread)');
-      } else {
-        throw new Error(`Bisq dump didn't contain any blocks`);
-      }
-    }
-  }
-
-  private loadData(): Promise<string> {
-    return new Promise((resolve, reject) => {
-      if (!fs.existsSync(Bisq.BLOCKS_JSON_FILE_PATH)) {
-        return reject(Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist`);
-      }
-      fs.readFile(Bisq.BLOCKS_JSON_FILE_PATH, 'utf8', (err, data) => {
-        if (err) {
-          reject(err);
-        }
-        resolve(data);
-      });
-    });
-  }
-}
-
-export default new Bisq();

backend/src/api/bisq/interfaces.ts

@@ -1,258 +0,0 @@
-
-export interface BisqBlocks {
-  chainHeight: number;
-  blocks: BisqBlock[];
-}
-
-export interface BisqBlock {
-  height: number;
-  time: number;
-  hash: string;
-  previousBlockHash: string;
-  txs: BisqTransaction[];
-}
-
-export interface BisqTransaction {
-  txVersion: string;
-  id: string;
-  blockHeight: number;
-  blockHash: string;
-  time: number;
-  inputs: BisqInput[];
-  outputs: BisqOutput[];
-  txType: string;
-  txTypeDisplayString: string;
-  burntFee: number;
-  invalidatedBsq: number;
-  unlockBlockHeight: number;
-}
-
-export interface BisqStats {
-  minted: number;
-  burnt: number;
-  addresses: number;
-  unspent_txos: number;
-  spent_txos: number;
-}
-
-interface BisqInput {
-  spendingTxOutputIndex: number;
-  spendingTxId: string;
-  bsqAmount: number;
-  isVerified: boolean;
-  address: string;
-  time: number;
-}
-
-interface BisqOutput {
-  txVersion: string;
-  txId: string;
-  index: number;
-  bsqAmount: number;
-  btcAmount: number;
-  height: number;
-  isVerified: boolean;
-  burntFee: number;
-  invalidatedBsq: number;
-  address: string;
-  scriptPubKey: BisqScriptPubKey;
-  time: any;
-  txType: string;
-  txTypeDisplayString: string;
-  txOutputType: string;
-  txOutputTypeDisplayString: string;
-  lockTime: number;
-  isUnspent: boolean;
-  spentInfo: SpentInfo;
-  opReturn?: string;
-}
-
-interface BisqScriptPubKey {
-  addresses: string[];
-  asm: string;
-  hex: string;
-  reqSigs?: number;
-  type: string;
-}
-
-interface SpentInfo {
-  height: number;
-  inputIndex: number;
-  txId: string;
-}
-
-export interface BisqTrade {
-  direction: string;
-  price: string;
-  amount: string;
-  volume: string;
-  payment_method: string;
-  trade_id: string;
-  trade_date: number;
-  market?: string;
-}
-
-export interface Currencies { [txid: string]: Currency; }
-
-export interface Currency {
-  code: string;
-  name: string;
-  precision: number;
-
-  _type: string;
-}
-
-export interface Depth { [market: string]: Market; }
-
-interface Market {
-  'buys': string[];
-  'sells': string[];
-}
-
-export interface HighLowOpenClose {
-  period_start: number | string;
-  open: string;
-  high: string;
-  low: string;
-  close: string;
-  volume_left: string;
-  volume_right: string;
-  avg: string;
-}
-
-export interface Markets { [txid: string]: Pair; }
-
-interface Pair {
-  pair: string;
-  lname: string;
-  rname: string;
-  lsymbol: string;
-  rsymbol: string;
-  lprecision: number;
-  rprecision: number;
-  ltype: string;
-  rtype: string;
-  name: string;
-}
-
-export interface Offers { [market: string]: OffersMarket; }
-
-interface OffersMarket {
-  buys: Offer[] | null;
-  sells: Offer[] | null;
-}
-
-export interface OffersData {
-  direction: string;
-  currencyCode: string;
-  minAmount: number;
-  amount: number;
-  price: number;
-  date: number;
-  useMarketBasedPrice: boolean;
-  marketPriceMargin: number;
-  paymentMethod: string;
-  id: string;
-  currencyPair: string;
-  primaryMarketDirection: string;
-  priceDisplayString: string;
-  primaryMarketAmountDisplayString: string;
-  primaryMarketMinAmountDisplayString: string;
-  primaryMarketVolumeDisplayString: string;
-  primaryMarketMinVolumeDisplayString: string;
-  primaryMarketPrice: number;
-  primaryMarketAmount: number;
-  primaryMarketMinAmount: number;
-  primaryMarketVolume: number;
-  primaryMarketMinVolume: number;
-}
-
-export interface Offer {
-  offer_id: string;
-  offer_date: number;
-  direction: string;
-  min_amount: string;
-  amount: string;
-  price: string;
-  volume: string;
-  payment_method: string;
-  offer_fee_txid: any;
-}
-
-export interface Tickers { [market: string]: Ticker | null; }
-
-export interface Ticker {
-  last: string;
-  high: string;
-  low: string;
-  volume_left: string;
-  volume_right: string;
-  buy: string | null;
-  sell: string | null;
-}
-
-export interface Trade {
-  direction: string;
-  price: string;
-  amount: string;
-  volume: string;
-  payment_method: string;
-  trade_id: string;
-  trade_date: number;
-}
-
-export interface TradesData {
-  currency: string;
-  direction: string;
-  tradePrice: number;
-  tradeAmount: number;
-  tradeDate: number;
-  paymentMethod: string;
-  offerDate: number;
-  useMarketBasedPrice: boolean;
-  marketPriceMargin: number;
-  offerAmount: number;
-  offerMinAmount: number;
-  offerId: string;
-  depositTxId?: string;
-  currencyPair: string;
-  primaryMarketDirection: string;
-  primaryMarketTradePrice: number;
-  primaryMarketTradeAmount: number;
-  primaryMarketTradeVolume: number;
-
-  _market: string;
-  _tradePriceStr: string;
-  _tradeAmountStr: string;
-  _tradeVolumeStr: string;
-  _offerAmountStr: string;
-  _tradePrice: number;
-  _tradeAmount: number;
-  _tradeVolume: number;
-  _offerAmount: number;
-}
-
-export interface MarketVolume {
-  period_start: number;
-  num_trades: number;
-  volume: string;
-}
-
-export interface MarketsApiError {
-  success: number;
-  error: string;
-}
-
-export type Interval = 'minute' | 'half_hour' | 'hour' | 'half_day' | 'day' | 'week' | 'month' | 'year' | 'auto';
-
-export interface SummarizedIntervals { [market: string]: SummarizedInterval; }
-export interface SummarizedInterval {
-  'period_start': number;
-  'open': number;
-  'close': number;
-  'high': number;
-  'low': number;
-  'avg': number;
-  'volume_right': number;
-  'volume_left': number;
-}

backend/src/api/bisq/markets-api.ts

@@ -1,679 +0,0 @@
-import { Currencies, OffersData, TradesData, Depth, Currency, Interval, HighLowOpenClose,
-  Markets, Offers, Offer, BisqTrade, MarketVolume, Tickers, Ticker, SummarizedIntervals, SummarizedInterval } from './interfaces';
-
-import * as datetime from 'locutus/php/datetime';
-
-class BisqMarketsApi {
-  private cryptoCurrencyData: Currency[] = [];
-  private fiatCurrencyData: Currency[] = [];
-  private activeCryptoCurrencyData: Currency[] = [];
-  private activeFiatCurrencyData: Currency[] = [];
-  private offersData: OffersData[] = [];
-  private tradesData: TradesData[] = [];
-  private fiatCurrenciesIndexed: { [code: string]: true } = {};
-  private allCurrenciesIndexed: { [code: string]: Currency } = {};
-  private tradeDataByMarket: { [market: string]: TradesData[] } = {};
-  private tickersCache: Ticker | Tickers | null = null;
-
-  constructor() { }
-
-  setOffersData(offers: OffersData[]) {
-    this.offersData = offers;
-  }
-
-  setTradesData(trades: TradesData[]) {
-    this.tradesData = trades;
-    this.tradeDataByMarket = {};
-
-    this.tradesData.forEach((trade) => {
-      trade._market = trade.currencyPair.toLowerCase().replace('/', '_');
-      if (!this.tradeDataByMarket[trade._market]) {
-        this.tradeDataByMarket[trade._market] = [];
-      }
-      this.tradeDataByMarket[trade._market].push(trade);
-    });
-  }
-
-  setCurrencyData(cryptoCurrency: Currency[], fiatCurrency: Currency[], activeCryptoCurrency: Currency[], activeFiatCurrency: Currency[]) {
-    this.cryptoCurrencyData = cryptoCurrency,
-    this.fiatCurrencyData = fiatCurrency,
-    this.activeCryptoCurrencyData = activeCryptoCurrency,
-    this.activeFiatCurrencyData = activeFiatCurrency;
-
-    this.fiatCurrenciesIndexed = {};
-    this.allCurrenciesIndexed = {};
-
-    this.fiatCurrencyData.forEach((currency) => {
-      currency._type = 'fiat';
-      this.fiatCurrenciesIndexed[currency.code] = true;
-      this.allCurrenciesIndexed[currency.code] = currency;
-    });
-    this.cryptoCurrencyData.forEach((currency) => {
-       currency._type = 'crypto';
-       this.allCurrenciesIndexed[currency.code] = currency;
-    });
-  }
-
-  updateCache() {
-    this.tickersCache = null;
-    this.tickersCache = this.getTicker();
-  }
-
-  getCurrencies(
-    type: 'crypto' | 'fiat' | 'active' | 'all' = 'all',
-  ): Currencies {
-    let currencies: Currency[];
-
-    switch (type) {
-      case 'fiat':
-        currencies = this.fiatCurrencyData;
-        break;
-      case 'crypto':
-        currencies = this.cryptoCurrencyData;
-        break;
-      case 'active':
-        currencies = this.activeCryptoCurrencyData.concat(this.activeFiatCurrencyData);
-        break;
-      case 'all':
-      default:
-        currencies = this.cryptoCurrencyData.concat(this.fiatCurrencyData);
-    }
-    const result = {};
-    currencies.forEach((currency) => {
-      result[currency.code] = currency;
-    });
-    return result;
-  }
-
-  getDepth(
-    market: string,
-  ): Depth {
-    const currencyPair = market.replace('_', '/').toUpperCase();
-
-    const buys = this.offersData
-      .filter((offer) => offer.currencyPair === currencyPair && offer.primaryMarketDirection === 'BUY')
-      .map((offer) => offer.price)
-      .sort((a, b) => b - a)
-      .map((price) => this.intToBtc(price));
-
-    const sells = this.offersData
-      .filter((offer) => offer.currencyPair === currencyPair && offer.primaryMarketDirection === 'SELL')
-      .map((offer) => offer.price)
-      .sort((a, b) => a - b)
-      .map((price) => this.intToBtc(price));
-
-    const result = {};
-    result[market] = {
-      'buys': buys,
-      'sells': sells,
-    };
-    return result;
-  }
-
-  getOffers(
-    market: string,
-    direction?: 'buy' | 'sell',
-  ): Offers {
-    const currencyPair = market.replace('_', '/').toUpperCase();
-
-    let buys: Offer[] | null = null;
-    let sells: Offer[] | null = null;
-
-    if (!direction || direction === 'buy') {
-      buys = this.offersData
-        .filter((offer) => offer.currencyPair === currencyPair && offer.primaryMarketDirection === 'BUY')
-        .sort((a, b) => b.price - a.price)
-        .map((offer) => this.offerDataToOffer(offer, market));
-    }
-
-    if (!direction || direction === 'sell') {
-      sells = this.offersData
-        .filter((offer) => offer.currencyPair === currencyPair && offer.primaryMarketDirection === 'SELL')
-        .sort((a, b) => a.price - b.price)
-        .map((offer) => this.offerDataToOffer(offer, market));
-    }
-
-    const result: Offers = {};
-    result[market] = {
-      'buys': buys,
-      'sells': sells,
-    };
-    return result;
-  }
-
-  getMarkets(): Markets {
-    const allCurrencies = this.getCurrencies();
-    const activeCurrencies = this.getCurrencies('active');
-    const markets = {};
-
-    for (const currency of Object.keys(activeCurrencies)) {
-      if (allCurrencies[currency].code === 'BTC') {
-        continue;
-      }
-
-      const isFiat = allCurrencies[currency]._type === 'fiat';
-      const pmarketname = allCurrencies['BTC']['name'];
-
-      const lsymbol = isFiat ? 'BTC' : currency;
-      const rsymbol = isFiat ? currency : 'BTC';
-      const lname = isFiat ? pmarketname : allCurrencies[currency].name;
-      const rname = isFiat ? allCurrencies[currency].name : pmarketname;
-      const ltype = isFiat ? 'crypto' : allCurrencies[currency]._type;
-      const rtype = isFiat ? 'fiat' : 'crypto';
-      const lprecision = 8;
-      const rprecision = isFiat ? 2 : 8;
-      const pair = lsymbol.toLowerCase() + '_' + rsymbol.toLowerCase();
-
-      markets[pair] = {
-        'pair': pair,
-        'lname': lname,
-        'rname': rname,
-        'lsymbol': lsymbol,
-        'rsymbol': rsymbol,
-        'lprecision': lprecision,
-        'rprecision': rprecision,
-        'ltype': ltype,
-        'rtype': rtype,
-        'name': lname + '/' + rname,
-      };
-    }
-
-    return markets;
-  }
-
-  getTrades(
-    market: string,
-    timestamp_from?: number,
-    timestamp_to?: number,
-    trade_id_from?: string,
-    trade_id_to?: string,
-    direction?: 'buy' | 'sell',
-    limit: number = 100,
-    sort: 'asc' | 'desc' = 'desc',
-  ): BisqTrade[] {
-      limit = Math.min(limit, 2000);
-      const _market = market === 'all' ? undefined : market;
-
-      if (!timestamp_from) {
-        timestamp_from = new Date('2016-01-01').getTime() / 1000;
-      }
-      if (!timestamp_to) {
-        timestamp_to = new Date().getTime() / 1000;
-      }
-
-      const matches = this.getTradesByCriteria(_market, timestamp_to, timestamp_from,
-        trade_id_to, trade_id_from, direction, sort, limit, false);
-
-      if (sort === 'asc') {
-        matches.sort((a, b) => a.tradeDate - b.tradeDate);
-      } else {
-        matches.sort((a, b) => b.tradeDate - a.tradeDate);
-      }
-
-      return matches.map((trade) => {
-        const bsqTrade: BisqTrade = {
-          direction: trade.primaryMarketDirection,
-          price: trade._tradePriceStr,
-          amount: trade._tradeAmountStr,
-          volume: trade._tradeVolumeStr,
-          payment_method: trade.paymentMethod,
-          trade_id: trade.offerId,
-          trade_date: trade.tradeDate,
-        };
-        if (market === 'all') {
-          bsqTrade.market = trade._market;
-        }
-        return bsqTrade;
-      });
-  }
-
-  getVolumes(
-    market?: string,
-    timestamp_from?: number,
-    timestamp_to?: number,
-    interval: Interval = 'auto',
-    milliseconds?: boolean,
-    timestamp: 'no' | 'yes' = 'yes',
-  ): MarketVolume[] {
-    if (milliseconds) {
-      timestamp_from = timestamp_from ? timestamp_from / 1000 : timestamp_from;
-      timestamp_to = timestamp_to ? timestamp_to / 1000 : timestamp_to;
-    }
-    if (!timestamp_from) {
-      timestamp_from = new Date('2016-01-01').getTime() / 1000;
-    }
-    if (!timestamp_to) {
-      timestamp_to = new Date().getTime() / 1000;
-    }
-
-    const trades = this.getTradesByCriteria(market, timestamp_to, timestamp_from,
-      undefined, undefined, undefined, 'asc', Number.MAX_SAFE_INTEGER);
-
-    if (interval === 'auto') {
-      const range = timestamp_to - timestamp_from;
-      interval = this.getIntervalFromRange(range);
-    }
-
-    const intervals: any = {};
-    const marketVolumes: MarketVolume[] = [];
-
-    for (const trade of trades) {
-      const traded_at = trade['tradeDate'] / 1000;
-      const interval_start = this.intervalStart(traded_at, interval);
-
-      if (!intervals[interval_start]) {
-        intervals[interval_start] = {
-          'volume': 0,
-          'num_trades': 0,
-        };
-      }
-
-      const period = intervals[interval_start];
-      period['period_start'] = interval_start;
-      period['volume'] += this.fiatCurrenciesIndexed[trade.currency] ? trade._tradeAmount : trade._tradeVolume;
-      period['num_trades']++;
-    }
-
-    for (const p in intervals) {
-      if (intervals.hasOwnProperty(p)) {
-        const period = intervals[p];
-        marketVolumes.push({
-          period_start: timestamp === 'no' ? new Date(period['period_start'] * 1000).toISOString() : period['period_start'],
-          num_trades: period['num_trades'],
-          volume: this.intToBtc(period['volume']),
-        });
-      }
-    }
-
-    return marketVolumes;
-  }
-
-  getTicker(
-    market?: string,
-  ): Tickers | Ticker | null {
-    if (market) {
-      return this.getTickerFromMarket(market);
-    }
-
-    if (this.tickersCache) {
-      return this.tickersCache;
-    }
-
-    const allMarkets = this.getMarkets();
-    const tickers = {};
-    for (const m in allMarkets) {
-      if (allMarkets.hasOwnProperty(m)) {
-        tickers[allMarkets[m].pair] = this.getTickerFromMarket(allMarkets[m].pair);
-      }
-    }
-
-    return tickers;
-  }
-
-  getTickerFromMarket(market: string): Ticker | null {
-    let ticker: Ticker;
-    const timestamp_from = datetime.strtotime('-24 hour');
-    const timestamp_to = new Date().getTime() / 1000;
-    const trades = this.getTradesByCriteria(market, timestamp_to, timestamp_from,
-      undefined, undefined, undefined, 'asc', Number.MAX_SAFE_INTEGER);
-
-    const periods: SummarizedInterval[] = Object.values(this.getTradesSummarized(trades, timestamp_from));
-
-    const allCurrencies = this.getCurrencies();
-    const currencyRight = allCurrencies[market.split('_')[1].toUpperCase()];
-
-    if (periods[0]) {
-      ticker = {
-        'last': this.intToBtc(periods[0].close),
-        'high': this.intToBtc(periods[0].high),
-        'low': this.intToBtc(periods[0].low),
-        'volume_left': this.intToBtc(periods[0].volume_left),
-        'volume_right': this.intToBtc(periods[0].volume_right),
-        'buy': null,
-        'sell': null,
-      };
-    } else {
-      const lastTrade = this.tradeDataByMarket[market];
-      if (!lastTrade) {
-        return null;
-      }
-      const tradePrice = lastTrade[0].primaryMarketTradePrice * Math.pow(10, 8 - currencyRight.precision);
-
-      const lastTradePrice = this.intToBtc(tradePrice);
-      ticker = {
-        'last': lastTradePrice,
-        'high': lastTradePrice,
-        'low': lastTradePrice,
-        'volume_left': '0',
-        'volume_right': '0',
-        'buy': null,
-        'sell': null,
-      };
-    }
-
-    const timestampFromMilli = timestamp_from * 1000;
-    const timestampToMilli = timestamp_to * 1000;
-
-    const currencyPair = market.replace('_', '/').toUpperCase();
-    const offersData = this.offersData.slice().sort((a, b) => a.price - b.price);
-
-    const buy = offersData.find((offer) => offer.currencyPair === currencyPair
-                                          && offer.primaryMarketDirection === 'BUY'
-                                          && offer.date >= timestampFromMilli
-                                          && offer.date <= timestampToMilli
-                                        );
-    const sell = offersData.find((offer) => offer.currencyPair === currencyPair
-                                            && offer.primaryMarketDirection === 'SELL'
-                                            && offer.date >= timestampFromMilli
-                                            && offer.date <= timestampToMilli
-                                          );
-
-    if (buy) {
-      ticker.buy = this.intToBtc(buy.primaryMarketPrice * Math.pow(10, 8 - currencyRight.precision));
-    }
-    if (sell) {
-      ticker.sell = this.intToBtc(sell.primaryMarketPrice * Math.pow(10, 8 - currencyRight.precision));
-    }
-
-    return ticker;
-  }
-
-  getHloc(
-    market: string,
-    interval: Interval = 'auto',
-    timestamp_from?: number,
-    timestamp_to?: number,
-    milliseconds?: boolean,
-    timestamp: 'no' | 'yes' = 'yes',
-  ): HighLowOpenClose[] {
-    if (milliseconds) {
-      timestamp_from = timestamp_from ? timestamp_from / 1000 : timestamp_from;
-      timestamp_to = timestamp_to ? timestamp_to / 1000 : timestamp_to;
-    }
-    if (!timestamp_from) {
-      timestamp_from = new Date('2016-01-01').getTime() / 1000;
-    }
-    if (!timestamp_to) {
-      timestamp_to = new Date().getTime() / 1000;
-    }
-
-    const trades = this.getTradesByCriteria(market, timestamp_to, timestamp_from,
-      undefined, undefined, undefined, 'asc', Number.MAX_SAFE_INTEGER);
-
-    if (interval === 'auto') {
-      const range = timestamp_to - timestamp_from;
-      interval = this.getIntervalFromRange(range);
-    }
-
-    const intervals = this.getTradesSummarized(trades, timestamp_from, interval);
-
-    const hloc: HighLowOpenClose[] = [];
-
-    for (const p in intervals) {
-      if (intervals.hasOwnProperty(p)) {
-        const period = intervals[p];
-        hloc.push({
-          period_start: timestamp === 'no' ? new Date(period['period_start'] * 1000).toISOString() : period['period_start'],
-          open: this.intToBtc(period['open']),
-          close: this.intToBtc(period['close']),
-          high: this.intToBtc(period['high']),
-          low: this.intToBtc(period['low']),
-          avg: this.intToBtc(period['avg']),
-          volume_right: this.intToBtc(period['volume_right']),
-          volume_left: this.intToBtc(period['volume_left']),
-        });
-      }
-    }
-
-    return hloc;
-  }
-
-  private getIntervalFromRange(range: number): Interval {
-    // two days range loads minute data
-    if (range <= 3600) {
-      // up to one hour range loads minutely data
-      return 'minute';
-    } else if (range <= 1 * 24 * 3600) {
-      // up to one day range loads half-hourly data
-      return 'half_hour';
-    } else if (range <= 3 * 24 * 3600) {
-      // up to 3 day range loads hourly data
-      return 'hour';
-    } else if (range <= 7 * 24 * 3600) {
-      // up to 7 day range loads half-daily data
-      return 'half_day';
-    } else if (range <= 60 * 24 * 3600) {
-      // up to 2 month range loads daily data
-      return 'day';
-    } else if (range <= 12 * 31 * 24 * 3600) {
-      // up to one year range loads weekly data
-      return 'week';
-    } else if (range <= 12 * 31 * 24 * 3600) {
-      // up to 5 year range loads monthly data
-      return 'month';
-    } else {
-      // greater range loads yearly data
-      return 'year';
-    }
-  }
-
-  getVolumesByTime(time: number): MarketVolume[] {
-    const timestamp_from = new Date().getTime() / 1000 - time;
-    const timestamp_to = new Date().getTime() / 1000;
-
-    const trades = this.getTradesByCriteria(undefined, timestamp_to, timestamp_from,
-      undefined, undefined, undefined, 'asc', Number.MAX_SAFE_INTEGER);
-
-    const markets: any = {};
-
-    for (const trade of trades) {
-      if (!markets[trade._market]) {
-        markets[trade._market] = {
-          'volume': 0,
-          'num_trades': 0,
-        };
-      }
-
-      markets[trade._market]['volume'] += this.fiatCurrenciesIndexed[trade.currency] ? trade._tradeAmount : trade._tradeVolume;
-      markets[trade._market]['num_trades']++;
-    }
-
-    return markets;
-  }
-
-  private getTradesSummarized(trades: TradesData[], timestamp_from: number, interval?: string): SummarizedIntervals {
-    const intervals: any = {};
-    const intervals_prices: any = {};
-
-    for (const trade of trades) {
-      const traded_at = trade.tradeDate / 1000;
-      const interval_start = !interval ? timestamp_from : this.intervalStart(traded_at, interval);
-
-      if (!intervals[interval_start]) {
-          intervals[interval_start] = {
-            'open': 0,
-            'close': 0,
-            'high': 0,
-            'low': 0,
-            'avg': 0,
-            'volume_right': 0,
-            'volume_left': 0,
-        };
-        intervals_prices[interval_start] = [];
-      }
-      const period = intervals[interval_start];
-      const price = trade._tradePrice;
-
-      if (!intervals_prices[interval_start]['leftvol']) {
-        intervals_prices[interval_start]['leftvol'] = [];
-      }
-      if (!intervals_prices[interval_start]['rightvol']) {
-        intervals_prices[interval_start]['rightvol'] = [];
-      }
-
-      intervals_prices[interval_start]['leftvol'].push(trade._tradeAmount);
-      intervals_prices[interval_start]['rightvol'].push(trade._tradeVolume);
-
-      if (price) {
-          const plow = period['low'];
-          period['period_start'] = interval_start;
-          period['open'] = period['open'] || price;
-          period['close'] = price;
-          period['high'] = price > period['high'] ? price : period['high'];
-          period['low'] = (plow && price > plow) ? period['low'] : price;
-          period['avg'] = intervals_prices[interval_start]['rightvol'].reduce((p: number, c: number) => c + p, 0)
-            / intervals_prices[interval_start]['leftvol'].reduce((c: number, p: number) => c + p, 0) * 100000000;
-          period['volume_left'] += trade._tradeAmount;
-          period['volume_right'] += trade._tradeVolume;
-      }
-    }
-    return intervals;
-  }
-
-  private getTradesByCriteria(
-    market: string | undefined,
-    timestamp_to: number,
-    timestamp_from: number,
-    trade_id_to: string | undefined,
-    trade_id_from: string | undefined,
-    direction: 'buy' | 'sell' | undefined,
-    sort: string,
-    limit: number,
-    integerAmounts: boolean = true,
- ): TradesData[] {
-    let trade_id_from_ts: number | null = null;
-    let trade_id_to_ts: number | null = null;
-    const allCurrencies = this.getCurrencies();
-
-    const timestampFromMilli = timestamp_from * 1000;
-    const timestampToMilli = timestamp_to * 1000;
-
-    // note: the offer_id_from/to depends on iterating over trades in
-    // descending chronological order.
-    const tradesDataSorted = this.tradesData.slice();
-    if (sort === 'asc') {
-      tradesDataSorted.reverse();
-    }
-
-    let matches: TradesData[] = [];
-    for (const trade of tradesDataSorted) {
-      if (trade_id_from === trade.offerId) {
-        trade_id_from_ts = trade.tradeDate;
-      }
-      if (trade_id_to === trade.offerId) {
-        trade_id_to_ts = trade.tradeDate;
-      }
-      if (trade_id_to && trade_id_to_ts === null) {
-        continue;
-      }
-      if (trade_id_from && trade_id_from_ts != null && trade_id_from_ts !== trade.tradeDate) {
-        continue;
-      }
-      if (market && market !== trade._market) {
-        continue;
-      }
-      if (timestampFromMilli && timestampFromMilli > trade.tradeDate) {
-        continue;
-      }
-      if (timestampToMilli && timestampToMilli < trade.tradeDate) {
-        continue;
-      }
-      if (direction && direction !== trade.direction.toLowerCase()) {
-        continue;
-      }
-
-      // Filter out bogus trades with BTC/BTC or XXX/XXX market.
-      // See github issue: https://github.com/bitsquare/bitsquare/issues/883
-      const currencyPairs = trade.currencyPair.split('/');
-      if (currencyPairs[0] === currencyPairs[1]) {
-        continue;
-      }
-
-      const currencyLeft = allCurrencies[currencyPairs[0]];
-      const currencyRight = allCurrencies[currencyPairs[1]];
-
-      if (!currencyLeft || !currencyRight) {
-        continue;
-      }
-
-      const tradePrice = trade.primaryMarketTradePrice * Math.pow(10, 8 - currencyRight.precision);
-      const tradeAmount = trade.primaryMarketTradeAmount * Math.pow(10, 8 - currencyLeft.precision);
-      const tradeVolume = trade.primaryMarketTradeVolume * Math.pow(10, 8 - currencyRight.precision);
-
-      if (integerAmounts) {
-        trade._tradePrice = tradePrice;
-        trade._tradeAmount = tradeAmount;
-        trade._tradeVolume = tradeVolume;
-        trade._offerAmount = trade.offerAmount;
-      } else {
-        trade._tradePriceStr = this.intToBtc(tradePrice);
-        trade._tradeAmountStr = this.intToBtc(tradeAmount);
-        trade._tradeVolumeStr = this.intToBtc(tradeVolume);
-        trade._offerAmountStr = this.intToBtc(trade.offerAmount);
-      }
-
-      matches.push(trade);
-
-      if (matches.length >= limit) {
-        break;
-      }
-    }
-
-    if ((trade_id_from && !trade_id_from_ts) || (trade_id_to && !trade_id_to_ts)) {
-      matches = [];
-    }
-    return matches;
-  }
-
-  private intervalStart(ts: number, interval: string): number {
-    switch (interval) {
-        case 'minute':
-            return (ts - (ts % 60));
-        case '10_minute':
-            return (ts - (ts % 600));
-        case 'half_hour':
-            return (ts - (ts % 1800));
-        case 'hour':
-            return (ts - (ts % 3600));
-        case 'half_day':
-            return (ts - (ts % (3600 * 12)));
-        case 'day':
-            return datetime.strtotime('midnight today', ts);
-        case 'week':
-            return datetime.strtotime('midnight sunday last week', ts);
-        case 'month':
-            return datetime.strtotime('midnight first day of this month', ts);
-        case 'year':
-            return datetime.strtotime('midnight first day of january', ts);
-        default:
-            throw new Error('Unsupported interval: ' + interval);
-    }
-}
-
-  private offerDataToOffer(offer: OffersData, market: string): Offer {
-    const currencyPairs = market.split('_');
-    const currencyRight = this.allCurrenciesIndexed[currencyPairs[1].toUpperCase()];
-    const currencyLeft = this.allCurrenciesIndexed[currencyPairs[0].toUpperCase()];
-    const price = offer['primaryMarketPrice'] * Math.pow( 10, 8 - currencyRight['precision']);
-    const amount = offer['primaryMarketAmount'] * Math.pow( 10, 8 - currencyLeft['precision']);
-    const volume = offer['primaryMarketVolume'] * Math.pow( 10, 8 - currencyRight['precision']);
-
-    return {
-      offer_id: offer.id,
-      offer_date: offer.date,
-      direction: offer.primaryMarketDirection,
-      min_amount: this.intToBtc(offer.minAmount),
-      amount: this.intToBtc(amount),
-      price: this.intToBtc(price),
-      volume: this.intToBtc(volume),
-      payment_method: offer.paymentMethod,
-      offer_fee_txid: null,
-    };
-  }
-
-  private intToBtc(val: number): string {
-    return (val / 100000000).toFixed(8);
-  }
-}
-
-export default new BisqMarketsApi();

backend/src/api/bisq/markets.ts

@@ -1,131 +0,0 @@
-import config from '../../config';
-import * as fs from 'fs';
-import { OffersData as OffersData, TradesData, Currency } from './interfaces';
-import bisqMarket from './markets-api';
-import logger from '../../logger';
-
-class Bisq {
-  private static FOLDER_WATCH_CHANGE_DETECTION_DEBOUNCE = 4000;
-  private static MARKET_JSON_PATH = config.BISQ.DATA_PATH;
-  private static MARKET_JSON_FILE_PATHS = {
-    activeCryptoCurrency: '/active_crypto_currency_list.json',
-    activeFiatCurrency: '/active_fiat_currency_list.json',
-    cryptoCurrency: '/crypto_currency_list.json',
-    fiatCurrency: '/fiat_currency_list.json',
-    offers: '/offers_statistics.json',
-    trades: '/trade_statistics.json',
-  };
-
-  private cryptoCurrencyLastMtime = new Date('2016-01-01');
-  private fiatCurrencyLastMtime = new Date('2016-01-01');
-  private offersLastMtime = new Date('2016-01-01');
-  private tradesLastMtime = new Date('2016-01-01');
-
-  private subdirectoryWatcher: fs.FSWatcher | undefined;
-
-  constructor() {}
-
-  startBisqService(): void {
-    this.checkForBisqDataFolder();
-    this.loadBisqDumpFile();
-    this.startBisqDirectoryWatcher();
-  }
-
-  private checkForBisqDataFolder() {
-    if (!fs.existsSync(Bisq.MARKET_JSON_PATH + Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency)) {
-      logger.err(Bisq.MARKET_JSON_PATH + Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency + ` doesn't exist. Make sure Bisq is running and the config is correct before starting the server.`);
-      return process.exit(1);
-    }
-  }
-
-  private startBisqDirectoryWatcher() {
-    if (this.subdirectoryWatcher) {
-      this.subdirectoryWatcher.close();
-    }
-    if (!fs.existsSync(Bisq.MARKET_JSON_PATH + Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency)) {
-      logger.warn(Bisq.MARKET_JSON_PATH + Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency + ` doesn't exist. Trying to restart sub directory watcher again in 3 minutes.`);
-      setTimeout(() => this.startBisqDirectoryWatcher(), 180000);
-      return;
-    }
-    let fsWait: NodeJS.Timeout | null = null;
-    this.subdirectoryWatcher = fs.watch(Bisq.MARKET_JSON_PATH, () => {
-      if (fsWait) {
-        clearTimeout(fsWait);
-      }
-      fsWait = setTimeout(() => {
-        logger.debug(`Change detected in the Bisq market data folder.`);
-        this.loadBisqDumpFile();
-      }, Bisq.FOLDER_WATCH_CHANGE_DETECTION_DEBOUNCE);
-    });
-  }
-
-  private async loadBisqDumpFile(): Promise<void> {
-    const start = new Date().getTime();
-    try {
-      let marketsDataUpdated = false;
-      const cryptoMtime = this.getFileMtime(Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency);
-      const fiatMtime = this.getFileMtime(Bisq.MARKET_JSON_FILE_PATHS.fiatCurrency);
-      if (cryptoMtime > this.cryptoCurrencyLastMtime || fiatMtime > this.fiatCurrencyLastMtime) {
-        const cryptoCurrencyData = await this.loadData<Currency[]>(Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency);
-        const fiatCurrencyData = await this.loadData<Currency[]>(Bisq.MARKET_JSON_FILE_PATHS.fiatCurrency);
-        const activeCryptoCurrencyData = await this.loadData<Currency[]>(Bisq.MARKET_JSON_FILE_PATHS.activeCryptoCurrency);
-        const activeFiatCurrencyData = await this.loadData<Currency[]>(Bisq.MARKET_JSON_FILE_PATHS.activeFiatCurrency);
-        logger.debug('Updating Bisq Market Currency Data');
-        bisqMarket.setCurrencyData(cryptoCurrencyData, fiatCurrencyData, activeCryptoCurrencyData, activeFiatCurrencyData);
-        if (cryptoMtime > this.cryptoCurrencyLastMtime) {
-          this.cryptoCurrencyLastMtime = cryptoMtime;
-        }
-        if (fiatMtime > this.fiatCurrencyLastMtime) {
-          this.fiatCurrencyLastMtime = fiatMtime;
-        }
-        marketsDataUpdated = true;
-      }
-      const offersMtime = this.getFileMtime(Bisq.MARKET_JSON_FILE_PATHS.offers);
-      if (offersMtime > this.offersLastMtime) {
-        const offersData = await this.loadData<OffersData[]>(Bisq.MARKET_JSON_FILE_PATHS.offers);
-        logger.debug('Updating Bisq Market Offers Data');
-        bisqMarket.setOffersData(offersData);
-        this.offersLastMtime = offersMtime;
-        marketsDataUpdated = true;
-      }
-      const tradesMtime = this.getFileMtime(Bisq.MARKET_JSON_FILE_PATHS.trades);
-      if (tradesMtime > this.tradesLastMtime) {
-        const tradesData = await this.loadData<TradesData[]>(Bisq.MARKET_JSON_FILE_PATHS.trades);
-        logger.debug('Updating Bisq Market Trades Data');
-        bisqMarket.setTradesData(tradesData);
-        this.tradesLastMtime = tradesMtime;
-        marketsDataUpdated = true;
-      }
-      if (marketsDataUpdated) {
-        bisqMarket.updateCache();
-        const time = new Date().getTime() - start;
-        logger.debug('Bisq market data updated in ' + time + ' ms');
-      }
-    } catch (e) {
-      logger.err('loadBisqMarketDataDumpFile() error.' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private getFileMtime(path: string): Date {
-    const stats = fs.statSync(Bisq.MARKET_JSON_PATH + path);
-    return stats.mtime;
-  }
-
-  private loadData<T>(path: string): Promise<T> {
-    return new Promise((resolve, reject) => {
-      fs.readFile(Bisq.MARKET_JSON_PATH + path, 'utf8', (err, data) => {
-        if (err) {
-          reject(err);
-        }
-        try {
-          const parsedData = JSON.parse(data);
-          resolve(parsedData);
-        } catch (e) {
-          reject('JSON parse error (' + path + ')');
-        }
-      });
-    });
-  }
-}
-
-export default new Bisq();

backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts

@@ -1,22 +1,19 @@
-import { IEsploraApi } from './esplora-api.interface';
+import { IMempoolInfo, ITransaction, IBlock } from '../../interfaces';
 
 export interface AbstractBitcoinApi {
-  $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]>;
-  $getRawTransaction(txId: string, skipConversion?: boolean, addPrevout?: boolean): Promise<IEsploraApi.Transaction>;
-  $getBlockHeightTip(): Promise<number>;
-  $getTxIdsForBlock(hash: string): Promise<string[]>;
-  $getBlockHash(height: number): Promise<string>;
-  $getBlockHeader(hash: string): Promise<string>;
-  $getBlock(hash: string): Promise<IEsploraApi.Block>;
-  $getAddress(address: string): Promise<IEsploraApi.Address>;
-  $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]>;
-  $getAddressPrefix(prefix: string): string[];
-  $sendRawTransaction(rawTransaction: string): Promise<string>;
-}
-export interface BitcoinRpcCredentials {
-  host: string;
-  port: number;
-  user: string;
-  pass: string;
-  timeout: number;
+  getMempoolInfo(): Promise<IMempoolInfo>;
+  getRawMempool(): Promise<ITransaction['txid'][]>;
+  getRawTransaction(txId: string): Promise<ITransaction>;
+  getBlockCount(): Promise<number>;
+  getBlockAndTransactions(hash: string): Promise<IBlock>;
+  getBlockHash(height: number): Promise<string>;
+
+  getBlock(hash: string): Promise<IBlock>;
+  getBlockTransactions(hash: string): Promise<IBlock>;
+  getBlockTransactionsFromIndex(hash: string, index: number): Promise<IBlock>;
+  getBlocks(): Promise<string>;
+  getBlocksFromHeight(height: number): Promise<string>;
+  getAddress(address: string): Promise<IBlock>;
+  getAddressTransactions(address: string): Promise<IBlock>;
+  getAddressTransactionsFromLastSeenTxid(address: string, lastSeenTxid: string): Promise<IBlock>;
 }

backend/src/api/bitcoin/bitcoin-api-factory.ts

@@ -1,20 +1,16 @@
-import config from '../../config';
+const config = require('../../../mempool-config.json');
 import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
-import EsploraApi from './esplora-api';
-import BitcoinApi from './bitcoin-api';
-import ElectrumApi from './electrum-api';
-import bitcoinClient from './bitcoin-client';
+import BitcoindApi from './bitcoind-api';
+import ElectrsApi from './electrs-api';
 
-function bitcoinApiFactory(): AbstractBitcoinApi {
-  switch (config.MEMPOOL.BACKEND) {
-    case 'esplora':
-      return new EsploraApi();
-    case 'electrum':
-      return new ElectrumApi(bitcoinClient);
-    case 'none':
+function factory(): AbstractBitcoinApi {
+  switch (config.BACKEND_API) {
+    case 'electrs':
+      return new ElectrsApi();
+    case 'bitcoind':
     default:
-      return new BitcoinApi(bitcoinClient);
+      return new BitcoindApi();
   }
 }
 
-export default bitcoinApiFactory();
+export default factory();

backend/src/api/bitcoin/bitcoin-api.interface.ts

@@ -1,166 +0,0 @@
-export namespace IBitcoinApi {
-  export interface MempoolInfo {
-    loaded: boolean;                 //  (boolean) True if the mempool is fully loaded
-    size: number;                    //  (numeric) Current tx count
-    bytes: number;                   //  (numeric) Sum of all virtual transaction sizes as defined in BIP 141.
-    usage: number;                   //  (numeric) Total memory usage for the mempool
-    maxmempool: number;              //  (numeric) Maximum memory usage for the mempool
-    mempoolminfee: number;           //  (numeric) Minimum fee rate in BTC/kB for tx to be accepted.
-    minrelaytxfee: number;           //  (numeric) Current minimum relay fee for transactions
-  }
-
-  export interface RawMempool { [txId: string]: MempoolEntry; }
-
-  export interface MempoolEntry {
-    vsize: number;                   //  (numeric) virtual transaction size as defined in BIP 141.
-    weight: number;                  //  (numeric) transaction weight as defined in BIP 141.
-    time: number;                    //  (numeric) local time transaction entered pool in seconds since 1 Jan 1970 GMT
-    height: number;                  //  (numeric) block height when transaction entered pool
-    descendantcount: number;         //  (numeric) number of in-mempool descendant transactions (including this one)
-    descendantsize: number;          //  (numeric) virtual transaction size of in-mempool descendants (including this one)
-    ancestorcount: number;           //  (numeric) number of in-mempool ancestor transactions (including this one)
-    ancestorsize: number;            //  (numeric) virtual transaction size of in-mempool ancestors (including this one)
-    wtxid: string;                   //  (string) hash of serialized transactionumber; including witness data
-    fees: {
-      base: number;                  //  (numeric) transaction fee in BTC
-      modified: number;              //  (numeric) transaction fee with fee deltas used for mining priority in BTC
-      ancestor: number;              //  (numeric) modified fees (see above) of in-mempool ancestors (including this one) in BTC
-      descendant: number;            //  (numeric) modified fees (see above) of in-mempool descendants (including this one) in BTC
-    };
-    depends: string[];               //  (string) parent transaction id
-    spentby: string[];               //  (array) unconfirmed transactions spending outputs from this transaction
-    'bip125-replaceable': boolean;   //  (boolean) Whether this transaction could be replaced due to BIP125 (replace-by-fee)
-  }
-
-  export interface Block {
-    hash: string;                    //  (string) the block hash (same as provided)
-    confirmations: number;           //  (numeric) The number of confirmations, or -1 if the block is not on the main chain
-    size: number;                    //  (numeric) The block size
-    strippedsize: number;            //  (numeric) The block size excluding witness data
-    weight: number;                  //  (numeric) The block weight as defined in BIP 141
-    height: number;                  //  (numeric) The block height or index
-    version: number;                 //  (numeric) The block version
-    versionHex: string;              //  (string) The block version formatted in hexadecimal
-    merkleroot: string;              //  (string) The merkle root
-    tx: Transaction[];
-    time: number;                    //  (numeric) The block time expressed in UNIX epoch time
-    mediantime: number;              //  (numeric) The median block time expressed in UNIX epoch time
-    nonce: number;                   //  (numeric) The nonce
-    bits: string;                    //  (string) The bits
-    difficulty: number;              //  (numeric) The difficulty
-    chainwork: string;               //  (string) Expected number of hashes required to produce the chain up to this block (in hex)
-    nTx: number;                     //  (numeric) The number of transactions in the block
-    previousblockhash: string;       //  (string) The hash of the previous block
-    nextblockhash: string;           //  (string) The hash of the next block
-  }
-
-  export interface Transaction {
-    in_active_chain: boolean;        //  (boolean) Whether specified block is in the active chain or not
-    hex: string;                     //  (string) The serialized, hex-encoded data for 'txid'
-    txid: string;                    //  (string) The transaction id (same as provided)
-    hash: string;                    //  (string) The transaction hash (differs from txid for witness transactions)
-    size: number;                    //  (numeric) The serialized transaction size
-    vsize: number;                   //  (numeric) The virtual transaction size (differs from size for witness transactions)
-    weight: number;                  //  (numeric) The transaction's weight (between vsize*4-3 and vsize*4)
-    version: number;                 //  (numeric) The version
-    locktime: number;                //  (numeric) The lock time
-    vin: Vin[];
-    vout: Vout[];
-    blockhash: string;               //  (string) the block hash
-    confirmations: number;           //  (numeric) The confirmations
-    blocktime: number;               //  (numeric) The block time expressed in UNIX epoch time
-    time: number;                    //  (numeric) Same as blocktime
-  }
-
-  export interface Vin {
-    txid?: string;                   //  (string) The transaction id
-    vout?: number;                   //  (string)
-    scriptSig?: {                    //  (json object) The script
-      asm: string;                   //  (string) asm
-      hex: string;                   //  (string) hex
-    };
-    sequence: number;                //  (numeric) The script sequence number
-    txinwitness?: string[];          //  (string) hex-encoded witness data
-    coinbase?: string;
-    is_pegin?: boolean;              //  (boolean) Elements peg-in
-  }
-
-  export interface Vout {
-    value: number;                   //  (numeric) The value in BTC
-    n: number;                       //  (numeric) index
-    asset?: string;                  //  (string) Elements asset id
-    scriptPubKey: {                  //  (json object)
-      asm: string;                   //  (string) the asm
-      hex: string;                   //  (string) the hex
-      reqSigs?: number;              //  (numeric) The required sigs
-      type: string;                  //  (string) The type, eg 'pubkeyhash'
-      address?: string;              //  (string) bitcoin address
-      addresses?: string[];           //  (string) bitcoin addresses
-      pegout_chain?: string;         //  (string) Elements peg-out chain
-      pegout_addresses?: string[];   //  (string) Elements peg-out addresses
-    };
-  }
-
-  export interface AddressInformation {
-    isvalid: boolean;                //  (boolean) If the address is valid or not. If not, this is the only property returned.
-    isvalid_parent?: boolean;        //  (boolean) Elements only
-    address: string;                 //  (string) The bitcoin address validated
-    scriptPubKey: string;            //  (string) The hex-encoded scriptPubKey generated by the address
-    isscript: boolean;               //  (boolean) If the key is a script
-    iswitness: boolean;              //  (boolean) If the address is a witness
-    witness_version?: boolean;       //  (numeric, optional) The version number of the witness program
-    witness_program: string;         //  (string, optional) The hex value of the witness program
-    confidential_key?: string;       //  (string) Elements only
-    unconfidential?: string;         //  (string) Elements only
-  }
-
-  export interface ChainTips {
-    height: number;                  //  (numeric) height of the chain tip
-    hash: string;                    //  (string) block hash of the tip
-    branchlen: number;               //  (numeric) zero for main chain, otherwise length of branch connecting the tip to the main chain
-    status: 'invalid' | 'headers-only' | 'valid-headers' | 'valid-fork' | 'active';
-  }
-
-  export interface BlockchainInfo {
-    chain: number;                   // (string) current network name as defined in BIP70 (main, test, regtest)
-    blocks: number;                  // (numeric) the current number of blocks processed in the server
-    headers: number;                 // (numeric) the current number of headers we have validated
-    bestblockhash: string,           // (string) the hash of the currently best block
-    difficulty: number;              // (numeric) the current difficulty
-    mediantime: number;              // (numeric) median time for the current best block
-    verificationprogress: number;    // (numeric) estimate of verification progress [0..1]
-    initialblockdownload: boolean;   // (bool) (debug information) estimate of whether this node is in Initial Block Download mode.
-    chainwork: string                // (string) total amount of work in active chain, in hexadecimal
-    size_on_disk: number;            // (numeric) the estimated size of the block and undo files on disk
-    pruned: number;                  // (boolean) if the blocks are subject to pruning
-    pruneheight: number;             // (numeric) lowest-height complete block stored (only present if pruning is enabled)
-    automatic_pruning: number;       // (boolean) whether automatic pruning is enabled (only present if pruning is enabled)
-    prune_target_size: number;       // (numeric) the target size used by pruning (only present if automatic pruning is enabled)
-    softforks: SoftFork[];           // (array) status of softforks in progress
-    bip9_softforks: { [name: string]: Bip9SoftForks[] } // (object) status of BIP9 softforks in progress
-    warnings: string;                // (string) any network and blockchain warnings.
-  }
-
-  interface SoftFork {
-    id: string;                      // (string) name of softfork
-    version: number;                 // (numeric) block version
-    reject: {                        // (object) progress toward rejecting pre-softfork blocks
-      status: boolean;               // (boolean) true if threshold reached
-    },
-  }
-  interface Bip9SoftForks {
-    status: number;                  // (string) one of defined, started, locked_in, active, failed
-    bit: number;                     // (numeric) the bit (0-28) in the block version field used to signal this softfork (only for started status)
-    startTime: number;               // (numeric) the minimum median time past of a block at which the bit gains its meaning
-    timeout: number;                 // (numeric) the median time past of a block at which the deployment is considered failed if not yet locked in
-    since: number;                   // (numeric) height of the first block to which the status applies
-    statistics: {                    // (object) numeric statistics about BIP9 signalling for a softfork (only for started status)
-      period: number;                // (numeric) the length in blocks of the BIP9 signalling period 
-      threshold: number;             // (numeric) the number of blocks with the version bit set required to activate the feature 
-      elapsed: number;               // (numeric) the number of blocks elapsed since the beginning of the current period 
-      count: number;                 // (numeric) the number of blocks with the version bit set in the current period 
-      possible: boolean;             // (boolean) returns false if there are not enough blocks left in this period to pass activation threshold 
-    }
-  }
-
-}

backend/src/api/bitcoin/bitcoin-api.ts

@@ -1,311 +0,0 @@
-import * as bitcoinjs from 'bitcoinjs-lib';
-import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
-import { IBitcoinApi } from './bitcoin-api.interface';
-import { IEsploraApi } from './esplora-api.interface';
-import blocks from '../blocks';
-import mempool from '../mempool';
-import { TransactionExtended } from '../../mempool.interfaces';
-
-class BitcoinApi implements AbstractBitcoinApi {
-  private rawMempoolCache: IBitcoinApi.RawMempool | null = null;
-  protected bitcoindClient: any;
-
-  constructor(bitcoinClient: any) {
-    this.bitcoindClient = bitcoinClient;
-  }
-
-  $getRawTransaction(txId: string, skipConversion = false, addPrevout = false): Promise<IEsploraApi.Transaction> {
-    // If the transaction is in the mempool we already converted and fetched the fee. Only prevouts are missing
-    const txInMempool = mempool.getMempool()[txId];
-    if (txInMempool && addPrevout) {
-      return this.$addPrevouts(txInMempool);
-    }
-
-    // Special case to fetch the Coinbase transaction
-    if (txId === '4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b') {
-      return this.$returnCoinbaseTransaction();
-    }
-
-    return this.bitcoindClient.getRawTransaction(txId, true)
-      .then((transaction: IBitcoinApi.Transaction) => {
-        if (skipConversion) {
-          transaction.vout.forEach((vout) => {
-            vout.value = vout.value * 100000000;
-          });
-          return transaction;
-        }
-        return this.$convertTransaction(transaction, addPrevout);
-      });
-  }
-
-  $getBlockHeightTip(): Promise<number> {
-    return this.bitcoindClient.getChainTips()
-      .then((result: IBitcoinApi.ChainTips[]) => result[0].height);
-  }
-
-  $getTxIdsForBlock(hash: string): Promise<string[]> {
-    return this.bitcoindClient.getBlock(hash, 1)
-      .then((rpcBlock: IBitcoinApi.Block) => rpcBlock.tx);
-  }
-
-  $getRawBlock(hash: string): Promise<string> {
-    return this.bitcoindClient.getBlock(hash, 0);
-  }
-
-  $getBlockHash(height: number): Promise<string> {
-    return this.bitcoindClient.getBlockHash(height);
-  }
-
-  $getBlockHeader(hash: string): Promise<string> {
-    return this.bitcoindClient.getBlockHeader(hash, false);
-  }
-
-  async $getBlock(hash: string): Promise<IEsploraApi.Block> {
-    const foundBlock = blocks.getBlocks().find((block) => block.id === hash);
-    if (foundBlock) {
-      return foundBlock;
-    }
-
-    return this.bitcoindClient.getBlock(hash)
-      .then((block: IBitcoinApi.Block) => this.convertBlock(block));
-  }
-
-  $getAddress(address: string): Promise<IEsploraApi.Address> {
-    throw new Error('Method getAddress not supported by the Bitcoin RPC API.');
-  }
-
-  $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getAddressTransactions not supported by the Bitcoin RPC API.');
-  }
-
-  $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]> {
-    return this.bitcoindClient.getRawMemPool();
-  }
-
-  $getAddressPrefix(prefix: string): string[] {
-    const found: string[] = [];
-    const mp = mempool.getMempool();
-    for (const tx in mp) {
-      for (const vout of mp[tx].vout) {
-        if (vout.scriptpubkey_address.indexOf(prefix) === 0) {
-          found.push(vout.scriptpubkey_address);
-          if (found.length >= 10) {
-            return found;
-          }
-        }
-      }
-    }
-    return found;
-  }
-
-  $sendRawTransaction(rawTransaction: string): Promise<string> {
-    return this.bitcoindClient.sendRawTransaction(rawTransaction);
-  }
-
-  protected async $convertTransaction(transaction: IBitcoinApi.Transaction, addPrevout: boolean): Promise<IEsploraApi.Transaction> {
-    let esploraTransaction: IEsploraApi.Transaction = {
-      txid: transaction.txid,
-      version: transaction.version,
-      locktime: transaction.locktime,
-      size: transaction.size,
-      weight: transaction.weight,
-      fee: 0,
-      vin: [],
-      vout: [],
-      status: { confirmed: false },
-    };
-
-    esploraTransaction.vout = transaction.vout.map((vout) => {
-      return {
-        value: vout.value * 100000000,
-        scriptpubkey: vout.scriptPubKey.hex,
-        scriptpubkey_address: vout.scriptPubKey && vout.scriptPubKey.address ? vout.scriptPubKey.address
-          : vout.scriptPubKey.addresses ? vout.scriptPubKey.addresses[0] : '',
-        scriptpubkey_asm: vout.scriptPubKey.asm ? this.convertScriptSigAsm(vout.scriptPubKey.asm) : '',
-        scriptpubkey_type: this.translateScriptPubKeyType(vout.scriptPubKey.type),
-      };
-    });
-
-    esploraTransaction.vin = transaction.vin.map((vin) => {
-      return {
-        is_coinbase: !!vin.coinbase,
-        prevout: null,
-        scriptsig: vin.scriptSig && vin.scriptSig.hex || vin.coinbase || '',
-        scriptsig_asm: vin.scriptSig && this.convertScriptSigAsm(vin.scriptSig.asm) || '',
-        sequence: vin.sequence,
-        txid: vin.txid || '',
-        vout: vin.vout || 0,
-        witness: vin.txinwitness,
-      };
-    });
-
-    if (transaction.confirmations) {
-      esploraTransaction.status = {
-        confirmed: true,
-        block_height: blocks.getCurrentBlockHeight() - transaction.confirmations + 1,
-        block_hash: transaction.blockhash,
-        block_time: transaction.blocktime,
-      };
-    }
-
-    if (transaction.confirmations) {
-      esploraTransaction = await this.$calculateFeeFromInputs(esploraTransaction, addPrevout);
-    } else {
-      esploraTransaction = await this.$appendMempoolFeeData(esploraTransaction);
-      if (addPrevout) {
-        esploraTransaction = await this.$calculateFeeFromInputs(esploraTransaction, addPrevout);
-      }
-    }
-
-    return esploraTransaction;
-  }
-
-  private convertBlock(block: IBitcoinApi.Block): IEsploraApi.Block {
-    return {
-      id: block.hash,
-      height: block.height,
-      version: block.version,
-      timestamp: block.time,
-      bits: parseInt(block.bits, 16),
-      nonce: block.nonce,
-      difficulty: block.difficulty,
-      merkle_root: block.merkleroot,
-      tx_count: block.nTx,
-      size: block.size,
-      weight: block.weight,
-      previousblockhash: block.previousblockhash,
-    };
-  }
-
-  private translateScriptPubKeyType(outputType: string): string {
-    const map = {
-      'pubkey': 'p2pk',
-      'pubkeyhash': 'p2pkh',
-      'scripthash': 'p2sh',
-      'witness_v0_keyhash': 'v0_p2wpkh',
-      'witness_v0_scripthash': 'v0_p2wsh',
-      'witness_v1_taproot': 'v1_p2tr',
-      'nonstandard': 'nonstandard',
-      'nulldata': 'op_return'
-    };
-
-    if (map[outputType]) {
-      return map[outputType];
-    } else {
-      return '';
-    }
-  }
-
-  private async $appendMempoolFeeData(transaction: IEsploraApi.Transaction): Promise<IEsploraApi.Transaction> {
-    if (transaction.fee) {
-      return transaction;
-    }
-    let mempoolEntry: IBitcoinApi.MempoolEntry;
-    if (!mempool.isInSync() && !this.rawMempoolCache) {
-      this.rawMempoolCache = await this.$getRawMempoolVerbose();
-    }
-    if (this.rawMempoolCache && this.rawMempoolCache[transaction.txid]) {
-      mempoolEntry = this.rawMempoolCache[transaction.txid];
-    } else {
-      mempoolEntry = await this.$getMempoolEntry(transaction.txid);
-    }
-    transaction.fee = mempoolEntry.fees.base * 100000000;
-    return transaction;
-  }
-
-  protected async $addPrevouts(transaction: TransactionExtended): Promise<TransactionExtended> {
-    for (const vin of transaction.vin) {
-      if (vin.prevout) {
-        continue;
-      }
-      const innerTx = await this.$getRawTransaction(vin.txid, false);
-      vin.prevout = innerTx.vout[vin.vout];
-      this.addInnerScriptsToVin(vin);
-    }
-    return transaction;
-  }
-
-  protected $returnCoinbaseTransaction(): Promise<IEsploraApi.Transaction> {
-    return this.bitcoindClient.getBlock('000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f', 2)
-      .then((block: IBitcoinApi.Block) => {
-        return this.$convertTransaction(Object.assign(block.tx[0], {
-          confirmations: blocks.getCurrentBlockHeight() + 1,
-          blocktime: 1231006505 }), false);
-      });
-  }
-
-  private $getMempoolEntry(txid: string): Promise<IBitcoinApi.MempoolEntry> {
-    return this.bitcoindClient.getMempoolEntry(txid);
-  }
-
-  private $getRawMempoolVerbose(): Promise<IBitcoinApi.RawMempool> {
-    return this.bitcoindClient.getRawMemPool(true);
-  }
-
-  private async $calculateFeeFromInputs(transaction: IEsploraApi.Transaction, addPrevout: boolean): Promise<IEsploraApi.Transaction> {
-    if (transaction.vin[0].is_coinbase) {
-      transaction.fee = 0;
-      return transaction;
-    }
-    let totalIn = 0;
-    for (const vin of transaction.vin) {
-      const innerTx = await this.$getRawTransaction(vin.txid, !addPrevout);
-      if (addPrevout) {
-        vin.prevout = innerTx.vout[vin.vout];
-        this.addInnerScriptsToVin(vin);
-      }
-      totalIn += innerTx.vout[vin.vout].value;
-    }
-    const totalOut = transaction.vout.reduce((p, output) => p + output.value, 0);
-    transaction.fee = parseFloat((totalIn - totalOut).toFixed(8));
-    return transaction;
-  }
-
-  private convertScriptSigAsm(str: string): string {
-    const a = str.split(' ');
-    const b: string[] = [];
-    a.forEach((chunk) => {
-      if (chunk.substr(0, 3) === 'OP_') {
-        chunk = chunk.replace(/^OP_(\d+)/, 'OP_PUSHNUM_$1');
-        chunk = chunk.replace('OP_CHECKSEQUENCEVERIFY', 'OP_CSV');
-        b.push(chunk);
-      } else {
-        chunk = chunk.replace('[ALL]', '01');
-        if (chunk === '0') {
-          b.push('OP_0');
-        } else {
-          b.push('OP_PUSHBYTES_' + Math.round(chunk.length / 2) + ' ' + chunk);
-        }
-      }
-    });
-    return b.join(' ');
-  }
-
-  private addInnerScriptsToVin(vin: IEsploraApi.Vin): void {
-    if (!vin.prevout) {
-      return;
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'p2sh') {
-      const redeemScript = vin.scriptsig_asm.split(' ').reverse()[0];
-      vin.inner_redeemscript_asm = this.convertScriptSigAsm(bitcoinjs.script.toASM(Buffer.from(redeemScript, 'hex')));
-      if (vin.witness && vin.witness.length > 2) {
-        const witnessScript = vin.witness[vin.witness.length - 1];
-        vin.inner_witnessscript_asm = this.convertScriptSigAsm(bitcoinjs.script.toASM(Buffer.from(witnessScript, 'hex')));
-      }
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'v0_p2wsh' && vin.witness) {
-      const witnessScript = vin.witness[vin.witness.length - 1];
-      vin.inner_witnessscript_asm = this.convertScriptSigAsm(bitcoinjs.script.toASM(Buffer.from(witnessScript, 'hex')));
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'v1_p2tr' && vin.witness && vin.witness.length > 1) {
-      const witnessScript = vin.witness[vin.witness.length - 2];
-      vin.inner_witnessscript_asm = this.convertScriptSigAsm(bitcoinjs.script.toASM(Buffer.from(witnessScript, 'hex')));
-    }
-  }
-
-}
-
-export default BitcoinApi;

backend/src/api/bitcoin/bitcoin-client.ts

@@ -1,13 +0,0 @@
-import config from '../../config';
-import * as bitcoin from '@mempool/bitcoin';
-import { BitcoinRpcCredentials } from './bitcoin-api-abstract-factory';
-
-const nodeRpcCredentials: BitcoinRpcCredentials = {
-  host: config.CORE_RPC.HOST,
-  port: config.CORE_RPC.PORT,
-  user: config.CORE_RPC.USERNAME,
-  pass: config.CORE_RPC.PASSWORD,
-  timeout: 60000,
-};
-
-export default new bitcoin.Client(nodeRpcCredentials);

backend/src/api/bitcoin/bitcoin-second-client.ts

@@ -1,13 +0,0 @@
-import config from '../../config';
-import * as bitcoin from '@mempool/bitcoin';
-import { BitcoinRpcCredentials } from './bitcoin-api-abstract-factory';
-
-const nodeRpcCredentials: BitcoinRpcCredentials = {
-  host: config.SECOND_CORE_RPC.HOST,
-  port: config.SECOND_CORE_RPC.PORT,
-  user: config.SECOND_CORE_RPC.USERNAME,
-  pass: config.SECOND_CORE_RPC.PASSWORD,
-  timeout: 60000,
-};
-
-export default new bitcoin.Client(nodeRpcCredentials);

backend/src/api/bitcoin/bitcoind-api.ts

@@ -0,0 +1,110 @@
+const config = require('../../../mempool-config.json');
+import * as bitcoin from 'bitcoin';
+import { ITransaction, IMempoolInfo, IBlock } from '../../interfaces';
+import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
+
+class BitcoindApi implements AbstractBitcoinApi {
+  client: any;
+
+  constructor() {
+    this.client = new bitcoin.Client({
+      host: config.BITCOIN_NODE_HOST,
+      port: config.BITCOIN_NODE_PORT,
+      user: config.BITCOIN_NODE_USER,
+      pass: config.BITCOIN_NODE_PASS,
+    });
+  }
+
+  getMempoolInfo(): Promise<IMempoolInfo> {
+    return new Promise((resolve, reject) => {
+      this.client.getMempoolInfo((err: Error, mempoolInfo: any) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(mempoolInfo);
+      });
+    });
+  }
+
+  getRawMempool(): Promise<ITransaction['txid'][]> {
+    return new Promise((resolve, reject) => {
+      this.client.getRawMemPool((err: Error, transactions: ITransaction['txid'][]) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(transactions);
+      });
+    });
+  }
+
+  getRawTransaction(txId: string): Promise<ITransaction> {
+    return new Promise((resolve, reject) => {
+      this.client.getRawTransaction(txId, true, (err: Error, txData: ITransaction) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(txData);
+      });
+    });
+  }
+
+  getBlockCount(): Promise<number> {
+    return new Promise((resolve, reject) => {
+      this.client.getBlockCount((err: Error, response: number) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(response);
+      });
+    });
+  }
+
+  getBlockAndTransactions(hash: string, verbosity:  1 | 2 = 1): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      this.client.getBlock(hash, verbosity, (err: Error, block: IBlock) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(block);
+      });
+    });
+  }
+
+  getBlockHash(height: number): Promise<string> {
+    return new Promise((resolve, reject) => {
+      this.client.getBlockHash(height, (err: Error, response: string) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(response);
+      });
+    });
+  }
+
+  getBlock(hash: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getBlocks(): Promise<string> {
+    throw new Error('Method not implemented.');
+  }
+  getBlocksFromHeight(height: number): Promise<string> {
+    throw new Error('Method not implemented.');
+  }
+  getBlockTransactions(hash: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getBlockTransactionsFromIndex(hash: string, index: number): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getAddress(address: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getAddressTransactions(address: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getAddressTransactionsFromLastSeenTxid(address: string, lastSeenTxid: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+}
+
+export default BitcoindApi;

backend/src/api/bitcoin/electrs-api.ts

@@ -0,0 +1,229 @@
+const config = require('../../../mempool-config.json');
+import { ITransaction, IMempoolInfo, IBlock } from '../../interfaces';
+import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
+import * as request from 'request';
+
+class ElectrsApi implements AbstractBitcoinApi {
+
+  constructor() {
+  }
+
+  getMempoolInfo(): Promise<IMempoolInfo> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/mempool', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          resolve({
+            size: response.count,
+            bytes: response.vsize,
+          });
+        }
+      });
+    });
+  }
+
+  getRawMempool(): Promise<ITransaction['txid'][]> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/mempool/txids', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getRawTransaction(txId: string): Promise<ITransaction> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/tx/' + txId, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          response.vsize = Math.round(response.weight / 4);
+          response.fee = response.fee / 100000000;
+          response.blockhash = response.status.block_hash;
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlockCount(): Promise<number> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/blocks/tip/height', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlockAndTransactions(hash: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block/' + hash, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          request(config.ELECTRS_API_URL + '/block/' + hash + '/txids', { json: true, timeout: 10000 }, (err2, res2, response2) => {
+            if (err2) {
+              reject(err2);
+            } else if (res.statusCode !== 200) {
+              reject(response);
+            } else {
+              const block = response;
+              block.hash = hash;
+              block.nTx = block.tx_count;
+              block.time = block.timestamp;
+              block.tx = response2;
+
+              resolve(block);
+            }
+          });
+        }
+      });
+    });
+  }
+
+  getBlockHash(height: number): Promise<string> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block-height/' + height, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlocks(): Promise<string> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/blocks', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlocksFromHeight(height: number): Promise<string> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/blocks/' + height, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlock(hash: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block/' + hash, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlockTransactions(hash: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block/' + hash + '/txs', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlockTransactionsFromIndex(hash: string, index: number): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block/' + hash + '/txs/' + index, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getAddress(address: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/address/' + address, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getAddressTransactions(address: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/address/' + address + '/txs', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getAddressTransactionsFromLastSeenTxid(address: string, lastSeenTxid: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/address/' + address + '/txs/chain/' + lastSeenTxid,
+        { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+}
+
+export default ElectrsApi;

backend/src/api/bitcoin/electrum-api.interface.ts

@@ -1,12 +0,0 @@
-export namespace IElectrumApi {
-  export interface ScriptHashBalance {
-    confirmed: number;
-    unconfirmed: number;
-  }
-
-  export interface ScriptHashHistory {
-    height: number;
-    tx_hash: string;
-    fee?: number;
-  }
-}

backend/src/api/bitcoin/electrum-api.ts

@@ -1,153 +0,0 @@
-import config from '../../config';
-import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
-import { IEsploraApi } from './esplora-api.interface';
-import { IElectrumApi } from './electrum-api.interface';
-import BitcoinApi from './bitcoin-api';
-import logger from '../../logger';
-import * as ElectrumClient from '@mempool/electrum-client';
-import * as sha256 from 'crypto-js/sha256';
-import * as hexEnc from 'crypto-js/enc-hex';
-import loadingIndicators from '../loading-indicators';
-import memoryCache from '../memory-cache';
-
-class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
-  private electrumClient: any;
-
-  constructor(bitcoinClient: any) {
-    super(bitcoinClient);
-
-    const electrumConfig = { client: 'mempool-v2', version: '1.4' };
-    const electrumPersistencePolicy = { retryPeriod: 10000, maxRetry: 1000, callback: null };
-
-    const electrumCallbacks = {
-      onConnect: (client, versionInfo) => { logger.info(`Connected to Electrum Server at ${config.ELECTRUM.HOST}:${config.ELECTRUM.PORT} (${JSON.stringify(versionInfo)})`); },
-      onClose: (client) => { logger.info(`Disconnected from Electrum Server at ${config.ELECTRUM.HOST}:${config.ELECTRUM.PORT}`); },
-      onError: (err) => { logger.err(`Electrum error: ${JSON.stringify(err)}`); },
-      onLog: (str) => { logger.debug(str); },
-    };
-
-    this.electrumClient = new ElectrumClient(
-      config.ELECTRUM.PORT,
-      config.ELECTRUM.HOST,
-      config.ELECTRUM.TLS_ENABLED ? 'tls' : 'tcp',
-      null,
-      electrumCallbacks
-    );
-
-    this.electrumClient.initElectrum(electrumConfig, electrumPersistencePolicy)
-      .then(() => {})
-      .catch((err) => {
-        logger.err(`Error connecting to Electrum Server at ${config.ELECTRUM.HOST}:${config.ELECTRUM.PORT}`);
-      });
-  }
-
-  async $getAddress(address: string): Promise<IEsploraApi.Address> {
-    const addressInfo = await this.bitcoindClient.validateAddress(address);
-    if (!addressInfo || !addressInfo.isvalid) {
-      return ({
-        'address': address,
-        'chain_stats': {
-          'funded_txo_count': 0,
-          'funded_txo_sum': 0,
-          'spent_txo_count': 0,
-          'spent_txo_sum': 0,
-          'tx_count': 0
-        },
-        'mempool_stats': {
-          'funded_txo_count': 0,
-          'funded_txo_sum': 0,
-          'spent_txo_count': 0,
-          'spent_txo_sum': 0,
-          'tx_count': 0
-        }
-      });
-    }
-
-    try {
-      const balance = await this.$getScriptHashBalance(addressInfo.scriptPubKey);
-      const history = await this.$getScriptHashHistory(addressInfo.scriptPubKey);
-
-      const unconfirmed = history.filter((h) => h.fee).length;
-
-      return {
-        'address': addressInfo.address,
-        'chain_stats': {
-          'funded_txo_count': 0,
-          'funded_txo_sum': balance.confirmed ? balance.confirmed : 0,
-          'spent_txo_count': 0,
-          'spent_txo_sum': balance.confirmed < 0 ? balance.confirmed : 0,
-          'tx_count': history.length - unconfirmed,
-        },
-        'mempool_stats': {
-          'funded_txo_count': 0,
-          'funded_txo_sum': balance.unconfirmed > 0 ? balance.unconfirmed : 0,
-          'spent_txo_count': 0,
-          'spent_txo_sum': balance.unconfirmed < 0 ? -balance.unconfirmed : 0,
-          'tx_count': unconfirmed,
-        },
-        'electrum': true,
-      };
-    } catch (e: any) {
-      throw new Error(typeof e === 'string' ? e : e && e.message || e);
-    }
-  }
-
-  async $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]> {
-    const addressInfo = await this.bitcoindClient.validateAddress(address);
-    if (!addressInfo || !addressInfo.isvalid) {
-     return [];
-    }
-
-    try {
-      loadingIndicators.setProgress('address-' + address, 0);
-
-      const transactions: IEsploraApi.Transaction[] = [];
-      const history = await this.$getScriptHashHistory(addressInfo.scriptPubKey);
-      history.sort((a, b) => (b.height || 9999999) - (a.height || 9999999));
-
-      let startingIndex = 0;
-      if (lastSeenTxId) {
-        const pos = history.findIndex((historicalTx) => historicalTx.tx_hash === lastSeenTxId);
-        if (pos) {
-          startingIndex = pos + 1;
-        }
-      }
-      const endIndex = Math.min(startingIndex + 10, history.length);
-
-      for (let i = startingIndex; i < endIndex; i++) {
-        const tx = await this.$getRawTransaction(history[i].tx_hash, false, true);
-        transactions.push(tx);
-        loadingIndicators.setProgress('address-' + address, (i + 1) / endIndex * 100);
-      }
-
-      return transactions;
-    } catch (e: any) {
-      loadingIndicators.setProgress('address-' + address, 100);
-      throw new Error(typeof e === 'string' ? e : e && e.message || e);
-    }
-  }
-
-  private $getScriptHashBalance(scriptHash: string): Promise<IElectrumApi.ScriptHashBalance> {
-    return this.electrumClient.blockchainScripthash_getBalance(this.encodeScriptHash(scriptHash));
-  }
-
-  private $getScriptHashHistory(scriptHash: string): Promise<IElectrumApi.ScriptHashHistory[]> {
-    const fromCache = memoryCache.get<IElectrumApi.ScriptHashHistory[]>('Scripthash_getHistory', scriptHash);
-    if (fromCache) {
-      return Promise.resolve(fromCache);
-    }
-    return this.electrumClient.blockchainScripthash_getHistory(this.encodeScriptHash(scriptHash))
-      .then((history) => {
-        memoryCache.set('Scripthash_getHistory', scriptHash, history, 2);
-        return history;
-      });
-  }
-
-  private encodeScriptHash(scriptPubKey: string): string {
-    const addrScripthash = hexEnc.stringify(sha256(hexEnc.parse(scriptPubKey)));
-    return addrScripthash.match(/.{2}/g).reverse().join('');
-  }
-
-}
-
-export default BitcoindElectrsApi;

backend/src/api/bitcoin/esplora-api.interface.ts

@@ -1,170 +0,0 @@
-export namespace IEsploraApi {
-  export interface Transaction {
-    txid: string;
-    version: number;
-    locktime: number;
-    size: number;
-    weight: number;
-    fee: number;
-    vin: Vin[];
-    vout: Vout[];
-    status: Status;
-    hex?: string;
-  }
-
-  export interface Recent {
-    txid: string;
-    fee: number;
-    vsize: number;
-    value: number;
-  }
-
-  export interface Vin {
-    txid: string;
-    vout: number;
-    is_coinbase: boolean;
-    scriptsig: string;
-    scriptsig_asm: string;
-    inner_redeemscript_asm?: string;
-    inner_witnessscript_asm?: string;
-    sequence: any;
-    witness?: string[];
-    prevout: Vout | null;
-    // Elements
-    is_pegin?: boolean;
-    issuance?: Issuance;
-  }
-
-  interface Issuance {
-    asset_id: string;
-    is_reissuance: string;
-    asset_blinding_nonce: string;
-    asset_entropy: string;
-    contract_hash: string;
-    assetamount?: number;
-    assetamountcommitment?: string;
-    tokenamount?: number;
-    tokenamountcommitment?: string;
-  }
-
-  export interface Vout {
-    scriptpubkey: string;
-    scriptpubkey_asm: string;
-    scriptpubkey_type: string;
-    scriptpubkey_address: string;
-    value: number;
-    // Elements
-    valuecommitment?: number;
-    asset?: string;
-    pegout?: Pegout;
-  }
-
-  interface Pegout {
-    genesis_hash: string;
-    scriptpubkey: string;
-    scriptpubkey_asm: string;
-    scriptpubkey_address: string;
-  }
-
-  export interface Status {
-    confirmed: boolean;
-    block_height?: number;
-    block_hash?: string;
-    block_time?: number;
-  }
-
-  export interface Block {
-    id: string;
-    height: number;
-    version: number;
-    timestamp: number;
-    bits: number;
-    nonce: number;
-    difficulty: number;
-    merkle_root: string;
-    tx_count: number;
-    size: number;
-    weight: number;
-    previousblockhash: string;
-  }
-
-  export interface Address {
-    address: string;
-    chain_stats: ChainStats;
-    mempool_stats: MempoolStats;
-    electrum?: boolean;
-  }
-
-  export interface ChainStats {
-    funded_txo_count: number;
-    funded_txo_sum: number;
-    spent_txo_count: number;
-    spent_txo_sum: number;
-    tx_count: number;
-  }
-
-  export interface MempoolStats {
-    funded_txo_count: number;
-    funded_txo_sum: number;
-    spent_txo_count: number;
-    spent_txo_sum: number;
-    tx_count: number;
-  }
-
-  export interface Outspend {
-    spent: boolean;
-    txid: string;
-    vin: number;
-    status: Status;
-  }
-
-  export interface Asset {
-    asset_id: string;
-    issuance_txin: IssuanceTxin;
-    issuance_prevout: IssuancePrevout;
-    reissuance_token: string;
-    contract_hash: string;
-    status: Status;
-    chain_stats: AssetStats;
-    mempool_stats: AssetStats;
-  }
-
-  export interface AssetExtended extends Asset {
-    name: string;
-    ticker: string;
-    precision: number;
-    entity: Entity;
-    version: number;
-    issuer_pubkey: string;
-  }
-
-  export interface Entity {
-    domain: string;
-  }
-
-  interface IssuanceTxin {
-    txid: string;
-    vin: number;
-  }
-
-  interface IssuancePrevout {
-    txid: string;
-    vout: number;
-  }
-
-  interface AssetStats {
-    tx_count: number;
-    issuance_count: number;
-    issued_amount: number;
-    burned_amount: number;
-    has_blinded_issuances: boolean;
-    reissuance_tokens: number;
-    burned_reissuance_tokens: number;
-    peg_in_count: number;
-    peg_in_amount: number;
-    peg_out_count: number;
-    peg_out_amount: number;
-    burn_count: number;
-  }
-
-}

backend/src/api/bitcoin/esplora-api.ts

@@ -1,65 +0,0 @@
-import config from '../../config';
-import axios, { AxiosRequestConfig } from 'axios';
-import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
-import { IEsploraApi } from './esplora-api.interface';
-
-class ElectrsApi implements AbstractBitcoinApi {
-  axiosConfig: AxiosRequestConfig = {
-    timeout: 10000,
-  };
-
-  constructor() { }
-
-  $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]> {
-    return axios.get<IEsploraApi.Transaction['txid'][]>(config.ESPLORA.REST_API_URL + '/mempool/txids', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getRawTransaction(txId: string): Promise<IEsploraApi.Transaction> {
-    return axios.get<IEsploraApi.Transaction>(config.ESPLORA.REST_API_URL + '/tx/' + txId, this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlockHeightTip(): Promise<number> {
-    return axios.get<number>(config.ESPLORA.REST_API_URL + '/blocks/tip/height', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getTxIdsForBlock(hash: string): Promise<string[]> {
-    return axios.get<string[]>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/txids', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlockHash(height: number): Promise<string> {
-    return axios.get<string>(config.ESPLORA.REST_API_URL + '/block-height/' + height, this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlockHeader(hash: string): Promise<string> {
-    return axios.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/header', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlock(hash: string): Promise<IEsploraApi.Block> {
-    return axios.get<IEsploraApi.Block>(config.ESPLORA.REST_API_URL + '/block/' + hash, this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getAddress(address: string): Promise<IEsploraApi.Address> {
-    throw new Error('Method getAddress not implemented.');
-  }
-
-  $getAddressTransactions(address: string, txId?: string): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getAddressTransactions not implemented.');
-  }
-
-  $getAddressPrefix(prefix: string): string[] {
-    throw new Error('Method not implemented.');
-  }
-
-  $sendRawTransaction(rawTransaction: string): Promise<string> {
-    throw new Error('Method not implemented.');
-  }
-}
-
-export default ElectrsApi;

backend/src/api/blocks.ts

@@ -1,148 +1,214 @@
-import config from '../config';
+const config = require('../../mempool-config.json');
 import bitcoinApi from './bitcoin/bitcoin-api-factory';
-import logger from '../logger';
+import { DB } from '../database';
+import { IBlock, ITransaction } from '../interfaces';
 import memPool from './mempool';
-import { BlockExtended, TransactionExtended } from '../mempool.interfaces';
-import { Common } from './common';
-import diskCache from './disk-cache';
-import transactionUtils from './transaction-utils';
-import bitcoinClient from './bitcoin/bitcoin-client';
 
 class Blocks {
-  private blocks: BlockExtended[] = [];
+  private blocks: IBlock[] = [];
+  private newBlockCallback: Function | undefined;
   private currentBlockHeight = 0;
-  private currentDifficulty = 0;
-  private lastDifficultyAdjustmentTime = 0;
-  private previousDifficultyRetarget = 0;
-  private newBlockCallbacks: ((block: BlockExtended, txIds: string[], transactions: TransactionExtended[]) => void)[] = [];
 
-  constructor() { }
+  constructor() {
+    setInterval(this.$clearOldTransactionsAndBlocksFromDatabase.bind(this), 86400000);
+  }
 
-  public getBlocks(): BlockExtended[] {
+  public setNewBlockCallback(fn: Function) {
+    this.newBlockCallback = fn;
+  }
+
+  public getBlocks(): IBlock[] {
     return this.blocks;
   }
 
-  public setBlocks(blocks: BlockExtended[]) {
-    this.blocks = blocks;
+  public formatBlock(block: IBlock) {
+    return {
+      hash: block.hash,
+      height: block.height,
+      nTx: block.nTx - 1,
+      size: block.size,
+      time: block.time,
+      weight: block.weight,
+      fees: block.fees,
+      minFee: block.minFee,
+      maxFee: block.maxFee,
+      medianFee: block.medianFee,
+    };
   }
 
-  public setNewBlockCallback(fn: (block: BlockExtended, txIds: string[], transactions: TransactionExtended[]) => void) {
-    this.newBlockCallbacks.push(fn);
-  }
+  public async updateBlocks() {
+    try {
+      const blockCount = await bitcoinApi.getBlockCount();
 
-  public async $updateBlocks() {
-    const blockHeightTip = await bitcoinApi.$getBlockHeightTip();
-
-    if (this.blocks.length === 0) {
-      this.currentBlockHeight = blockHeightTip - config.MEMPOOL.INITIAL_BLOCKS_AMOUNT;
-    } else {
-      this.currentBlockHeight = this.blocks[this.blocks.length - 1].height;
-    }
-
-    if (blockHeightTip - this.currentBlockHeight > config.MEMPOOL.INITIAL_BLOCKS_AMOUNT * 2) {
-      logger.info(`${blockHeightTip - this.currentBlockHeight} blocks since tip. Fast forwarding to the ${config.MEMPOOL.INITIAL_BLOCKS_AMOUNT} recent blocks`);
-      this.currentBlockHeight = blockHeightTip - config.MEMPOOL.INITIAL_BLOCKS_AMOUNT;
-    }
-
-    if (!this.lastDifficultyAdjustmentTime) {
-      const blockchainInfo = await bitcoinClient.getBlockchainInfo();
-      if (blockchainInfo.blocks === blockchainInfo.headers) {
-        const heightDiff = blockHeightTip % 2016;
-        const blockHash = await bitcoinApi.$getBlockHash(blockHeightTip - heightDiff);
-        const block = await bitcoinApi.$getBlock(blockHash);
-        this.lastDifficultyAdjustmentTime = block.timestamp;
-        this.currentDifficulty = block.difficulty;
-
-        const previousPeriodBlockHash = await bitcoinApi.$getBlockHash(blockHeightTip - heightDiff - 2016);
-        const previousPeriodBlock = await bitcoinApi.$getBlock(previousPeriodBlockHash);
-        this.previousDifficultyRetarget = (block.difficulty - previousPeriodBlock.difficulty) / previousPeriodBlock.difficulty * 100;
-        logger.debug(`Initial difficulty adjustment data set.`);
+      if (this.blocks.length === 0) {
+        this.currentBlockHeight = blockCount - config.INITIAL_BLOCK_AMOUNT;
       } else {
-        logger.debug(`Blockchain headers (${blockchainInfo.headers}) and blocks (${blockchainInfo.blocks}) not in sync. Waiting...`);
+        this.currentBlockHeight = this.blocks[this.blocks.length - 1].height;
       }
-    }
 
-    while (this.currentBlockHeight < blockHeightTip) {
-      if (this.currentBlockHeight === 0) {
-        this.currentBlockHeight = blockHeightTip;
-      } else {
+      while (this.currentBlockHeight < blockCount) {
         this.currentBlockHeight++;
-        logger.debug(`New block found (#${this.currentBlockHeight})!`);
-      }
 
-      const transactions: TransactionExtended[] = [];
+        let block: IBlock | undefined;
 
-      const blockHash = await bitcoinApi.$getBlockHash(this.currentBlockHeight);
-      const block = await bitcoinApi.$getBlock(blockHash);
-      const txIds: string[] = await bitcoinApi.$getTxIdsForBlock(blockHash);
+        const storedBlock = await this.$getBlockFromDatabase(this.currentBlockHeight);
+        if (storedBlock) {
+          block = storedBlock;
+        } else {
+          const blockHash = await bitcoinApi.getBlockHash(this.currentBlockHeight);
+          block = await bitcoinApi.getBlockAndTransactions(blockHash);
 
-      const mempool = memPool.getMempool();
-      let transactionsFound = 0;
+          const coinbase = await memPool.getRawTransaction(block.tx[0], true);
+          if (coinbase && coinbase.totalOut) {
+            block.fees = coinbase.totalOut;
+          }
 
-      for (let i = 0; i < txIds.length; i++) {
-        if (mempool[txIds[i]]) {
-          transactions.push(mempool[txIds[i]]);
-          transactionsFound++;
-        } else if (config.MEMPOOL.BACKEND === 'esplora' || memPool.isInSync() || i === 0) {
-          logger.debug(`Fetching block tx ${i} of ${txIds.length}`);
-          try {
-            const tx = await transactionUtils.$getTransactionExtended(txIds[i]);
-            transactions.push(tx);
-          } catch (e) {
-            logger.debug('Error fetching block tx: ' + (e instanceof Error ? e.message : e));
-            if (i === 0) {
-              throw new Error('Failed to fetch Coinbase transaction: ' + txIds[i]);
+          const mempool = memPool.getMempool();
+          let found = 0;
+          let notFound = 0;
+
+          let transactions: ITransaction[] = [];
+
+          for (let i = 1; i < block.tx.length; i++) {
+            if (mempool[block.tx[i]]) {
+              transactions.push(mempool[block.tx[i]]);
+              found++;
+            } else {
+              console.log(`Fetching block tx ${i} of ${block.tx.length}`);
+              const tx = await memPool.getRawTransaction(block.tx[i]);
+              if (tx) {
+                transactions.push(tx);
+              }
+              notFound++;
             }
           }
+
+          transactions.sort((a, b) => b.feePerVsize - a.feePerVsize);
+          transactions = transactions.filter((tx: ITransaction) => tx.feePerVsize);
+
+          block.minFee = transactions[transactions.length - 1] ? transactions[transactions.length - 1].feePerVsize : 0;
+          block.maxFee = transactions[0] ? transactions[0].feePerVsize : 0;
+          block.medianFee = this.median(transactions.map((tx) => tx.feePerVsize));
+
+          console.log(`New block found (#${this.currentBlockHeight})! `
+           + `${found} of ${block.tx.length} found in mempool. ${notFound} not found.`);
+
+           if (this.newBlockCallback) {
+            this.newBlockCallback(block);
+          }
+
+          this.$saveBlockToDatabase(block);
+          this.$saveTransactionsToDatabase(block.height, transactions);
         }
-      }
 
-      transactions.forEach((tx) => {
-        if (!tx.cpfpChecked) {
-          Common.setRelativesAndGetCpfpInfo(tx, mempool);
+        this.blocks.push(block);
+        if (this.blocks.length > config.KEEP_BLOCK_AMOUNT) {
+          this.blocks.shift();
         }
-      });
 
-      logger.debug(`${transactionsFound} of ${txIds.length} found in mempool. ${txIds.length - transactionsFound} not found.`);
-
-      const blockExtended: BlockExtended = Object.assign({}, block);
-      blockExtended.reward = transactions[0].vout.reduce((acc, curr) => acc + curr.value, 0);
-      blockExtended.coinbaseTx = transactionUtils.stripCoinbaseTransaction(transactions[0]);
-      transactions.shift();
-      transactions.sort((a, b) => b.effectiveFeePerVsize - a.effectiveFeePerVsize);
-      blockExtended.medianFee = transactions.length > 0 ? Common.median(transactions.map((tx) => tx.effectiveFeePerVsize)) : 0;
-      blockExtended.feeRange = transactions.length > 0 ? Common.getFeesInRange(transactions, 8) : [0, 0];
-
-      if (block.height % 2016 === 0) {
-        this.previousDifficultyRetarget = (block.difficulty - this.currentDifficulty) / this.currentDifficulty * 100;
-        this.lastDifficultyAdjustmentTime = block.timestamp;
-        this.currentDifficulty = block.difficulty;
-      }
-
-      this.blocks.push(blockExtended);
-      if (this.blocks.length > config.MEMPOOL.INITIAL_BLOCKS_AMOUNT * 4) {
-        this.blocks = this.blocks.slice(-config.MEMPOOL.INITIAL_BLOCKS_AMOUNT * 4);
-      }
-
-      if (this.newBlockCallbacks.length) {
-        this.newBlockCallbacks.forEach((cb) => cb(blockExtended, txIds, transactions));
-      }
-      if (memPool.isInSync()) {
-        diskCache.$saveCacheToDisk();
       }
+    } catch (err) {
+      console.log('Error getBlockCount', err);
     }
   }
 
-  public getLastDifficultyAdjustmentTime(): number {
-    return this.lastDifficultyAdjustmentTime;
+  private async $getBlockFromDatabase(height: number): Promise<IBlock | undefined> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = `
+        SELECT * FROM blocks WHERE height = ?
+      `;
+
+      const [rows] = await connection.query<any>(query, [height]);
+      connection.release();
+
+      if (rows[0]) {
+        return rows[0];
+      }
+    } catch (e) {
+      console.log('$get() block error', e);
+    }
   }
 
-  public getPreviousDifficultyRetarget(): number {
-    return this.previousDifficultyRetarget;
+  private async $saveBlockToDatabase(block: IBlock) {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = `
+        INSERT IGNORE INTO blocks
+        (height, hash, size, weight, minFee, maxFee, time, fees, nTx, medianFee)
+        VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+      `;
+
+      const params: (any)[] = [
+        block.height,
+        block.hash,
+        block.size,
+        block.weight,
+        block.minFee,
+        block.maxFee,
+        block.time,
+        block.fees,
+        block.nTx - 1,
+        block.medianFee,
+      ];
+
+      await connection.query(query, params);
+      connection.release();
+    } catch (e) {
+      console.log('$create() block error', e);
+    }
   }
 
-  public getCurrentBlockHeight(): number {
-    return this.currentBlockHeight;
+  private async $saveTransactionsToDatabase(blockheight: number, transactions: ITransaction[]) {
+    try {
+      const connection = await DB.pool.getConnection();
+
+      for (let i = 0; i < transactions.length; i++) {
+        const query = `
+          INSERT IGNORE INTO transactions
+          (blockheight, txid, fee, feePerVsize)
+          VALUES(?, ?, ?, ?)
+        `;
+
+        const params: (any)[] = [
+          blockheight,
+          transactions[i].txid,
+          transactions[i].fee,
+          transactions[i].feePerVsize,
+        ];
+
+        await connection.query(query, params);
+      }
+
+      connection.release();
+    } catch (e) {
+      console.log('$create() transaction error', e);
+    }
+  }
+
+  private async $clearOldTransactionsAndBlocksFromDatabase() {
+    try {
+      const connection = await DB.pool.getConnection();
+      let query = `DELETE FROM blocks WHERE height < ?`;
+      await connection.query<any>(query, [this.currentBlockHeight - config.KEEP_BLOCK_AMOUNT]);
+      query = `DELETE FROM transactions WHERE blockheight < ?`;
+      await connection.query<any>(query, [this.currentBlockHeight - config.KEEP_BLOCK_AMOUNT]);
+      connection.release();
+    } catch (e) {
+      console.log('$clearOldTransactionsFromDatabase() error', e);
+    }
+  }
+
+  private median(numbers: number[]) {
+    if (!numbers.length) { return 0; }
+    let medianNr = 0;
+    const numsLen = numbers.length;
+    if (numsLen % 2 === 0) {
+        medianNr = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;
+    } else {
+        medianNr = numbers[(numsLen - 1) / 2];
+    }
+    return medianNr;
   }
 }
 

backend/src/api/common.ts

@@ -1,150 +0,0 @@
-import { CpfpInfo, TransactionExtended, TransactionStripped } from '../mempool.interfaces';
-import config from '../config';
-export class Common {
-  static nativeAssetId = '6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d';
-
-  static median(numbers: number[]) {
-    let medianNr = 0;
-    const numsLen = numbers.length;
-    if (numsLen % 2 === 0) {
-        medianNr = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;
-    } else {
-        medianNr = numbers[(numsLen - 1) / 2];
-    }
-    return medianNr;
-  }
-
-  static percentile(numbers: number[], percentile: number) {
-    if (percentile === 50) {
-      return this.median(numbers);
-    }
-    const index = Math.ceil(numbers.length * (100 - percentile) * 1e-2);
-    if (index < 0 || index > numbers.length - 1) {
-      return 0;
-    }
-    return numbers[index];
-  }
-
-  static getFeesInRange(transactions: TransactionExtended[], rangeLength: number) {
-    const arr = [transactions[transactions.length - 1].effectiveFeePerVsize];
-    const chunk = 1 / (rangeLength - 1);
-    let itemsToAdd = rangeLength - 2;
-
-    while (itemsToAdd > 0) {
-      arr.push(transactions[Math.floor(transactions.length * chunk * itemsToAdd)].effectiveFeePerVsize);
-      itemsToAdd--;
-    }
-
-    arr.push(transactions[0].effectiveFeePerVsize);
-    return arr;
-  }
-
-  static findRbfTransactions(added: TransactionExtended[], deleted: TransactionExtended[]): { [txid: string]: TransactionExtended } {
-    const matches: { [txid: string]: TransactionExtended } = {};
-    deleted
-      // The replaced tx must have at least one input with nSequence < maxint-1 (That’s the opt-in)
-      .filter((tx) => tx.vin.some((vin) => vin.sequence < 0xfffffffe))
-      .forEach((deletedTx) => {
-        const foundMatches = added.find((addedTx) => {
-          // The new tx must, absolutely speaking, pay at least as much fee as the replaced tx.
-          return addedTx.fee > deletedTx.fee
-            // The new transaction must pay more fee per kB than the replaced tx.
-            && addedTx.feePerVsize > deletedTx.feePerVsize
-            // Spends one or more of the same inputs
-            && deletedTx.vin.some((deletedVin) =>
-              addedTx.vin.some((vin) => vin.txid === deletedVin.txid));
-            });
-        if (foundMatches) {
-          matches[deletedTx.txid] = foundMatches;
-        }
-      });
-    return matches;
-  }
-
-  static stripTransaction(tx: TransactionExtended): TransactionStripped {
-    return {
-      txid: tx.txid,
-      fee: tx.fee,
-      vsize: tx.weight / 4,
-      value: tx.vout.reduce((acc, vout) => acc + (vout.value ? vout.value : 0), 0),
-    };
-  }
-
-  static sleep(ms: number): Promise<void> {
-    return new Promise((resolve) => {
-       setTimeout(() => {
-         resolve();
-       }, ms);
-    });
-  }
-
-  static shuffleArray(array: any[]) {
-    for (let i = array.length - 1; i > 0; i--) {
-        const j = Math.floor(Math.random() * (i + 1));
-        [array[i], array[j]] = [array[j], array[i]];
-    }
-  }
-
-  static setRelativesAndGetCpfpInfo(tx: TransactionExtended, memPool: { [txid: string]: TransactionExtended }): CpfpInfo {
-    const parents = this.findAllParents(tx, memPool);
-    const lowerFeeParents = parents.filter((parent) => parent.feePerVsize < tx.effectiveFeePerVsize);
-
-    let totalWeight = tx.weight + lowerFeeParents.reduce((prev, val) => prev + val.weight, 0);
-    let totalFees = tx.fee + lowerFeeParents.reduce((prev, val) => prev + val.fee, 0);
-
-    tx.ancestors = parents
-      .map((t) => {
-        return {
-          txid: t.txid,
-          weight: t.weight,
-          fee: t.fee,
-        };
-      });
-
-    // Add high (high fee) decendant weight and fees
-    if (tx.bestDescendant) {
-      totalWeight += tx.bestDescendant.weight;
-      totalFees += tx.bestDescendant.fee;
-    }
-
-    tx.effectiveFeePerVsize = Math.max(config.MEMPOOL.NETWORK === 'liquid' ? 0.1 : 1, totalFees / (totalWeight / 4));
-    tx.cpfpChecked = true;
-
-    return {
-      ancestors: tx.ancestors,
-      bestDescendant: tx.bestDescendant || null,
-    };
-  }
-
-
-  private static findAllParents(tx: TransactionExtended, memPool: { [txid: string]: TransactionExtended }): TransactionExtended[] {
-    let parents: TransactionExtended[] = [];
-    tx.vin.forEach((parent) => {
-      if (parents.find((p) => p.txid === parent.txid)) {
-        return;
-      }
-
-      const parentTx = memPool[parent.txid];
-      if (parentTx) {
-        if (tx.bestDescendant && tx.bestDescendant.fee / (tx.bestDescendant.weight / 4) > parentTx.feePerVsize) {
-          if (parentTx.bestDescendant && parentTx.bestDescendant.fee < tx.fee + tx.bestDescendant.fee) {
-            parentTx.bestDescendant = {
-              weight: tx.weight + tx.bestDescendant.weight,
-              fee: tx.fee + tx.bestDescendant.fee,
-              txid: tx.txid,
-            };
-          }
-        } else if (tx.feePerVsize > parentTx.feePerVsize) {
-          parentTx.bestDescendant = {
-            weight: tx.weight,
-            fee: tx.fee,
-            txid: tx.txid
-          };
-        }
-        parents.push(parentTx);
-        parents = parents.concat(this.findAllParents(parentTx, memPool));
-      }
-    });
-    return parents;
-  }
-}

backend/src/api/disk-cache.ts

@@ -1,102 +1,15 @@
 import * as fs from 'fs';
-const fsPromises = fs.promises;
-import * as cluster from 'cluster';
-import memPool from './mempool';
-import blocks from './blocks';
-import logger from '../logger';
-import config from '../config';
-import { TransactionExtended } from '../mempool.interfaces';
-import { Common } from './common';
 
 class DiskCache {
-  private static FILE_NAME = config.MEMPOOL.CACHE_DIR + '/cache.json';
-  private static FILE_NAMES = config.MEMPOOL.CACHE_DIR + '/cache{number}.json';
-  private static CHUNK_FILES = 25;
-  private isWritingCache = false;
-
+  static FILE_NAME = './cache.json';
   constructor() { }
 
-  async $saveCacheToDisk(): Promise<void> {
-    if (!cluster.isMaster) {
-      return;
-    }
-    if (this.isWritingCache) {
-      logger.debug('Saving cache already in progress. Skipping.')
-      return;
-    }
-    try {
-      logger.debug('Writing mempool and blocks data to disk cache (async)...');
-      this.isWritingCache = true;
-
-      const mempool = memPool.getMempool();
-      const mempoolArray: TransactionExtended[] = [];
-      for (const tx in mempool) {
-        mempoolArray.push(mempool[tx]);
-      }
-
-      Common.shuffleArray(mempoolArray);
-
-      const chunkSize = Math.floor(mempoolArray.length / DiskCache.CHUNK_FILES);
-
-      await fsPromises.writeFile(DiskCache.FILE_NAME, JSON.stringify({
-        blocks: blocks.getBlocks(),
-        mempool: {},
-        mempoolArray: mempoolArray.splice(0, chunkSize),
-      }), {flag: 'w'});
-      for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-        await fsPromises.writeFile(DiskCache.FILE_NAMES.replace('{number}', i.toString()), JSON.stringify({
-          mempool: {},
-          mempoolArray: mempoolArray.splice(0, chunkSize),
-        }), {flag: 'w'});
-      }
-      logger.debug('Mempool and blocks data saved to disk cache');
-      this.isWritingCache = false;
-    } catch (e) {
-      logger.warn('Error writing to cache file: ' + (e instanceof Error ? e.message : e));
-      this.isWritingCache = false;
-    }
+  saveData(dataBlob: string) {
+    fs.writeFileSync(DiskCache.FILE_NAME, dataBlob, 'utf8');
   }
 
-  loadMempoolCache() {
-    if (!fs.existsSync(DiskCache.FILE_NAME)) {
-      return;
-    }
-    try {
-      let data: any = {};
-      const cacheData = fs.readFileSync(DiskCache.FILE_NAME, 'utf8');
-      if (cacheData) {
-        logger.info('Restoring mempool and blocks data from disk cache');
-        data = JSON.parse(cacheData);
-        if (data.mempoolArray) {
-          for (const tx of data.mempoolArray) {
-            data.mempool[tx.txid] = tx;
-          }
-        }
-      }
-
-      for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-        const fileName = DiskCache.FILE_NAMES.replace('{number}', i.toString());
-        try {
-          if (fs.existsSync(fileName)) {
-            const cacheData2 = JSON.parse(fs.readFileSync(fileName, 'utf8'));
-            if (cacheData2.mempoolArray) {
-              for (const tx of cacheData2.mempoolArray) {
-                data.mempool[tx.txid] = tx;
-              }
-            } else {
-              Object.assign(data.mempool, cacheData2.mempool);
-            }
-          }
-        } catch (e) {
-          logger.debug('Error parsing ' + fileName + '. Skipping.');
-        }
-      }
-
-      memPool.setMempool(data.mempool);
-      blocks.setBlocks(data.blocks);
-    } catch (e) {
-      logger.warn('Failed to parse mempoool and blocks cache. Skipping.');
-    }
+  loadData(): string {
+    return fs.readFileSync(DiskCache.FILE_NAME, 'utf8');
   }
 }
 

backend/src/api/fee-api.ts

@@ -1,50 +1,47 @@
-import config from '../config';
-import { MempoolBlock } from '../mempool.interfaces';
-import mempool from './mempool';
-import projectedBlocks from './mempool-blocks';
+import projectedBlocks from './projected-blocks';
+import { DB } from '../database';
 
 class FeeApi {
   constructor() { }
 
-  defaultFee = config.MEMPOOL.NETWORK === 'liquid' ? 0.1 : 1;
-
   public getRecommendedFee() {
-    const pBlocks = projectedBlocks.getMempoolBlocks();
-    const mPool = mempool.getMempoolInfo();
-    const minimumFee = Math.ceil(mPool.mempoolminfee * 100000);
-
+    const pBlocks = projectedBlocks.getProjectedBlocks();
     if (!pBlocks.length) {
       return {
-        'fastestFee': this.defaultFee,
-        'halfHourFee': this.defaultFee,
-        'hourFee': this.defaultFee,
-        'minimumFee': minimumFee,
+        'fastestFee': 0,
+        'halfHourFee': 0,
+        'hourFee': 0,
       };
     }
+    let firstMedianFee = Math.ceil(pBlocks[0].medianFee);
 
-    const firstMedianFee = this.optimizeMedianFee(pBlocks[0], pBlocks[1]);
-    const secondMedianFee = pBlocks[1] ? this.optimizeMedianFee(pBlocks[1], pBlocks[2], firstMedianFee) : this.defaultFee;
-    const thirdMedianFee = pBlocks[2] ? this.optimizeMedianFee(pBlocks[2], pBlocks[3], secondMedianFee) : this.defaultFee;
+    if (pBlocks.length === 1 && pBlocks[0].blockWeight <= 2000000) {
+      firstMedianFee = 1;
+    }
+
+    const secondMedianFee = pBlocks[1] ? Math.ceil(pBlocks[1].medianFee) : firstMedianFee;
+    const thirdMedianFee = pBlocks[2] ? Math.ceil(pBlocks[2].medianFee) : secondMedianFee;
 
     return {
       'fastestFee': firstMedianFee,
       'halfHourFee': secondMedianFee,
       'hourFee': thirdMedianFee,
-      'minimumFee': minimumFee,
     };
   }
 
-  private optimizeMedianFee(pBlock: MempoolBlock, nextBlock: MempoolBlock | undefined, previousFee?: number): number {
-    const useFee = previousFee ? (pBlock.medianFee + previousFee) / 2 : pBlock.medianFee;
-    if (pBlock.blockVSize <= 500000) {
-      return this.defaultFee;
+  public async $getTransactionsForBlock(blockHeight: number): Promise<any[]> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = `SELECT feePerVsize AS fpv FROM transactions WHERE blockheight = ? ORDER BY feePerVsize ASC`;
+      const [rows] = await connection.query<any>(query, [blockHeight]);
+      connection.release();
+      return rows;
+    } catch (e) {
+      console.log('$getTransactionsForBlock() error', e);
+      return [];
     }
-    if (pBlock.blockVSize <= 950000 && !nextBlock) {
-      const multiplier = (pBlock.blockVSize - 500000) / 500000;
-      return Math.max(Math.round(useFee * multiplier), this.defaultFee);
-    }
-    return Math.ceil(useFee);
   }
+
 }
 
 export default new FeeApi();

backend/src/api/fiat-conversion.ts

@@ -1,43 +1,30 @@
-import logger from '../logger';
-import axios from 'axios';
-import { IConversionRates } from '../mempool.interfaces';
-import config from '../config';
+import * as request from 'request';
 
 class FiatConversion {
-  private conversionRates: IConversionRates = {
-    'USD': 0
+  private tickers = {
+    'BTCUSD': {
+      'USD': 4110.78
+    },
   };
-  private ratesChangedCallback: ((rates: IConversionRates) => void) | undefined;
 
   constructor() { }
 
-  public setProgressChangedCallback(fn: (rates: IConversionRates) => void) {
-    this.ratesChangedCallback = fn;
-  }
-
   public startService() {
-    logger.info('Starting currency rates service');
-    setInterval(this.updateCurrency.bind(this), 1000 * config.MEMPOOL.PRICE_FEED_UPDATE_INTERVAL);
+    setInterval(this.updateCurrency.bind(this), 1000 * 60 * 60);
     this.updateCurrency();
   }
 
-  public getConversionRates() {
-    return this.conversionRates;
+  public getTickers() {
+    return this.tickers;
   }
 
-  private async updateCurrency(): Promise<void> {
-    try {
-      const response = await axios.get('https://price.bisq.wiz.biz/getAllMarketPrices', { timeout: 10000 });
-      const usd = response.data.data.find((item: any) => item.currencyCode === 'USD');
-      this.conversionRates = {
-        'USD': usd.price,
-      };
-      if (this.ratesChangedCallback) {
-        this.ratesChangedCallback(this.conversionRates);
+  private updateCurrency() {
+    request('https://api.opennode.co/v1/rates', { json: true }, (err, res, body) => {
+      if (err) { return console.log(err); }
+      if (body && body.data) {
+        this.tickers = body.data;
       }
-    } catch (e) {
-      logger.err('Error updating fiat conversion rates: ' + (e instanceof Error ? e.message : e));
-    }
+    });
   }
 }
 

backend/src/api/liquid/elements-parser.ts

@@ -1,111 +0,0 @@
-import { IBitcoinApi } from '../bitcoin/bitcoin-api.interface';
-import bitcoinClient from '../bitcoin/bitcoin-client';
-import bitcoinSecondClient from '../bitcoin/bitcoin-second-client';
-import { Common } from '../common';
-import { DB } from '../../database';
-import logger from '../../logger';
-
-class ElementsParser {
-  private isRunning = false;
-
-  constructor() { }
-
-  public async $parse() {
-    if (this.isRunning) {
-      return;
-    }
-    try {
-      this.isRunning = true;
-      const result = await bitcoinClient.getChainTips();
-      const tip = result[0].height;
-      const latestBlock = await this.$getLatestBlockFromDatabase();
-      for (let height = latestBlock.block + 1; height <= tip; height++) {
-        const blockHash: IBitcoinApi.ChainTips = await bitcoinClient.getBlockHash(height);
-        const block: IBitcoinApi.Block = await bitcoinClient.getBlock(blockHash, 2);
-        await this.$parseBlock(block);
-        await this.$saveLatestBlockToDatabase(block.height, block.time, block.hash);
-      }
-      this.isRunning = false;
-    } catch (e) {
-      this.isRunning = false;
-      throw new Error(e instanceof Error ? e.message : 'Error');
-    }
-  }
-
-  public async $getPegDataByMonth(): Promise<any> {
-    const connection = await DB.pool.getConnection();
-    const query = `SELECT SUM(amount) AS amount, DATE_FORMAT(FROM_UNIXTIME(datetime), '%Y-%m-01') AS date FROM elements_pegs GROUP BY DATE_FORMAT(FROM_UNIXTIME(datetime), '%Y%m')`;
-    const [rows] = await connection.query<any>(query);
-    connection.release();
-    return rows;
-  }
-
-  protected async $parseBlock(block: IBitcoinApi.Block) {
-    for (const tx of block.tx) {
-      await this.$parseInputs(tx, block);
-      await this.$parseOutputs(tx, block);
-    }
-  }
-
-  protected async $parseInputs(tx: IBitcoinApi.Transaction, block: IBitcoinApi.Block) {
-    for (const [index, input] of tx.vin.entries()) {
-      if (input.is_pegin) {
-        await this.$parsePegIn(input, index, tx.txid, block);
-      }
-    }
-  }
-
-  protected async $parsePegIn(input: IBitcoinApi.Vin, vindex: number, txid: string, block: IBitcoinApi.Block) {
-    const bitcoinTx: IBitcoinApi.Transaction = await bitcoinSecondClient.getRawTransaction(input.txid, true);
-    const prevout = bitcoinTx.vout[input.vout || 0];
-    const outputAddress = prevout.scriptPubKey.address || (prevout.scriptPubKey.addresses && prevout.scriptPubKey.addresses[0]) || '';
-    await this.$savePegToDatabase(block.height, block.time, prevout.value * 100000000, txid, vindex,
-      outputAddress, bitcoinTx.txid, prevout.n, 1);
-  }
-
-  protected async $parseOutputs(tx: IBitcoinApi.Transaction, block: IBitcoinApi.Block) {
-    for (const output of tx.vout) {
-      if (output.scriptPubKey.pegout_chain) {
-        await this.$savePegToDatabase(block.height, block.time, 0 - output.value * 100000000, tx.txid, output.n,
-          (output.scriptPubKey.pegout_addresses && output.scriptPubKey.pegout_addresses[0] || ''), '', 0, 0);
-      }
-      if (!output.scriptPubKey.pegout_chain && output.scriptPubKey.type === 'nulldata'
-        && output.value && output.value > 0 && output.asset && output.asset === Common.nativeAssetId) {
-        await this.$savePegToDatabase(block.height, block.time, 0 - output.value * 100000000, tx.txid, output.n,
-          (output.scriptPubKey.pegout_addresses && output.scriptPubKey.pegout_addresses[0] || ''), '', 0, 1);
-      }
-    }
-  }
-
-  protected async $savePegToDatabase(height: number, blockTime: number, amount: number, txid: string,
-    txindex: number, bitcoinaddress: string, bitcointxid: string, bitcoinindex: number, final_tx: number): Promise<void> {
-    const connection = await DB.pool.getConnection();
-    const query = `INSERT INTO elements_pegs(
-        block, datetime, amount, txid, txindex, bitcoinaddress, bitcointxid, bitcoinindex, final_tx
-      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`;
-
-    const params: (string | number)[] = [
-      height, blockTime, amount, txid, txindex, bitcoinaddress, bitcointxid, bitcoinindex, final_tx
-    ];
-    await connection.query(query, params);
-    connection.release();
-    logger.debug(`Saved L-BTC peg from block height #${height} with TXID ${txid}.`);
-  }
-
-  protected async $getLatestBlockFromDatabase(): Promise<any> {
-    const connection = await DB.pool.getConnection();
-    const query = `SELECT block, datetime, block_hash FROM last_elements_block`;
-    const [rows] = await connection.query<any>(query);
-    connection.release();
-    return rows[0];
-  }
-
-  protected async $saveLatestBlockToDatabase(blockHeight: number, datetime: number, blockHash: string) {
-    const connection = await DB.pool.getConnection();
-    const query = `UPDATE last_elements_block SET block = ?, datetime = ?, block_hash = ?`;
-    await connection.query<any>(query, [blockHeight, datetime, blockHash]);
-    connection.release();
-  }
-}
-
-export default new ElementsParser();

backend/src/api/loading-indicators.ts

@@ -1,32 +0,0 @@
-import { ILoadingIndicators } from '../mempool.interfaces';
-
-class LoadingIndicators {
-  private loadingIndicators: ILoadingIndicators = {
-    'mempool': 0,
-  };
-  private progressChangedCallback: ((loadingIndicators: ILoadingIndicators) => void) | undefined;
-
-  constructor() { }
-
-  public setProgressChangedCallback(fn: (loadingIndicators: ILoadingIndicators) => void) {
-    this.progressChangedCallback = fn;
-  }
-
-  public setProgress(name: string, progressPercent: number) {
-    const newProgress = Math.round(progressPercent);
-    if (newProgress >= 100) {
-      delete this.loadingIndicators[name];
-    } else {
-      this.loadingIndicators[name] = newProgress;
-    }
-    if (this.progressChangedCallback) {
-      this.progressChangedCallback(this.loadingIndicators);
-    }
-  }
-
-  public getLoadingIndicators() {
-    return this.loadingIndicators;
-  }
-}
-
-export default new LoadingIndicators();

backend/src/api/memory-cache.ts

@@ -1,38 +0,0 @@
-interface ICache {
-  type: string;
-  id: string;
-  expires: Date;
-  data: any;
-}
-
-class MemoryCache {
-  private cache: ICache[] = [];
-  constructor() {
-    setInterval(this.cleanup.bind(this), 1000);
-  }
-
-  public set(type: string, id: string, data: any, secondsExpiry: number) {
-    const expiry = new Date();
-    expiry.setSeconds(expiry.getSeconds() + secondsExpiry);
-    this.cache.push({
-      type: type,
-      id: id,
-      data: data,
-      expires: expiry,
-    });
-  }
-
-  public get<T>(type: string, id: string): T | null {
-    const found = this.cache.find((cache) => cache.type === type && cache.id === id);
-    if (found) {
-      return found.data;
-    }
-    return null;
-  }
-
-  private cleanup() {
-    this.cache = this.cache.filter((cache) => cache.expires < (new Date()));
-  }
-}
-
-export default new MemoryCache();

backend/src/api/mempool-blocks.ts

@@ -1,119 +0,0 @@
-import logger from '../logger';
-import { MempoolBlock, TransactionExtended, MempoolBlockWithTransactions } from '../mempool.interfaces';
-import { Common } from './common';
-import config from '../config';
-
-class MempoolBlocks {
-  private mempoolBlocks: MempoolBlockWithTransactions[] = [];
-
-  constructor() {}
-
-  public getMempoolBlocks(): MempoolBlock[] {
-    return this.mempoolBlocks.map((block) => {
-      return {
-        blockSize: block.blockSize,
-        blockVSize: block.blockVSize,
-        nTx: block.nTx,
-        totalFees: block.totalFees,
-        medianFee: block.medianFee,
-        feeRange: block.feeRange,
-      };
-    });
-  }
-
-  public getMempoolBlocksWithTransactions(): MempoolBlockWithTransactions[] {
-    return this.mempoolBlocks;
-  }
-
-  public updateMempoolBlocks(memPool: { [txid: string]: TransactionExtended }): void {
-    const latestMempool = memPool;
-    const memPoolArray: TransactionExtended[] = [];
-    for (const i in latestMempool) {
-      if (latestMempool.hasOwnProperty(i)) {
-        memPoolArray.push(latestMempool[i]);
-      }
-    }
-    const start = new Date().getTime();
-
-    // Clear bestDescendants & ancestors
-    memPoolArray.forEach((tx) => {
-      tx.bestDescendant = null;
-      tx.ancestors = [];
-      tx.cpfpChecked = false;
-      if (!tx.effectiveFeePerVsize) {
-        tx.effectiveFeePerVsize = tx.feePerVsize;
-      }
-    });
-
-    // First sort
-    memPoolArray.sort((a, b) => b.feePerVsize - a.feePerVsize);
-
-    // Loop through and traverse all ancestors and sum up all the sizes + fees
-    // Pass down size + fee to all unconfirmed children
-    let sizes = 0;
-    memPoolArray.forEach((tx, i) => {
-      sizes += tx.weight;
-      if (sizes > 4000000 * 8) {
-        return;
-      }
-      Common.setRelativesAndGetCpfpInfo(tx, memPool);
-    });
-
-    // Final sort, by effective fee
-    memPoolArray.sort((a, b) => b.effectiveFeePerVsize - a.effectiveFeePerVsize);
-
-    const end = new Date().getTime();
-    const time = end - start;
-    logger.debug('Mempool blocks calculated in ' + time / 1000 + ' seconds');
-
-    this.mempoolBlocks = this.calculateMempoolBlocks(memPoolArray);
-  }
-
-  private calculateMempoolBlocks(transactionsSorted: TransactionExtended[]): MempoolBlockWithTransactions[] {
-    const mempoolBlocks: MempoolBlockWithTransactions[] = [];
-    let blockWeight = 0;
-    let blockSize = 0;
-    let transactions: TransactionExtended[] = [];
-    transactionsSorted.forEach((tx) => {
-      if (blockWeight + tx.weight <= config.MEMPOOL.BLOCK_WEIGHT_UNITS
-        || mempoolBlocks.length === config.MEMPOOL.MEMPOOL_BLOCKS_AMOUNT - 1) {
-        blockWeight += tx.weight;
-        blockSize += tx.size;
-        transactions.push(tx);
-      } else {
-        mempoolBlocks.push(this.dataToMempoolBlocks(transactions, blockSize, blockWeight, mempoolBlocks.length));
-        blockWeight = tx.weight;
-        blockSize = tx.size;
-        transactions = [tx];
-      }
-    });
-    if (transactions.length) {
-      mempoolBlocks.push(this.dataToMempoolBlocks(transactions, blockSize, blockWeight, mempoolBlocks.length));
-    }
-    return mempoolBlocks;
-  }
-
-  private dataToMempoolBlocks(transactions: TransactionExtended[],
-    blockSize: number, blockWeight: number, blocksIndex: number): MempoolBlockWithTransactions {
-    let rangeLength = 4;
-    if (blocksIndex === 0) {
-      rangeLength = 8;
-    }
-    if (transactions.length > 4000) {
-      rangeLength = 6;
-    } else if (transactions.length > 10000) {
-      rangeLength = 8;
-    }
-    return {
-      blockSize: blockSize,
-      blockVSize: blockWeight / 4,
-      nTx: transactions.length,
-      totalFees: transactions.reduce((acc, cur) => acc + cur.fee, 0),
-      medianFee: Common.percentile(transactions.map((tx) => tx.effectiveFeePerVsize), config.MEMPOOL.RECOMMENDED_FEE_PERCENTILE),
-      feeRange: Common.getFeesInRange(transactions, rangeLength),
-      transactionIds: transactions.map((tx) => tx.txid),
-    };
-  }
-}
-
-export default new MempoolBlocks();

backend/src/api/mempool.ts

@@ -1,71 +1,35 @@
-import config from '../config';
+const config = require('../../mempool-config.json');
 import bitcoinApi from './bitcoin/bitcoin-api-factory';
-import { TransactionExtended, VbytesPerSecond } from '../mempool.interfaces';
-import logger from '../logger';
-import { Common } from './common';
-import transactionUtils from './transaction-utils';
-import { IBitcoinApi } from './bitcoin/bitcoin-api.interface';
-import loadingIndicators from './loading-indicators';
-import bitcoinClient from './bitcoin/bitcoin-client';
-import bitcoinSecondClient from './bitcoin/bitcoin-second-client';
+import { ITransaction, IMempoolInfo, IMempool } from '../interfaces';
 
 class Mempool {
-  private static WEBSOCKET_REFRESH_RATE_MS = 10000;
-  private static LAZY_DELETE_AFTER_SECONDS = 30;
-  private inSync: boolean = false;
-  private mempoolCache: { [txId: string]: TransactionExtended } = {};
-  private mempoolInfo: IBitcoinApi.MempoolInfo = { loaded: false, size: 0, bytes: 0, usage: 0,
-                                                    maxmempool: 300000000, mempoolminfee: 0.00001000, minrelaytxfee: 0.00001000 };
-  private mempoolChangedCallback: ((newMempool: {[txId: string]: TransactionExtended; }, newTransactions: TransactionExtended[],
-    deletedTransactions: TransactionExtended[]) => void) | undefined;
+  private mempool: IMempool = {};
+  private mempoolInfo: IMempoolInfo | undefined;
+  private mempoolChangedCallback: Function | undefined;
 
   private txPerSecondArray: number[] = [];
   private txPerSecond: number = 0;
 
-  private vBytesPerSecondArray: VbytesPerSecond[] = [];
+  private vBytesPerSecondArray: any[] = [];
   private vBytesPerSecond: number = 0;
-  private mempoolProtection = 0;
-  private latestTransactions: any[] = [];
 
   constructor() {
     setInterval(this.updateTxPerSecond.bind(this), 1000);
-    setInterval(this.deleteExpiredTransactions.bind(this), 20000);
   }
 
-  public isInSync(): boolean {
-    return this.inSync;
-  }
-
-  public setOutOfSync(): void {
-    this.inSync = false;
-    loadingIndicators.setProgress('mempool', 99);
-  }
-
-  public getLatestTransactions() {
-    return this.latestTransactions;
-  }
-
-  public setMempoolChangedCallback(fn: (newMempool: { [txId: string]: TransactionExtended; },
-    newTransactions: TransactionExtended[], deletedTransactions: TransactionExtended[]) => void) {
+  public setMempoolChangedCallback(fn: Function) {
     this.mempoolChangedCallback = fn;
   }
 
-  public getMempool(): { [txid: string]: TransactionExtended } {
-    return this.mempoolCache;
+  public getMempool(): { [txid: string]: ITransaction } {
+    return this.mempool;
   }
 
-  public setMempool(mempoolData: { [txId: string]: TransactionExtended }) {
-    this.mempoolCache = mempoolData;
-    if (this.mempoolChangedCallback) {
-      this.mempoolChangedCallback(this.mempoolCache, [], []);
-    }
+  public setMempool(mempoolData: any) {
+    this.mempool = mempoolData;
   }
 
-  public async $updateMemPoolInfo() {
-    this.mempoolInfo = await this.$getMempoolInfo();
-  }
-
-  public getMempoolInfo(): IBitcoinApi.MempoolInfo {
+  public getMempoolInfo(): IMempoolInfo | undefined {
     return this.mempoolInfo;
   }
 
@@ -77,150 +41,128 @@ class Mempool {
     return this.vBytesPerSecond;
   }
 
-  public getFirstSeenForTransactions(txIds: string[]): number[] {
-    const txTimes: number[] = [];
-    txIds.forEach((txId: string) => {
-      const tx = this.mempoolCache[txId];
-      if (tx && tx.firstSeen) {
-        txTimes.push(tx.firstSeen);
-      } else {
-        txTimes.push(0);
-      }
-    });
-    return txTimes;
+  public async updateMemPoolInfo() {
+    try {
+      this.mempoolInfo = await bitcoinApi.getMempoolInfo();
+    } catch (err) {
+      console.log('Error getMempoolInfo', err);
+    }
   }
 
-  public async $updateMempool() {
-    logger.debug('Updating mempool');
+  public async getRawTransaction(txId: string, isCoinbase = false): Promise<ITransaction | false> {
+    try {
+      const transaction = await bitcoinApi.getRawTransaction(txId);
+
+      let totalOut = 0;
+      transaction.vout.forEach((output) => totalOut += output.value);
+
+      if (config.BACKEND_API === 'electrs') {
+        transaction.feePerWeightUnit = (transaction.fee * 100000000) / transaction.weight || 0;
+        transaction.feePerVsize = (transaction.fee * 100000000) / (transaction.vsize) || 0;
+        transaction.totalOut = totalOut / 100000000;
+      } else {
+        let totalIn = 0;
+        if (!isCoinbase) {
+          for (let i = 0; i < transaction.vin.length; i++) {
+            try {
+              const result = await bitcoinApi.getRawTransaction(transaction.vin[i].txid);
+              transaction.vin[i]['value'] = result.vout[transaction.vin[i].vout].value;
+              totalIn += result.vout[transaction.vin[i].vout].value;
+            } catch (err) {
+              console.log('Locating historical tx error');
+            }
+          }
+        }
+
+        if (totalIn > totalOut) {
+          transaction.fee = parseFloat((totalIn - totalOut).toFixed(8));
+          transaction.feePerWeightUnit = (transaction.fee * 100000000) / (transaction.vsize * 4) || 0;
+          transaction.feePerVsize = (transaction.fee * 100000000) / (transaction.vsize) || 0;
+        } else if (!isCoinbase) {
+          transaction.fee = 0;
+          transaction.feePerVsize = 0;
+          transaction.feePerWeightUnit = 0;
+          console.log('Minus fee error!');
+        }
+        transaction.totalOut = totalOut;
+      }
+      return transaction;
+    } catch (e) {
+      console.log(txId + ' not found');
+      return false;
+    }
+  }
+
+  public async updateMempool() {
+    console.log('Updating mempool');
     const start = new Date().getTime();
     let hasChange: boolean = false;
-    const currentMempoolSize = Object.keys(this.mempoolCache).length;
     let txCount = 0;
-    const transactions = await bitcoinApi.$getRawMempool();
-    const diff = transactions.length - currentMempoolSize;
-    const newTransactions: TransactionExtended[] = [];
-
-    if (!this.inSync) {
-      loadingIndicators.setProgress('mempool', Object.keys(this.mempoolCache).length / transactions.length * 100);
-    }
-
-    for (const txid of transactions) {
-      if (!this.mempoolCache[txid]) {
-        try {
-          const transaction = await transactionUtils.$getTransactionExtended(txid);
-          this.mempoolCache[txid] = transaction;
-          txCount++;
-          if (this.inSync) {
+    try {
+      const transactions = await bitcoinApi.getRawMempool();
+      const diff = transactions.length - Object.keys(this.mempool).length;
+      for (const tx of transactions) {
+        if (!this.mempool[tx]) {
+          const transaction = await this.getRawTransaction(tx);
+          if (transaction) {
+            this.mempool[tx] = transaction;
+            txCount++;
             this.txPerSecondArray.push(new Date().getTime());
             this.vBytesPerSecondArray.push({
               unixTime: new Date().getTime(),
               vSize: transaction.vsize,
             });
-          }
-          hasChange = true;
-          if (diff > 0) {
-            logger.debug('Fetched transaction ' + txCount + ' / ' + diff);
+            hasChange = true;
+            if (diff > 0) {
+              console.log('Calculated fee for transaction ' + txCount + ' / ' + diff);
+            } else {
+              console.log('Calculated fee for transaction ' + txCount);
+            }
           } else {
-            logger.debug('Fetched transaction ' + txCount);
+            console.log('Error finding transaction in mempool.');
           }
-          newTransactions.push(transaction);
-        } catch (e) {
-          logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
+        }
+
+        if ((new Date().getTime()) - start > config.MEMPOOL_REFRESH_RATE_MS * 10) {
+          break;
         }
       }
 
-      if ((new Date().getTime()) - start > Mempool.WEBSOCKET_REFRESH_RATE_MS) {
-        break;
-      }
-    }
-
-    // Prevent mempool from clear on bitcoind restart by delaying the deletion
-    if (this.mempoolProtection === 0
-      && currentMempoolSize > 20000
-      && transactions.length / currentMempoolSize <= 0.80
-    ) {
-      this.mempoolProtection = 1;
-      this.inSync = false;
-      logger.warn(`Mempool clear protection triggered because transactions.length: ${transactions.length} and currentMempoolSize: ${currentMempoolSize}.`);
-      setTimeout(() => {
-        this.mempoolProtection = 2;
-        logger.warn('Mempool clear protection resumed.');
-      }, 1000 * 60 * config.MEMPOOL.CLEAR_PROTECTION_MINUTES);
-    }
-
-    const deletedTransactions: TransactionExtended[] = [];
-
-    if (this.mempoolProtection !== 1) {
-      this.mempoolProtection = 0;
-      // Index object for faster search
-      const transactionsObject = {};
-      transactions.forEach((txId) => transactionsObject[txId] = true);
-
-      // Flag transactions for lazy deletion
-      for (const tx in this.mempoolCache) {
-        if (!transactionsObject[tx] && !this.mempoolCache[tx].deleteAfter) {
-          deletedTransactions.push(this.mempoolCache[tx]);
-          this.mempoolCache[tx].deleteAfter = new Date().getTime() + Mempool.LAZY_DELETE_AFTER_SECONDS * 1000;
+      const newMempool: IMempool = {};
+      transactions.forEach((tx) => {
+        if (this.mempool[tx]) {
+          newMempool[tx] = this.mempool[tx];
+        } else {
+          hasChange = true;
         }
+      });
+
+      this.mempool = newMempool;
+
+      if (hasChange && this.mempoolChangedCallback) {
+        this.mempoolChangedCallback(this.mempool);
       }
+
+      const end = new Date().getTime();
+      const time = end - start;
+      console.log('Mempool updated in ' + time / 1000 + ' seconds');
+    } catch (err) {
+      console.log('getRawMempool error.', err);
     }
-
-    const newTransactionsStripped = newTransactions.map((tx) => Common.stripTransaction(tx));
-    this.latestTransactions = newTransactionsStripped.concat(this.latestTransactions).slice(0, 6);
-
-    if (!this.inSync && transactions.length === Object.keys(this.mempoolCache).length) {
-      this.inSync = true;
-      logger.notice('The mempool is now in sync!');
-      loadingIndicators.setProgress('mempool', 100);
-    }
-
-    if (this.mempoolChangedCallback && (hasChange || deletedTransactions.length)) {
-      this.mempoolChangedCallback(this.mempoolCache, newTransactions, deletedTransactions);
-    }
-
-    const end = new Date().getTime();
-    const time = end - start;
-    logger.debug(`New mempool size: ${Object.keys(this.mempoolCache).length} Change: ${diff}`);
-    logger.debug('Mempool updated in ' + time / 1000 + ' seconds');
   }
 
   private updateTxPerSecond() {
-    const nowMinusTimeSpan = new Date().getTime() - (1000 * config.STATISTICS.TX_PER_SECOND_SAMPLE_PERIOD);
+    const nowMinusTimeSpan = new Date().getTime() - (1000 * config.TX_PER_SECOND_SPAN_SECONDS);
     this.txPerSecondArray = this.txPerSecondArray.filter((unixTime) => unixTime > nowMinusTimeSpan);
-    this.txPerSecond = this.txPerSecondArray.length / config.STATISTICS.TX_PER_SECOND_SAMPLE_PERIOD || 0;
+    this.txPerSecond = this.txPerSecondArray.length / config.TX_PER_SECOND_SPAN_SECONDS || 0;
 
     this.vBytesPerSecondArray = this.vBytesPerSecondArray.filter((data) => data.unixTime > nowMinusTimeSpan);
     if (this.vBytesPerSecondArray.length) {
       this.vBytesPerSecond = Math.round(
-        this.vBytesPerSecondArray.map((data) => data.vSize).reduce((a, b) => a + b) / config.STATISTICS.TX_PER_SECOND_SAMPLE_PERIOD
+        this.vBytesPerSecondArray.map((data) => data.vSize).reduce((a, b) => a + b) / config.TX_PER_SECOND_SPAN_SECONDS
       );
     }
   }
-
-  private deleteExpiredTransactions() {
-    const now = new Date().getTime();
-    for (const tx in this.mempoolCache) {
-      const lazyDeleteAt = this.mempoolCache[tx].deleteAfter;
-      if (lazyDeleteAt && lazyDeleteAt < now) {
-        delete this.mempoolCache[tx];
-      }
-    }
-  }
-
-  private $getMempoolInfo() {
-    if (config.MEMPOOL.USE_SECOND_NODE_FOR_MINFEE) {
-      return Promise.all([
-        bitcoinClient.getMempoolInfo(),
-        bitcoinSecondClient.getMempoolInfo()
-      ]).then(([mempoolInfo, secondMempoolInfo]) => {
-        mempoolInfo.maxmempool = secondMempoolInfo.maxmempool;
-        mempoolInfo.mempoolminfee = secondMempoolInfo.mempoolminfee;
-        mempoolInfo.minrelaytxfee = secondMempoolInfo.minrelaytxfee;
-        return mempoolInfo;
-      });
-    }
-    return bitcoinClient.getMempoolInfo();
-  }
 }
 
 export default new Mempool();

backend/src/api/projected-blocks.ts

@@ -0,0 +1,101 @@
+const config = require('../../mempool-config.json');
+import { ITransaction, IProjectedBlock, IMempool, IProjectedBlockInternal } from '../interfaces';
+
+class ProjectedBlocks {
+  private transactionsSorted: ITransaction[] = [];
+
+  constructor() {}
+
+  public getProjectedBlockFeesForBlock(index: number) {
+    const projectedBlock = this.getProjectedBlocksInternal()[index];
+
+    if (!projectedBlock) {
+      throw new Error('No projected block for that index');
+    }
+
+    return projectedBlock.txFeePerVsizes.map((fpv) => {
+      return {'fpv': fpv};
+    });
+  }
+
+  public updateProjectedBlocks(memPool: IMempool): void {
+    const latestMempool = memPool;
+    const memPoolArray: ITransaction[] = [];
+    for (const i in latestMempool) {
+      if (latestMempool.hasOwnProperty(i)) {
+        memPoolArray.push(latestMempool[i]);
+      }
+    }
+    memPoolArray.sort((a, b) => b.feePerWeightUnit - a.feePerWeightUnit);
+    this.transactionsSorted = memPoolArray.filter((tx) => tx.feePerWeightUnit);
+  }
+
+  public getProjectedBlocks(txId?: string, numberOfBlocks: number = config.DEFAULT_PROJECTED_BLOCKS_AMOUNT): IProjectedBlock[] {
+    return this.getProjectedBlocksInternal(numberOfBlocks).map((projectedBlock) => {
+      return {
+        blockSize: projectedBlock.blockSize,
+        blockWeight: projectedBlock.blockWeight,
+        nTx: projectedBlock.nTx,
+        minFee: projectedBlock.minFee,
+        maxFee: projectedBlock.maxFee,
+        minWeightFee: projectedBlock.minWeightFee,
+        maxWeightFee: projectedBlock.maxWeightFee,
+        medianFee: projectedBlock.medianFee,
+        fees: projectedBlock.fees,
+        hasMytx: txId ? projectedBlock.txIds.some((tx) => tx === txId) : false
+      };
+    });
+  }
+
+  private getProjectedBlocksInternal(numberOfBlocks: number = config.DEFAULT_PROJECTED_BLOCKS_AMOUNT): IProjectedBlockInternal[] {
+    const projectedBlocks: IProjectedBlockInternal[] = [];
+    let blockWeight = 0;
+    let blockSize = 0;
+    let transactions: ITransaction[] = [];
+    this.transactionsSorted.forEach((tx) => {
+      if (blockWeight + tx.vsize * 4 < 4000000 || projectedBlocks.length === numberOfBlocks) {
+        blockWeight += tx.weight || tx.vsize * 4;
+        blockSize += tx.size;
+        transactions.push(tx);
+      } else {
+        projectedBlocks.push(this.dataToProjectedBlock(transactions, blockSize, blockWeight));
+        blockWeight = 0;
+        blockSize = 0;
+        transactions = [];
+      }
+    });
+    if (transactions.length) {
+      projectedBlocks.push(this.dataToProjectedBlock(transactions, blockSize, blockWeight));
+    }
+    return projectedBlocks;
+  }
+
+  private dataToProjectedBlock(transactions: ITransaction[], blockSize: number, blockWeight: number): IProjectedBlockInternal {
+    return {
+      blockSize: blockSize,
+      blockWeight: blockWeight,
+      nTx: transactions.length,
+      minFee: transactions[transactions.length - 1].feePerVsize,
+      maxFee: transactions[0].feePerVsize,
+      minWeightFee: transactions[transactions.length - 1].feePerWeightUnit,
+      maxWeightFee: transactions[0].feePerWeightUnit,
+      medianFee: this.median(transactions.map((tx) => tx.feePerVsize)),
+      txIds: transactions.map((tx) => tx.txid),
+      txFeePerVsizes: transactions.map((tx) => tx.feePerVsize).reverse(),
+      fees: transactions.map((tx) => tx.fee).reduce((acc, currValue) => acc + currValue),
+    };
+  }
+
+  private median(numbers: number[]) {
+    let medianNr = 0;
+    const numsLen = numbers.length;
+    if (numsLen % 2 === 0) {
+        medianNr = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;
+    } else {
+        medianNr = numbers[(numsLen - 1) / 2];
+    }
+    return medianNr;
+  }
+}
+
+export default new ProjectedBlocks();

backend/src/api/statistics.ts

@@ -1,27 +1,20 @@
 import memPool from './mempool';
 import { DB } from '../database';
-import logger from '../logger';
 
-import { Statistic, TransactionExtended, OptimizedStatistic } from '../mempool.interfaces';
-import config from '../config';
+import { ITransaction, IMempoolStats } from '../interfaces';
 
 class Statistics {
   protected intervalTimer: NodeJS.Timer | undefined;
-  protected newStatisticsEntryCallback: ((stats: OptimizedStatistic) => void) | undefined;
-  protected queryTimeout = 120000;
-  protected cache: { [date: string]: OptimizedStatistic[] } = {
-    '24h': [], '1w': [], '1m': [], '3m': [], '6m': [], '1y': [], '2y': [], '3y': []
-  };
+  protected newStatisticsEntryCallback: Function | undefined;
 
-  public setNewStatisticsEntryCallback(fn: (stats: OptimizedStatistic) => void) {
+  public setNewStatisticsEntryCallback(fn: Function) {
     this.newStatisticsEntryCallback = fn;
   }
 
-  constructor() { }
+  constructor() {
+  }
 
   public startStatistics(): void {
-    logger.info('Starting statistics service');
-
     const now = new Date();
     const nextInterval = new Date(now.getFullYear(), now.getMonth(), now.getDate(), now.getHours(),
       Math.floor(now.getMinutes() / 1) * 1 + 1, 0, 0);
@@ -29,71 +22,60 @@ class Statistics {
 
     setTimeout(() => {
       this.runStatistics();
-      this.intervalTimer = setInterval(() => {
-        this.runStatistics();
-      }, 1 * 60 * 1000);
+      this.intervalTimer = setInterval(() => { this.runStatistics(); }, 1 * 60 * 1000);
     }, difference);
-
-    this.createCache();
-    setInterval(this.createCache.bind(this), 600000);
-  }
-
-  public getCache() {
-    return this.cache;
-  }
-
-  private async createCache() {
-    this.cache['24h'] = await this.$list24H();
-    this.cache['1w'] = await this.$list1W();
-    this.cache['1m'] = await this.$list1M();
-    this.cache['3m'] = await this.$list3M();
-    this.cache['6m'] = await this.$list6M();
-    this.cache['1y'] = await this.$list1Y();
-    this.cache['2y'] = await this.$list2Y();
-    this.cache['3y'] = await this.$list3Y();
-    logger.debug('Statistics cache created');
   }
 
   private async runStatistics(): Promise<void> {
-    if (!memPool.isInSync()) {
-      return;
-    }
     const currentMempool = memPool.getMempool();
     const txPerSecond = memPool.getTxPerSecond();
     const vBytesPerSecond = memPool.getVBytesPerSecond();
 
-    logger.debug('Running statistics');
+    if (txPerSecond === 0) {
+      return;
+    }
 
-    let memPoolArray: TransactionExtended[] = [];
+    console.log('Running statistics');
+
+    let memPoolArray: ITransaction[] = [];
     for (const i in currentMempool) {
       if (currentMempool.hasOwnProperty(i)) {
         memPoolArray.push(currentMempool[i]);
       }
     }
     // Remove 0 and undefined
-    memPoolArray = memPoolArray.filter((tx) => tx.effectiveFeePerVsize);
+    memPoolArray = memPoolArray.filter((tx) => tx.feePerWeightUnit);
 
     if (!memPoolArray.length) {
       return;
     }
 
-    memPoolArray.sort((a, b) => a.effectiveFeePerVsize - b.effectiveFeePerVsize);
+    memPoolArray.sort((a, b) => a.feePerWeightUnit - b.feePerWeightUnit);
     const totalWeight = memPoolArray.map((tx) => tx.vsize).reduce((acc, curr) => acc + curr) * 4;
     const totalFee = memPoolArray.map((tx) => tx.fee).reduce((acc, curr) => acc + curr);
 
     const logFees = [1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 175, 200,
       250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000];
 
+    const weightUnitFees: { [feePerWU: number]: number } = {};
     const weightVsizeFees: { [feePerWU: number]: number } = {};
-    const lastItem = logFees.length - 1;
 
     memPoolArray.forEach((transaction) => {
       for (let i = 0; i < logFees.length; i++) {
-        if (
-          (config.MEMPOOL.NETWORK === 'liquid' && (i === lastItem || transaction.effectiveFeePerVsize * 10 < logFees[i + 1]))
-          ||
-          (config.MEMPOOL.NETWORK !== 'liquid' && (i === lastItem || transaction.effectiveFeePerVsize < logFees[i + 1]))
-        ) {
+        if ((logFees[i] === 2000 && transaction.feePerWeightUnit >= 2000) || transaction.feePerWeightUnit <= logFees[i]) {
+          if (weightUnitFees[logFees[i]]) {
+            weightUnitFees[logFees[i]] += transaction.vsize * 4;
+          } else {
+            weightUnitFees[logFees[i]] = transaction.vsize * 4;
+          }
+          break;
+        }
+      }
+    });
+
+    memPoolArray.forEach((transaction) => {
+      for (let i = 0; i < logFees.length; i++) {
+        if ((logFees[i] === 2000 && transaction.feePerVsize >= 2000) || transaction.feePerVsize <= logFees[i]) {
           if (weightVsizeFees[logFees[i]]) {
             weightVsizeFees[logFees[i]] += transaction.vsize;
           } else {
@@ -111,7 +93,10 @@ class Statistics {
       vbytes_per_second: Math.round(vBytesPerSecond),
       mempool_byte_weight: totalWeight,
       total_fee: totalFee,
-      fee_data: '',
+      fee_data: JSON.stringify({
+        'wu': weightUnitFees,
+        'vsize': weightVsizeFees
+      }),
       vsize_1: weightVsizeFees['1'] || 0,
       vsize_2: weightVsizeFees['2'] || 0,
       vsize_3: weightVsizeFees['3'] || 0,
@@ -154,13 +139,11 @@ class Statistics {
 
     if (this.newStatisticsEntryCallback && insertId) {
       const newStats = await this.$get(insertId);
-      if (newStats) {
-        this.newStatisticsEntryCallback(newStats);
-      }
+      this.newStatisticsEntryCallback(newStats);
     }
   }
 
-  private async $create(statistics: Statistic): Promise<number | undefined> {
+  private async $create(statistics: IMempoolStats): Promise<number | undefined> {
     try {
       const connection = await DB.pool.getConnection();
       const query = `INSERT INTO statistics(
@@ -263,239 +246,144 @@ class Statistics {
       connection.release();
       return result.insertId;
     } catch (e) {
-      logger.err('$create() error' + (e instanceof Error ? e.message : e));
+      console.log('$create() error', e);
     }
   }
 
-  private getQueryForDays(div: number) {
+  private getQueryForDays(days: number, groupBy: number) {
+
     return `SELECT id, added, unconfirmed_transactions,
-      tx_per_second,
-      vbytes_per_second,
-      vsize_1,
-      vsize_2,
-      vsize_3,
-      vsize_4,
-      vsize_5,
-      vsize_6,
-      vsize_8,
-      vsize_10,
-      vsize_12,
-      vsize_15,
-      vsize_20,
-      vsize_30,
-      vsize_40,
-      vsize_50,
-      vsize_60,
-      vsize_70,
-      vsize_80,
-      vsize_90,
-      vsize_100,
-      vsize_125,
-      vsize_150,
-      vsize_175,
-      vsize_200,
-      vsize_250,
-      vsize_300,
-      vsize_350,
-      vsize_400,
-      vsize_500,
-      vsize_600,
-      vsize_700,
-      vsize_800,
-      vsize_900,
-      vsize_1000,
-      vsize_1200,
-      vsize_1400,
-      vsize_1600,
-      vsize_1800,
-      vsize_2000 FROM statistics GROUP BY UNIX_TIMESTAMP(added) DIV ${div} ORDER BY id DESC LIMIT 480`;
+            AVG(tx_per_second) AS tx_per_second,
+            AVG(vbytes_per_second) AS vbytes_per_second,
+            AVG(vsize_1) AS vsize_1,
+            AVG(vsize_2) AS vsize_2,
+            AVG(vsize_3) AS vsize_3,
+            AVG(vsize_4) AS vsize_4,
+            AVG(vsize_5) AS vsize_5,
+            AVG(vsize_6) AS vsize_6,
+            AVG(vsize_8) AS vsize_8,
+            AVG(vsize_10) AS vsize_10,
+            AVG(vsize_12) AS vsize_12,
+            AVG(vsize_15) AS vsize_15,
+            AVG(vsize_20) AS vsize_20,
+            AVG(vsize_30) AS vsize_30,
+            AVG(vsize_40) AS vsize_40,
+            AVG(vsize_50) AS vsize_50,
+            AVG(vsize_60) AS vsize_60,
+            AVG(vsize_70) AS vsize_70,
+            AVG(vsize_80) AS vsize_80,
+            AVG(vsize_90) AS vsize_90,
+            AVG(vsize_100) AS vsize_100,
+            AVG(vsize_125) AS vsize_125,
+            AVG(vsize_150) AS vsize_150,
+            AVG(vsize_175) AS vsize_175,
+            AVG(vsize_200) AS vsize_200,
+            AVG(vsize_250) AS vsize_250,
+            AVG(vsize_300) AS vsize_300,
+            AVG(vsize_350) AS vsize_350,
+            AVG(vsize_400) AS vsize_400,
+            AVG(vsize_500) AS vsize_500,
+            AVG(vsize_600) AS vsize_600,
+            AVG(vsize_700) AS vsize_700,
+            AVG(vsize_800) AS vsize_800,
+            AVG(vsize_900) AS vsize_900,
+            AVG(vsize_1000) AS vsize_1000,
+            AVG(vsize_1200) AS vsize_1200,
+            AVG(vsize_1400) AS vsize_1400,
+            AVG(vsize_1600) AS vsize_1600,
+            AVG(vsize_1800) AS vsize_1800,
+            AVG(vsize_2000) AS vsize_2000 FROM statistics GROUP BY UNIX_TIMESTAMP(added) DIV ${groupBy} ORDER BY id DESC LIMIT ${days}`;
   }
 
-  public async $get(id: number): Promise<OptimizedStatistic | undefined> {
+  public async $get(id: number): Promise<IMempoolStats | undefined> {
     try {
       const connection = await DB.pool.getConnection();
       const query = `SELECT * FROM statistics WHERE id = ?`;
       const [rows] = await connection.query<any>(query, [id]);
       connection.release();
-      if (rows[0]) {
-        return this.mapStatisticToOptimizedStatistic([rows[0]])[0];
-      }
+      return rows[0];
     } catch (e) {
-      logger.err('$list2H() error' + (e instanceof Error ? e.message : e));
+      console.log('$list2H() error', e);
     }
   }
 
-  public async $list2H(): Promise<OptimizedStatistic[]> {
+  public async $list2H(): Promise<IMempoolStats[]> {
     try {
       const connection = await DB.pool.getConnection();
       const query = `SELECT * FROM statistics ORDER BY id DESC LIMIT 120`;
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
+      const [rows] = await connection.query<any>(query);
       connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
+      return rows;
     } catch (e) {
-      logger.err('$list2H() error' + (e instanceof Error ? e.message : e));
+      console.log('$list2H() error', e);
       return [];
     }
   }
 
-  public async $list24H(): Promise<OptimizedStatistic[]> {
+  public async $list24H(): Promise<IMempoolStats[]> {
     try {
       const connection = await DB.pool.getConnection();
-      const query = this.getQueryForDays(180);
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
+      const query = this.getQueryForDays(120, 720);
+      const [rows] = await connection.query<any>(query);
       connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
+      return rows;
     } catch (e) {
-      logger.err('$list24h() error' + (e instanceof Error ? e.message : e));
       return [];
     }
   }
 
-  public async $list1W(): Promise<OptimizedStatistic[]> {
+  public async $list1W(): Promise<IMempoolStats[]> {
     try {
       const connection = await DB.pool.getConnection();
-      const query = this.getQueryForDays(1260);
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
+      const query = this.getQueryForDays(120, 5040);
+      const [rows] = await connection.query<any>(query);
       connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
+      return rows;
     } catch (e) {
-      logger.err('$list1W() error' + (e instanceof Error ? e.message : e));
+      console.log('$list1W() error', e);
       return [];
     }
   }
 
-  public async $list1M(): Promise<OptimizedStatistic[]> {
+  public async $list1M(): Promise<IMempoolStats[]> {
     try {
       const connection = await DB.pool.getConnection();
-      const query = this.getQueryForDays(5040);
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
+      const query = this.getQueryForDays(120, 20160);
+      const [rows] = await connection.query<any>(query);
       connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
+      return rows;
     } catch (e) {
-      logger.err('$list1M() error' + (e instanceof Error ? e.message : e));
+      console.log('$list1M() error', e);
       return [];
     }
   }
 
-  public async $list3M(): Promise<OptimizedStatistic[]> {
+  public async $list3M(): Promise<IMempoolStats[]> {
     try {
       const connection = await DB.pool.getConnection();
-      const query = this.getQueryForDays(15120);
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
+      const query = this.getQueryForDays(120, 60480);
+      const [rows] = await connection.query<any>(query);
       connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
+      return rows;
     } catch (e) {
-      logger.err('$list3M() error' + (e instanceof Error ? e.message : e));
+      console.log('$list3M() error', e);
       return [];
     }
   }
 
-  public async $list6M(): Promise<OptimizedStatistic[]> {
+  public async $list6M(): Promise<IMempoolStats[]> {
     try {
       const connection = await DB.pool.getConnection();
-      const query = this.getQueryForDays(30240);
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
+      const query = this.getQueryForDays(120, 120960);
+      const [rows] = await connection.query<any>(query);
       connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
+      return rows;
     } catch (e) {
-      logger.err('$list6M() error' + (e instanceof Error ? e.message : e));
+      console.log('$list6M() error', e);
       return [];
     }
   }
 
-  public async $list1Y(): Promise<OptimizedStatistic[]> {
-    try {
-      const connection = await DB.pool.getConnection();
-      const query = this.getQueryForDays(60480);
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
-      connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
-    } catch (e) {
-      logger.err('$list1Y() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list2Y(): Promise<OptimizedStatistic[]> {
-    try {
-      const connection = await DB.pool.getConnection();
-      const query = this.getQueryForDays(120960);
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
-      connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
-    } catch (e) {
-      logger.err('$list2Y() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list3Y(): Promise<OptimizedStatistic[]> {
-    try {
-      const connection = await DB.pool.getConnection();
-      const query = this.getQueryForDays(181440);
-      const [rows] = await connection.query<any>({ sql: query, timeout: this.queryTimeout });
-      connection.release();
-      return this.mapStatisticToOptimizedStatistic(rows);
-    } catch (e) {
-      logger.err('$list3Y() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  private mapStatisticToOptimizedStatistic(statistic: Statistic[]): OptimizedStatistic[] {
-    return statistic.map((s) => {
-      return {
-        id: s.id || 0,
-        added: s.added,
-        unconfirmed_transactions: s.unconfirmed_transactions,
-        tx_per_second: s.tx_per_second,
-        vbytes_per_second: s.vbytes_per_second,
-        mempool_byte_weight: s.mempool_byte_weight,
-        total_fee: s.total_fee,
-        vsizes: [
-          s.vsize_1,
-          s.vsize_2,
-          s.vsize_3,
-          s.vsize_4,
-          s.vsize_5,
-          s.vsize_6,
-          s.vsize_8,
-          s.vsize_10,
-          s.vsize_12,
-          s.vsize_15,
-          s.vsize_20,
-          s.vsize_30,
-          s.vsize_40,
-          s.vsize_50,
-          s.vsize_60,
-          s.vsize_70,
-          s.vsize_80,
-          s.vsize_90,
-          s.vsize_100,
-          s.vsize_125,
-          s.vsize_150,
-          s.vsize_175,
-          s.vsize_200,
-          s.vsize_250,
-          s.vsize_300,
-          s.vsize_350,
-          s.vsize_400,
-          s.vsize_500,
-          s.vsize_600,
-          s.vsize_700,
-          s.vsize_800,
-          s.vsize_900,
-          s.vsize_1000,
-          s.vsize_1200,
-          s.vsize_1400,
-          s.vsize_1600,
-          s.vsize_1800,
-          s.vsize_2000,
-        ]
-      };
-    });
-  }
-
 }
 
 export default new Statistics();

backend/src/api/transaction-utils.ts

@@ -1,47 +0,0 @@
-import bitcoinApi from './bitcoin/bitcoin-api-factory';
-import { TransactionExtended, TransactionMinerInfo } from '../mempool.interfaces';
-import { IEsploraApi } from './bitcoin/esplora-api.interface';
-import config from '../config';
-
-class TransactionUtils {
-  constructor() { }
-
-  public stripCoinbaseTransaction(tx: TransactionExtended): TransactionMinerInfo {
-    return {
-      vin: [{
-        scriptsig: tx.vin[0].scriptsig || tx.vin[0]['coinbase']
-      }],
-      vout: tx.vout
-        .map((vout) => ({
-          scriptpubkey_address: vout.scriptpubkey_address,
-          value: vout.value
-        }))
-        .filter((vout) => vout.value)
-    };
-  }
-
-  public async $getTransactionExtended(txId: string, addPrevouts = false): Promise<TransactionExtended> {
-    const transaction: IEsploraApi.Transaction = await bitcoinApi.$getRawTransaction(txId, false, addPrevouts);
-    return this.extendTransaction(transaction);
-  }
-
-  private extendTransaction(transaction: IEsploraApi.Transaction): TransactionExtended {
-    // @ts-ignore
-    if (transaction.vsize) {
-      // @ts-ignore
-      return transaction;
-    }
-    const feePerVbytes = Math.max(config.MEMPOOL.NETWORK === 'liquid' ? 0.1 : 1, (transaction.fee || 0) / (transaction.weight / 4));
-    const transactionExtended: TransactionExtended = Object.assign({
-      vsize: Math.round(transaction.weight / 4),
-      feePerVsize: feePerVbytes,
-      effectiveFeePerVsize: feePerVbytes,
-    }, transaction);
-    if (!transaction.status.confirmed) {
-      transactionExtended.firstSeen = Math.round((new Date().getTime() / 1000));
-    }
-    return transactionExtended;
-  }
-}
-
-export default new TransactionUtils();

backend/src/api/websocket-handler.ts

@@ -1,479 +0,0 @@
-import logger from '../logger';
-import * as WebSocket from 'ws';
-import { BlockExtended, TransactionExtended, WebsocketResponse, MempoolBlock,
-  OptimizedStatistic, ILoadingIndicators, IConversionRates } from '../mempool.interfaces';
-import blocks from './blocks';
-import memPool from './mempool';
-import backendInfo from './backend-info';
-import mempoolBlocks from './mempool-blocks';
-import fiatConversion from './fiat-conversion';
-import { Common } from './common';
-import loadingIndicators from './loading-indicators';
-import config from '../config';
-import transactionUtils from './transaction-utils';
-
-class WebsocketHandler {
-  private wss: WebSocket.Server | undefined;
-  private extraInitProperties = {};
-
-  constructor() { }
-
-  setWebsocketServer(wss: WebSocket.Server) {
-    this.wss = wss;
-  }
-
-  setExtraInitProperties(property: string, value: any) {
-    this.extraInitProperties[property] = value;
-  }
-
-  setupConnectionHandling() {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.on('connection', (client: WebSocket) => {
-      client.on('error', logger.info);
-      client.on('message', async (message: string) => {
-        try {
-          const parsedMessage: WebsocketResponse = JSON.parse(message);
-          const response = {};
-
-          if (parsedMessage.action === 'want') {
-            client['want-blocks'] = parsedMessage.data.indexOf('blocks') > -1;
-            client['want-mempool-blocks'] = parsedMessage.data.indexOf('mempool-blocks') > -1;
-            client['want-live-2h-chart'] = parsedMessage.data.indexOf('live-2h-chart') > -1;
-            client['want-stats'] = parsedMessage.data.indexOf('stats') > -1;
-          }
-
-          if (parsedMessage && parsedMessage['track-tx']) {
-            if (/^[a-fA-F0-9]{64}$/.test(parsedMessage['track-tx'])) {
-              client['track-tx'] = parsedMessage['track-tx'];
-              // Client is telling the transaction wasn't found but it might have appeared before we had the time to start watching for it
-              if (parsedMessage['watch-mempool']) {
-                const tx = memPool.getMempool()[client['track-tx']];
-                if (tx) {
-                  if (config.MEMPOOL.BACKEND === 'esplora') {
-                    response['tx'] = tx;
-                  } else {
-                    // tx.prevouts is missing from transactions when in bitcoind mode
-                    try {
-                      const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true);
-                      response['tx'] = fullTx;
-                    } catch (e) {
-                      logger.debug('Error finding transaction: ' + (e instanceof Error ? e.message : e));
-                    }
-                  }
-                } else {
-                  try {
-                    const fullTx = await transactionUtils.$getTransactionExtended(client['track-tx'], true);
-                    response['tx'] = fullTx;
-                  } catch (e) {
-                    logger.debug('Error finding transaction. ' + (e instanceof Error ? e.message : e));
-                    client['track-mempool-tx'] = parsedMessage['track-tx'];
-                  }
-                }
-              }
-            } else {
-              client['track-tx'] = null;
-            }
-          }
-
-          if (parsedMessage && parsedMessage['track-address']) {
-            if (/^([a-km-zA-HJ-NP-Z1-9]{26,35}|[a-km-zA-HJ-NP-Z1-9]{80}|[a-z]{2,5}1[ac-hj-np-z02-9]{8,100}|[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100})$/
-              .test(parsedMessage['track-address'])) {
-              let matchedAddress = parsedMessage['track-address'];
-              if (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}$/.test(parsedMessage['track-address'])) {
-                matchedAddress = matchedAddress.toLowerCase();
-              }
-              client['track-address'] = matchedAddress;
-            } else {
-              client['track-address'] = null;
-            }
-          }
-
-          if (parsedMessage && parsedMessage['track-asset']) {
-            if (/^[a-fA-F0-9]{64}$/.test(parsedMessage['track-asset'])) {
-              client['track-asset'] = parsedMessage['track-asset'];
-            } else {
-              client['track-asset'] = null;
-            }
-          }
-
-          if (parsedMessage.action === 'init') {
-            const _blocks = blocks.getBlocks().slice(-config.MEMPOOL.INITIAL_BLOCKS_AMOUNT);
-            if (!_blocks) {
-              return;
-            }
-            client.send(JSON.stringify(this.getInitData(_blocks)));
-          }
-
-          if (parsedMessage.action === 'ping') {
-            response['pong'] = true;
-          }
-
-          if (parsedMessage['track-donation'] && parsedMessage['track-donation'].length === 22) {
-            client['track-donation'] = parsedMessage['track-donation'];
-          }
-
-          if (parsedMessage['track-bisq-market']) {
-            if (/^[a-z]{3}_[a-z]{3}$/.test(parsedMessage['track-bisq-market'])) {
-              client['track-bisq-market'] = parsedMessage['track-bisq-market'];
-            } else {
-              client['track-bisq-market'] = null;
-            }
-          }
-
-          if (Object.keys(response).length) {
-            client.send(JSON.stringify(response));
-          }
-        } catch (e) {
-          logger.debug('Error parsing websocket message: ' + (e instanceof Error ? e.message : e));
-        }
-      });
-    });
-  }
-
-  handleNewDonation(id: string) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.clients.forEach((client: WebSocket) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-      if (client['track-donation'] === id) {
-        client.send(JSON.stringify({ donationConfirmed: true }));
-      }
-    });
-  }
-
-  handleLoadingChanged(indicators: ILoadingIndicators) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.clients.forEach((client: WebSocket) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-      client.send(JSON.stringify({ loadingIndicators: indicators }));
-    });
-  }
-
-  handleNewConversionRates(conversionRates: IConversionRates) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.clients.forEach((client: WebSocket) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-      client.send(JSON.stringify({ conversions: conversionRates }));
-    });
-  }
-
-  getInitData(_blocks?: BlockExtended[]) {
-    if (!_blocks) {
-      _blocks = blocks.getBlocks().slice(-config.MEMPOOL.INITIAL_BLOCKS_AMOUNT);
-    }
-    return {
-      'mempoolInfo': memPool.getMempoolInfo(),
-      'vBytesPerSecond': memPool.getVBytesPerSecond(),
-      'lastDifficultyAdjustment': blocks.getLastDifficultyAdjustmentTime(),
-      'previousRetarget': blocks.getPreviousDifficultyRetarget(),
-      'blocks': _blocks,
-      'conversions': fiatConversion.getConversionRates(),
-      'mempool-blocks': mempoolBlocks.getMempoolBlocks(),
-      'transactions': memPool.getLatestTransactions(),
-      'backendInfo': backendInfo.getBackendInfo(),
-      'loadingIndicators': loadingIndicators.getLoadingIndicators(),
-      ...this.extraInitProperties
-    };
-  }
-
-  handleNewStatistic(stats: OptimizedStatistic) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.clients.forEach((client: WebSocket) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-
-      if (!client['want-live-2h-chart']) {
-        return;
-      }
-
-      client.send(JSON.stringify({
-        'live-2h-chart': stats
-      }));
-    });
-  }
-
-  handleMempoolChange(newMempool: { [txid: string]: TransactionExtended },
-    newTransactions: TransactionExtended[], deletedTransactions: TransactionExtended[]) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    mempoolBlocks.updateMempoolBlocks(newMempool);
-    const mBlocks = mempoolBlocks.getMempoolBlocks();
-    const mempool = memPool.getMempool();
-    const mempoolInfo = memPool.getMempoolInfo();
-    const vBytesPerSecond = memPool.getVBytesPerSecond();
-    const rbfTransactions = Common.findRbfTransactions(newTransactions, deletedTransactions);
-
-    for (const rbfTransaction in rbfTransactions) {
-      delete mempool[rbfTransaction];
-    }
-
-    this.wss.clients.forEach(async (client: WebSocket) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-
-      const response = {};
-
-      if (client['want-stats']) {
-        response['mempoolInfo'] = mempoolInfo;
-        response['vBytesPerSecond'] = vBytesPerSecond;
-        response['transactions'] = newTransactions.slice(0, 6).map((tx) => Common.stripTransaction(tx));
-      }
-
-      if (client['want-mempool-blocks']) {
-        response['mempool-blocks'] = mBlocks;
-      }
-
-      if (client['track-mempool-tx']) {
-        const tx = newTransactions.find((t) => t.txid === client['track-mempool-tx']);
-        if (tx) {
-          if (config.MEMPOOL.BACKEND !== 'esplora') {
-            try {
-              const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true);
-              response['tx'] = fullTx;
-            } catch (e) {
-              logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
-            }
-          } else {
-            response['tx'] = tx;
-          }
-          client['track-mempool-tx'] = null;
-        }
-      }
-
-      if (client['track-address']) {
-        const foundTransactions: TransactionExtended[] = [];
-
-        for (const tx of newTransactions) {
-          const someVin = tx.vin.some((vin) => !!vin.prevout && vin.prevout.scriptpubkey_address === client['track-address']);
-          if (someVin) {
-            if (config.MEMPOOL.BACKEND !== 'esplora') {
-              try {
-                const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true);
-                foundTransactions.push(fullTx);
-              } catch (e) {
-                logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
-              }
-            } else {
-              foundTransactions.push(tx);
-            }
-            return;
-          }
-          const someVout = tx.vout.some((vout) => vout.scriptpubkey_address === client['track-address']);
-          if (someVout) {
-            if (config.MEMPOOL.BACKEND !== 'esplora') {
-              try {
-                const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true);
-                foundTransactions.push(fullTx);
-              } catch (e) {
-                logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
-              }
-            } else {
-              foundTransactions.push(tx);
-            }
-          }
-        }
-
-        if (foundTransactions.length) {
-          response['address-transactions'] = foundTransactions;
-        }
-      }
-
-      if (client['track-asset']) {
-        const foundTransactions: TransactionExtended[] = [];
-
-        newTransactions.forEach((tx) => {
-
-          if (client['track-asset'] === Common.nativeAssetId) {
-            if (tx.vin.some((vin) => !!vin.is_pegin)) {
-              foundTransactions.push(tx);
-              return;
-            }
-            if (tx.vout.some((vout) => !!vout.pegout)) {
-              foundTransactions.push(tx);
-            }
-          } else {
-            if (tx.vin.some((vin) => !!vin.issuance && vin.issuance.asset_id === client['track-asset'])) {
-              foundTransactions.push(tx);
-              return;
-            }
-            if (tx.vout.some((vout) => !!vout.asset && vout.asset === client['track-asset'])) {
-              foundTransactions.push(tx);
-            }
-          }
-        });
-
-        if (foundTransactions.length) {
-          response['address-transactions'] = foundTransactions;
-        }
-      }
-
-      if (client['track-tx'] && rbfTransactions[client['track-tx']]) {
-        for (const rbfTransaction in rbfTransactions) {
-          if (client['track-tx'] === rbfTransaction) {
-            const rbfTx = rbfTransactions[rbfTransaction];
-            if (config.MEMPOOL.BACKEND !== 'esplora') {
-              try {
-                const fullTx = await transactionUtils.$getTransactionExtended(rbfTransaction, true);
-                response['rbfTransaction'] = fullTx;
-              } catch (e) {
-                logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
-              }
-            } else {
-              response['rbfTransaction'] = rbfTx;
-            }
-            break;
-          }
-        }
-      }
-
-      if (Object.keys(response).length) {
-        client.send(JSON.stringify(response));
-      }
-    });
-  }
-
-  handleNewBlock(block: BlockExtended, txIds: string[], transactions: TransactionExtended[]) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    let mBlocks: undefined | MempoolBlock[];
-    let matchRate = 0;
-    const _memPool = memPool.getMempool();
-    const _mempoolBlocks = mempoolBlocks.getMempoolBlocksWithTransactions();
-
-    if (_mempoolBlocks[0]) {
-      const matches: string[] = [];
-      for (const txId of txIds) {
-        if (_mempoolBlocks[0].transactionIds.indexOf(txId) > -1) {
-          matches.push(txId);
-        }
-        delete _memPool[txId];
-      }
-
-      matchRate = Math.round((matches.length / (txIds.length - 1)) * 100);
-      mempoolBlocks.updateMempoolBlocks(_memPool);
-      mBlocks = mempoolBlocks.getMempoolBlocks();
-    }
-
-    block.matchRate = matchRate;
-
-    this.wss.clients.forEach((client) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-
-      if (!client['want-blocks']) {
-        return;
-      }
-
-      const response = {
-        'block': block,
-        'mempoolInfo': memPool.getMempoolInfo(),
-        'lastDifficultyAdjustment': blocks.getLastDifficultyAdjustmentTime(),
-        'previousRetarget': blocks.getPreviousDifficultyRetarget(),
-      };
-
-      if (mBlocks && client['want-mempool-blocks']) {
-        response['mempool-blocks'] = mBlocks;
-      }
-
-      if (client['track-tx'] && txIds.indexOf(client['track-tx']) > -1) {
-        client['track-tx'] = null;
-        response['txConfirmed'] = true;
-      }
-
-      if (client['track-address']) {
-        const foundTransactions: TransactionExtended[] = [];
-
-        transactions.forEach((tx) => {
-          if (tx.vin && tx.vin.some((vin) => !!vin.prevout && vin.prevout.scriptpubkey_address === client['track-address'])) {
-            foundTransactions.push(tx);
-            return;
-          }
-          if (tx.vout && tx.vout.some((vout) => vout.scriptpubkey_address === client['track-address'])) {
-            foundTransactions.push(tx);
-          }
-        });
-
-        if (foundTransactions.length) {
-          foundTransactions.forEach((tx) => {
-            tx.status = {
-              confirmed: true,
-              block_height: block.height,
-              block_hash: block.id,
-              block_time: block.timestamp,
-            };
-          });
-
-          response['block-transactions'] = foundTransactions;
-        }
-      }
-
-      if (client['track-asset']) {
-        const foundTransactions: TransactionExtended[] = [];
-
-        transactions.forEach((tx) => {
-          if (client['track-asset'] === Common.nativeAssetId) {
-            if (tx.vin && tx.vin.some((vin) => !!vin.is_pegin)) {
-              foundTransactions.push(tx);
-              return;
-            }
-            if (tx.vout && tx.vout.some((vout) => !!vout.pegout)) {
-              foundTransactions.push(tx);
-            }
-          } else {
-            if (tx.vin && tx.vin.some((vin) => !!vin.issuance && vin.issuance.asset_id === client['track-asset'])) {
-              foundTransactions.push(tx);
-              return;
-            }
-            if (tx.vout && tx.vout.some((vout) => !!vout.asset && vout.asset === client['track-asset'])) {
-              foundTransactions.push(tx);
-            }
-          }
-        });
-
-        if (foundTransactions.length) {
-          foundTransactions.forEach((tx) => {
-            tx.status = {
-              confirmed: true,
-              block_height: block.height,
-              block_hash: block.id,
-              block_time: block.timestamp,
-            };
-          });
-
-          response['block-transactions'] = foundTransactions;
-        }
-      }
-
-      client.send(JSON.stringify(response));
-    });
-  }
-}
-
-export default new WebsocketHandler();

backend/src/config.ts

@@ -1,162 +0,0 @@
-const configFile = require('../mempool-config.json');
-
-interface IConfig {
-  MEMPOOL: {
-    NETWORK: 'mainnet' | 'testnet' | 'signet' | 'liquid';
-    BACKEND: 'esplora' | 'electrum' | 'none';
-    HTTP_PORT: number;
-    SPAWN_CLUSTER_PROCS: number;
-    API_URL_PREFIX: string;
-    POLL_RATE_MS: number;
-    CACHE_DIR: string;
-    CLEAR_PROTECTION_MINUTES: number;
-    RECOMMENDED_FEE_PERCENTILE: number;
-    BLOCK_WEIGHT_UNITS: number;
-    INITIAL_BLOCKS_AMOUNT: number;
-    MEMPOOL_BLOCKS_AMOUNT: number;
-    PRICE_FEED_UPDATE_INTERVAL: number;
-    USE_SECOND_NODE_FOR_MINFEE: boolean;
-  };
-  ESPLORA: {
-    REST_API_URL: string;
-  };
-  ELECTRUM: {
-    HOST: string;
-    PORT: number;
-    TLS_ENABLED: boolean;
-  };
-  CORE_RPC: {
-    HOST: string;
-    PORT: number;
-    USERNAME: string;
-    PASSWORD: string;
-  };
-  SECOND_CORE_RPC: {
-    HOST: string;
-    PORT: number;
-    USERNAME: string;
-    PASSWORD: string;
-  };
-  DATABASE: {
-    ENABLED: boolean;
-    HOST: string,
-    PORT: number;
-    DATABASE: string;
-    USERNAME: string;
-    PASSWORD: string;
-  };
-  SYSLOG: {
-    ENABLED: boolean;
-    HOST: string;
-    PORT: number;
-    MIN_PRIORITY: 'emerg' | 'alert' | 'crit' | 'err' |'warn' | 'notice' | 'info' | 'debug';
-    FACILITY: string;
-  };
-  STATISTICS: {
-    ENABLED: boolean;
-    TX_PER_SECOND_SAMPLE_PERIOD: number;
-  };
-  BISQ: {
-    ENABLED: boolean;
-    DATA_PATH: string;
-  };
-}
-
-const defaults: IConfig = {
-  'MEMPOOL': {
-    'NETWORK': 'mainnet',
-    'BACKEND': 'none',
-    'HTTP_PORT': 8999,
-    'SPAWN_CLUSTER_PROCS': 0,
-    'API_URL_PREFIX': '/api/v1/',
-    'POLL_RATE_MS': 2000,
-    'CACHE_DIR': './cache',
-    'CLEAR_PROTECTION_MINUTES': 20,
-    'RECOMMENDED_FEE_PERCENTILE': 50,
-    'BLOCK_WEIGHT_UNITS': 4000000,
-    'INITIAL_BLOCKS_AMOUNT': 8,
-    'MEMPOOL_BLOCKS_AMOUNT': 8,
-    'PRICE_FEED_UPDATE_INTERVAL': 3600,
-    'USE_SECOND_NODE_FOR_MINFEE': false,
-  },
-  'ESPLORA': {
-    'REST_API_URL': 'http://127.0.0.1:3000',
-  },
-  'ELECTRUM': {
-    'HOST': '127.0.0.1',
-    'PORT': 3306,
-    'TLS_ENABLED': true,
-  },
-  'CORE_RPC': {
-    'HOST': '127.0.0.1',
-    'PORT': 8332,
-    'USERNAME': 'mempool',
-    'PASSWORD': 'mempool'
-  },
-  'SECOND_CORE_RPC': {
-    'HOST': '127.0.0.1',
-    'PORT': 8332,
-    'USERNAME': 'mempool',
-    'PASSWORD': 'mempool'
-  },
-  'DATABASE': {
-    'ENABLED': true,
-    'HOST': '127.0.0.1',
-    'PORT': 3306,
-    'DATABASE': 'mempool',
-    'USERNAME': 'mempool',
-    'PASSWORD': 'mempool'
-  },
-  'SYSLOG': {
-    'ENABLED': true,
-    'HOST': '127.0.0.1',
-    'PORT': 514,
-    'MIN_PRIORITY': 'info',
-    'FACILITY': 'local7'
-  },
-  'STATISTICS': {
-    'ENABLED': true,
-    'TX_PER_SECOND_SAMPLE_PERIOD': 150
-  },
-  'BISQ': {
-    'ENABLED': false,
-    'DATA_PATH': '/bisq/statsnode-data/btc_mainnet/db'
-  },
-};
-
-class Config implements IConfig {
-  MEMPOOL: IConfig['MEMPOOL'];
-  ESPLORA: IConfig['ESPLORA'];
-  ELECTRUM: IConfig['ELECTRUM'];
-  CORE_RPC: IConfig['CORE_RPC'];
-  SECOND_CORE_RPC: IConfig['SECOND_CORE_RPC'];
-  DATABASE: IConfig['DATABASE'];
-  SYSLOG: IConfig['SYSLOG'];
-  STATISTICS: IConfig['STATISTICS'];
-  BISQ: IConfig['BISQ'];
-
-  constructor() {
-    const configs = this.merge(configFile, defaults);
-    this.MEMPOOL = configs.MEMPOOL;
-    this.ESPLORA = configs.ESPLORA;
-    this.ELECTRUM = configs.ELECTRUM;
-    this.CORE_RPC = configs.CORE_RPC;
-    this.SECOND_CORE_RPC = configs.SECOND_CORE_RPC;
-    this.DATABASE = configs.DATABASE;
-    this.SYSLOG = configs.SYSLOG;
-    this.STATISTICS = configs.STATISTICS;
-    this.BISQ = configs.BISQ;
-  }
-
-  merge = (...objects: object[]): IConfig => {
-    // @ts-ignore
-    return objects.reduce((prev, next) => {
-      Object.keys(prev).forEach(key => {
-        next[key] = { ...next[key], ...prev[key] };
-      });
-      return next;
-    });
-  }
-}
-
-export default new Config();

backend/src/database.ts

@@ -1,14 +1,13 @@
-import config from './config';
+const config = require('../mempool-config.json');
 import { createPool } from 'mysql2/promise';
-import logger from './logger';
 
 export class DB {
   static pool = createPool({
-    host: config.DATABASE.HOST,
-    port: config.DATABASE.PORT,
-    database: config.DATABASE.DATABASE,
-    user: config.DATABASE.USERNAME,
-    password: config.DATABASE.PASSWORD,
+    host: config.DB_HOST,
+    port: config.DB_PORT,
+    database: config.DB_DATABASE,
+    user: config.DB_USER,
+    password: config.DB_PASSWORD,
     connectionLimit: 10,
     supportBigNumbers: true,
   });
@@ -17,10 +16,11 @@ export class DB {
 export async function checkDbConnection() {
   try {
     const connection = await DB.pool.getConnection();
-    logger.info('Database connection established.');
+    console.log('MySQL connection established.');
     connection.release();
   } catch (e) {
-    logger.err('Could not connect to database: ' + (e instanceof Error ? e.message : e));
+    console.log('Could not connect to MySQL.');
+    console.log(e);
     process.exit(1);
   }
 }

backend/src/index.ts

@@ -1,281 +1,284 @@
-import { Express, Request, Response, NextFunction } from 'express';
+const config = require('../mempool-config.json');
+import * as fs from 'fs';
 import * as express from 'express';
+import * as compression from 'compression';
 import * as http from 'http';
+import * as https from 'https';
 import * as WebSocket from 'ws';
-import * as cluster from 'cluster';
-import axios from 'axios';
 
-import { checkDbConnection } from './database';
-import config from './config';
-import routes from './routes';
-import blocks from './api/blocks';
-import memPool from './api/mempool';
+import bitcoinApi from './api/bitcoin/bitcoin-api-factory';
 import diskCache from './api/disk-cache';
+import memPool from './api/mempool';
+import blocks from './api/blocks';
+import projectedBlocks from './api/projected-blocks';
 import statistics from './api/statistics';
-import websocketHandler from './api/websocket-handler';
-import fiatConversion from './api/fiat-conversion';
-import bisq from './api/bisq/bisq';
-import bisqMarkets from './api/bisq/markets';
-import logger from './logger';
-import backendInfo from './api/backend-info';
-import loadingIndicators from './api/loading-indicators';
-import mempool from './api/mempool';
-import elementsParser from './api/liquid/elements-parser';
+import { IBlock, IMempool, ITransaction, IMempoolStats } from './interfaces';
 
-class Server {
-  private wss: WebSocket.Server | undefined;
-  private server: http.Server | undefined;
-  private app: Express;
-  private currentBackendRetryInterval = 5;
+import routes from './routes';
+import fiatConversion from './api/fiat-conversion';
+
+class MempoolSpace {
+  private wss: WebSocket.Server;
+  private server: https.Server | http.Server;
+  private app: any;
 
   constructor() {
     this.app = express();
-
-    if (!config.MEMPOOL.SPAWN_CLUSTER_PROCS) {
-      this.startServer();
-      return;
-    }
-
-    if (cluster.isMaster) {
-      logger.notice(`Mempool Server (Master) is running on port ${config.MEMPOOL.HTTP_PORT} (${backendInfo.getShortCommitHash()})`);
-
-      const numCPUs = config.MEMPOOL.SPAWN_CLUSTER_PROCS;
-      for (let i = 0; i < numCPUs; i++) {
-        const env = { workerId: i };
-        const worker = cluster.fork(env);
-        worker.process['env'] = env;
-      }
-
-      cluster.on('exit', (worker, code, signal) => {
-        const workerId = worker.process['env'].workerId;
-        logger.warn(`Mempool Worker PID #${worker.process.pid} workerId: ${workerId} died. Restarting in 10 seconds... ${signal || code}`);
-        setTimeout(() => {
-          const env = { workerId: workerId };
-          const newWorker = cluster.fork(env);
-          newWorker.process['env'] = env;
-        }, 10000);
-      });
-    } else {
-      this.startServer(true);
-    }
-  }
-
-  async startServer(worker = false) {
-    logger.debug(`Starting Mempool Server${worker ? ' (worker)' : ''}... (${backendInfo.getShortCommitHash()})`);
-
     this.app
-      .use((req: Request, res: Response, next: NextFunction) => {
+      .use((req, res, next)  => {
         res.setHeader('Access-Control-Allow-Origin', '*');
         next();
       })
-      .use(express.urlencoded({ extended: true }))
-      .use(express.text())
-    ;
-
-    this.server = http.createServer(this.app);
-    this.wss = new WebSocket.Server({ server: this.server });
+      .use(compression());
+    if (config.ENV === 'dev') {
+      this.server = http.createServer(this.app);
+      this.wss = new WebSocket.Server({ server: this.server });
+    } else {
+      const credentials = {
+        cert: fs.readFileSync('/etc/letsencrypt/live/mempool.space/fullchain.pem'),
+        key: fs.readFileSync('/etc/letsencrypt/live/mempool.space/privkey.pem'),
+      };
+      this.server = https.createServer(credentials, this.app);
+      this.wss = new WebSocket.Server({ server: this.server });
+    }
 
+    this.setUpRoutes();
     this.setUpWebsocketHandling();
+    this.setUpMempoolCache();
+    this.runMempoolIntervalFunctions();
 
-    diskCache.loadMempoolCache();
-
-    if (config.DATABASE.ENABLED) {
-      await checkDbConnection();
-    }
-
-    if (config.STATISTICS.ENABLED && config.DATABASE.ENABLED && cluster.isMaster) {
-      statistics.startStatistics();
-    }
-
+    statistics.startStatistics();
     fiatConversion.startService();
 
-    this.setUpHttpApiRoutes();
-    this.runMainUpdateLoop();
-
-    if (config.BISQ.ENABLED) {
-      bisq.startBisqService();
-      bisq.setPriceCallbackFunction((price) => websocketHandler.setExtraInitProperties('bsq-price', price));
-      blocks.setNewBlockCallback(bisq.handleNewBitcoinBlock.bind(bisq));
-      bisqMarkets.startBisqService();
-    }
-
-    this.server.listen(config.MEMPOOL.HTTP_PORT, () => {
-      if (worker) {
-        logger.info(`Mempool Server worker #${process.pid} started`);
-      } else {
-        logger.notice(`Mempool Server is running on port ${config.MEMPOOL.HTTP_PORT}`);
-      }
+    const opts = {
+        host: '127.0.0.1',
+        port: 8999
+    };
+    this.server.listen(opts, () => {
+      console.log(`Server started on ${opts.host}:${opts.port}`);
     });
   }
 
-  async runMainUpdateLoop() {
-    try {
-      try {
-        await memPool.$updateMemPoolInfo();
-      } catch (e) {
-        const msg = `updateMempoolInfo: ${(e instanceof Error ? e.message : e)}`;
-        if (config.MEMPOOL.USE_SECOND_NODE_FOR_MINFEE) {
-          logger.warn(msg);
-        } else {
-          logger.debug(msg);
-        }
-      }
-      await blocks.$updateBlocks();
-      await memPool.$updateMempool();
-      setTimeout(this.runMainUpdateLoop.bind(this), config.MEMPOOL.POLL_RATE_MS);
-      this.currentBackendRetryInterval = 5;
-    } catch (e) {
-      const loggerMsg = `runMainLoop error: ${(e instanceof Error ? e.message : e)}. Retrying in ${this.currentBackendRetryInterval} sec.`;
-      if (this.currentBackendRetryInterval > 5) {
-        logger.warn(loggerMsg);
-        mempool.setOutOfSync();
-      } else {
-        logger.debug(loggerMsg);
-      }
-      logger.debug(JSON.stringify(e));
-      setTimeout(this.runMainUpdateLoop.bind(this), 1000 * this.currentBackendRetryInterval);
-      this.currentBackendRetryInterval *= 2;
-      this.currentBackendRetryInterval = Math.min(this.currentBackendRetryInterval, 60);
-    }
+  private async runMempoolIntervalFunctions() {
+    await blocks.updateBlocks();
+    await memPool.updateMemPoolInfo();
+    await memPool.updateMempool();
+    setTimeout(this.runMempoolIntervalFunctions.bind(this), config.MEMPOOL_REFRESH_RATE_MS);
   }
 
-  setUpWebsocketHandling() {
-    if (this.wss) {
-      websocketHandler.setWebsocketServer(this.wss);
+  private setUpMempoolCache() {
+    const cacheData = diskCache.loadData();
+    if (cacheData) {
+      memPool.setMempool(JSON.parse(cacheData));
     }
-    if (config.MEMPOOL.NETWORK === 'liquid' && config.DATABASE.ENABLED) {
-      blocks.setNewBlockCallback(async () => {
+
+    process.on('SIGINT', (options) => {
+      console.log('SIGINT');
+      diskCache.saveData(JSON.stringify(memPool.getMempool()));
+      process.exit(2);
+    });
+  }
+
+  private setUpWebsocketHandling() {
+    this.wss.on('connection', (client: WebSocket) => {
+      let theBlocks = blocks.getBlocks();
+      theBlocks = theBlocks.concat([]).splice(theBlocks.length - config.INITIAL_BLOCK_AMOUNT);
+      const formatedBlocks = theBlocks.map((b) => blocks.formatBlock(b));
+
+      client.send(JSON.stringify({
+        'mempoolInfo': memPool.getMempoolInfo(),
+        'blocks': formatedBlocks,
+        'projectedBlocks': projectedBlocks.getProjectedBlocks(),
+        'txPerSecond': memPool.getTxPerSecond(),
+        'vBytesPerSecond': memPool.getVBytesPerSecond(),
+        'conversions': fiatConversion.getTickers()['BTCUSD'],
+      }));
+
+      client.on('message', async (message: any) => {
         try {
-          await elementsParser.$parse();
+          const parsedMessage = JSON.parse(message);
+
+          if (parsedMessage.action === 'want') {
+            client['want-stats'] = parsedMessage.data.indexOf('stats') > -1;
+            client['want-blocks'] = parsedMessage.data.indexOf('blocks') > -1;
+            client['want-projected-blocks'] = parsedMessage.data.indexOf('projected-blocks') > -1;
+            client['want-live-2h-chart'] = parsedMessage.data.indexOf('live-2h-chart') > -1;
+          }
+
+          if (parsedMessage.action === 'track-tx' && parsedMessage.txId && /^[a-fA-F0-9]{64}$/.test(parsedMessage.txId)) {
+            const tx = await memPool.getRawTransaction(parsedMessage.txId);
+            if (tx) {
+              console.log('Now tracking: ' + parsedMessage.txId);
+              client['trackingTx'] = true;
+              client['txId'] = parsedMessage.txId;
+              client['tx'] = tx;
+
+              if (tx.blockhash) {
+                const currentBlocks = blocks.getBlocks();
+                const foundBlock = currentBlocks.find((block) => block.tx && block.tx.some((i: string) => i === parsedMessage.txId));
+                if (foundBlock) {
+                  console.log('Found block by looking in local cache');
+                  client['blockHeight'] = foundBlock.height;
+                } else {
+                  const theBlock = await bitcoinApi.getBlockAndTransactions(tx.blockhash);
+                  if (theBlock) {
+                    client['blockHeight'] = theBlock.height;
+                  }
+                }
+              } else {
+                client['blockHeight'] = 0;
+              }
+              client.send(JSON.stringify({
+                'projectedBlocks': projectedBlocks.getProjectedBlocks(client['txId']),
+                'track-tx': {
+                  tracking: true,
+                  blockHeight: client['blockHeight'],
+                  tx: client['tx'],
+                }
+              }));
+            } else {
+              console.log('TX NOT FOUND, NOT TRACKING');
+              client['trackingTx'] = false;
+              client['blockHeight'] = 0;
+              client['tx'] = null;
+              client.send(JSON.stringify({
+                'track-tx': {
+                  tracking: false,
+                  blockHeight: 0,
+                  message: 'not-found',
+                }
+              }));
+            }
+          }
+          if (parsedMessage.action === 'stop-tracking-tx') {
+            console.log('STOP TRACKING');
+            client['trackingTx'] = false;
+            client.send(JSON.stringify({
+              'track-tx': {
+                tracking: false,
+                blockHeight: 0,
+                message: 'not-found',
+              }
+            }));
+          }
         } catch (e) {
-          logger.warn('Elements parsing error: ' + (e instanceof Error ? e.message : e));
+          console.log(e);
         }
       });
-    }
-    websocketHandler.setupConnectionHandling();
-    statistics.setNewStatisticsEntryCallback(websocketHandler.handleNewStatistic.bind(websocketHandler));
-    blocks.setNewBlockCallback(websocketHandler.handleNewBlock.bind(websocketHandler));
-    memPool.setMempoolChangedCallback(websocketHandler.handleMempoolChange.bind(websocketHandler));
-    fiatConversion.setProgressChangedCallback(websocketHandler.handleNewConversionRates.bind(websocketHandler));
-    loadingIndicators.setProgressChangedCallback(websocketHandler.handleLoadingChanged.bind(websocketHandler));
+
+      client.on('close', () => {
+        client['trackingTx'] = false;
+      });
+    });
+
+    blocks.setNewBlockCallback((block: IBlock) => {
+      const formattedBlocks = blocks.formatBlock(block);
+
+      this.wss.clients.forEach((client) => {
+        if (client.readyState !== WebSocket.OPEN) {
+          return;
+        }
+
+        const response = {};
+
+        if (client['trackingTx'] === true && client['blockHeight'] === 0) {
+          if (block.tx.some((tx: ITransaction) => tx === client['txId'])) {
+            client['blockHeight'] = block.height;
+          }
+        }
+
+        response['track-tx'] = {
+          tracking: client['trackingTx'] || false,
+          blockHeight: client['blockHeight'],
+        };
+
+        response['block'] = formattedBlocks;
+
+        client.send(JSON.stringify(response));
+      });
+    });
+
+    memPool.setMempoolChangedCallback((newMempool: IMempool) => {
+      projectedBlocks.updateProjectedBlocks(newMempool);
+
+      const pBlocks = projectedBlocks.getProjectedBlocks();
+      const mempoolInfo = memPool.getMempoolInfo();
+      const txPerSecond = memPool.getTxPerSecond();
+      const vBytesPerSecond = memPool.getVBytesPerSecond();
+
+      this.wss.clients.forEach((client: WebSocket) => {
+        if (client.readyState !== WebSocket.OPEN) {
+          return;
+        }
+
+        const response = {};
+
+        if (client['want-stats']) {
+          response['mempoolInfo'] = mempoolInfo;
+          response['txPerSecond'] = txPerSecond;
+          response['vBytesPerSecond'] = vBytesPerSecond;
+          response['track-tx'] = {
+            tracking: client['trackingTx'] || false,
+            blockHeight: client['blockHeight'],
+          };
+        }
+
+        if (client['want-projected-blocks'] && client['trackingTx'] && client['blockHeight'] === 0) {
+          response['projectedBlocks'] = projectedBlocks.getProjectedBlocks(client['txId']);
+        } else if (client['want-projected-blocks']) {
+          response['projectedBlocks'] = pBlocks;
+        }
+
+        if (Object.keys(response).length) {
+          client.send(JSON.stringify(response));
+        }
+      });
+    });
+
+    statistics.setNewStatisticsEntryCallback((stats: IMempoolStats) => {
+      this.wss.clients.forEach((client: WebSocket) => {
+        if (client.readyState !== WebSocket.OPEN) {
+          return;
+        }
+
+        if (client['want-live-2h-chart']) {
+          client.send(JSON.stringify({
+            'live-2h-chart': stats
+          }));
+        }
+      });
+    });
   }
 
-  setUpHttpApiRoutes() {
+  private setUpRoutes() {
     this.app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'transaction-times', routes.getTransactionTimes)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'cpfp/:txId', routes.getCpfpInfo)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'difficulty-adjustment', routes.getDifficultyChange)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'fees/recommended', routes.getRecommendedFees)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'fees/mempool-blocks', routes.getMempoolBlocks)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'backend-info', routes.getBackendInfo)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'init-data', routes.getInitData)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'validate-address/:address', routes.validateAddress)
-      .post(config.MEMPOOL.API_URL_PREFIX + 'tx/push', routes.$postTransactionForm)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'donations', async (req, res) => {
-        try {
-          const response = await axios.get('https://mempool.space/api/v1/donations', { responseType: 'stream', timeout: 10000 });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'donations/images/:id', async (req, res) => {
-        try {
-          const response = await axios.get('https://mempool.space/api/v1/donations/images/' + req.params.id, {
-            responseType: 'stream', timeout: 10000
-          });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'contributors', async (req, res) => {
-        try {
-          const response = await axios.get('https://mempool.space/api/v1/contributors', { responseType: 'stream', timeout: 10000 });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'contributors/images/:id', async (req, res) => {
-        try {
-          const response = await axios.get('https://mempool.space/api/v1/contributors/images/' + req.params.id, {
-            responseType: 'stream', timeout: 10000
-          });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-    ;
+      .get(config.API_ENDPOINT + 'transactions/height/:id', routes.$getgetTransactionsForBlock)
+      .get(config.API_ENDPOINT + 'transactions/projected/:id', routes.getgetTransactionsForProjectedBlock)
+      .get(config.API_ENDPOINT + 'fees/recommended', routes.getRecommendedFees)
+      .get(config.API_ENDPOINT + 'fees/projected-blocks', routes.getProjectedBlocks)
+      .get(config.API_ENDPOINT + 'statistics/2h', routes.get2HStatistics)
+      .get(config.API_ENDPOINT + 'statistics/24h', routes.get24HStatistics.bind(routes))
+      .get(config.API_ENDPOINT + 'statistics/1w', routes.get1WHStatistics.bind(routes))
+      .get(config.API_ENDPOINT + 'statistics/1m', routes.get1MStatistics.bind(routes))
+      .get(config.API_ENDPOINT + 'statistics/3m', routes.get3MStatistics.bind(routes))
+      .get(config.API_ENDPOINT + 'statistics/6m', routes.get6MStatistics.bind(routes))
+      ;
 
-    if (config.STATISTICS.ENABLED && config.DATABASE.ENABLED) {
+    if (config.BACKEND_API === 'electrs') {
       this.app
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/2h', routes.get2HStatistics)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/24h', routes.get24HStatistics.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/1w', routes.get1WHStatistics.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/1m', routes.get1MStatistics.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/3m', routes.get3MStatistics.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/6m', routes.get6MStatistics.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/1y', routes.get1YStatistics.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/2y', routes.get2YStatistics.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/3y', routes.get3YStatistics.bind(routes))
+        .get(config.API_ENDPOINT + 'explorer/blocks', routes.getBlocks)
+        .get(config.API_ENDPOINT + 'explorer/blocks/:height', routes.getBlocks)
+        .get(config.API_ENDPOINT + 'explorer/tx/:id', routes.getRawTransaction)
+        .get(config.API_ENDPOINT + 'explorer/block/:hash', routes.getBlock)
+        .get(config.API_ENDPOINT + 'explorer/block/:hash/tx', routes.getBlockTransactions)
+        .get(config.API_ENDPOINT + 'explorer/block/:hash/tx/:index', routes.getBlockTransactionsFromIndex)
+        .get(config.API_ENDPOINT + 'explorer/address/:address', routes.getAddress)
+        .get(config.API_ENDPOINT + 'explorer/address/:address/tx', routes.getAddressTransactions)
+        .get(config.API_ENDPOINT + 'explorer/address/:address/tx/chain/:txid', routes.getAddressTransactionsFromTxid)
         ;
     }
 
-    if (config.BISQ.ENABLED) {
-      this.app
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/stats', routes.getBisqStats)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/tx/:txId', routes.getBisqTransaction)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/block/:hash', routes.getBisqBlock)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/blocks/tip/height', routes.getBisqTip)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/blocks/:index/:length', routes.getBisqBlocks)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/address/:address', routes.getBisqAddress)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/txs/:index/:length', routes.getBisqTransactions)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/currencies', routes.getBisqMarketCurrencies.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/depth', routes.getBisqMarketDepth.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/hloc', routes.getBisqMarketHloc.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/markets', routes.getBisqMarketMarkets.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/offers', routes.getBisqMarketOffers.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/ticker', routes.getBisqMarketTicker.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/trades', routes.getBisqMarketTrades.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/volumes', routes.getBisqMarketVolumes.bind(routes))
-        .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/volumes/7d', routes.getBisqMarketVolumes7d.bind(routes))
-        ;
-    }
-
-    if (config.MEMPOOL.BACKEND !== 'esplora') {
-      this.app
-        .get(config.MEMPOOL.API_URL_PREFIX + 'mempool', routes.getMempool)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'mempool/txids', routes.getMempoolTxIds)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'mempool/recent', routes.getRecentMempoolTransactions)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId', routes.getTransaction)
-        .post(config.MEMPOOL.API_URL_PREFIX + 'tx', routes.$postTransaction)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/hex', routes.getRawTransaction)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/status', routes.getTransactionStatus)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/outspends', routes.getTransactionOutspends)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash', routes.getBlock)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/header', routes.getBlockHeader)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'blocks', routes.getBlocks)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/:height', routes.getBlocks)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/tip/height', routes.getBlockTipHeight)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txs', routes.getBlockTransactions)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txs/:index', routes.getBlockTransactions)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txids', routes.getTxIdsForBlock)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'block-height/:height', routes.getBlockHeight)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address', routes.getAddress)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address/txs', routes.getAddressTransactions)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address/txs/chain/:txId', routes.getAddressTransactions)
-        .get(config.MEMPOOL.API_URL_PREFIX + 'address-prefix/:prefix', routes.getAddressPrefix)
-      ;
-    }
-
-    if (config.MEMPOOL.NETWORK === 'liquid' && config.DATABASE.ENABLED) {
-      this.app
-        .get(config.MEMPOOL.API_URL_PREFIX + 'liquid/pegs/month', routes.$getElementsPegsByMonth)
-      ;
     }
   }
-}
 
-const server = new Server();
+const mempoolSpace = new MempoolSpace();

backend/src/interfaces.ts

@@ -0,0 +1,152 @@
+export interface IMempoolInfo {
+  size: number;
+  bytes: number;
+  usage?: number;
+  maxmempool?: number;
+  mempoolminfee?: number;
+  minrelaytxfee?: number;
+}
+
+export interface ITransaction {
+  txid: string;
+  hash: string;
+  version: number;
+  size: number;
+  vsize: number;
+  weight: number;
+  locktime: number;
+  vin: Vin[];
+  vout: Vout[];
+  hex: string;
+  fee: number;
+  feePerWeightUnit: number;
+  feePerVsize: number;
+  blockhash?: string;
+  confirmations?: number;
+  time?: number;
+  blocktime?: number;
+  totalOut?: number;
+}
+
+export interface IBlock {
+  hash: string;
+  confirmations: number;
+  strippedsize: number;
+  size: number;
+  weight: number;
+  height: number;
+  version: number;
+  versionHex: string;
+  merkleroot: string;
+  tx: any;
+  time: number;
+  mediantime: number;
+  nonce: number;
+  bits: string;
+  difficulty: number;
+  chainwork: string;
+  nTx: number;
+  previousblockhash: string;
+  fees: number;
+
+  minFee?: number;
+  maxFee?: number;
+  medianFee?: number;
+}
+
+interface ScriptSig {
+  asm: string;
+  hex: string;
+}
+
+interface Vin {
+  txid: string;
+  vout: number;
+  scriptSig: ScriptSig;
+  sequence: number;
+}
+
+interface ScriptPubKey {
+  asm: string;
+  hex: string;
+  reqSigs: number;
+  type: string;
+  addresses: string[];
+}
+
+interface Vout {
+  value: number;
+  n: number;
+  scriptPubKey: ScriptPubKey;
+}
+
+export interface IMempoolStats {
+  id?: number;
+  added: string;
+  unconfirmed_transactions: number;
+  tx_per_second: number;
+  vbytes_per_second: number;
+  total_fee: number;
+  mempool_byte_weight: number;
+  fee_data: string;
+
+  vsize_1: number;
+  vsize_2: number;
+  vsize_3: number;
+  vsize_4: number;
+  vsize_5: number;
+  vsize_6: number;
+  vsize_8: number;
+  vsize_10: number;
+  vsize_12: number;
+  vsize_15: number;
+  vsize_20: number;
+  vsize_30: number;
+  vsize_40: number;
+  vsize_50: number;
+  vsize_60: number;
+  vsize_70: number;
+  vsize_80: number;
+  vsize_90: number;
+  vsize_100: number;
+  vsize_125: number;
+  vsize_150: number;
+  vsize_175: number;
+  vsize_200: number;
+  vsize_250: number;
+  vsize_300: number;
+  vsize_350: number;
+  vsize_400: number;
+  vsize_500: number;
+  vsize_600: number;
+  vsize_700: number;
+  vsize_800: number;
+  vsize_900: number;
+  vsize_1000: number;
+  vsize_1200: number;
+  vsize_1400: number;
+  vsize_1600: number;
+  vsize_1800: number;
+  vsize_2000: number;
+}
+
+export interface IProjectedBlockInternal extends IProjectedBlock {
+  txIds: string[];
+  txFeePerVsizes: number[];
+}
+
+export interface IProjectedBlock {
+  blockSize: number;
+  blockWeight: number;
+  maxFee: number;
+  maxWeightFee: number;
+  medianFee: number;
+  minFee: number;
+  minWeightFee: number;
+  nTx: number;
+  fees: number;
+  hasMyTxId?: boolean;
+}
+
+export interface IMempool { [txid: string]: ITransaction; }
+

backend/src/logger.ts

@@ -1,145 +0,0 @@
-import config from './config';
-import * as dgram from 'dgram';
-
-class Logger {
-  static priorities = {
-    emerg: 0,
-    alert: 1,
-    crit: 2,
-    err: 3,
-    warn: 4,
-    notice: 5,
-    info: 6,
-    debug: 7
-  };
-  static facilities = {
-    kern: 0,
-    user: 1,
-    mail: 2,
-    daemon: 3,
-    auth: 4,
-    syslog: 5,
-    lpr: 6,
-    news: 7,
-    uucp: 8,
-    local0: 16,
-    local1: 17,
-    local2: 18,
-    local3: 19,
-    local4: 20,
-    local5: 21,
-    local6: 22,
-    local7: 23
-  };
-
-  // @ts-ignore
-  public emerg: ((msg: string) => void);
-  // @ts-ignore
-  public alert: ((msg: string) => void);
-  // @ts-ignore
-  public crit: ((msg: string) => void);
-  // @ts-ignore
-  public err: ((msg: string) => void);
-  // @ts-ignore
-  public warn: ((msg: string) => void);
-  // @ts-ignore
-  public notice: ((msg: string) => void);
-  // @ts-ignore
-  public info: ((msg: string) => void);
-  // @ts-ignore
-  public debug: ((msg: string) => void);
-
-  private name = 'mempool';
-  private client: dgram.Socket;
-  private network: string;
-
-  constructor() {
-    let prio;
-    for (prio in Logger.priorities) {
-      if (true) {
-        this.addprio(prio);
-      }
-    }
-    this.client = dgram.createSocket('udp4');
-    this.network = this.getNetwork();
-  }
-
-  private addprio(prio): void {
-    this[prio] = (function(_this) {
-      return function(msg) {
-        return _this.msg(prio, msg);
-      };
-    })(this);
-  }
-
-  private getNetwork(): string {
-    if (config.BISQ.ENABLED) {
-      return 'bisq';
-    }
-    if (config.MEMPOOL.NETWORK && config.MEMPOOL.NETWORK !== 'mainnet') {
-      return config.MEMPOOL.NETWORK;
-    }
-    return '';
-  }
-
-  private msg(priority, msg) {
-    let consolemsg, prionum, syslogmsg;
-    if (typeof msg === 'string' && msg.length > 0) {
-      while (msg[msg.length - 1].charCodeAt(0) === 10) {
-        msg = msg.slice(0, msg.length - 1);
-      }
-    }
-    const network = this.network ? ' <' + this.network + '>' : '';
-    prionum = Logger.priorities[priority] || Logger.priorities.info;
-    consolemsg = `${this.ts()} [${process.pid}] ${priority.toUpperCase()}:${network} ${msg}`;
-
-    if (config.SYSLOG.ENABLED && Logger.priorities[priority] <= Logger.priorities[config.SYSLOG.MIN_PRIORITY]) {
-      syslogmsg = `<${(Logger.facilities[config.SYSLOG.FACILITY] * 8 + prionum)}> ${this.name}[${process.pid}]: ${priority.toUpperCase()}${network} ${msg}`;
-      this.syslog(syslogmsg);
-    }
-    if (priority === 'warning') {
-      priority = 'warn';
-    }
-    if (priority === 'debug') {
-      priority = 'info';
-    }
-    if (priority === 'err') {
-      priority = 'error';
-    }
-    return (console[priority] || console.error)(consolemsg);
-  }
-
-  private syslog(msg) {
-    let msgbuf;
-    msgbuf = Buffer.from(msg);
-    this.client.send(msgbuf, 0, msgbuf.length, config.SYSLOG.PORT, config.SYSLOG.HOST, function(err, bytes) {
-      if (err) {
-        console.log(err);
-      }
-    });
-  }
-
-  private leadZero(n: number): number | string {
-    if (n < 10) {
-      return '0' + n;
-    }
-    return n;
-  }
-
-  private ts() {
-    let day, dt, hours, minutes, month, months, seconds;
-    dt = new Date();
-    hours = this.leadZero(dt.getHours());
-    minutes = this.leadZero(dt.getMinutes());
-    seconds = this.leadZero(dt.getSeconds());
-    month = dt.getMonth();
-    day = dt.getDate();
-    if (day < 10) {
-      day = ' ' + day;
-    }
-    months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
-    return months[month] + ' ' + day + ' ' + hours + ':' + minutes + ':' + seconds;
-  }
-}
-
-export default new Logger();

backend/src/mempool.interfaces.ts

@@ -1,169 +0,0 @@
-import { IEsploraApi } from './api/bitcoin/esplora-api.interface';
-
-export interface MempoolBlock {
-  blockSize: number;
-  blockVSize: number;
-  nTx: number;
-  medianFee: number;
-  totalFees: number;
-  feeRange: number[];
-}
-
-export interface MempoolBlockWithTransactions extends MempoolBlock {
-  transactionIds: string[];
-}
-
-interface VinStrippedToScriptsig {
-  scriptsig: string;
-}
-
-interface VoutStrippedToScriptPubkey {
-  scriptpubkey_address: string | undefined;
-  value: number;
-}
-
-export interface TransactionExtended extends IEsploraApi.Transaction {
-  vsize: number;
-  feePerVsize: number;
-  firstSeen?: number;
-  effectiveFeePerVsize: number;
-  ancestors?: Ancestor[];
-  bestDescendant?: BestDescendant | null;
-  cpfpChecked?: boolean;
-  deleteAfter?: number;
-}
-
-interface Ancestor {
-  txid: string;
-  weight: number;
-  fee: number;
-}
-
-interface BestDescendant {
-  txid: string;
-  weight: number;
-  fee: number;
-}
-
-export interface CpfpInfo {
-  ancestors: Ancestor[];
-  bestDescendant: BestDescendant | null;
-}
-
-export interface TransactionStripped {
-  txid: string;
-  fee: number;
-  vsize: number;
-  value: number;
-}
-export interface BlockExtended extends IEsploraApi.Block {
-  medianFee?: number;
-  feeRange?: number[];
-  reward?: number;
-  coinbaseTx?: TransactionMinerInfo;
-  matchRate?: number;
-}
-
-export interface TransactionMinerInfo {
-  vin: VinStrippedToScriptsig[];
-  vout: VoutStrippedToScriptPubkey[];
-}
-
-export interface MempoolStats {
-  funded_txo_count: number;
-  funded_txo_sum: number;
-  spent_txo_count: number;
-  spent_txo_sum: number;
-  tx_count: number;
-}
-
-export interface Statistic {
-  id?: number;
-  added: string;
-  unconfirmed_transactions: number;
-  tx_per_second: number;
-  vbytes_per_second: number;
-  total_fee: number;
-  mempool_byte_weight: number;
-  fee_data: string;
-
-  vsize_1: number;
-  vsize_2: number;
-  vsize_3: number;
-  vsize_4: number;
-  vsize_5: number;
-  vsize_6: number;
-  vsize_8: number;
-  vsize_10: number;
-  vsize_12: number;
-  vsize_15: number;
-  vsize_20: number;
-  vsize_30: number;
-  vsize_40: number;
-  vsize_50: number;
-  vsize_60: number;
-  vsize_70: number;
-  vsize_80: number;
-  vsize_90: number;
-  vsize_100: number;
-  vsize_125: number;
-  vsize_150: number;
-  vsize_175: number;
-  vsize_200: number;
-  vsize_250: number;
-  vsize_300: number;
-  vsize_350: number;
-  vsize_400: number;
-  vsize_500: number;
-  vsize_600: number;
-  vsize_700: number;
-  vsize_800: number;
-  vsize_900: number;
-  vsize_1000: number;
-  vsize_1200: number;
-  vsize_1400: number;
-  vsize_1600: number;
-  vsize_1800: number;
-  vsize_2000: number;
-}
-
-export interface OptimizedStatistic {
-  id: number;
-  added: string;
-  unconfirmed_transactions: number;
-  tx_per_second: number;
-  vbytes_per_second: number;
-  total_fee: number;
-  mempool_byte_weight: number;
-  vsizes: number[];
-}
-
-export interface WebsocketResponse {
-  action: string;
-  data: string[];
-  'track-tx': string;
-  'track-address': string;
-  'watch-mempool': boolean;
-  'track-bisq-market': string;
-}
-
-export interface VbytesPerSecond {
-  unixTime: number;
-  vSize: number;
-}
-
-export interface RequiredSpec { [name: string]: RequiredParams; }
-
-interface RequiredParams {
-  required: boolean;
-  types: ('@string' | '@number' | '@boolean' | string)[];
-}
-
-export interface ILoadingIndicators { [name: string]: number; }
-export interface IConversionRates { [currency: string]: number; }
-
-export interface IBackendInfo {
-  hostname: string;
-  gitCommit: string;
-  version: string;
-}

backend/src/routes.ts

@@ -1,810 +1,196 @@
-import config from './config';
-import { Request, Response } from 'express';
 import statistics from './api/statistics';
 import feeApi from './api/fee-api';
-import backendInfo from './api/backend-info';
-import mempoolBlocks from './api/mempool-blocks';
-import mempool from './api/mempool';
-import bisq from './api/bisq/bisq';
-import websocketHandler from './api/websocket-handler';
-import bisqMarket from './api/bisq/markets-api';
-import { RequiredSpec, TransactionExtended } from './mempool.interfaces';
-import { MarketsApiError } from './api/bisq/interfaces';
-import { IEsploraApi } from './api/bitcoin/esplora-api.interface';
-import logger from './logger';
+import projectedBlocks from './api/projected-blocks';
 import bitcoinApi from './api/bitcoin/bitcoin-api-factory';
-import transactionUtils from './api/transaction-utils';
-import blocks from './api/blocks';
-import loadingIndicators from './api/loading-indicators';
-import { Common } from './api/common';
-import bitcoinClient from './api/bitcoin/bitcoin-client';
-import elementsParser from './api/liquid/elements-parser';
 
 class Routes {
-  constructor() {}
+  private cache = {};
 
-  public async get2HStatistics(req: Request, res: Response) {
+  constructor() {
+    this.createCache();
+    setInterval(this.createCache.bind(this), 600000);
+  }
+
+  private async createCache() {
+    this.cache['24h'] = await statistics.$list24H();
+    this.cache['1w'] = await statistics.$list1W();
+    this.cache['1m'] = await statistics.$list1M();
+    this.cache['3m'] = await statistics.$list3M();
+    this.cache['6m'] = await statistics.$list6M();
+    console.log('Statistics cache created');
+  }
+
+  public async get2HStatistics(req, res) {
     const result = await statistics.$list2H();
-    res.json(result);
+    res.send(result);
   }
 
-  public get24HStatistics(req: Request, res: Response) {
-    res.json(statistics.getCache()['24h']);
+  public get24HStatistics(req, res) {
+    res.send(this.cache['24h']);
   }
 
-  public get1WHStatistics(req: Request, res: Response) {
-    res.json(statistics.getCache()['1w']);
+  public get1WHStatistics(req, res) {
+    res.send(this.cache['1w']);
   }
 
-  public get1MStatistics(req: Request, res: Response) {
-    res.json(statistics.getCache()['1m']);
+  public get1MStatistics(req, res) {
+    res.send(this.cache['1m']);
   }
 
-  public get3MStatistics(req: Request, res: Response) {
-    res.json(statistics.getCache()['3m']);
+  public get3MStatistics(req, res) {
+    res.send(this.cache['3m']);
   }
 
-  public get6MStatistics(req: Request, res: Response) {
-    res.json(statistics.getCache()['6m']);
+  public get6MStatistics(req, res) {
+    res.send(this.cache['6m']);
   }
 
-  public get1YStatistics(req: Request, res: Response) {
-    res.json(statistics.getCache()['1y']);
-  }
-
-  public get2YStatistics(req: Request, res: Response) {
-    res.json(statistics.getCache()['2y']);
-  }
-  
-  public get3YStatistics(req: Request, res: Response) {
-    res.json(statistics.getCache()['3y']);
-  }
-
-  public getInitData(req: Request, res: Response) {
-    try {
-      const result = websocketHandler.getInitData();
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getRecommendedFees(req: Request, res: Response) {
-    if (!mempool.isInSync()) {
-      res.statusCode = 503;
-      res.send('Service Unavailable');
-      return;
-    }
+  public async getRecommendedFees(req, res) {
     const result = feeApi.getRecommendedFee();
-    res.json(result);
+    res.send(result);
   }
 
-  public getMempoolBlocks(req: Request, res: Response) {
+  public async $getgetTransactionsForBlock(req, res) {
+    const result = await feeApi.$getTransactionsForBlock(req.params.id);
+    res.send(result);
+  }
+
+  public async getgetTransactionsForProjectedBlock(req, res) {
     try {
-      const result = mempoolBlocks.getMempoolBlocks();
-      res.json(result);
+      const result = await projectedBlocks.getProjectedBlockFeesForBlock(req.params.id);
+      res.send(result);
     } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
+      res.status(500).send(e.message);
     }
   }
 
-  public getTransactionTimes(req: Request, res: Response) {
-    if (!Array.isArray(req.query.txId)) {
-      res.status(500).send('Not an array');
-      return;
-    }
-    const txIds: string[] = [];
-    for (const _txId in req.query.txId) {
-      if (typeof req.query.txId[_txId] === 'string') {
-        txIds.push(req.query.txId[_txId].toString());
-      }
-    }
-
-    const times = mempool.getFirstSeenForTransactions(txIds);
-    res.json(times);
-  }
-
-  public getCpfpInfo(req: Request, res: Response) {
-    if (!/^[a-fA-F0-9]{64}$/.test(req.params.txId)) {
-      res.status(501).send(`Invalid transaction ID.`);
-      return;
-    }
-
-    const tx = mempool.getMempool()[req.params.txId];
-    if (!tx) {
-      res.status(404).send(`Transaction doesn't exist in the mempool.`);
-      return;
-    }
-
-    if (tx.cpfpChecked) {
-      res.json({
-        ancestors: tx.ancestors,
-        bestDescendant: tx.bestDescendant || null,
-      });
-      return;
-    }
-
-    const cpfpInfo = Common.setRelativesAndGetCpfpInfo(tx, mempool.getMempool());
-
-    res.json(cpfpInfo);
-  }
-
-  public getBackendInfo(req: Request, res: Response) {
-    res.json(backendInfo.getBackendInfo());
-  }
-
-  public getBisqStats(req: Request, res: Response) {
-    const result = bisq.getStats();
-    res.json(result);
-  }
-
-  public getBisqTip(req: Request, res: Response) {
-    const result = bisq.getLatestBlockHeight();
-    res.type('text/plain');
-    res.send(result.toString());
-  }
-
-  public getBisqTransaction(req: Request, res: Response) {
-    const result = bisq.getTransaction(req.params.txId);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(404).send('Bisq transaction not found');
-    }
-  }
-
-  public getBisqTransactions(req: Request, res: Response) {
-    const types: string[] = [];
-    req.query.types = req.query.types || [];
-    if (!Array.isArray(req.query.types)) {
-      res.status(500).send('Types is not an array');
-      return;
-    }
-
-    for (const _type in req.query.types) {
-      if (typeof req.query.types[_type] === 'string') {
-        types.push(req.query.types[_type].toString());
-      }
-    }
-
-    const index = parseInt(req.params.index, 10) || 0;
-    const length = parseInt(req.params.length, 10) > 100 ? 100 : parseInt(req.params.length, 10) || 25;
-    const [transactions, count] = bisq.getTransactions(index, length, types);
-    res.header('X-Total-Count', count.toString());
-    res.json(transactions);
-  }
-
-  public getBisqBlock(req: Request, res: Response) {
-    const result = bisq.getBlock(req.params.hash);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(404).send('Bisq block not found');
-    }
-  }
-
-  public getBisqBlocks(req: Request, res: Response) {
-    const index = parseInt(req.params.index, 10) || 0;
-    const length = parseInt(req.params.length, 10) > 100 ? 100 : parseInt(req.params.length, 10) || 25;
-    const [transactions, count] = bisq.getBlocks(index, length);
-    res.header('X-Total-Count', count.toString());
-    res.json(transactions);
-  }
-
-  public getBisqAddress(req: Request, res: Response) {
-    const result = bisq.getAddress(req.params.address.substr(1));
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(404).send('Bisq address not found');
-    }
-  }
-
-  public getBisqMarketCurrencies(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'type': {
-        required: false,
-        types: ['crypto', 'fiat', 'all']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = bisqMarket.getCurrencies(p.type);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketCurrencies error'));
-    }
-  }
-
-  public getBisqMarketDepth(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: true,
-        types: ['@string']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = bisqMarket.getDepth(p.market);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketDepth error'));
-    }
-  }
-
-  public getBisqMarketMarkets(req: Request, res: Response) {
-    const result = bisqMarket.getMarkets();
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketMarkets error'));
-    }
-  }
-
-  public getBisqMarketTrades(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: true,
-        types: ['@string']
-      },
-      'timestamp_from': {
-        required: false,
-        types: ['@number']
-      },
-      'timestamp_to': {
-        required: false,
-        types: ['@number']
-      },
-      'trade_id_to': {
-        required: false,
-        types: ['@string']
-      },
-      'trade_id_from': {
-        required: false,
-        types: ['@string']
-      },
-      'direction': {
-        required: false,
-        types: ['buy', 'sell']
-      },
-      'limit': {
-        required: false,
-        types: ['@number']
-      },
-      'sort': {
-        required: false,
-        types: ['asc', 'desc']
-      }
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = bisqMarket.getTrades(p.market, p.timestamp_from,
-      p.timestamp_to, p.trade_id_from, p.trade_id_to, p.direction, p.limit, p.sort);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketTrades error'));
-    }
-  }
-
-  public getBisqMarketOffers(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: true,
-        types: ['@string']
-      },
-      'direction': {
-        required: false,
-        types: ['buy', 'sell']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = bisqMarket.getOffers(p.market, p.direction);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketOffers error'));
-    }
-  }
-
-  public getBisqMarketVolumes(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: false,
-        types: ['@string']
-      },
-      'interval': {
-        required: false,
-        types: ['minute', 'half_hour', 'hour', 'half_day', 'day', 'week', 'month', 'year', 'auto']
-      },
-      'timestamp_from': {
-        required: false,
-        types: ['@number']
-      },
-      'timestamp_to': {
-        required: false,
-        types: ['@number']
-      },
-      'milliseconds': {
-        required: false,
-        types: ['@boolean']
-      },
-      'timestamp': {
-        required: false,
-        types: ['no', 'yes']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = bisqMarket.getVolumes(p.market, p.timestamp_from, p.timestamp_to, p.interval, p.milliseconds, p.timestamp);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketVolumes error'));
-    }
-  }
-
-  public getBisqMarketHloc(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: true,
-        types: ['@string']
-      },
-      'interval': {
-        required: false,
-        types: ['minute', 'half_hour', 'hour', 'half_day', 'day', 'week', 'month', 'year', 'auto']
-      },
-      'timestamp_from': {
-        required: false,
-        types: ['@number']
-      },
-      'timestamp_to': {
-        required: false,
-        types: ['@number']
-      },
-      'milliseconds': {
-        required: false,
-        types: ['@boolean']
-      },
-      'timestamp': {
-        required: false,
-        types: ['no', 'yes']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = bisqMarket.getHloc(p.market, p.interval, p.timestamp_from, p.timestamp_to, p.milliseconds, p.timestamp);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketHloc error'));
-    }
-  }
-
-  public getBisqMarketTicker(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: false,
-        types: ['@string']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = bisqMarket.getTicker(p.market);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketTicker error'));
-    }
-  }
-
-  public getBisqMarketVolumes7d(req: Request, res: Response) {
-    const result = bisqMarket.getVolumesByTime(604800);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketVolumes7d error'));
-    }
-  }
-
-  private parseRequestParameters(requestParams: object, params: RequiredSpec): { [name: string]: any; } {
-    const final = {};
-    for (const i in params) {
-      if (params.hasOwnProperty(i)) {
-        if (params[i].required && requestParams[i] === undefined) {
-          return { error: i + ' parameter missing'};
-        }
-        if (typeof requestParams[i] === 'string') {
-          const str = (requestParams[i] || '').toString().toLowerCase();
-          if (params[i].types.indexOf('@number') > -1) {
-            const number = parseInt((str).toString(), 10);
-            final[i] = number;
-          } else if (params[i].types.indexOf('@string') > -1) {
-            final[i] = str;
-          } else if (params[i].types.indexOf('@boolean') > -1) {
-            final[i] = str === 'true' || str === 'yes';
-          } else if (params[i].types.indexOf(str) > -1) {
-            final[i] = str;
-          } else {
-            return { error: i + ' parameter invalid'};
-          }
-        } else if (typeof requestParams[i] === 'number') {
-          final[i] = requestParams[i];
-        }
-      }
-    }
-    return final;
-  }
-
-  private getBisqMarketErrorResponse(message: string): MarketsApiError {
-    return {
-      'success': 0,
-      'error': message
-    };
-  }
-
-  public async getTransaction(req: Request, res: Response) {
+  public async getProjectedBlocks(req, res) {
     try {
-      const transaction = await transactionUtils.$getTransactionExtended(req.params.txId, true);
-      res.json(transaction);
+      let txId: string | undefined;
+      if (req.query.txId && /^[a-fA-F0-9]{64}$/.test(req.query.txId)) {
+        txId = req.query.txId;
+      }
+      const result = await projectedBlocks.getProjectedBlocks(txId, 6);
+      res.send(result);
     } catch (e) {
-      let statusCode = 500;
-      if (e instanceof Error && e instanceof Error && e.message && e.message.indexOf('No such mempool or blockchain transaction') > -1) {
-        statusCode = 404;
-      }
-      res.status(statusCode).send(e instanceof Error ? e.message : e);
+      res.status(500).send(e.message);
     }
   }
 
-  public async getRawTransaction(req: Request, res: Response) {
+  public async getBlocks(req, res) {
     try {
-      const transaction: IEsploraApi.Transaction = await bitcoinApi.$getRawTransaction(req.params.txId, true);
-      res.setHeader('content-type', 'text/plain');
-      res.send(transaction.hex);
-    } catch (e) {
-      let statusCode = 500;
-      if (e instanceof Error && e.message && e.message.indexOf('No such mempool or blockchain transaction') > -1) {
-        statusCode = 404;
-      }
-      res.status(statusCode).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getTransactionStatus(req: Request, res: Response) {
-    try {
-      const transaction = await transactionUtils.$getTransactionExtended(req.params.txId, true);
-      res.json(transaction.status);
-    } catch (e) {
-      let statusCode = 500;
-      if (e instanceof Error && e.message && e.message.indexOf('No such mempool or blockchain transaction') > -1) {
-        statusCode = 404;
-      }
-      res.status(statusCode).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getBlock(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$getBlock(req.params.hash);
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getBlockHeader(req: Request, res: Response) {
-    try {
-      const blockHeader = await bitcoinApi.$getBlockHeader(req.params.hash);
-      res.setHeader('content-type', 'text/plain');
-      res.send(blockHeader);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getBlocks(req: Request, res: Response) {
-    try {
-      loadingIndicators.setProgress('blocks', 0);
-
-      const returnBlocks: IEsploraApi.Block[] = [];
-      const fromHeight = parseInt(req.params.height, 10) || blocks.getCurrentBlockHeight();
-
-      // Check if block height exist in local cache to skip the hash lookup
-      const blockByHeight = blocks.getBlocks().find((b) => b.height === fromHeight);
-      let startFromHash: string | null = null;
-      if (blockByHeight) {
-        startFromHash = blockByHeight.id;
+      let result: string;
+      if (req.params.height) {
+        result = await bitcoinApi.getBlocksFromHeight(req.params.height);
       } else {
-        startFromHash = await bitcoinApi.$getBlockHash(fromHeight);
+        result = await bitcoinApi.getBlocks();
       }
+      res.send(result);
+    } catch (e) {
+      res.status(500).send(e.message);
+    }
+  }
 
-      let nextHash = startFromHash;
-      for (let i = 0; i < 10; i++) {
-        const localBlock = blocks.getBlocks().find((b) => b.id === nextHash);
-        if (localBlock) {
-          returnBlocks.push(localBlock);
-          nextHash = localBlock.previousblockhash;
+  public async getRawTransaction(req, res) {
+    try {
+      const result = await bitcoinApi.getRawTransaction(req.params.id);
+      res.send(result);
+    } catch (e) {
+      if (e.response) {
+        res.status(e.response.status).send(e.response.data);
+      } else {
+        res.status(500, e.message);
+      }
+    }
+  }
+
+  public async getBlock(req, res) {
+    try {
+      const result = await bitcoinApi.getBlock(req.params.hash);
+      res.send(result);
+    } catch (e) {
+      if (e.response) {
+        res.status(e.response.status).send(e.response.data);
+      } else {
+        res.status(500, e.message);
+      }
+    }
+  }
+
+  public async getBlockTransactions(req, res) {
+    try {
+      const result = await bitcoinApi.getBlockTransactions(req.params.hash);
+      res.send(result);
+    } catch (e) {
+      if (e.response) {
+        res.status(e.response.status).send(e.response.data);
+      } else {
+        if (e.response) {
+          res.status(e.response.status).send(e.response.data);
         } else {
-          const block = await bitcoinApi.$getBlock(nextHash);
-          returnBlocks.push(block);
-          nextHash = block.previousblockhash;
-        }
-        loadingIndicators.setProgress('blocks', i / 10 * 100);
-      }
-
-      res.json(returnBlocks);
-    } catch (e) {
-      loadingIndicators.setProgress('blocks', 100);
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getBlockTransactions(req: Request, res: Response) {
-    try {
-      loadingIndicators.setProgress('blocktxs-' + req.params.hash, 0);
-
-      const txIds = await bitcoinApi.$getTxIdsForBlock(req.params.hash);
-      const transactions: TransactionExtended[] = [];
-      const startingIndex = Math.max(0, parseInt(req.params.index || '0', 10));
-
-      const endIndex = Math.min(startingIndex + 10, txIds.length);
-      for (let i = startingIndex; i < endIndex; i++) {
-        try {
-          const transaction = await transactionUtils.$getTransactionExtended(txIds[i], true);
-          transactions.push(transaction);
-          loadingIndicators.setProgress('blocktxs-' + req.params.hash, (i + 1) / endIndex * 100);
-        } catch (e) {
-          logger.debug('getBlockTransactions error: ' + (e instanceof Error ? e.message : e));
+          res.status(500, e.message);
         }
       }
-      res.json(transactions);
-    } catch (e) {
-      loadingIndicators.setProgress('blocktxs-' + req.params.hash, 100);
-      res.status(500).send(e instanceof Error ? e.message : e);
     }
   }
 
-  public async getBlockHeight(req: Request, res: Response) {
+  public async getBlockTransactionsFromIndex(req, res) {
     try {
-      const blockHash = await bitcoinApi.$getBlockHash(parseInt(req.params.height, 10));
-      res.send(blockHash);
+      const result = await bitcoinApi.getBlockTransactionsFromIndex(req.params.hash, req.params.index);
+      res.send(result);
     } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getAddress(req: Request, res: Response) {
-    if (config.MEMPOOL.BACKEND === 'none') {
-      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
-      return;
-    }
-
-    try {
-      const addressData = await bitcoinApi.$getAddress(req.params.address);
-      res.json(addressData);
-    } catch (e) {
-      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
-        return res.status(413).send(e instanceof Error ? e.message : e);
-      }
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getAddressTransactions(req: Request, res: Response) {
-    if (config.MEMPOOL.BACKEND === 'none') {
-      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
-      return;
-    }
-
-    try {
-      const transactions = await bitcoinApi.$getAddressTransactions(req.params.address, req.params.txId);
-      res.json(transactions);
-    } catch (e) {
-      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
-        return res.status(413).send(e instanceof Error ? e.message : e);
-      }
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getAdressTxChain(req: Request, res: Response) {
-    res.status(501).send('Not implemented');
-  }
-
-  public async getAddressPrefix(req: Request, res: Response) {
-    try {
-      const blockHash = await bitcoinApi.$getAddressPrefix(req.params.prefix);
-      res.send(blockHash);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getRecentMempoolTransactions(req: Request, res: Response) {
-    const latestTransactions = Object.entries(mempool.getMempool())
-      .sort((a, b) => (b[1].firstSeen || 0) - (a[1].firstSeen || 0))
-      .slice(0, 10).map((tx) => Common.stripTransaction(tx[1]));
-
-    res.json(latestTransactions);
-  }
-
-  public async getMempool(req: Request, res: Response) {
-    res.status(501).send('Not implemented');
-  }
-
-  public async getMempoolTxIds(req: Request, res: Response) {
-    try {
-      const rawMempool = await bitcoinApi.$getRawMempool();
-      res.send(rawMempool);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getBlockTipHeight(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$getBlockHeightTip();
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async getTxIdsForBlock(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$getTxIdsForBlock(req.params.hash);
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async validateAddress(req: Request, res: Response) {
-    try {
-      const result = await bitcoinClient.validateAddress(req.params.address);
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public getTransactionOutspends(req: Request, res: Response) {
-    res.status(501).send('Not implemented');
-  }
-
-  public getDifficultyChange(req: Request, res: Response) {
-    try {
-      const DATime = blocks.getLastDifficultyAdjustmentTime();
-      const previousRetarget = blocks.getPreviousDifficultyRetarget();
-      const blockHeight = blocks.getCurrentBlockHeight();
-
-      const now = new Date().getTime() / 1000;
-      const diff = now - DATime;
-      const blocksInEpoch = blockHeight % 2016;
-      const progressPercent = (blocksInEpoch >= 0) ? blocksInEpoch / 2016 * 100 : 100;
-      const remainingBlocks = 2016 - blocksInEpoch;
-      const nextRetargetHeight = blockHeight + remainingBlocks;
-
-      let difficultyChange = 0;
-      if (remainingBlocks < 1870) {
-        if (blocksInEpoch > 0) {
-          difficultyChange = (600 / (diff / blocksInEpoch ) - 1) * 100;
-        }
-        if (difficultyChange > 300) {
-          difficultyChange = 300;
-        }
-        if (difficultyChange < -75) {
-          difficultyChange = -75;
-        }
-      }
-
-      const timeAvgDiff = difficultyChange * 0.1;
-
-      let timeAvgMins = 10;
-      if (timeAvgDiff > 0) {
-        timeAvgMins -= Math.abs(timeAvgDiff);
+      if (e.response) {
+        res.status(e.response.status).send(e.response.data);
       } else {
-        timeAvgMins += Math.abs(timeAvgDiff);
+        if (e.response) {
+          res.status(e.response.status).send(e.response.data);
+        } else {
+          res.status(500, e.message);
+        }
       }
-
-      const timeAvg = timeAvgMins * 60;
-      const remainingTime =  remainingBlocks * timeAvg;
-      const estimatedRetargetDate = remainingTime + now;
-
-      const result = {
-        progressPercent,
-        difficultyChange,
-        estimatedRetargetDate,
-        remainingBlocks,
-        remainingTime,
-        previousRetarget,
-        nextRetargetHeight,
-        timeAvg,
-      };
-      res.json(result);
-
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
     }
   }
 
-  public async $getElementsPegsByMonth(req: Request, res: Response) {
+  public async getAddress(req, res) {
     try {
-      const pegs = await elementsParser.$getPegDataByMonth();
-      res.json(pegs);
+      const result = await bitcoinApi.getAddress(req.params.address);
+      res.send(result);
     } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async $postTransaction(req: Request, res: Response) {
-    res.setHeader('content-type', 'text/plain');
-    try {
-      let rawTx;
-      if (typeof req.body === 'object') {
-        rawTx = Object.keys(req.body)[0];
+      if (e.response) {
+        res.status(e.response.status).send(e.response.data);
       } else {
-        rawTx = req.body;
+        if (e.response) {
+          res.status(e.response.status).send(e.response.data);
+        } else {
+          res.status(500, e.message);
+        }
       }
-      const txIdResult = await bitcoinApi.$sendRawTransaction(rawTx);
-      res.send(txIdResult);
-    } catch (e: any) {
-      res.status(400).send(e.message && e.code ? 'sendrawtransaction RPC error: ' + JSON.stringify({ code: e.code, message: e.message })
-        : (e.message || 'Error'));
     }
   }
 
-  public async $postTransactionForm(req: Request, res: Response) {
-    res.setHeader('content-type', 'text/plain');
-    const matches = /tx=([a-z0-9]+)/.exec(req.body);
-    let txHex = '';
-    if (matches && matches[1]) {
-      txHex = matches[1];
-    }
+  public async getAddressTransactions(req, res) {
     try {
-      const txIdResult = await bitcoinClient.sendRawTransaction(txHex);
-      res.send(txIdResult);
-    } catch (e: any) {
-      res.status(400).send(e.message && e.code ? 'sendrawtransaction RPC error: ' + JSON.stringify({ code: e.code, message: e.message })
-        : (e.message || 'Error'));
+      const result = await bitcoinApi.getAddressTransactions(req.params.address);
+      res.send(result);
+    } catch (e) {
+      if (e.response) {
+        res.status(e.response.status).send(e.response.data);
+      } else {
+        res.status(500, e.message);
+      }
+    }
+  }
+
+  public async getAddressTransactionsFromTxid(req, res) {
+    try {
+      const result = await bitcoinApi.getAddressTransactionsFromLastSeenTxid(req.params.address, req.params.txid);
+      res.send(result);
+    } catch (e) {
+      if (e.response) {
+        res.status(e.response.status).send(e.response.data);
+      } else {
+        res.status(500, e.message);
+      }
     }
   }
 }

backend/tsconfig.json

@@ -1,8 +1,7 @@
 {
   "compilerOptions": {
     "module": "commonjs",
-    "target": "esnext",
-    "lib": ["es2019", "dom"],
+    "target": "es2015",
     "strict": true,
     "noImplicitAny": false,
     "sourceMap": false,

backend/tslint.json

@@ -12,7 +12,7 @@
       "severity": "warn"
     },
     "eofline": true,
-    "forin": false,
+    "forin": true,
     "import-blacklist": [
       true,
       "rxjs",

docker/README.md

@@ -1,101 +0,0 @@
-# Docker
-
-## Initialization
-
-In an empty dir create 2 sub-dirs
-
-```bash
-mkdir -p data mysql/data mysql/db-scripts
-```
-
-In the `mysql/db-scripts` sub-dir add the `mariadb-structure.sql` file from the mempool repo
-
-Your dir should now look like that:
-
-```bash
-$ls -R
-.:
-data mysql
-
-./data:
-
-./mysql:
-data  db-scripts
-
-./mysql/data:
-
-./mysql/db-scripts:
-mariadb-structure.sql
-```
-
-In the main dir add the following `docker-compose.yml`
-
-```bash
-version: "3.7"
-
-services:
-  web:
-    image: mempool/frontend:latest
-    user: "1000:1000"
-    restart: on-failure
-    stop_grace_period: 1m
-    command: "./wait-for db:3306 --timeout=720 -- nginx -g 'daemon off;'"
-    ports:
-      - 80:8080
-    environment:
-      FRONTEND_HTTP_PORT: "8080"
-      BACKEND_MAINNET_HTTP_HOST: "api"
-  api:
-    image: mempool/backend:latest
-    user: "1000:1000"
-    restart: on-failure
-    stop_grace_period: 1m
-    command: "./wait-for-it.sh db:3306 --timeout=720 --strict -- ./start.sh"
-    volumes:
-      - ./data:/backend/cache
-    environment:
-      RPC_HOST: "127.0.0.1"
-      RPC_PORT: "8332"
-      RPC_USER: "mempool"
-      RPC_PASS: "mempool"
-      ELECTRUM_HOST: "127.0.0.1"
-      ELECTRUM_PORT: "50002"
-      ELECTRUM_TLS: "false"
-      MYSQL_HOST: "db"
-      MYSQL_PORT: "3306"
-      MYSQL_DATABASE: "mempool"
-      MYSQL_USER: "mempool"
-      MYSQL_PASS: "mempool"
-      BACKEND_MAINNET_HTTP_PORT: "8999"
-      CACHE_DIR: "/backend/cache"
-      MEMPOOL_CLEAR_PROTECTION_MINUTES: "20"
-  db:
-    image: mariadb:10.5.8
-    user: "1000:1000"
-    restart: on-failure
-    stop_grace_period: 1m
-    volumes:
-      - ./mysql/data:/var/lib/mysql
-      - ./mysql/db-scripts:/docker-entrypoint-initdb.d
-    environment:
-      MYSQL_DATABASE: "mempool"
-      MYSQL_USER: "mempool"
-      MYSQL_PASSWORD: "mempool"
-      MYSQL_ROOT_PASSWORD: "admin"
-
-```
-
-You can update all the environment variables inside the API container, especially the RPC and ELECTRUM ones
-
-## Run it
-
-To run our docker-compose use the following cmd:
-
-```bash
-docker-compose up
-```
-
-If everything went okay you should see the beautiful mempool :grin:
-
-If you get stuck on "loading blocks", this means the websocket can't connect.
-Check your nginx proxy setup, firewalls, etc. and open an issue if you need help.

docker/backend/Dockerfile

@@ -1,26 +0,0 @@
-FROM node:16.10.0-buster-slim AS builder
-
-WORKDIR /build
-COPY . .
-
-RUN apt-get update
-RUN apt-get install -y build-essential python3 pkg-config
-RUN npm install
-RUN npm run build
-
-FROM node:16.10.0-buster-slim
-
-WORKDIR /backend
-
-COPY --from=builder /build/ .
-
-RUN chmod +x /backend/start.sh
-RUN chmod +x /backend/wait-for-it.sh
-
-RUN chown -R 1000:1000 /backend && chmod -R 755 /backend
-
-USER 1000
-
-EXPOSE 8999
-
-CMD ["/backend/start.sh"]

docker/backend/mempool-config.json

@@ -1,38 +0,0 @@
-{
-  "MEMPOOL": {
-    "NETWORK": "mainnet",
-    "BACKEND": "electrum",
-    "HTTP_PORT": __MEMPOOL_BACKEND_MAINNET_HTTP_PORT__,
-    "SPAWN_CLUSTER_PROCS": 0,
-    "API_URL_PREFIX": "/api/v1/",
-    "POLL_RATE_MS": 2000,
-    "CACHE_DIR": "__MEMPOOL_BACKEND_MAINNET_CACHE_DIR__",
-    "CLEAR_PROTECTION_MINUTES": __MEMPOOL_BACKEND_CLEAR_PROTECTION_MINUTES__
-  },
-  "CORE_RPC": {
-    "HOST": "__BITCOIN_MAINNET_RPC_HOST__",
-    "PORT": __BITCOIN_MAINNET_RPC_PORT__,
-    "USERNAME": "__BITCOIN_MAINNET_RPC_USER__",
-    "PASSWORD": "__BITCOIN_MAINNET_RPC_PASS__"
-  },
-  "ELECTRUM": {
-    "HOST": "__ELECTRUM_MAINNET_HTTP_HOST__",
-    "PORT": __ELECTRUM_MAINNET_HTTP_PORT__,
-    "TLS_ENABLED": __ELECTRUM_MAINNET_TLS_ENABLED__
-  },
-  "ESPLORA": {
-    "REST_API_URL": "http://127.0.0.1:3000"
-  },
-  "DATABASE": {
-    "ENABLED": true,
-    "HOST": "__MYSQL_HOST__",
-    "PORT": __MYSQL_PORT__,
-    "DATABASE": "__MYSQL_DATABASE__",
-    "USERNAME": "__MYSQL_USERNAME__",
-    "PASSWORD": "__MYSQL_PASSWORD__"
-  },
-  "STATISTICS": {
-    "ENABLED": true,
-    "TX_PER_SECOND_SAMPLE_PERIOD": 150
-  }
-}

docker/backend/start.sh

@@ -1,41 +0,0 @@
-#!/bin/sh
-
-#MEMPOOL
-__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__=${BACKEND_MAINNET_HTTP_PORT:=8999}
-__MEMPOOL_BACKEND_MAINNET_CACHE_DIR__=${CACHE_DIR:=./cache}
-__MEMPOOL_BACKEND_CLEAR_PROTECTION_MINUTES__=${MEMPOOL_CLEAR_PROTECTION_MINUTES:=20}
-# BITCOIN
-__BITCOIN_MAINNET_RPC_HOST__=${RPC_HOST:=127.0.0.1}
-__BITCOIN_MAINNET_RPC_PORT__=${RPC_PORT:=8332}
-__BITCOIN_MAINNET_RPC_USER__=${RPC_USER:=mempool}
-__BITCOIN_MAINNET_RPC_PASS__=${RPC_PASS:=mempool}
-# ELECTRUM
-__ELECTRUM_MAINNET_HTTP_HOST__=${ELECTRUM_HOST:=127.0.0.1}
-__ELECTRUM_MAINNET_HTTP_PORT__=${ELECTRUM_PORT:=50002} # 50001?
-__ELECTRUM_MAINNET_TLS_ENABLED__=${ELECTRUM_TLS:=false}
-# MYSQL
-__MYSQL_HOST__=${MYSQL_HOST:=127.0.0.1}
-__MYSQL_PORT__=${MYSQL_PORT:=3306}
-__MYSQL_DATABASE__=${MYSQL_DATABASE:=mempool}
-__MYSQL_USERNAME__=${MYSQL_USER:=mempool}
-__MYSQL_PASSWORD__=${MYSQL_PASS:=mempool}
-
-mkdir -p "${__MEMPOOL_BACKEND_MAINNET_CACHE_DIR__}"
-
-sed -i "s/__BITCOIN_MAINNET_RPC_HOST__/${__BITCOIN_MAINNET_RPC_HOST__}/g" mempool-config.json
-sed -i "s/__BITCOIN_MAINNET_RPC_PORT__/${__BITCOIN_MAINNET_RPC_PORT__}/g" mempool-config.json
-sed -i "s/__BITCOIN_MAINNET_RPC_USER__/${__BITCOIN_MAINNET_RPC_USER__}/g" mempool-config.json
-sed -i "s/__BITCOIN_MAINNET_RPC_PASS__/${__BITCOIN_MAINNET_RPC_PASS__}/g" mempool-config.json
-sed -i "s/__ELECTRUM_MAINNET_HTTP_HOST__/${__ELECTRUM_MAINNET_HTTP_HOST__}/g" mempool-config.json
-sed -i "s/__ELECTRUM_MAINNET_HTTP_PORT__/${__ELECTRUM_MAINNET_HTTP_PORT__}/g" mempool-config.json
-sed -i "s/__ELECTRUM_MAINNET_TLS_ENABLED__/${__ELECTRUM_MAINNET_TLS_ENABLED__}/g" mempool-config.json
-sed -i "s/__MYSQL_HOST__/${__MYSQL_HOST__}/g" mempool-config.json
-sed -i "s/__MYSQL_PORT__/${__MYSQL_PORT__}/g" mempool-config.json
-sed -i "s/__MYSQL_DATABASE__/${__MYSQL_DATABASE__}/g" mempool-config.json
-sed -i "s/__MYSQL_USERNAME__/${__MYSQL_USERNAME__}/g" mempool-config.json
-sed -i "s/__MYSQL_PASSWORD__/${__MYSQL_PASSWORD__}/g" mempool-config.json
-sed -i "s!__MEMPOOL_BACKEND_MAINNET_CACHE_DIR__!${__MEMPOOL_BACKEND_MAINNET_CACHE_DIR__}!g" mempool-config.json
-sed -i "s/__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__/${__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__}/g" mempool-config.json
-sed -i "s/__MEMPOOL_BACKEND_CLEAR_PROTECTION_MINUTES__/${__MEMPOOL_BACKEND_CLEAR_PROTECTION_MINUTES__}/g" mempool-config.json
-
-node /backend/dist/index.js

docker/backend/wait-for-it.sh

@@ -1,182 +0,0 @@
-#!/usr/bin/env bash
-# Use this script to test if a given TCP host/port are available
-
-WAITFORIT_cmdname=${0##*/}
-
-echoerr() { if [[ $WAITFORIT_QUIET -ne 1 ]]; then echo "$@" 1>&2; fi }
-
-usage()
-{
-    cat << USAGE >&2
-Usage:
-    $WAITFORIT_cmdname host:port [-s] [-t timeout] [-- command args]
-    -h HOST | --host=HOST       Host or IP under test
-    -p PORT | --port=PORT       TCP port under test
-                                Alternatively, you specify the host and port as host:port
-    -s | --strict               Only execute subcommand if the test succeeds
-    -q | --quiet                Don't output any status messages
-    -t TIMEOUT | --timeout=TIMEOUT
-                                Timeout in seconds, zero for no timeout
-    -- COMMAND ARGS             Execute command with args after the test finishes
-USAGE
-    exit 1
-}
-
-wait_for()
-{
-    if [[ $WAITFORIT_TIMEOUT -gt 0 ]]; then
-        echoerr "$WAITFORIT_cmdname: waiting $WAITFORIT_TIMEOUT seconds for $WAITFORIT_HOST:$WAITFORIT_PORT"
-    else
-        echoerr "$WAITFORIT_cmdname: waiting for $WAITFORIT_HOST:$WAITFORIT_PORT without a timeout"
-    fi
-    WAITFORIT_start_ts=$(date +%s)
-    while :
-    do
-        if [[ $WAITFORIT_ISBUSY -eq 1 ]]; then
-            nc -z $WAITFORIT_HOST $WAITFORIT_PORT
-            WAITFORIT_result=$?
-        else
-            (echo -n > /dev/tcp/$WAITFORIT_HOST/$WAITFORIT_PORT) >/dev/null 2>&1
-            WAITFORIT_result=$?
-        fi
-        if [[ $WAITFORIT_result -eq 0 ]]; then
-            WAITFORIT_end_ts=$(date +%s)
-            echoerr "$WAITFORIT_cmdname: $WAITFORIT_HOST:$WAITFORIT_PORT is available after $((WAITFORIT_end_ts - WAITFORIT_start_ts)) seconds"
-            break
-        fi
-        sleep 1
-    done
-    return $WAITFORIT_result
-}
-
-wait_for_wrapper()
-{
-    # In order to support SIGINT during timeout: http://unix.stackexchange.com/a/57692
-    if [[ $WAITFORIT_QUIET -eq 1 ]]; then
-        timeout $WAITFORIT_BUSYTIMEFLAG $WAITFORIT_TIMEOUT $0 --quiet --child --host=$WAITFORIT_HOST --port=$WAITFORIT_PORT --timeout=$WAITFORIT_TIMEOUT &
-    else
-        timeout $WAITFORIT_BUSYTIMEFLAG $WAITFORIT_TIMEOUT $0 --child --host=$WAITFORIT_HOST --port=$WAITFORIT_PORT --timeout=$WAITFORIT_TIMEOUT &
-    fi
-    WAITFORIT_PID=$!
-    trap "kill -INT -$WAITFORIT_PID" INT
-    wait $WAITFORIT_PID
-    WAITFORIT_RESULT=$?
-    if [[ $WAITFORIT_RESULT -ne 0 ]]; then
-        echoerr "$WAITFORIT_cmdname: timeout occurred after waiting $WAITFORIT_TIMEOUT seconds for $WAITFORIT_HOST:$WAITFORIT_PORT"
-    fi
-    return $WAITFORIT_RESULT
-}
-
-# process arguments
-while [[ $# -gt 0 ]]
-do
-    case "$1" in
-        *:* )
-        WAITFORIT_hostport=(${1//:/ })
-        WAITFORIT_HOST=${WAITFORIT_hostport[0]}
-        WAITFORIT_PORT=${WAITFORIT_hostport[1]}
-        shift 1
-        ;;
-        --child)
-        WAITFORIT_CHILD=1
-        shift 1
-        ;;
-        -q | --quiet)
-        WAITFORIT_QUIET=1
-        shift 1
-        ;;
-        -s | --strict)
-        WAITFORIT_STRICT=1
-        shift 1
-        ;;
-        -h)
-        WAITFORIT_HOST="$2"
-        if [[ $WAITFORIT_HOST == "" ]]; then break; fi
-        shift 2
-        ;;
-        --host=*)
-        WAITFORIT_HOST="${1#*=}"
-        shift 1
-        ;;
-        -p)
-        WAITFORIT_PORT="$2"
-        if [[ $WAITFORIT_PORT == "" ]]; then break; fi
-        shift 2
-        ;;
-        --port=*)
-        WAITFORIT_PORT="${1#*=}"
-        shift 1
-        ;;
-        -t)
-        WAITFORIT_TIMEOUT="$2"
-        if [[ $WAITFORIT_TIMEOUT == "" ]]; then break; fi
-        shift 2
-        ;;
-        --timeout=*)
-        WAITFORIT_TIMEOUT="${1#*=}"
-        shift 1
-        ;;
-        --)
-        shift
-        WAITFORIT_CLI=("$@")
-        break
-        ;;
-        --help)
-        usage
-        ;;
-        *)
-        echoerr "Unknown argument: $1"
-        usage
-        ;;
-    esac
-done
-
-if [[ "$WAITFORIT_HOST" == "" || "$WAITFORIT_PORT" == "" ]]; then
-    echoerr "Error: you need to provide a host and port to test."
-    usage
-fi
-
-WAITFORIT_TIMEOUT=${WAITFORIT_TIMEOUT:-15}
-WAITFORIT_STRICT=${WAITFORIT_STRICT:-0}
-WAITFORIT_CHILD=${WAITFORIT_CHILD:-0}
-WAITFORIT_QUIET=${WAITFORIT_QUIET:-0}
-
-# Check to see if timeout is from busybox?
-WAITFORIT_TIMEOUT_PATH=$(type -p timeout)
-WAITFORIT_TIMEOUT_PATH=$(realpath $WAITFORIT_TIMEOUT_PATH 2>/dev/null || readlink -f $WAITFORIT_TIMEOUT_PATH)
-
-WAITFORIT_BUSYTIMEFLAG=""
-if [[ $WAITFORIT_TIMEOUT_PATH =~ "busybox" ]]; then
-    WAITFORIT_ISBUSY=1
-    # Check if busybox timeout uses -t flag
-    # (recent Alpine versions don't support -t anymore)
-    if timeout &>/dev/stdout | grep -q -e '-t '; then
-        WAITFORIT_BUSYTIMEFLAG="-t"
-    fi
-else
-    WAITFORIT_ISBUSY=0
-fi
-
-if [[ $WAITFORIT_CHILD -gt 0 ]]; then
-    wait_for
-    WAITFORIT_RESULT=$?
-    exit $WAITFORIT_RESULT
-else
-    if [[ $WAITFORIT_TIMEOUT -gt 0 ]]; then
-        wait_for_wrapper
-        WAITFORIT_RESULT=$?
-    else
-        wait_for
-        WAITFORIT_RESULT=$?
-    fi
-fi
-
-if [[ $WAITFORIT_CLI != "" ]]; then
-    if [[ $WAITFORIT_RESULT -ne 0 && $WAITFORIT_STRICT -eq 1 ]]; then
-        echoerr "$WAITFORIT_cmdname: strict mode, refusing to execute subprocess"
-        exit $WAITFORIT_RESULT
-    fi
-    exec "${WAITFORIT_CLI[@]}"
-else
-    exit $WAITFORIT_RESULT
-fi

docker/docker-compose.yml

@@ -1,67 +0,0 @@
-version: "3.7"
-
-services:
-
-  electrum:
-    build:
-      context: .
-      dockerfile: docker/electrum/Dockerfile
-    user: "1000:1000"
-    restart: on-failure
-    command: ""
-    ports:
-      - 50001:50001
-      - 50002:50002
-      - 4224:4224
-      - 8332:8332
-    environment:
-      ELECTRUM: "electrum"
-      # add electrs configs
-  web:
-    image: mempool/frontend:latest
-    user: "1000:1000"
-    restart: on-failure
-    stop_grace_period: 1m
-    command: "./wait-for db:3306 --timeout=720 -- nginx -g 'daemon off;'"
-    ports:
-      - 80:8080
-    environment:
-      FRONTEND_HTTP_PORT: "8080"
-      BACKEND_MAINNET_HTTP_HOST: "api"
-  api:
-    image: mempool/backend:latest
-    user: "1000:1000"
-    restart: on-failure
-    stop_grace_period: 1m
-    command: "./wait-for-it.sh db:3306 --timeout=720 --strict -- ./start.sh"
-    volumes:
-      - ./data:/backend/cache
-    environment:
-      RPC_HOST: "127.0.0.1"
-      RPC_PORT: "8332"
-      RPC_USER: "mempool"
-      RPC_PASS: "mempool"
-      ELECTRUM_HOST: "127.0.0.1"
-      ELECTRUM_PORT: "50002"
-      ELECTRUM_TLS: "false"
-      MYSQL_HOST: "db"
-      MYSQL_PORT: "3306"
-      MYSQL_DATABASE: "mempool"
-      MYSQL_USER: "mempool"
-      MYSQL_PASS: "mempool"
-      BACKEND_MAINNET_HTTP_PORT: "8999"
-      CACHE_DIR: "/backend/cache"
-      MEMPOOL_CLEAR_PROTECTION_MINUTES: "20"
-  db:
-    image: mariadb:10.5.8
-    user: "1000:1000"
-    restart: on-failure
-    stop_grace_period: 1m
-    volumes:
-      - ./mysql/data:/var/lib/mysql
-      - ./mysql/db-scripts:/docker-entrypoint-initdb.d
-    environment:
-      MYSQL_DATABASE: "mempool"
-      MYSQL_USER: "mempool"
-      MYSQL_PASSWORD: "mempool"
-      MYSQL_ROOT_PASSWORD: "admin"

docker/electrum/Dockerfile

@@ -1,32 +0,0 @@
-FROM ubuntu:18.04
-MAINTAINER mempool.space developers
-EXPOSE 50002
-
-# runs as UID 1000 GID 1000 inside the container
-
-ENV VERSION 4.0.9
-RUN set -x \
-        && apt-get update \
-	&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends gpg gpg-agent dirmngr \
-	&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends wget xpra python3-pyqt5 python3-wheel python3-pip python3-setuptools libsecp256k1-0 libsecp256k1-dev python3-numpy python3-dev build-essential \
-	&& wget -O /tmp/Electrum-${VERSION}.tar.gz https://download.electrum.org/${VERSION}/Electrum-${VERSION}.tar.gz \
-	&& wget -O /tmp/Electrum-${VERSION}.tar.gz.asc https://download.electrum.org/${VERSION}/Electrum-${VERSION}.tar.gz.asc \
-	&& gpg --keyserver keys.gnupg.net --recv-keys 6694D8DE7BE8EE5631BED9502BD5824B7F9470E6 \
-	&& gpg --verify /tmp/Electrum-${VERSION}.tar.gz.asc /tmp/Electrum-${VERSION}.tar.gz \
-	&& pip3 install /tmp/Electrum-${VERSION}.tar.gz \
-	&& test -f /usr/local/bin/electrum \
-	&& rm -vrf /tmp/Electrum-${VERSION}.tar.gz /tmp/Electrum-${VERSION}.tar.gz.asc ${HOME}/.gnupg \
-	&& apt-get purge --autoremove -y python3-wheel python3-pip python3-setuptools python3-dev build-essential libsecp256k1-dev curl gpg gpg-agent dirmngr \
-	&& apt-get clean && rm -rf /var/lib/apt/lists/* \
-	&& useradd -d /home/mempool -m mempool \
-	&& mkdir /electrum \
-	&& ln -s /electrum /home/mempool/.electrum \
-	&& chown mempool:mempool /electrum
-
-USER mempool
-ENV HOME /home/mempool
-WORKDIR /home/mempool
-VOLUME /electrum
-
-CMD ["/usr/bin/xpra", "start", ":100", "--start-child=/usr/local/bin/electrum", "--bind-tcp=0.0.0.0:50002","--daemon=yes", "--notifications=no", "--mdns=no", "--pulseaudio=no", "--html=off", "--speaker=disabled", "--microphone=disabled", "--webcam=no", "--printing=no", "--dbus-launch=", "--exit-with-children"]
-ENTRYPOINT ["electrum"]

docker/frontend/Dockerfile

@@ -1,38 +0,0 @@
-FROM node:16.10.0-buster-slim AS builder
-
-ARG commitHash
-ENV DOCKER_COMMIT_HASH=${commitHash}
-ENV CYPRESS_INSTALL_BINARY=0
-
-WORKDIR /build
-COPY . .
-RUN apt-get update
-RUN apt-get install -y build-essential rsync
-RUN npm i
-RUN npm run build
-
-FROM nginx:1.17.8-alpine
-
-WORKDIR /patch
-
-COPY --from=builder /build/entrypoint.sh .
-COPY --from=builder /build/wait-for .
-COPY --from=builder /build/dist/mempool /var/www/mempool
-COPY --from=builder /build/nginx.conf /etc/nginx/
-COPY --from=builder /build/nginx-mempool.conf /etc/nginx/conf.d/
-
-RUN chmod +x /patch/entrypoint.sh
-RUN chmod +x /patch/wait-for
-
-RUN chown -R 1000:1000 /patch && chmod -R 755 /patch && \
-        chown -R 1000:1000 /var/cache/nginx && \
-        chown -R 1000:1000 /var/log/nginx && \
-        chown -R 1000:1000 /etc/nginx/nginx.conf && \
-        chown -R 1000:1000 /etc/nginx/conf.d
-RUN touch /var/run/nginx.pid && \
-        chown -R 1000:1000 /var/run/nginx.pid
-
-USER 1000
-
-ENTRYPOINT ["/patch/entrypoint.sh"]
-CMD ["nginx", "-g", "daemon off;"]

docker/frontend/entrypoint.sh

@@ -1,13 +0,0 @@
-#!/bin/sh
-__MEMPOOL_BACKEND_MAINNET_HTTP_HOST__=${BACKEND_MAINNET_HTTP_HOST:=127.0.0.1}
-__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__=${BACKEND_MAINNET_HTTP_PORT:=8999}
-__MEMPOOL_FRONTEND_HTTP_PORT__=${FRONTEND_HTTP_PORT:=8080}
-
-sed -i "s/__MEMPOOL_BACKEND_MAINNET_HTTP_HOST__/${__MEMPOOL_BACKEND_MAINNET_HTTP_HOST__}/g" /etc/nginx/conf.d/nginx-mempool.conf
-sed -i "s/__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__/${__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__}/g" /etc/nginx/conf.d/nginx-mempool.conf
-
-cp /etc/nginx/nginx.conf /patch/nginx.conf
-sed -i "s/__MEMPOOL_FRONTEND_HTTP_PORT__/${__MEMPOOL_FRONTEND_HTTP_PORT__}/g" /patch/nginx.conf
-cat /patch/nginx.conf > /etc/nginx/nginx.conf
-
-exec "$@"

docker/frontend/wait-for

@@ -1,84 +0,0 @@
-#!/bin/sh
-
-TIMEOUT=15
-QUIET=0
-
-echoerr() {
-  if [ "$QUIET" -ne 1 ]; then printf "%s\n" "$*" 1>&2; fi
-}
-
-usage() {
-  exitcode="$1"
-  cat << USAGE >&2
-Usage:
-  $cmdname host:port [-t timeout] [-- command args]
-  -q | --quiet                        Do not output any status messages
-  -t TIMEOUT | --timeout=timeout      Timeout in seconds, zero for no timeout
-  -- COMMAND ARGS                     Execute command with args after the test finishes
-USAGE
-  exit "$exitcode"
-}
-
-wait_for() {
- if ! command -v nc >/dev/null; then
-    echoerr 'nc command is missing!'
-    exit 1
-  fi
-
-  for i in `seq $TIMEOUT` ; do
-    nc -z "$HOST" "$PORT" > /dev/null 2>&1
-    
-    result=$?
-    if [ $result -eq 0 ] ; then
-      if [ $# -gt 0 ] ; then
-        exec "$@"
-      fi
-      exit 0
-    fi
-    sleep 1
-  done
-  echo "Operation timed out" >&2
-  exit 1
-}
-
-while [ $# -gt 0 ]
-do
-  case "$1" in
-    *:* )
-    HOST=$(printf "%s\n" "$1"| cut -d : -f 1)
-    PORT=$(printf "%s\n" "$1"| cut -d : -f 2)
-    shift 1
-    ;;
-    -q | --quiet)
-    QUIET=1
-    shift 1
-    ;;
-    -t)
-    TIMEOUT="$2"
-    if [ "$TIMEOUT" = "" ]; then break; fi
-    shift 2
-    ;;
-    --timeout=*)
-    TIMEOUT="${1#*=}"
-    shift 1
-    ;;
-    --)
-    shift
-    break
-    ;;
-    --help)
-    usage 0
-    ;;
-    *)
-    echoerr "Unknown argument: $1"
-    usage 1
-    ;;
-  esac
-done
-
-if [ "$HOST" = "" -o "$PORT" = "" ]; then
-  echoerr "Error: you need to provide a host and port to test."
-  usage 2
-fi
-
-wait_for "$@"

docker/init.sh

@@ -1,18 +0,0 @@
-#!/bin/sh
-
-#backend
-gitMaster="\.\.\/\.git\/refs\/heads\/master"
-git ls-remote https://github.com/mempool/mempool.git $1 | awk '{ print $1}' > ./backend/master
-cp ./docker/backend/* ./backend/
-sed -i "s/${gitMaster}/master/g" ./backend/src/api/backend-info.ts
-
-#frontend
-localhostIP="127.0.0.1"
-cp ./docker/frontend/* ./frontend
-cp ./nginx.conf ./frontend/
-cp ./nginx-mempool.conf ./frontend/
-sed -i "s/${localhostIP}:80/0.0.0.0:__MEMPOOL_FRONTEND_HTTP_PORT__/g" ./frontend/nginx.conf
-sed -i "s/${localhostIP}/0.0.0.0/g" ./frontend/nginx.conf
-sed -i "s/user nobody;//g" ./frontend/nginx.conf
-sed -i "s!/etc/nginx/nginx-mempool.conf!/etc/nginx/conf.d/nginx-mempool.conf!g" ./frontend/nginx.conf
-sed -i "s/${localhostIP}:8999/__MEMPOOL_BACKEND_MAINNET_HTTP_HOST__:__MEMPOOL_BACKEND_MAINNET_HTTP_PORT__/g" ./frontend/nginx-mempool.conf

docker/scripts/get_image_digest.sh

@@ -1,18 +0,0 @@
-#!/bin/sh
-
-VERSION=$1
-IMAGE=""
-
-if [ -z "${VERSION}" ]; then
-    echo "no version provided (i.e, v2.2.0), using latest tag"
-    VERSION="latest"
-fi
-
-for package in frontend backend; do
-  PACKAGE=mempool/"$package"
-  IMAGE="$PACKAGE":"$VERSION"
-  HASH=`docker pull $IMAGE > /dev/null && docker inspect $IMAGE | sed -n '/RepoDigests/{n;p;}' | grep -o '[0-9a-f]\{64\}'`
-  if [ -n "${HASH}" ]; then
-    echo "$IMAGE"@sha256:"$HASH"
-  fi
-done 

entrypoint.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+## Start SQL
+mysqld_safe&
+sleep 5
+## http server:
+nginx
+
+## Set up some files:
+cd /mempool.space/backend 
+rm -f cache.json
+touch cache.json
+
+## Build mempool-config.json file ourseleves.
+## We used to use jq for this but that produced output which caused bugs,
+## specifically numbers were surrounded by quotes, which breaks things.
+## Old command was jq -n env > mempool-config.json
+## This way is more complex, but more compatible with the backend functions.
+
+## Define a function to allow us to easily get indexes of the = string in from the env output:
+strindex() { 
+  x="${1%%$2*}"
+  [[ "$x" = "$1" ]] && echo -1 || echo "${#x}"
+}
+## Regex to check if we have a number or not:
+NumberRegEx='^[0-9]+$'
+## Delete the old file, and start a new one:
+rm -f mempool-config.json
+echo "{" >> mempool-config.json
+## For each env we add into the mempool-config.json file in one of two ways.
+## Either:
+## "Variable": "Value",
+## if a string, or
+## "Variable": Value,
+## if a integer
+for e in `env`; do
+    if [[ ${e:`strindex "$e" "="`+1} =~ $NumberRegEx ]] ; then
+        ## Integer add:
+        echo "\""${e:0:`strindex "$e" "="`}"\": "${e:`strindex "$e" "="`+1}","  >> mempool-config.json
+    else
+        ## String add:
+        echo "\""${e:0:`strindex "$e" "="`}"\": \""${e:`strindex "$e" "="`+1}$"\","  >> mempool-config.json
+    fi
+done
+## Take out the trailing , from the last entry.
+## This means replacing the file with one that is missing the last character
+echo `sed '$ s/.$//' mempool-config.json` > mempool-config.json
+## And finally finish off:
+echo "}" >> mempool-config.json
+
+## Start mempoolspace:
+node dist/index.js

frontend/.browserslistrc

@@ -1,12 +0,0 @@
-# This file is used by the build system to adjust CSS and JS output to support the specified browsers below.
-# For additional information regarding the format and rule options, please see:
-# https://github.com/browserslist/browserslist#queries
-
-# You can see what browsers were selected by your queries by running:
-#   npx browserslist
-
-> 0.5%
-last 2 versions
-Firefox ESR
-not dead
-not IE 9-11 # For IE 9-11 support, remove 'not'.

frontend/.editorconfig

@@ -1,4 +1,4 @@
-# Editor configuration, see https://editorconfig.org
+# Editor configuration, see http://editorconfig.org
 root = true
 
 [*]

frontend/.gitignore

@@ -4,18 +4,10 @@
 /dist
 /tmp
 /out-tsc
-server.run.js
-
-# Only exists if Bazel was run
-/bazel-out
 
 # dependencies
 /node_modules
 
-# profiling files
-chrome-profiler-events.json
-speed-measure-plugin.json
-
 # IDEs and editors
 /.idea
 .project
@@ -31,10 +23,8 @@ speed-measure-plugin.json
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
-.history/*
 
 # misc
-/.angular/cache
 /.sass-cache
 /connect.lock
 /coverage
@@ -47,19 +37,3 @@ testem.log
 # System Files
 .DS_Store
 Thumbs.db
-
-src/resources/assets.json
-src/resources/assets.minimal.json
-src/resources/pools.json
-
-# environment config
-mempool-frontend-config.json
-generated-config.js
-
-# e2e results
-cypress/videos
-cypress/screenshots
-
-# Base index
-src/index.html
-

frontend/.tx/config

@@ -1,7 +0,0 @@
-[main]
-host = https://www.transifex.com
-
-[mempool.frontend-src-locale-messages-xlf--master]
-file_filter = frontend/src/locale/messages.<lang>.xlf
-source_lang = en-US
-type = XLIFF

frontend/README.md

@@ -1,76 +0,0 @@
-# mempool-frontend
-
-## Contributing
-
-This package is used for the https://mempool.space, https://liquid.network and https://bisq.markets websites - there are npm scripts to setup all three, which effectively change how BASE_MODULE is  configured:
-
-```
-$ npm run config:defaults:mempool
-$ npm run config:defaults:liquid
-$ npm run config:defaults:bisq
-```
-
-Changes that affect the frontend codebase only can be done using the production backend so you don't need to spin up the entire Mempool infrastructure. This is very convenient in case you want to quickly improve the UI, fix typos or implement new features that don't require any backend changes.
-
-Make your changes, install the project dependencies and run the frontend server as follows:
-
-```
-$ npm install
-$ npm run serve:local-prod
-```
-
-The frontend will be available at http://localhost:4200/ and all API requests will be proxied to the production server at https://mempool.space
-
-After making your changes, you can run our end-to-end automation suite and check for possible regressions:
-
-Headless:
-
-```
-$ npm run config:defaults:mempool && npm run cypress:run
-```
-
-Interactive:
-
-```
-$ npm run config:defaults:mempool && npm run cypress:open
-```
-
-This will open the Cypress test runner, where you can select any of the test files to run.
-
-If all tests are green, submit your PR and it will be reviewed by someone on the team as soon as possible.
-
-## Translations: Transifex Project
-
-The mempool frontend strings are localized into 20+ locales:
-https://www.transifex.com/mempool/mempool/dashboard/
-
-### Translators
-
-* Arabic @baro0k
-* Czech @pixelmade2
-* German @Emzy
-* English (default)
-* Spanish @maxhodler @bisqes
-* Persian @techmix
-* French @Bayernatoor
-* Korean @kcalvinalvinn
-* Italian @HodlBits
-* Hebrew @Sh0ham
-* Georgian @wyd_idk
-* Hungarian @btcdragonlord
-* Dutch @m__btc
-* Japanese @wiz @japananon
-* Norwegian @T82771355
-* Polish @maciejsoltysiak
-* Portugese @jgcastro1985
-* Slovenian @thepkbadger
-* Finnish @bio_bitcoin
-* Swedish @softsimon_
-* Thai @Gusb3ll
-* Turkish @stackmore
-* Ukrainian @volbil
-* Vietnamese @bitcoin_vietnam
-* Chinese @wdljt
-* Russian @TonyCrusoe @Bitconan
-* Romanian @mirceavesa
-* Macedonian @SkechBoy

frontend/angular.json

@@ -1,172 +1,35 @@
 {
   "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
-  "cli": {
-    "analytics": false
-  },
   "version": 1,
   "newProjectRoot": "projects",
   "projects": {
     "mempool": {
-      "projectType": "application",
-      "schematics": {
-        "@schematics/angular:component": {
-          "style": "scss"
-        }
-      },
       "root": "",
       "sourceRoot": "src",
+      "projectType": "application",
       "prefix": "app",
-      "i18n": {
-        "sourceLocale": {
-          "code": "en-US",
-          "baseHref": "/"
-        },
-        "locales": {
-          "ar": {
-            "translation": "src/locale/messages.ar.xlf",
-            "baseHref": "/ar/"
-          },
-          "ca": {
-            "translation": "src/locale/messages.ca.xlf",
-            "baseHref": "/ca/"
-          },
-          "cs": {
-            "translation": "src/locale/messages.cs.xlf",
-            "baseHref": "/cs/"
-          },
-          "de": {
-            "translation": "src/locale/messages.de.xlf",
-            "baseHref": "/de/"
-          },
-          "es": {
-            "translation": "src/locale/messages.es.xlf",
-            "baseHref": "/es/"
-          },
-          "fa": {
-            "translation": "src/locale/messages.fa.xlf",
-            "baseHref": "/fa/"
-          },
-          "fr": {
-            "translation": "src/locale/messages.fr.xlf",
-            "baseHref": "/fr/"
-          },
-          "ja": {
-            "translation": "src/locale/messages.ja.xlf",
-            "baseHref": "/ja/"
-          },
-          "ka": {
-            "translation": "src/locale/messages.ka.xlf",
-            "baseHref": "/ka/"
-          },
-          "ko": {
-            "translation": "src/locale/messages.ko.xlf",
-            "baseHref": "/ko/"
-          },
-          "it": {
-            "translation": "src/locale/messages.it.xlf",
-            "baseHref": "/it/"
-          },
-          "he": {
-            "translation": "src/locale/messages.he.xlf",
-            "baseHref": "/he/"
-          },
-          "nl": {
-            "translation": "src/locale/messages.nl.xlf",
-            "baseHref": "/nl/"
-          },
-          "nb": {
-            "translation": "src/locale/messages.nb.xlf",
-            "baseHref": "/nb/"
-          },
-          "pl": {
-            "translation": "src/locale/messages.pl.xlf",
-            "baseHref": "/pl/"
-          },
-          "pt": {
-            "translation": "src/locale/messages.pt.xlf",
-            "baseHref": "/pt/"
-          },
-          "sl": {
-            "translation": "src/locale/messages.sl.xlf",
-            "baseHref": "/sl/"
-          },
-          "sv": {
-            "translation": "src/locale/messages.sv.xlf",
-            "baseHref": "/sv/"
-          },
-          "th": {
-            "translation": "src/locale/messages.th.xlf",
-            "baseHref": "/th/"
-          },
-          "tr": {
-            "translation": "src/locale/messages.tr.xlf",
-            "baseHref": "/tr/"
-          },
-          "uk": {
-            "translation": "src/locale/messages.uk.xlf",
-            "baseHref": "/uk/"
-          },
-          "fi": {
-            "translation": "src/locale/messages.fi.xlf",
-            "baseHref": "/fi/"
-          },
-          "vi": {
-            "translation": "src/locale/messages.vi.xlf",
-            "baseHref": "/vi/"
-          },
-          "hu": {
-            "translation": "src/locale/messages.hu.xlf",
-            "baseHref": "/hu/"
-          },
-          "mk": {
-            "translation": "src/locale/messages.mk.xlf",
-            "baseHref": "/mk/"
-          },
-          "zh": {
-            "translation": "src/locale/messages.zh.xlf",
-            "baseHref": "/zh/"
-          },
-          "ro": {
-            "translation": "src/locale/messages.ro.xlf",
-            "baseHref": "/ro/"
-          },
-          "ru": {
-            "translation": "src/locale/messages.ru.xlf",
-            "baseHref": "/ru/"
-          },
-          "hi": {
-            "translation": "src/locale/messages.hi.xlf",
-            "baseHref": "/hi/"
-          }
+      "schematics": {
+        "@schematics/angular:component": {
+          "styleext": "scss"
         }
       },
       "architect": {
         "build": {
           "builder": "@angular-devkit/build-angular:browser",
           "options": {
-            "outputPath": "dist/mempool/browser",
+            "outputPath": "dist/mempool",
             "index": "src/index.html",
             "main": "src/main.ts",
             "polyfills": "src/polyfills.ts",
-            "tsConfig": "tsconfig.app.json",
+            "tsConfig": "src/tsconfig.app.json",
             "assets": [
               "src/favicon.ico",
-              "src/resources",
-              "src/robots.txt"
+              "src/assets"
             ],
             "styles": [
-              "src/styles.scss",
-              "node_modules/@fortawesome/fontawesome-svg-core/styles.css"
+              "src/styles.scss"
             ],
-            "scripts": [
-              "generated-config.js"
-            ],
-            "vendorChunk": true,
-            "extractLicenses": false,
-            "buildOptimizer": false,
-            "sourceMap": true,
-            "optimization": false,
-            "namedChunks": true
+            "scripts": []
           },
           "configurations": {
             "production": {
@@ -176,34 +39,34 @@
                   "with": "src/environments/environment.prod.ts"
                 }
               ],
-              "optimization": {
-                "scripts": true,
-                "styles": {
-                  "minify": true,
-                  "inlineCritical": false
-                },
-                "fonts": true
-              },
+              "optimization": true,
               "outputHashing": "all",
               "sourceMap": false,
+              "extractCss": true,
               "namedChunks": false,
+              "aot": true,
               "extractLicenses": true,
               "vendorChunk": false,
-              "buildOptimizer": true,
-              "budgets": [
+              "buildOptimizer": true
+            },
+            "electrs": {
+              "fileReplacements": [
                 {
-                  "type": "initial",
-                  "maximumWarning": "2mb",
-                  "maximumError": "5mb"
-                },
-                {
-                  "type": "anyComponentStyle",
-                  "maximumWarning": "6kb"
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment-electrs.prod.ts"
                 }
-              ]
+              ],
+              "optimization": true,
+              "outputHashing": "all",
+              "sourceMap": false,
+              "extractCss": true,
+              "namedChunks": false,
+              "aot": true,
+              "extractLicenses": true,
+              "vendorChunk": false,
+              "buildOptimizer": true
             }
-          },
-          "defaultConfiguration": ""
+          }
         },
         "serve": {
           "builder": "@angular-devkit/build-angular:dev-server",
@@ -213,22 +76,6 @@
           "configurations": {
             "production": {
               "browserTarget": "mempool:build:production"
-            },
-            "local": {
-              "proxyConfig": "proxy.conf.local.js",
-              "verbose": true
-            },
-            "staging": {
-              "proxyConfig": "proxy.conf.js",
-              "disableHostCheck": true,
-              "host": "0.0.0.0",
-              "verbose": true
-            },
-            "local-prod": {
-              "proxyConfig": "proxy.conf.js",
-              "disableHostCheck": true,
-              "host": "0.0.0.0",
-              "verbose": false
             }
           }
         },
@@ -243,98 +90,50 @@
           "options": {
             "main": "src/test.ts",
             "polyfills": "src/polyfills.ts",
-            "tsConfig": "tsconfig.spec.json",
-            "karmaConfig": "karma.conf.js",
-            "assets": [
-              "src/favicon.ico",
-              "src/resources"
-            ],
+            "tsConfig": "src/tsconfig.spec.json",
+            "karmaConfig": "src/karma.conf.js",
             "styles": [
               "src/styles.scss"
             ],
-            "scripts": []
-          }
-        },
-        "e2e": {
-          "builder": "@cypress/schematic:cypress",
-          "options": {
-            "devServerTarget": "mempool:serve:local-prod",
-            "watch": true,
-            "headless": false
-          },
-          "configurations": {
-            "production": {
-              "devServerTarget": "mempool:serve:production"
-            }
-          }
-        },
-        "server": {
-          "builder": "@angular-devkit/build-angular:server",
-          "options": {
-            "outputPath": "dist/mempool/server",
-            "main": "server.ts",
-            "tsConfig": "tsconfig.server.json",
-            "sourceMap": true,
-            "optimization": false
-          },
-          "configurations": {
-            "production": {
-              "outputHashing": "media",
-              "fileReplacements": [
-                {
-                  "replace": "src/environments/environment.ts",
-                  "with": "src/environments/environment.prod.ts"
-                }
-              ],
-              "sourceMap": false,
-              "localize": true,
-              "optimization": true
-            }
-          },
-          "defaultConfiguration": ""
-        },
-        "serve-ssr": {
-          "builder": "@nguniversal/builders:ssr-dev-server",
-          "options": {
-            "browserTarget": "mempool:build",
-            "serverTarget": "mempool:server"
-          },
-          "configurations": {
-            "production": {
-              "browserTarget": "mempool:build:production",
-              "serverTarget": "mempool:server:production"
-            }
-          }
-        },
-        "prerender": {
-          "builder": "@nguniversal/builders:prerender",
-          "options": {
-            "browserTarget": "mempool:build:production",
-            "serverTarget": "mempool:server:production",
-            "routes": [
-              "/"
+            "scripts": [],
+            "assets": [
+              "src/favicon.ico",
+              "src/assets"
             ]
-          },
-          "configurations": {
-            "production": {}
           }
         },
-        "cypress-run": {
-          "builder": "@cypress/schematic:cypress",
+        "lint": {
+          "builder": "@angular-devkit/build-angular:tslint",
           "options": {
+            "tsConfig": [
+              "src/tsconfig.app.json",
+              "src/tsconfig.spec.json"
+            ],
+            "exclude": [
+              "**/node_modules/**"
+            ]
+          }
+        }
+      }
+    },
+    "mempool-e2e": {
+      "root": "e2e/",
+      "projectType": "application",
+      "architect": {
+        "e2e": {
+          "builder": "@angular-devkit/build-angular:protractor",
+          "options": {
+            "protractorConfig": "e2e/protractor.conf.js",
             "devServerTarget": "mempool:serve"
-          },
-          "configurations": {
-            "production": {
-              "devServerTarget": "mempool:serve:production"
-            }
           }
         },
-        "cypress-open": {
-          "builder": "@cypress/schematic:cypress",
+        "lint": {
+          "builder": "@angular-devkit/build-angular:tslint",
           "options": {
-            "watch": true,
-            "headless": false
+            "tsConfig": "e2e/tsconfig.e2e.json",
+            "exclude": [
+              "**/node_modules/**"
+            ]
           }
         }
       }

frontend/cypress.json

@@ -1,15 +0,0 @@
-{
-  "projectId": "ry4br7",
-  "integrationFolder": "cypress/integration",
-  "supportFile": "cypress/support/index.ts",
-  "videosFolder": "cypress/videos",
-  "screenshotsFolder": "cypress/screenshots",
-  "pluginsFile": "cypress/plugins/index.js",
-  "fixturesFolder": "cypress/fixtures",
-  "baseUrl": "http://localhost:4200",
-  "video": false,
-  "retries": {
-    "runMode": 3,
-    "openMode": 0
-  }
-}

frontend/cypress/fixtures/assets.json

@@ -1,119 +0,0 @@
-{
-    "f59c5f3e8141f322276daa63ed5f307085808aea6d4ef9ba61e28154533fdec7": {
-      "asset_id": "f59c5f3e8141f322276daa63ed5f307085808aea6d4ef9ba61e28154533fdec7",
-      "contract": {
-        "entity": {
-          "domain": "listedreserve.com"
-        },
-        "issuer_pubkey": "031cc579d142a03b33cdd745922112821c16e5e8b74e3bd57f16f7fda872b6f1d0",
-        "name": "Liquid AUD",
-        "precision": 2,
-        "ticker": "AUDL",
-        "version": 0
-      },
-      "issuance_txin": {
-        "txid": "e5c5144ba3dc48259ae29023fe9f7775dec1fc049f456dd3d1f7178e31901fb5",
-        "vin": 0
-      },
-      "issuance_prevout": {
-        "txid": "ed48be2e035ffa425d2c6faaa82b6a7b648aed1246b6ac76c72e0408db8cf057",
-        "vout": 1
-      },
-      "name": "Liquid AUD",
-      "ticker": "AUDL",
-      "precision": 2,
-      "entity": {
-        "domain": "listedreserve.com"
-      },
-      "version": 0,
-      "issuer_pubkey": "031cc579d142a03b33cdd745922112821c16e5e8b74e3bd57f16f7fda872b6f1d0"
-    },
-    "0e99c1a6da379d1f4151fb9df90449d40d0608f6cb33a5bcbfc8c265f42bab0a": {
-      "asset_id": "0e99c1a6da379d1f4151fb9df90449d40d0608f6cb33a5bcbfc8c265f42bab0a",
-      "contract": {
-        "entity": {
-          "domain": "lcad.bullbitcoin.com"
-        },
-        "issuer_pubkey": "027fa34026195b05f3aa217335416811dca4f5b579d00271a1bb6304c0152458a8",
-        "name": "Liquid CAD",
-        "precision": 8,
-        "ticker": "LCAD",
-        "version": 0
-      },
-      "issuance_txin": {
-        "txid": "238badf029cadcf546d90ce23c7eafc2fa2082585c9bd62dc26f1aa11c7bd850",
-        "vin": 0
-      },
-      "issuance_prevout": {
-        "txid": "a87f13917c08c7ccd8eddb1830c5c9a2bcd59c7d167e9d528659ba40808a6b76",
-        "vout": 0
-      },
-      "name": "Liquid CAD",
-      "ticker": "LCAD",
-      "precision": 8,
-      "entity": {
-        "domain": "lcad.bullbitcoin.com"
-      },
-      "version": 0,
-      "issuer_pubkey": "027fa34026195b05f3aa217335416811dca4f5b579d00271a1bb6304c0152458a8"
-    },
-    "3438ecb49fc45c08e687de4749ed628c511e326460ea4336794e1cf02741329e": {
-      "asset_id": "3438ecb49fc45c08e687de4749ed628c511e326460ea4336794e1cf02741329e",
-      "contract": {
-        "entity": {
-          "domain": "settlenet.io"
-        },
-        "issuer_pubkey": "037b09d542bf7cea6a19fa624b4441790c1a6e44823597bf190e981a846a196541",
-        "name": "SETTLENET JPY Stablecoin by Crypto Garage",
-        "precision": 0,
-        "ticker": "JPYS",
-        "version": 0
-      },
-      "issuance_txin": {
-        "txid": "e33ad5ce8879297d8bfa7daa193920b94abd3fb12f4e8dade9543dbb292387cb",
-        "vin": 0
-      },
-      "issuance_prevout": {
-        "txid": "328c4fadd817ea75e634e3648eb4be0bf7e669539b8da921c0f77af3bc148894",
-        "vout": 1
-      },
-      "name": "SETTLENET JPY Stablecoin by Crypto Garage",
-      "ticker": "JPYS",
-      "precision": 0,
-      "entity": {
-        "domain": "settlenet.io"
-      },
-      "version": 0,
-      "issuer_pubkey": "037b09d542bf7cea6a19fa624b4441790c1a6e44823597bf190e981a846a196541"
-    },
-    "ce091c998b83c78bb71a632313ba3760f1763d9cfcffae02258ffa9865a37bd2": {
-      "asset_id": "ce091c998b83c78bb71a632313ba3760f1763d9cfcffae02258ffa9865a37bd2",
-      "contract": {
-        "entity": {
-          "domain": "tether.to"
-        },
-        "issuer_pubkey": "0337cceec0beea0232ebe14cba0197a9fbd45fcf2ec946749de920e71434c2b904",
-        "name": "Tether USD",
-        "precision": 8,
-        "ticker": "USDt",
-        "version": 0
-      },
-      "issuance_txin": {
-        "txid": "abb4080d91849e933ee2ed65da6b436f7c385cf363fb4aa08399f1e27c58ff3d",
-        "vin": 0
-      },
-      "issuance_prevout": {
-        "txid": "9596d259270ef5bac0020435e6d859aea633409483ba64e232b8ba04ce288668",
-        "vout": 0
-      },
-      "name": "Tether USD",
-      "ticker": "USDt",
-      "precision": 8,
-      "entity": {
-        "domain": "tether.to"
-      },
-      "version": 0,
-      "issuer_pubkey": "0337cceec0beea0232ebe14cba0197a9fbd45fcf2ec946749de920e71434c2b904"
-    }
-  }
-  

frontend/cypress/fixtures/assets.minimal.json

@@ -1,33 +0,0 @@
-{
-    "f59c5f3e8141f322276daa63ed5f307085808aea6d4ef9ba61e28154533fdec7": [
-      "listedreserve.com",
-      "AUDL",
-      "Liquid AUD",
-      2
-    ],
-    "0e99c1a6da379d1f4151fb9df90449d40d0608f6cb33a5bcbfc8c265f42bab0a": [
-      "lcad.bullbitcoin.com",
-      "LCAD",
-      "Liquid CAD",
-      8
-    ],
-    "6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d": [
-      null,
-      "L-BTC",
-      "Liquid Bitcoin",
-      8
-    ],
-    "ce091c998b83c78bb71a632313ba3760f1763d9cfcffae02258ffa9865a37bd2": [
-      "tether.to",
-      "USDt",
-      "Tether USD",
-      8
-    ],
-    "3438ecb49fc45c08e687de4749ed628c511e326460ea4336794e1cf02741329e": [
-      "settlenet.io",
-      "JPYS",
-      "SETTLENET JPY Stablecoin by Crypto Garage",
-      0
-    ]
-  }
-  

frontend/cypress/fixtures/mainnet_live2hchart.json

@@ -1 +0,0 @@
-{"live-2h-chart":{"id":1319298,"added":"2021-07-23T18:27:34.000Z","unconfirmed_transactions":546,"tx_per_second":3.93333,"vbytes_per_second":1926,"mempool_byte_weight":1106656,"total_fee":6198583,"vsizes":[255,18128,43701,58534,17144,5532,4483,1759,2394,1089,1683,7409,751,101010,1151,592,1497,703,1369,4747,800,1221,0,0,712,0,0,0,0,0,0,0,0,0,0,0,0,0]}}

frontend/cypress/integration/bisq/bisq.spec.ts

@@ -1,88 +0,0 @@
-describe('Bisq', () => {
-    const baseModule = Cypress.env("BASE_MODULE");
-    const basePath = (baseModule === 'bisq') ? '' : '/bisq';
-    
-    beforeEach(() => {
-        cy.intercept('/sockjs-node/info*').as('socket');
-        cy.intercept('/bisq/api/markets/hloc?market=btc_usd&interval=day').as('hloc');
-        cy.intercept('/bisq/api/markets/ticker').as('ticker');
-        cy.intercept('/bisq/api/markets/markets').as('markets');
-        cy.intercept('/bisq/api/markets/volumes/7d').as('7d');
-        cy.intercept('/bisq/api/markets/trades?market=all').as('trades');
-        cy.intercept('/bisq/api/txs/*/*').as('txs');
-        cy.intercept('/bisq/api/blocks/*/*').as('blocks');
-        cy.intercept('/bisq/api/stats').as('stats');
-        
-        Cypress.Commands.add('waitForDashboard', () => {
-            cy.wait('@socket');
-            cy.wait('@hloc');
-            cy.wait('@ticker');
-            cy.wait('@markets');
-            cy.wait('@7d');
-            cy.wait('@trades');
-          });
-    });
-
-    if (baseModule === 'mempool' || baseModule === 'bisq') {
-
-        it('loads the dashboard', () => {
-            cy.visit(`${basePath}`);
-            cy.waitForSkeletonGone();
-        });
-
-        it('loads the transactions screen', () => {
-            cy.visit(`${basePath}`);
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(2) > a').click().then(() => {
-                cy.get('.table > tr').should('have.length', 50);
-            });
-        });
-
-        it('loads the blocks screen', () => {
-            cy.visit(`${basePath}`);
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(3) > a').click().then(() => {
-                cy.wait('@blocks');
-                cy.get('tbody tr').should('have.length', 10);
-            });
-        });
-
-        it('loads the stats screen', () => {
-            cy.visit(`${basePath}`);
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(4) > a').click().then(() => {
-                cy.wait('@stats');
-            });
-        });
-
-        it('loads the api screen', () => {
-            cy.visit(`${basePath}`);
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(5) > a').click().then(() => {
-                cy.get('.card').should('have.length.at.least', 1);
-                cy.get('.card').first().click();
-                cy.get('.card-body');
-            });
-        });
-
-        it('shows blocks pagination with 5 pages (desktop)', () => {
-            cy.viewport(760, 800);
-            cy.visit(`${basePath}/blocks`);
-            cy.waitForSkeletonGone();
-            cy.get('tbody tr').should('have.length', 10);
-            // 5 pages + 4 buttons = 9 buttons
-            cy.get('.pagination-container ul.pagination').first().children().should('have.length', 9);
-        });
-
-        it('shows blocks pagination with 3 pages (mobile)', () => {
-            cy.viewport(669, 800);
-            cy.visit(`${basePath}/blocks`);
-            cy.waitForSkeletonGone();
-            cy.get('tbody tr').should('have.length', 10);
-            // 3 pages + 4 buttons = 7 buttons
-            cy.get('.pagination-container ul.pagination').first().children().should('have.length', 7);
-        });
-    } else {
-        it.skip(`Tests cannot be run on the selected BASE_MODULE ${baseModule}`);
-    }
-  });

frontend/cypress/integration/liquid/liquid.spec.ts

@@ -1,153 +0,0 @@
-describe('Liquid', () => {
-    const baseModule = Cypress.env("BASE_MODULE");
-    const basePath = (baseModule === 'liquid') ? '' : '/liquid';
-
-    beforeEach(() => {
-        cy.intercept('/liquid/api/block/**').as('block');
-        cy.intercept('/liquid/api/blocks/').as('blocks');
-        cy.intercept('/liquid/api/tx/**/outspends').as('outspends');
-        cy.intercept('/liquid/api/block/**/txs/**').as('block-txs');
-        cy.intercept('/resources/pools.json').as('pools');
-
-        Cypress.Commands.add('waitForBlockData', () => {
-            cy.wait('@socket');
-            cy.wait('@block');
-            cy.wait('@outspends');
-          });
-    });
-
-    if (baseModule === 'mempool' || baseModule === 'liquid') {
-
-        it('check first mempool block after skeleton loads', () => {
-            cy.visit(`${basePath}`);
-            cy.waitForSkeletonGone();
-            cy.get('#mempool-block-0 > .blockLink').should('exist');
-        });
-
-        it('loads the dashboard', () => {
-            cy.visit(`${basePath}`);
-            cy.waitForSkeletonGone();
-        });
-
-        it('loads the blocks page', () => {
-            cy.visit(`${basePath}/blocks`);
-            cy.waitForSkeletonGone();
-        });
-
-        it('loads a specific block page', () => {
-            cy.visit(`${basePath}/block/7e1369a23a5ab861e7bdede2aadcccae4ea873ffd9caf11c7c5541eb5bcdff54`);
-            cy.waitForSkeletonGone();
-        });
-
-        it('loads the graphs page', () => {
-            cy.visit(`${basePath}/graphs`);
-            cy.waitForSkeletonGone();
-        });
-
-        it('loads the tv page - desktop', () => {
-            cy.visit(`${basePath}`);
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(3) > a').click().then(() => {
-                cy.wait(1000);
-            });
-        });
-
-        it('loads the graphs page - mobile', () => {
-            cy.visit(`${basePath}`)
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(3) > a').click().then(() => {
-                cy.viewport('iphone-6');
-                cy.wait(1000);
-                cy.get('.tv-only').should('not.exist');
-            });
-        });
-
-        describe('assets', () => {
-            it('shows the assets screen', () => {
-                cy.visit(`${basePath}/assets`);
-                cy.waitForSkeletonGone();
-                cy.get('table tr').should('have.length.at.least', 5);
-            });
-
-            it('allows searching assets', () => {
-                cy.visit(`${basePath}/assets`);
-                cy.waitForSkeletonGone();
-                cy.get('.container-xl input').click().type('Liquid Bitcoin').then(() => {
-                    cy.get('table tr').should('have.length', 1);
-                });
-            });
-
-            it('shows a specific asset ID', () => {
-                cy.visit(`${basePath}/assets`);
-                cy.waitForSkeletonGone();
-                cy.get('.container-xl input').click().type('Liquid AUD').then(() => {
-                    cy.get('table tr td:nth-of-type(1) a').click();
-                });
-            });
-        });
-
-
-        describe('unblinded TX', () => {
-
-            it('should not show an unblinding error message for regular txs', () => {
-                cy.visit(`${basePath}/tx/82a479043ec3841e0d3f829afc8df4f0e2bbd675a13f013ea611b2fde0027d45`);
-                cy.waitForSkeletonGone();
-                cy.get('.error-unblinded' ).should('not.exist');
-            });
-
-            it('show unblinded TX', () => {
-                cy.visit(`${basePath}/tx/f2f41c0850e8e7e3f1af233161fd596662e67c11ef10ed15943884186fbb7f46#blinded=100000,6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d,0ab9f70650f16b1db8dfada05237f7d0d65191c3a13183da8a2ddddfbde9a2ad,fd98b2edc5530d76acd553f206a431f4c1fab27e10e290ad719582af878e98fc,2364760,6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d,90c7a43b15b905bca045ca42a01271cfe71d2efe3133f4197792c24505cb32ed,12eb5959d9293b8842e7dd8bc9aa9639fd3fd031c5de3ba911adeca94eb57a3a`);
-                cy.waitForSkeletonGone();
-                cy.get('#table-tx-vin tr').should('have.class', 'assetBox');
-                cy.get('#table-tx-vout tr').should('have.class', 'assetBox');
-            });
-
-            it('show empty unblinded TX', () => {
-                cy.visit(`${basePath}/tx/f2f41c0850e8e7e3f1af233161fd596662e67c11ef10ed15943884186fbb7f46#blinded=`);
-                cy.waitForSkeletonGone();
-                cy.get('#table-tx-vin tr').should('have.class', '');
-                cy.get('#table-tx-vout tr').should('have.class', '');
-            });
-
-            it('show invalid unblinded TX hex', () => {
-                cy.visit(`${basePath}/tx/f2f41c0850e8e7e3f1af233161fd596662e67c11ef10ed15943884186fbb7f46#blinded=123`);
-                cy.waitForSkeletonGone();
-                cy.get('#table-tx-vin tr').should('have.class', '');
-                cy.get('#table-tx-vout tr').should('have.class', '');
-                cy.get('.error-unblinded' ).contains('Error: Invalid blinding data (invalid hex)');
-            });
-
-            it('show first unblinded vout', () => {
-                cy.visit(`${basePath}/tx/f2f41c0850e8e7e3f1af233161fd596662e67c11ef10ed15943884186fbb7f46#blinded=100000,6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d,0ab9f70650f16b1db8dfada05237f7d0d65191c3a13183da8a2ddddfbde9a2ad,fd98b2edc5530d76acd553f206a431f4c1fab27e10e290ad719582af878e98fc`);
-                cy.waitForSkeletonGone();
-                cy.get('#table-tx-vout tr:first-child()').should('have.class', 'assetBox');
-            });
-
-            it('show second unblinded vout', () => {
-                cy.visit(`${basePath}/tx/f2f41c0850e8e7e3f1af233161fd596662e67c11ef10ed15943884186fbb7f46#blinded=2364760,6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d,90c7a43b15b905bca045ca42a01271cfe71d2efe3133f4197792c24505cb32ed,12eb5959d9293b8842e7dd8bc9aa9639fd3fd031c5de3ba911adeca94eb57a3a`);
-                cy.get('#table-tx-vout tr').should('have.class', 'assetBox');
-            });
-
-            it('show invalid error unblinded TX', () => {
-                cy.visit(`${basePath}/tx/f2f41c0850e8e7e3f1af233161fd596662e67c11ef10ed15943884186fbb7f46#blinded=100000,6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d,0ab9f70650f16b1db8dfada05237f7d0d65191c3a13183da8a2ddddfbde9a2ad,fd98b2edc5530d76acd553f206a431f4c1fab27e10e290ad719582af878e98fc,2364760,6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d,90c7a43b15b905bca045ca42a01271cfe71d2efe3133f4197792c24505cb32ed,12eb5959d9293b8842e7dd8bc9aa9639fd3fd031c5de3ba911adeca94eb57a3c`);
-                cy.waitForSkeletonGone();
-                cy.get('#table-tx-vout tr').should('have.class', 'assetBox');
-                cy.get('.error-unblinded' ).contains('Error: Invalid blinding data.');
-            });
-
-            it('shows asset peg in/out and burn transactions', () => {
-                cy.visit(`${basePath}/asset/6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d`);
-                cy.waitForSkeletonGone();
-                cy.get('#table-tx-vout tr').not('.assetBox');
-                cy.get('#table-tx-vin tr').not('.assetBox');
-            });
-
-            it('prevents regressing issue #644', () => {
-                cy.visit(`${basePath}/tx/393b890966f305e7c440fcfb12a13f51a7a9011cc59ff5f14f6f93214261bd82`);
-                cy.waitForSkeletonGone();
-            });
-        });
-    } else {
-        it.skip(`Tests cannot be run on the selected BASE_MODULE ${baseModule}`);
-    }
-});

frontend/cypress/integration/mainnet/mainnet.spec.ts

@@ -1,434 +0,0 @@
-import { emitMempoolInfo, dropWebSocket } from "../../support/websocket";
-
-const baseModule = Cypress.env("BASE_MODULE");
-
-describe('Mainnet', () => {
-    beforeEach(() => {
-        //cy.intercept('/sockjs-node/info*').as('socket');
-        cy.intercept('/api/block-height/*').as('block-height');
-        cy.intercept('/api/block/*').as('block');
-        cy.intercept('/api/block/*/txs/0').as('block-txs');
-        cy.intercept('/api/tx/*/outspends').as('tx-outspends');
-        cy.intercept('/resources/pools.json').as('pools');
-
-        // Search Auto Complete
-        cy.intercept('/api/address-prefix/1wiz').as('search-1wiz');
-        cy.intercept('/api/address-prefix/1wizS').as('search-1wizS');
-        cy.intercept('/api/address-prefix/1wizSA').as('search-1wizSA');
-
-        Cypress.Commands.add('waitForBlockData', () => {
-            cy.wait('@tx-outspends');
-            cy.wait('@pools');
-        });
-    });
-
-    if (baseModule === 'mempool') {
-
-        it('check first mempool block after skeleton loads', () => {
-          cy.visit('/');
-          cy.waitForSkeletonGone();
-          cy.get('#mempool-block-0 > .blockLink').should('exist');
-        });
-
-        it('loads the status screen', () => {
-            cy.visit('/status');
-            cy.get('#mempool-block-0').should('be.visible');
-            cy.get('[id^="bitcoin-block-"]').should('have.length', 8);
-            cy.get('.footer').should('be.visible');
-            cy.get('.row > :nth-child(1)').invoke('text').then((text) => {
-                expect(text).to.match(/Tx vBytes per second:.* vB\/s/);
-            });
-            cy.get('.row > :nth-child(2)').invoke('text').then((text) => {
-                expect(text).to.match(/Unconfirmed:(.*)/);
-            });
-            cy.get('.row > :nth-child(3)').invoke('text').then((text) => {
-                expect(text).to.match(/Mempool size:(.*) (kB|MB) \((\d+) (block|blocks)\)/);
-            });
-        });
-
-        it('loads dashboard, drop websocket and reconnect', () => {
-            cy.viewport('macbook-16');
-            cy.mockMempoolSocket();
-            cy.visit('/');
-            cy.get('.badge').should('not.exist');
-            dropWebSocket();
-            cy.get('.badge').should('be.visible');
-            cy.get('.badge', {timeout: 25000}).should('not.exist');
-            emitMempoolInfo({
-                'params': {
-                loaded: true
-                }
-            });
-            cy.get(':nth-child(1) > #bitcoin-block-0').should('not.exist');
-            cy.get(':nth-child(2) > #bitcoin-block-0').should('not.exist');
-            cy.get(':nth-child(3) > #bitcoin-block-0').should('not.exist');
-        });
-
-        it('loads the dashboard', () => {
-            cy.visit('/');
-            cy.waitForSkeletonGone();
-        });
-
-        it('check op_return tx tooltip', () => {
-            cy.visit('/block/00000000000000000003c5f542bed265319c6cf64238cf1f1bb9bca3ebf686d2');
-            cy.waitForSkeletonGone();
-            cy.get('tbody > :nth-child(2) > :nth-child(1) > a').first().trigger('onmouseover');
-            cy.get('tbody > :nth-child(2) > :nth-child(1) > a').first().trigger('mouseenter');
-            cy.get('.tooltip-inner').should('be.visible');
-        });
-
-        it('check op_return coinbase tooltip', () => {
-            cy.visit('/block/00000000000000000003c5f542bed265319c6cf64238cf1f1bb9bca3ebf686d2');
-            cy.waitForSkeletonGone();
-            cy.get('div > a > .badge').first().trigger('onmouseover');
-            cy.get('div > a > .badge').first().trigger('mouseenter');
-            cy.get('.tooltip-inner').should('be.visible');
-        });
-
-        describe('search', () => {
-            it('allows searching for partial Bitcoin addresses', () => {
-                cy.visit('/');
-                cy.get('.search-box-container > .form-control').type('1wiz').then(() => {
-                    cy.wait('@search-1wiz');
-                    cy.get('ngb-typeahead-window button.dropdown-item').should('have.length', 10);
-                });
-
-                cy.get('.search-box-container > .form-control').type('S').then(() => {
-                    cy.wait('@search-1wizS');
-                    cy.get('ngb-typeahead-window button.dropdown-item').should('have.length', 5);
-                });
-
-                cy.get('.search-box-container > .form-control').type('A').then(() => {
-                    cy.wait('@search-1wizSA');
-                    cy.get('ngb-typeahead-window button.dropdown-item').should('have.length', 1)
-                });
-
-                cy.get('ngb-typeahead-window button.dropdown-item.active').click().then(() => {
-                    cy.url().should('include', '/address/1wizSAYSbuyXbt9d8JV8ytm5acqq2TorC');
-                    cy.waitForSkeletonGone();
-                    cy.get('.text-center').should('not.have.text', 'Invalid Bitcoin address');
-                });
-            });
-
-            ['BC1PQYQSZQ', 'bc1PqYqSzQ'].forEach((searchTerm) => {
-                it(`allows searching for partial case insensitive bech32m addresses: ${searchTerm}`, () => {
-                    cy.visit('/');
-                    cy.get('.search-box-container > .form-control').type(searchTerm).then(() => {
-                        cy.get('ngb-typeahead-window button.dropdown-item').should('have.length', 1);
-                        cy.get('ngb-typeahead-window button.dropdown-item.active').click().then(() => {
-                            cy.url().should('include', '/address/bc1pqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqsyjer9e');
-                            cy.waitForSkeletonGone();
-                            cy.get('.text-center').should('not.have.text', 'Invalid Bitcoin address');
-                        });
-                    });
-                });
-            });
-
-            ['BC1Q000375VXCU', 'bC1q000375vXcU'].forEach((searchTerm) => {
-                it(`allows searching for partial case insensitive bech32 addresses: ${searchTerm}`, () => {
-                    cy.visit('/');
-                    cy.get('.search-box-container > .form-control').type(searchTerm).then(() => {
-                        cy.get('ngb-typeahead-window button.dropdown-item').should('have.length', 1);
-                        cy.get('ngb-typeahead-window button.dropdown-item.active').click().then(() => {
-                            cy.url().should('include', '/address/bc1q000375vxcuf5v04lmwy22vy2thvhqkxghgq7dy');
-                            cy.waitForSkeletonGone();
-                            cy.get('.text-center').should('not.have.text', 'Invalid Bitcoin address');
-                        });
-                    });
-                });
-            });
-
-        });
-
-        describe('blocks navigation', () => {
-
-            describe('keyboard events', () => {
-                it('loads first blockchain blocks visible and keypress arrow right', () => {
-                    cy.viewport('macbook-16');
-                    cy.visit('/');
-                    cy.waitForSkeletonGone();
-                    cy.get('.blockchain-blocks-0 > a').click().then(() => {
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('not.exist');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.waitForPageIdle();
-                        cy.document().right();
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                    });
-                });
-
-                it('loads first blockchain blocks visible and keypress arrow left', () => {
-                    cy.viewport('macbook-16');
-                    cy.visit('/');
-                    cy.waitForSkeletonGone();
-                    cy.get('.blockchain-blocks-0 > a').click().then(() => {
-                        cy.waitForPageIdle();
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('not.exist');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.document().left();
-                        cy.get('.title-block h1').invoke('text').should('equal', 'Next block');
-                    });
-                });
-
-                it('loads last blockchain blocks and keypress arrow right', () => {
-                    cy.viewport('macbook-16');
-                    cy.visit('/');
-                    cy.waitForSkeletonGone();
-                    cy.get('.blockchain-blocks-4 > a').click().then(() => {
-                        cy.waitForPageIdle();
-
-                        // block 6
-                        cy.document().right();
-                        cy.wait(5000);
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-
-                        // block 7
-                        cy.document().right();
-                        cy.wait(5000);
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-
-                        // block 8 - last visible block
-                        cy.document().right();
-                        cy.wait(5000);
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-
-                        // block 9 - not visible at the blochchain blocks visible block
-                        cy.document().right();
-                        cy.wait(5000);
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-
-                    });
-                });
-
-                it('loads genesis block and keypress arrow right', () => {
-                    cy.viewport('macbook-16');
-                    cy.visit('/block/0');
-                    cy.waitForSkeletonGone();
-                    cy.waitForPageIdle();
-
-                    cy.document().right();
-                    cy.wait(5000);
-                    cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                    cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('not.exist');
-                });
-
-                it('loads genesis block and keypress arrow left', () => {
-                    cy.viewport('macbook-16');
-                    cy.visit('/block/0');
-                    cy.waitForSkeletonGone();
-                    cy.waitForPageIdle();
-
-                    cy.document().left();
-                    cy.wait(5000);
-                    cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                    cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                });
-            });
-            describe('mouse events', () => {
-                it('loads first blockchain blocks visible and click on the arrow right', () => {
-                    cy.viewport('macbook-16');
-                    cy.visit('/');
-                    cy.waitForSkeletonGone();
-                    cy.get('.blockchain-blocks-0 > a').click().then(() => {
-                        cy.waitForPageIdle();
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('not.exist');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').click().then(() => {
-                            cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                            cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        });
-                    });
-                });
-
-                it('loads genesis block and click on the arrow left', () => {
-                    cy.viewport('macbook-16');
-                    cy.visit('/block/0');
-                    cy.waitForSkeletonGone();
-                    cy.waitForPageIdle();
-                    cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                    cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('not.exist');
-                    cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').click().then(() => {
-                        cy.get('[ngbtooltip="Next Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                        cy.get('[ngbtooltip="Previous Block"] > .ng-fa-icon > .svg-inline--fa').should('be.visible');
-                    });
-                });
-            });
-        });
-
-
-        it('loads skeleton when changes between networks', () => {
-            cy.visit('/');
-            cy.waitForSkeletonGone();
-
-            cy.changeNetwork("testnet");
-            cy.changeNetwork("signet");
-            cy.changeNetwork("liquid");
-            cy.changeNetwork("mainnet");
-            cy.changeNetwork("bisq");
-        });
-
-        it.skip('loads the dashboard with the skeleton blocks', () => {
-            cy.mockMempoolSocket();
-            cy.visit("/");
-            cy.get(':nth-child(1) > #bitcoin-block-0').should('be.visible');
-            cy.get(':nth-child(2) > #bitcoin-block-0').should('be.visible');
-            cy.get(':nth-child(3) > #bitcoin-block-0').should('be.visible');
-            cy.get('#mempool-block-0').should('be.visible');
-            cy.get('#mempool-block-1').should('be.visible');
-            cy.get('#mempool-block-2').should('be.visible');
-
-            emitMempoolInfo({
-                'params': {
-                loaded: true
-                }
-            });
-
-            cy.get(':nth-child(1) > #bitcoin-block-0').should('not.exist');
-            cy.get(':nth-child(2) > #bitcoin-block-0').should('not.exist');
-            cy.get(':nth-child(3) > #bitcoin-block-0').should('not.exist');
-        });
-
-        it('loads the blocks screen', () => {
-            cy.visit('/');
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(2) > a').click().then(() => {
-                cy.waitForPageIdle();
-            });
-        });
-
-        it('loads the graphs screen', () => {
-            cy.visit('/');
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(3) > a').click().then(() => {
-                cy.wait(1000);
-            });
-        });
-
-        describe('graphs page', () => {
-          it('check buttons - mobile', () => {
-              cy.viewport('iphone-6');
-              cy.visit('/graphs');
-              cy.waitForSkeletonGone();
-              cy.get('.small-buttons > :nth-child(2)').should('be.visible');
-              cy.get('#dropdownFees').should('be.visible');
-              cy.get('.btn-group').should('be.visible');
-          });
-          it('check buttons - tablet', () => {
-            cy.viewport('ipad-2');
-            cy.visit('/graphs');
-            cy.waitForSkeletonGone();
-            cy.get('.small-buttons > :nth-child(2)').should('be.visible');
-            cy.get('#dropdownFees').should('be.visible');
-            cy.get('.btn-group').should('be.visible');
-          });
-          it('check buttons - desktop', () => {
-            cy.viewport('macbook-16');
-            cy.visit('/graphs');
-            cy.waitForSkeletonGone();
-            cy.get('.small-buttons > :nth-child(2)').should('be.visible');
-            cy.get('#dropdownFees').should('be.visible');
-            cy.get('.btn-group').should('be.visible');
-          });
-        });
-
-        it('loads the tv screen - desktop', () => {
-            cy.viewport('macbook-16');
-            cy.visit('/');
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(4) > a').click().then(() => {
-                cy.viewport('macbook-16');
-                cy.get('.chart-holder');
-                cy.get('.blockchain-wrapper').should('be.visible');
-                cy.get('#mempool-block-0').should('be.visible');
-            });
-        });
-
-        it('loads the tv screen - mobile', () => {
-            cy.viewport('iphone-6');
-            cy.visit('/tv');
-            cy.waitForSkeletonGone();
-            cy.get('.chart-holder');
-            cy.get('.blockchain-wrapper').should('not.visible');
-        });
-
-        it('loads the api screen', () => {
-            cy.visit('/');
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(5) > a').click().then(() => {
-                cy.wait(1000);
-            });
-        });
-
-        describe('blocks', () => {
-            it('shows empty blocks properly', () => {
-                cy.visit('/block/0000000000000000000bd14f744ef2e006e61c32214670de7eb891a5732ee775');
-                cy.waitForSkeletonGone();
-                cy.waitForPageIdle();
-                cy.get('h2').invoke('text').should('equal', '1 transaction');
-            });
-
-            it('expands and collapses the block details', () => {
-                cy.visit('/block/0');
-                cy.waitForSkeletonGone();
-                cy.waitForPageIdle();
-                cy.get('.btn.btn-outline-info').click().then(() => {
-                    cy.get('#details').should('be.visible');
-                });
-
-                cy.get('.btn.btn-outline-info').click().then(() => {
-                    cy.get('#details').should('not.be.visible');
-                });
-            });
-            it('shows blocks with no pagination', () => {
-                cy.visit('/block/00000000000000000001ba40caf1ad4cec0ceb77692662315c151953bfd7c4c4');
-                cy.waitForSkeletonGone();
-                cy.waitForPageIdle();
-                cy.get('.block-tx-title h2').invoke('text').should('equal', '19 transactions');
-                cy.get('.pagination-container ul.pagination').first().children().should('have.length', 5);
-            });
-
-            it('supports pagination on the block screen', () => {
-                // 41 txs
-                cy.visit('/block/00000000000000000009f9b7b0f63ad50053ad12ec3b7f5ca951332f134f83d8');
-                cy.waitForSkeletonGone();
-                cy.get('.pagination-container a').invoke('text').then((text1) => {
-                    cy.get('.active + li').first().click().then(() => {
-                        cy.waitForSkeletonGone();
-                        cy.waitForPageIdle();
-                        cy.get('.header-bg.box > a').invoke('text').then((text2) => {
-                            expect(text1).not.to.eq(text2);
-                        });
-                    });
-                });
-            });
-
-            it('shows blocks pagination with 5 pages (desktop)', () => {
-                cy.viewport(760, 800);
-                cy.visit('/block/000000000000000000049281946d26fcba7d99fdabc1feac524bc3a7003d69b3').then(() => {
-                    cy.waitForSkeletonGone();
-                    cy.waitForPageIdle();
-                });
-
-                // 5 pages + 4 buttons = 9 buttons
-                cy.get('.pagination-container ul.pagination').first().children().should('have.length', 9);
-            });
-
-            it('shows blocks pagination with 3 pages (mobile)', () => {
-                cy.viewport(669, 800);
-                cy.visit('/block/000000000000000000049281946d26fcba7d99fdabc1feac524bc3a7003d69b3').then(() => {
-                    cy.waitForSkeletonGone();
-                    cy.waitForPageIdle();
-                });
-
-                // 3 pages + 4 buttons = 7 buttons
-                cy.get('.pagination-container ul.pagination').first().children().should('have.length', 7);
-            });
-        });
-    } else {
-        it.skip(`Tests cannot be run on the selected BASE_MODULE ${baseModule}`);
-    }
-});

frontend/cypress/integration/signet/signet.spec.ts

@@ -1,139 +0,0 @@
-import { emitMempoolInfo } from "../../support/websocket";
-
-const baseModule = Cypress.env("BASE_MODULE");
-
-describe('Signet', () => {
-  beforeEach(() => {
-    cy.intercept('/api/block-height/*').as('block-height');
-    cy.intercept('/api/block/*').as('block');
-    cy.intercept('/api/block/*/txs/0').as('block-txs');
-    cy.intercept('/api/tx/*/outspends').as('tx-outspends');
-  });
-
-
-  if (baseModule === 'mempool') {
-    it('loads the dashboard', () => {
-        cy.visit('/signet');
-        cy.waitForSkeletonGone();
-    });
-
-    it('check first mempool block after skeleton loads', () => {
-      cy.visit('/');
-      cy.waitForSkeletonGone();
-      cy.get('#mempool-block-0 > .blockLink').should('exist');
-    });
-
-    it.skip('loads the dashboard with the skeleton blocks', () => {
-        cy.mockMempoolSocket();
-        cy.visit("/signet");
-        cy.get(':nth-child(1) > #bitcoin-block-0').should('be.visible');
-        cy.get(':nth-child(2) > #bitcoin-block-0').should('be.visible');
-        cy.get(':nth-child(3) > #bitcoin-block-0').should('be.visible');
-        cy.get('#mempool-block-0').should('be.visible');
-        cy.get('#mempool-block-1').should('be.visible');
-        cy.get('#mempool-block-2').should('be.visible');
-
-        emitMempoolInfo({
-            'params': {
-            "network": "signet"
-            }
-        });
-
-        cy.get(':nth-child(1) > #bitcoin-block-0').should('not.exist');
-        cy.get(':nth-child(2) > #bitcoin-block-0').should('not.exist');
-        cy.get(':nth-child(3) > #bitcoin-block-0').should('not.exist');
-    });
-
-    it('loads the blocks screen', () => {
-        cy.visit('/signet');
-        cy.waitForSkeletonGone();
-        cy.get('li:nth-of-type(2) > a').click().then(() => {
-            cy.wait(1000);
-        });
-    });
-
-    it('loads the graphs screen', () => {
-        cy.visit('/signet');
-        cy.waitForSkeletonGone();
-        cy.get('li:nth-of-type(3) > a').click().then(() => {
-            cy.wait(1000);
-        });
-    });
-
-    describe('tv mode', () => {
-        it('loads the tv screen - desktop', () => {
-            cy.viewport('macbook-16');
-            cy.visit('/signet');
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(4) > a').click().then(() => {
-                cy.get('.chart-holder').should('be.visible');
-                cy.get('#mempool-block-0').should('be.visible');
-                cy.get('.tv-only').should('not.exist');
-            });
-        });
-
-        it('loads the tv screen - mobile', () => {
-            cy.visit('/signet');
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(4) > a').click().then(() => {
-                cy.viewport('iphone-8');
-                cy.get('.chart-holder').should('be.visible');
-                //TODO: Remove comment when the bug is fixed
-                //cy.get('#mempool-block-0').should('be.visible');
-                cy.get('.tv-only').should('not.exist');
-            });
-        });
-    });
-
-
-    it('loads the api screen', () => {
-        cy.visit('/signet');
-        cy.waitForSkeletonGone();
-        cy.get('li:nth-of-type(5) > a').click().then(() => {
-            cy.wait(1000);
-        });
-    });
-
-    describe('blocks', () => {
-        it('shows empty blocks properly', () => {
-            cy.visit('/signet/block/00000133d54e4589f6436703b067ec23209e0a21b8a9b12f57d0592fd85f7a42');
-            cy.waitForSkeletonGone();
-            cy.get('h2').invoke('text').should('equal', '1 transaction');
-        });
-
-        it('expands and collapses the block details', () => {
-            cy.visit('/signet/block/0');
-            cy.waitForSkeletonGone();
-            cy.get('.btn.btn-outline-info').click().then(() => {
-                cy.get('#details').should('be.visible');
-            });
-
-            cy.get('.btn.btn-outline-info').click().then(() => {
-                cy.get('#details').should('not.be.visible');
-            });
-        });
-
-        it('shows blocks with no pagination', () => {
-            cy.visit('/signet/block/00000078f920a96a69089877b934ce7fd009ab55e3170920a021262cb258e7cc');
-            cy.waitForSkeletonGone();
-            cy.get('h2').invoke('text').should('equal', '13 transactions');
-            cy.get('ul.pagination').first().children().should('have.length', 5);
-        });
-
-        it('supports pagination on the block screen', () => {
-            // 43 txs
-            cy.visit('/signet/block/00000094bd52f73bdbfc4bece3a94c21fec2dc968cd54210496e69e4059d66a6');
-            cy.waitForSkeletonGone();
-            cy.get('.header-bg.box > a').invoke('text').then((text1) => {
-                cy.get('.active + li').first().click().then(() => {
-                    cy.get('.header-bg.box > a').invoke('text').then((text2) => {
-                        expect(text1).not.to.eq(text2);
-                    });
-                });
-            });
-        });
-    });
-    } else {
-        it.skip(`Tests cannot be run on the selected BASE_MODULE ${baseModule}`);
-    }
-  });

frontend/cypress/integration/testnet/testnet.spec.ts

@@ -1,136 +0,0 @@
-import { confirmAddress, emitMempoolInfo, sendWsMock, showNewTx, startTrackingAddress } from "../../support/websocket";
-
-const baseModule = Cypress.env("BASE_MODULE");
-
-describe('Testnet', () => {
-  beforeEach(() => {
-    cy.intercept('/api/block-height/*').as('block-height');
-    cy.intercept('/api/block/*').as('block');
-    cy.intercept('/api/block/*/txs/0').as('block-txs');
-    cy.intercept('/api/tx/*/outspends').as('tx-outspends');
-  });
-
-  if (baseModule === 'mempool') {
-
-    it('loads the dashboard', () => {
-        cy.visit('/testnet');
-        cy.waitForSkeletonGone();
-    });
-
-    it('check first mempool block after skeleton loads', () => {
-      cy.visit('/');
-      cy.waitForSkeletonGone();
-      cy.get('#mempool-block-0 > .blockLink').should('exist');
-    });
-
-    it.skip('loads the dashboard with the skeleton blocks', () => {
-        cy.mockMempoolSocket();
-        cy.visit("/testnet");
-        cy.get(':nth-child(1) > #bitcoin-block-0').should('be.visible');
-        cy.get(':nth-child(2) > #bitcoin-block-0').should('be.visible');
-        cy.get(':nth-child(3) > #bitcoin-block-0').should('be.visible');
-        cy.get('#mempool-block-0').should('be.visible');
-        cy.get('#mempool-block-1').should('be.visible');
-        cy.get('#mempool-block-2').should('be.visible');
-
-        emitMempoolInfo({
-            'params': {
-            loaded: true
-            }
-        });
-
-        cy.get(':nth-child(1) > #bitcoin-block-0').should('not.exist');
-        cy.get(':nth-child(2) > #bitcoin-block-0').should('not.exist');
-        cy.get(':nth-child(3) > #bitcoin-block-0').should('not.exist');
-    });
-
-    it('loads the blocks screen', () => {
-        cy.visit('/testnet');
-        cy.waitForSkeletonGone();
-        cy.get('li:nth-of-type(2) > a').click().then(() => {
-            cy.wait(1000);
-        });
-    });
-
-    it('loads the graphs screen', () => {
-        cy.visit('/testnet');
-        cy.waitForSkeletonGone();
-        cy.get('li:nth-of-type(3) > a').click().then(() => {
-            cy.wait(1000);
-        });
-    });
-
-    describe('tv mode', () => {
-        it('loads the tv screen - desktop', () => {
-            cy.viewport('macbook-16');
-            cy.visit('/testnet');
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(4) > a').click().then(() => {
-                cy.wait(1000);
-                cy.get('.tv-only').should('not.exist');
-            });
-        });
-
-        it('loads the tv screen - mobile', () => {
-            cy.visit('/testnet');
-            cy.waitForSkeletonGone();
-            cy.get('li:nth-of-type(4) > a').click().then(() => {
-                cy.viewport('iphone-6');
-                cy.wait(1000);
-                cy.get('.tv-only').should('not.exist');
-            });
-        });
-    });
-
-
-    it('loads the api screen', () => {
-        cy.visit('/testnet');
-        cy.waitForSkeletonGone();
-        cy.get('li:nth-of-type(5) > a').click().then(() => {
-            cy.wait(1000);
-        });
-    });
-
-    describe('blocks', () => {
-        it('shows empty blocks properly', () => {
-            cy.visit('/testnet/block/0');
-            cy.waitForSkeletonGone();
-            cy.get('h2').invoke('text').should('equal', '1 transaction');
-        });
-
-        it('expands and collapses the block details', () => {
-            cy.visit('/testnet/block/0');
-            cy.waitForSkeletonGone();
-            cy.get('.btn.btn-outline-info').click().then(() => {
-                cy.get('#details').should('be.visible');
-            });
-
-            cy.get('.btn.btn-outline-info').click().then(() => {
-                cy.get('#details').should('not.be.visible');
-            });
-        });
-
-        it('shows blocks with no pagination', () => {
-            cy.visit('/testnet/block/000000000000002f8ce27716e74ecc7ad9f7b5101fed12d09e28bb721b9460ea');
-            cy.waitForSkeletonGone();
-            cy.get('h2').invoke('text').should('equal', '11 transactions');
-            cy.get('ul.pagination').first().children().should('have.length', 5);
-        });
-
-        it('supports pagination on the block screen', () => {
-            // 48 txs
-            cy.visit('/testnet/block/000000000000002ca3878ebd98b313a1c2d531f2e70a6575d232ca7564dea7a9');
-            cy.waitForSkeletonGone();
-            cy.get('.header-bg.box > a').invoke('text').then((text1) => {
-                cy.get('.active + li').first().click().then(() => {
-                    cy.get('.header-bg.box > a').invoke('text').then((text2) => {
-                        expect(text1).not.to.eq(text2);
-                    });
-                });
-            });
-        });
-    });
-    } else {
-        it.skip(`Tests cannot be run on the selected BASE_MODULE ${baseModule}`);
-    }
-  });

frontend/cypress/plugins/index.js

@@ -1,13 +0,0 @@
-const fs = require('fs');
-
-const CONFIG_FILE = 'mempool-frontend-config.json';
-
-module.exports = (on, config) => {
-  if (fs.existsSync(CONFIG_FILE)) {
-    let contents = JSON.parse(fs.readFileSync(CONFIG_FILE, 'utf8'));
-    config.env.BASE_MODULE = contents.BASE_MODULE ? contents.BASE_MODULE : 'mempool';
-  } else {
-    config.env.BASE_MODULE = 'mempool';
-  }
-  return config;
-}

frontend/cypress/support/PageIdleDetector.ts

@@ -1,63 +0,0 @@
-// source: chrisp_68 @ https://stackoverflow.com/questions/50525143/how-do-you-reliably-wait-for-page-idle-in-cypress-io-test
-export class PageIdleDetector
-{   
-    defaultOptions: Object = { timeout: 60000 };
-
-    public WaitForPageToBeIdle(): void
-    {
-        this.WaitForPageToLoad();
-        this.WaitForAngularRequestsToComplete();
-        this.WaitForAngularDigestCycleToComplete();
-        this.WaitForAnimationsToStop();
-    }
-
-    public WaitForPageToLoad(options: Object = this.defaultOptions): void
-    {
-        cy.document(options).should((myDocument: any) =>
-        {
-            expect(myDocument.readyState, "WaitForPageToLoad").to.be.oneOf(["interactive", "complete"]);
-        });
-    }
-
-    public WaitForAngularRequestsToComplete(options: Object = this.defaultOptions): void
-    {
-        cy.window(options).should((myWindow: any) =>
-        {
-            if (!!myWindow.angular)
-            {
-                expect(this.NumberOfPendingAngularRequests(myWindow), "WaitForAngularRequestsToComplete").to.have.length(0);
-            }
-        });
-    }
-
-    public WaitForAngularDigestCycleToComplete(options: Object = this.defaultOptions): void
-    {
-        cy.window(options).should((myWindow: any) =>
-        {
-            if (!!myWindow.angular)
-            {
-                expect(this.AngularRootScopePhase(myWindow), "WaitForAngularDigestCycleToComplete").to.be.null;
-            }
-        });
-    }
-
-    public WaitForAnimationsToStop(options: Object = this.defaultOptions): void
-    {
-        cy.get(":animated", options).should("not.exist");
-    }
-
-    private getInjector(myWindow: any)
-    {
-        return myWindow.angular.element(myWindow.document.body).injector();
-    }
-
-    private NumberOfPendingAngularRequests(myWindow: any)
-    {
-        return this.getInjector(myWindow).get('$http').pendingRequests;
-    }
-
-    private AngularRootScopePhase(myWindow: any)
-    {
-        return this.getInjector(myWindow).get("$rootScope").$$phase;
-    }
-}

frontend/cypress/support/commands.ts

@@ -1,147 +0,0 @@
-// ***********************************************
-// This example namespace declaration will help
-// with Intellisense and code completion in your
-// IDE or Text Editor.
-// ***********************************************
-// declare namespace Cypress {
-//   interface Chainable<Subject = any> {
-//     customCommand(param: any): typeof customCommand;
-//   }
-// }
-//
-// function customCommand(param: any): void {
-//   console.warn(param);
-// }
-//
-// NOTE: You can use it like so:
-// Cypress.Commands.add('customCommand', customCommand);
-//
-// ***********************************************
-// This example commands.js shows you how to
-// create various custom commands and overwrite
-// existing commands.
-//
-// For more comprehensive examples of custom
-// commands please read more here:
-// https://on.cypress.io/custom-commands
-// ***********************************************
-//
-//
-// -- This is a parent command --
-// Cypress.Commands.add("login", (email, password) => { ... })
-//
-//
-// -- This is a child command --
-// Cypress.Commands.add("drag", { prevSubject: 'element'}, (subject, options) => { ... })
-//
-//
-// -- This is a dual command --
-// Cypress.Commands.add("dismiss", { prevSubject: 'optional'}, (subject, options) => { ... })
-//
-//
-// -- This will overwrite an existing command --
-// Cypress.Commands.overwrite("visit", (originalFn, url, options) => { ... })
-
-'use strict'
-
-import 'cypress-wait-until';
-import { PageIdleDetector } from './PageIdleDetector';
-import { mockWebSocket } from './websocket';
-
-/* global Cypress */
-const codes = {
-    ArrowLeft: 37,
-    ArrowUp: 38,
-    ArrowRight: 39,
-    ArrowDown: 40
-}
-
-Cypress.Commands.add('waitForSkeletonGone', () => {
-    cy.waitUntil(() => {
-        return Cypress.$('.skeleton-loader').length === 0;
-    }, { verbose: true, description: "waitForSkeletonGone", errorMsg: "skeleton loaders never went away", timeout: 15000, interval: 50});
-});
-
-Cypress.Commands.add(
-    "waitForPageIdle",
-    () => {
-        console.warn("Waiting for page idle state");
-        const pageIdleDetector = new PageIdleDetector();
-        pageIdleDetector.WaitForPageToBeIdle();
-    }
-);
-
-Cypress.Commands.add('mockMempoolSocket', () => {
-  mockWebSocket();
-});
-
-Cypress.Commands.add('changeNetwork', (network: "testnet"|"signet"|"liquid"|"bisq"|"mainnet" ) => {
-    cy.get('.dropdown-toggle').click().then(() => {
-        cy.get(`.${network}`).click().then(() => {
-            cy.waitForPageIdle();
-            if(network !== 'bisq'){
-                cy.waitForSkeletonGone();
-            }
-        });
-    });
-});
-
-// https://github.com/bahmutov/cypress-arrows/blob/8f0303842a343550fbeaf01528d01d1ff213b70c/src/index.js
-function keydownCommand ($el, key) {
-    const message = `sending the "${key}" keydown event`
-    const log = Cypress.log({
-      name: `keydown: ${key}`,
-      message: message,
-      consoleProps: function () {
-        return {
-          Subject: $el
-        }
-      }
-    })
-  
-    const e = $el.createEvent('KeyboardEvent')
-  
-    Object.defineProperty(e, 'key', {
-      get: function () {
-        return key
-      }
-    })
-  
-    Object.defineProperty(e, 'keyCode', {
-      get: function () {
-        return this.keyCodeVal
-      }
-    })
-    Object.defineProperty(e, 'which', {
-      get: function () {
-        return this.keyCodeVal
-      }
-    })
-    var metaKey = false
-  
-    Object.defineProperty(e, 'metaKey', {
-      get: function () {
-        return metaKey
-      }
-    })
-  
-    Object.defineProperty(e, 'shiftKey', {
-      get: function () {
-        return false
-      }
-    })
-    e.keyCodeVal = codes[key]
-  
-    e.initKeyboardEvent('keydown', true, true,
-      $el.defaultView, false, false, false, false, e.keyCodeVal, e.keyCodeVal)
-  
-    $el.dispatchEvent(e)
-    log.snapshot().end()
-    return $el
-  }
-  
-  Cypress.Commands.add('keydown', { prevSubject: "dom" }, keydownCommand)
-  Cypress.Commands.add('left', { prevSubject: "dom" }, $el => keydownCommand($el, 'ArrowLeft'))
-  Cypress.Commands.add('right', { prevSubject: "dom" }, $el => keydownCommand($el, 'ArrowRight'))
-  Cypress.Commands.add('up', { prevSubject: "dom" }, $el => keydownCommand($el, 'ArrowUp'))
-  Cypress.Commands.add('down', { prevSubject: "dom" }, $el => keydownCommand($el, 'ArrowDown'))

frontend/cypress/support/index.d.ts

@@ -1,10 +0,0 @@
-
-/// <reference types="cypress" />
-declare namespace Cypress {
-    interface Chainable<Subject> {
-        waitForSkeletonGone(): Chainable<any>
-        waitForPageIdle(): Chainable<any>
-        mockMempoolSocket(): Chainable<any>
-        changeNetwork(network: "testnet"|"signet"|"liquid"|"bisq"|"mainnet"): Chainable<any>
-    }
-}

frontend/cypress/support/index.ts

@@ -1,20 +0,0 @@
-// ***********************************************************
-// This example support/index.js is processed and
-// loaded automatically before your test files.
-//
-// This is a great place to put global configuration and
-// behavior that modifies Cypress.
-//
-// You can change the location of this file or turn off
-// automatically serving support files with the
-// 'supportFile' configuration option.
-//
-// You can read more here:
-// https://on.cypress.io/configuration
-// ***********************************************************
-
-// When a command from ./commands is ready to use, import with `import './commands'` syntax
-import './commands';
-import failOnConsoleError from 'cypress-fail-on-console-error';
-
-failOnConsoleError();

frontend/cypress/support/websocket.ts

@@ -1,92 +0,0 @@
-import { v4 as uuid } from 'uuid';
-import { WebSocket, Server } from 'mock-socket';
-
-declare global {
-	interface Window {
-		mockServer: Server;
-		mockSocket: WebSocket;
-	}
-}
-
-const mocks: { [key: string]: { server: Server; websocket: WebSocket } } = {};
-
-const cleanupMock = (url: string) => {
-	if (mocks[url]) {
-		mocks[url].websocket.close();
-		mocks[url].server.stop();
-		delete mocks[url];
-	}
-};
-
-const createMock = (url: string) => {
-	cleanupMock(url);
-	const server = new Server(url);
-	const websocket = new WebSocket(url);
-	mocks[url] = { server, websocket };
-
-	return mocks[url];
-};
-
-export const mockWebSocket = () => {
-	cy.on('window:before:load', (win) => {
-		const winWebSocket = win.WebSocket;
-		cy.stub(win, 'WebSocket').callsFake((url) => {
-            console.log(url);
-			if ((new URL(url).pathname.indexOf('/sockjs-node/') !== 0)) {
-				const { server, websocket } = createMock(url);
-
-				win.mockServer = server;
-				win.mockServer.on('connection', (socket) => {
-					win.mockSocket = socket;
-                    win.mockSocket.send('{"action":"init"}');
-				});
-
-                win.mockServer.on('message', (message) => {
-                    console.log(message);
-                });
-
-				return websocket;
-			} else {
-				return new winWebSocket(url);
-			}
-		});
-	});
-
-	cy.on('window:before:unload', () => {
-		for (const url in mocks) {
-			cleanupMock(url);
-		}
-	});
-};
-
-export const emitMempoolInfo = ({
-	params
-}: { params?: any } = {}) => {
-	cy.window().then((win) => {
-		//TODO: Refactor to take into account different parameterized mocking scenarios
-		switch (params.network) {
-			//TODO: Use network specific mocks
-			case "signet":
-			case "testnet":
-			default:
-				win.mockSocket.send('{"action":"init"}');
-				win.mockSocket.send('{"action":"want","data":["blocks","stats","mempool-blocks","live-2h-chart"]}');
-				win.mockSocket.send('{"conversions":{"USD":32365.338815782445}}');
-				cy.readFile('cypress/fixtures/mainnet_live2hchart.json', 'ascii').then((fixture) => {
-					win.mockSocket.send(JSON.stringify(fixture));
-				});
-				cy.readFile('cypress/fixtures/mainnet_mempoolInfo.json', 'ascii').then((fixture) => {
-					win.mockSocket.send(JSON.stringify(fixture));
-				});
-		}
-	});
-    cy.waitForSkeletonGone();
-    return cy.get('#mempool-block-0');
-};
-
-export const dropWebSocket = (() => {
-    cy.window().then((win) => {
-        win.mockServer.simulate("error");
-    });
-    return cy.wait(500);
-});

frontend/cypress/tsconfig.json

@@ -1,10 +0,0 @@
-{
-  "extends": "../tsconfig.json",
-  "include": ["**/*.ts"],
-  "compilerOptions": {
-    "types": ["cypress"],
-    "lib": ["es2015", "dom"],
-    "allowJs": true,
-    "noEmit": true,
-  }
-}

frontend/e2e/protractor.conf.js

@@ -0,0 +1,28 @@
+// Protractor configuration file, see link for more information
+// https://github.com/angular/protractor/blob/master/lib/config.ts
+
+const { SpecReporter } = require('jasmine-spec-reporter');
+
+exports.config = {
+  allScriptsTimeout: 11000,
+  specs: [
+    './src/**/*.e2e-spec.ts'
+  ],
+  capabilities: {
+    'browserName': 'chrome'
+  },
+  directConnect: true,
+  baseUrl: 'http://localhost:4200/',
+  framework: 'jasmine',
+  jasmineNodeOpts: {
+    showColors: true,
+    defaultTimeoutInterval: 30000,
+    print: function() {}
+  },
+  onPrepare() {
+    require('ts-node').register({
+      project: require('path').join(__dirname, './tsconfig.e2e.json')
+    });
+    jasmine.getEnv().addReporter(new SpecReporter({ spec: { displayStacktrace: true } }));
+  }
+};