Merge branch 'master' into mononaut/persistent-goggles

frontend/src/app/shared/components/global-footer/global-footer.component.html

@@ -79,7 +79,7 @@
           <p class="category" i18n="footer.networks">Networks</p>
           <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== '') && (currentNetwork !== 'mainnet')"><a [href]="networkLink('mainnet')" i18n="footer.mainnet-explorer">Mainnet Explorer</a></p>
           <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== 'testnet') && env.TESTNET_ENABLED"><a [href]="networkLink('testnet')" i18n="footer.testnet3-explorer">Testnet3 Explorer</a></p>
-          <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== 'testnet4') && env.TESTNET4_ENABLED"><a [href]="networkLink('testnet4')" i18n="footer.testnet4-explorer">Testnet4 Explorer</a> <span class="badge badge-pill badge-warning beta-network" i18n="beta">beta</span></p>
+          <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== 'testnet4') && env.TESTNET4_ENABLED"><a [href]="networkLink('testnet4')" i18n="footer.testnet4-explorer">Testnet4 Explorer</a></p>
           <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== 'signet') && env.SIGNET_ENABLED"><a [href]="networkLink('signet')" i18n="footer.signet-explorer">Signet Explorer</a></p>
           <p *ngIf="(officialMempoolSpace || env.LIQUID_ENABLED) && (currentNetwork !== 'liquidtestnet')"><a [href]="networkLink('liquidtestnet')" i18n="footer.liquid-testnet-explorer">Liquid Testnet Explorer</a></p>
           <p *ngIf="(officialMempoolSpace || env.LIQUID_ENABLED) && (currentNetwork !== 'liquid')"><a [href]="networkLink('liquid')" i18n="footer.liquid-explorer">Liquid Explorer</a></p>

frontend/src/app/shared/shared.module.ts

@@ -100,6 +100,7 @@ import { MempoolErrorComponent } from './components/mempool-error/mempool-error.
 import { AccelerationsListComponent } from '../components/acceleration/accelerations-list/accelerations-list.component';
 import { PendingStatsComponent } from '../components/acceleration/pending-stats/pending-stats.component';
 import { AccelerationStatsComponent } from '../components/acceleration/acceleration-stats/acceleration-stats.component';
+import { AccelerationSparklesComponent } from '../components/acceleration/sparkles/acceleration-sparkles.component';
 
 import { BlockViewComponent } from '../components/block-view/block-view.component';
 import { EightBlocksComponent } from '../components/eight-blocks/eight-blocks.component';
@@ -225,6 +226,7 @@ import { OnlyVsizeDirective, OnlyWeightDirective } from './components/weight-dir
     AccelerationsListComponent,
     AccelerationStatsComponent,
     PendingStatsComponent,
+    AccelerationSparklesComponent,
     HttpErrorComponent,
     TwitterWidgetComponent,
     FaucetComponent,
@@ -355,6 +357,7 @@ import { OnlyVsizeDirective, OnlyWeightDirective } from './components/weight-dir
     AccelerationsListComponent,
     AccelerationStatsComponent,
     PendingStatsComponent,
+    AccelerationSparklesComponent,
     HttpErrorComponent,
     TwitterWidgetComponent,
     TwitterLogin,

frontend/src/app/shared/transaction.utils.ts

@@ -1,7 +1,7 @@
 import { TransactionFlags } from './filters.utils';
 import { getVarIntLength, opcodes, parseMultisigScript, isPoint } from './script.utils';
 import { Transaction } from '../interfaces/electrs.interface';
-import { CpfpInfo, RbfInfo } from '../interfaces/node-api.interface';
+import { CpfpInfo, RbfInfo, TransactionStripped } from '../interfaces/node-api.interface';
 
 // Bitcoin Core default policy settings
 const TX_MAX_STANDARD_VERSION = 2;
@@ -458,4 +458,83 @@ export function getUnacceleratedFeeRate(tx: Transaction, accelerated: boolean):
   } else {
     return tx.effectiveFeePerVsize;
   }
+}
+
+export function identifyPrioritizedTransactions(transactions: TransactionStripped[]): { prioritized: string[], deprioritized: string[] } {
+  // find the longest increasing subsequence of transactions
+  // (adapted from https://en.wikipedia.org/wiki/Longest_increasing_subsequence#Efficient_algorithms)
+  // should be O(n log n)
+  const X = transactions.slice(1).reverse(); // standard block order is by *decreasing* effective fee rate, but we want to iterate in increasing order (and skip the coinbase)
+  if (X.length < 2) {
+    return { prioritized: [], deprioritized: [] };
+  }
+  const N = X.length;
+  const P: number[] = new Array(N);
+  const M: number[] = new Array(N + 1);
+  M[0] = -1; // undefined so can be set to any value
+
+  let L = 0;
+  for (let i = 0; i < N; i++) {
+    // Binary search for the smallest positive l ≤ L
+    // such that X[M[l]].effectiveFeePerVsize > X[i].effectiveFeePerVsize
+    let lo = 1;
+    let hi = L + 1;
+    while (lo < hi) {
+      const mid = lo + Math.floor((hi - lo) / 2); // lo <= mid < hi
+      if (X[M[mid]].rate > X[i].rate) {
+        hi = mid;
+      } else { // if X[M[mid]].effectiveFeePerVsize < X[i].effectiveFeePerVsize
+        lo = mid + 1;
+      }
+    }
+
+    // After searching, lo == hi is 1 greater than the
+    // length of the longest prefix of X[i]
+    const newL = lo;
+
+    // The predecessor of X[i] is the last index of
+    // the subsequence of length newL-1
+    P[i] = M[newL - 1];
+    M[newL] = i;
+
+    if (newL > L) {
+      // If we found a subsequence longer than any we've
+      // found yet, update L
+      L = newL;
+    }
+  }
+
+  // Reconstruct the longest increasing subsequence
+  // It consists of the values of X at the L indices:
+  // ..., P[P[M[L]]], P[M[L]], M[L]
+  const LIS: TransactionStripped[] = new Array(L);
+  let k = M[L];
+  for (let j = L - 1; j >= 0; j--) {
+    LIS[j] = X[k];
+    k = P[k];
+  }
+
+  const lisMap = new Map<string, number>();
+  LIS.forEach((tx, index) => lisMap.set(tx.txid, index));
+
+  const prioritized: string[] = [];
+  const deprioritized: string[] = [];
+
+  let lastRate = 0;
+
+  for (const tx of X) {
+    if (lisMap.has(tx.txid)) {
+      lastRate = tx.rate;
+    } else {
+      if (Math.abs(tx.rate - lastRate) < 0.1) {
+        // skip if the rate is almost the same as the previous transaction
+      } else if (tx.rate <= lastRate) {
+        prioritized.push(tx.txid);
+      } else {
+        deprioritized.push(tx.txid);
+      }
+    }
+  }
+
+  return { prioritized, deprioritized };
 }