mempool/frontend/src/app/components/accelerate-checkout/accelerate-checkout.component.html

<div class="box card w-100" style="background: var(--box-bg)" id=acceleratePreviewAnchor>

  @if (error) {
    <div class="mt-2">
      <app-mempool-error [error]="error"></app-mempool-error>
    </div>
  } 
  @else if (step === 'quote') {
    <span id="successAlert" class="m-0 p-0 d-block" style="height: 1px;"></span>
    <div class="row" *ngIf="showSuccess">
      <div class="col">
        <div class="alert alert-success">
          Transaction has now been <a class="alert-link" routerLink="/services/accelerator/history">submitted</a> to mining pools for acceleration.
        </div>
      </div>
    </div>

    <span id="mempoolError" class="m-0 p-0 d-block" style="height: 1px;"></span>
    <div class="row" *ngIf="error">
      <div class="col">
        <app-mempool-error [error]="error" [alertClass]="error === 'waitlisted' ? 'alert-mempool' : 'alert-danger'"></app-mempool-error>
      </div>
    </div>

    <div class="accelerate-cols">
      <ng-container *ngIf="!isMobile">
        <app-accelerate-fee-graph
          [tx]="tx"
          [estimate]="estimate"
          [showEstimate]="isLoggedIn()"
          [maxRateOptions]="maxRateOptions"
          [maxRateIndex]="selectFeeRateIndex"
          (setUserBid)="setUserBid($event)"
        ></app-accelerate-fee-graph>
      </ng-container>

      <ng-container *ngIf="estimate else loadingEstimate">
        <div [class]="{estimateDisabled: error || showSuccess }">
          <button class="btn btn-sm btn-outline-info float-right" (click)="showDetails = !showDetails">Details</button>

          <div *ngIf="user && !estimate.hasAccess">
            <div class="alert alert-mempool">You are currently on the waitlist</div>
          </div>

          @if (showDetails) {
            <h5 class="mb-4" i18n="accelerator.your-transaction">Your transaction</h5>
            <div class="row">
              <div class="col">
                <small *ngIf="hasAncestors" class="form-text text-muted mb-2">
                  <ng-container i18n="accelerator.plus-unconfirmed-ancestors">Plus {{ estimate.txSummary.ancestorCount - 1 }} unconfirmed ancestor(s)</ng-container>
                </small>
                <table class="table table-borderless table-border table-dark table-background table-accelerator">
                  <tbody>
                    <tr class="group-first">
                      <td class="item" i18n="transaction.vsize|Transaction Virtual Size">Virtual size</td>
                      <td style="text-align: end;" [innerHTML]="'&lrm;' + (estimate.txSummary.effectiveVsize | vbytes: 2)"></td>
                    </tr>
                    <tr class="info">
                      <td class="info" colspan=3>
                        <i><small i18n="accelerator.transaction-vbytes-size-description">Size in vbytes of this transaction (including unconfirmed ancestors)</small></i>
                      </td>
                    </tr>
                    <tr>
                      <td class="item" i18n="accelerator.in-band-fees">In-band fees</td>
                      <td style="text-align: end;">
                        {{ estimate.txSummary.effectiveFee | number : '1.0-0' }} <span class="symbol" i18n="shared.sats">sats</span>
                      </td>
                    </tr>
                    <tr class="info group-last">
                      <td class="info" colspan=3>
                        <i><small i18n="accelerator.fees-already-paid-description">Fees already paid by this transaction (including unconfirmed ancestors)</small></i>
                      </td>
                    </tr>
                  </tbody>
                </table>
              </div>
            </div>
            <br>
          }
          <h5 *ngIf="estimate?.pools?.length" i18n="accelerator.how-much-faster">How much faster?</h5>
          <div class="row">
            <div class="col">
              <ng-container *ngIf="(etaInfo$ | async) as etaInfo; else loadingEstimate">
                <small class="form-text text-muted mb-2" i18n="accelerator.hashrate-percentage-description">Your transaction will be prioritized by up to <strong>{{ etaInfo.hashratePercentage | number : '1.1-1' }}%</strong> of miners.</small>
                <small class="form-text text-muted mb-2" i18n="accelerator.time-estimate-description">This will reduce your expected waiting time until the first confirmation to <strong><app-time kind="within" [time]="etaInfo.acceleratedETA" [fastRender]="false" [fixedRender]="true"></app-time></strong></small>
              </ng-container>
            </div>
            <div class="col pie">
              <app-active-acceleration-box [miningStats]="miningStats" [pools]="estimate.pools" [chartOnly]="true"></app-active-acceleration-box>
            </div>
          </div>
          <div class="row">
            <div class="col">
              <div class="form-group">
                <div class="fee-card">
                  <div class="d-flex mb-0">
                    <ng-container *ngFor="let option of maxRateOptions">
                      <button type="button" class="btn btn-primary flex-grow-1 btn-border btn-sm feerate" [class]="{active: selectFeeRateIndex === option.index}" (click)="setUserBid(option)">
                        <span class="fee">{{ option.fee + estimate.mempoolBaseFee + estimate.vsizeFee | number }} <span class="symbol" i18n="shared.sats">sats</span></span>
                        <span class="rate">~<app-fee-rate [fee]="option.rate" rounding="1.0-0"></app-fee-rate></span>
                      </button>
                    </ng-container>
                  </div>
                </div>
              </div>
            </div>
          </div>

          <h5>Summary</h5>
          <div class="row">
            <div class="col">
              <table class="table table-borderless table-border table-dark table-background table-accelerator">
                <tbody>
                  <!-- ESTIMATED FEE -->
                  <ng-container *ngIf="showDetails">
                    <tr class="group-first">
                      <td class="item" i18n="accelerator.next-block-rate">Next block market rate</td>
                      <td class="amt" style="font-size: 16px">
                        {{ estimate.targetFeeRate | number : '1.0-0' }}
                      </td>
                      <td class="units"><span class="symbol" i18n="shared.sat-vbyte|sat/vB">sat/vB</span></td>
                    </tr>
                    <tr class="info">
                      <td class="info">
                        <i><small i18n="accelerator.estimated-extra-fee-required">Estimated extra fee required</small></i>
                      </td>
                      <td class="amt">
                        {{ math.max(0, estimate.nextBlockFee - estimate.txSummary.effectiveFee) | number }}
                      </td>
                      <td class="units">
                        <span class="symbol" i18n="shared.sats">sats</span>
                        <span class="fiat ml-1"><app-fiat [value]="math.max(0, estimate.nextBlockFee - estimate.txSummary.effectiveFee)"></app-fiat></span>
                      </td>
                    </tr>

                    <!-- MEMPOOL BASE FEE -->
                    <tr>
                      <td class="item" i18n="accelerator.mempool-accelerator-fees">Mempool Accelerator™ fees</td>
                    </tr>
                    <tr class="info" [class.group-last]="!estimate.vsizeFee" [class.dashed-bottom]="!estimate.vsizeFee">
                      <td class="info">
                        <i><small i18n="accelerator.service-fee">Accelerator Service Fee</small></i>
                      </td>
                      <td class="amt">
                        +{{ estimate.mempoolBaseFee | number }}
                      </td>
                      <td class="units">
                        <span class="symbol" i18n="shared.sats">sats</span>
                        <span class="fiat ml-1"><app-fiat [value]="estimate.mempoolBaseFee"></app-fiat></span>
                      </td>
                    </tr>
                    <tr class="info group-last dashed-bottom" *ngIf="estimate.vsizeFee">
                      <td class="info">
                        <i><small i18n="accelerator.tx-size-surcharge">Transaction Size Surcharge</small></i>
                      </td>
                      <td class="amt">
                        +{{ estimate.vsizeFee | number }}
                      </td>
                      <td class="units">
                        <span class="symbol" i18n="shared.sats">sats</span>
                        <span class="fiat ml-1"><app-fiat [value]="estimate.vsizeFee"></app-fiat></span>
                      </td>
                    </tr>
                  </ng-container>

                  <!-- NEXT BLOCK ESTIMATE -->
                  <ng-container *ngIf="isLoggedIn()">
                    <tr class="group-first">
                      <td class="item">
                        <b style="background-color: #5E35B1" class="p-1 pl-0" i18n="accelerator.estimated-cost">Estimated acceleration cost</b> ~{{ estimate.targetFeeRate | number : '1.0-0' }} sat/vB
                      </td>
                      <td class="amt">
                        <span style="background-color: #5E35B1" class="p-1 pl-0">
                          {{ estimate.cost + estimate.mempoolBaseFee + estimate.vsizeFee | number }}
                        </span>
                      </td>
                      <td class="units">
                        <span class="symbol" i18n="shared.sats">sats</span>
                        <span class="fiat ml-1"><app-fiat [value]="estimate.cost + estimate.mempoolBaseFee + estimate.vsizeFee"></app-fiat></span>
                      </td>
                    </tr>
                  </ng-container>

                  <!-- MAX COST -->
                  <ng-container>
                    <tr class="group-first" [class.group-last]="!isLoggedIn() || estimate.userBalance >= cost">
                      <td class="item">
                        @if (isLoggedIn()) {
                          <b style="background-color: var(--primary);" class="p-1 pl-0" i18n="accelerator.maximum-cost">Maximum acceleration cost</b>
                        } @else {
                          <b style="background-color: var(--primary);" class="p-1 pl-0" i18n="accelerator.cost">Acceleration cost</b>
                        }
                      </td>
                      <td class="amt">
                        <span style="background-color: var(--primary)" class="p-1 pl-0">
                          {{ cost | number }}
                        </span>
                      </td>
                      <td class="units">
                        <span class="symbol" i18n="shared.sats">sats</span>
                        <span class="fiat ml-1">
                          <app-fiat [value]="cost" [colorClass]="isLoggedIn() && estimate.userBalance < cost ? 'red-color' : 'green-color'"></app-fiat>
                        </span>
                      </td>
                    </tr>
                  </ng-container>

                  <!-- USER BALANCE -->
                  <ng-container *ngIf="isLoggedIn() && estimate.userBalance < cost">
                    <tr class="group-first group-last dashed-top">
                      <td class="item" i18n="accelerator.available-balance">Available balance</td>
                      <td class="amt">
                        {{ estimate.userBalance | number }}
                      </td>
                      <td class="units">
                        <span class="symbol" i18n="shared.sats">sats</span>
                        <span class="fiat ml-1">
                          <app-fiat [value]="estimate.userBalance" [colorClass]="estimate.userBalance < cost ? 'red-color' : 'green-color'"></app-fiat>
                        </span>
                      </td>
                    </tr>
                  </ng-container>

                  <tr class="group-first group-last" style="border-top: 1px dashed grey">
                    <td class="item"></td>
                    <td colspan="2">
                      <div class="d-flex">
                        <button type="button" class="mt-1 btn btn-purple rounded-pill align-self-center d-flex flex-row justify-content-center align-items-center" style="width: 200px" (click)="accelerate()">
                          <img src="/resources/mempool-accelerator-sparkles-light.svg" height="20" class="mr-2" style="margin-left: -10px">
                          <span>Accelerate</span>
                        </button>
                      </div>
                    </td>
                  </tr>
                </tbody>
              </table>
            </div>
          </div>
        </div>
      </ng-container>
    </div>

    <ng-template #loadingEstimate>
      <div class="skeleton-loader"></div>
      <br>
    </ng-template>
  }
  @else if (step === 'summary') {
    <!-- Show A/B CTAs -->
    <div class="row mb-1">
      <div class="col-sm">
        <h1 style="font-size: larger;"><ng-content select="[slot='cta-title']"></ng-content><span class="default-slot">Accelerate your Bitcoin transaction?</span></h1>
      </div>
    </div>

    <form>
      <div class="row">
        <div class="col-md">
          <div class="form-group form-check mb-2">
            <input type="radio" [checked]="choosenOption === 'wait'"  class="form-check-input" id="wait" name="accel" (change)="selectedOptionChanged($event)">
            <label class="form-check-label d-flex flex-column" for="wait">
              <span class="font-weight-bold">Wait</span>
              @if (eta.blocks < 7) {
                <span class="checkout-text">Confirmation expected <app-time kind="within" [time]="eta.time" [fastRender]="false" [fixedRender]="true"></app-time></span>
              } @else {
                <span class="checkout-text">
                  <span>Confirmation expected within several hours</span>
                </span>
              }
            </label>
          </div>
        </div>
        <div class="col-md">
          <div class="form-group form-check mb-2" *ngIf="estimate">
            <input type="radio" [checked]="choosenOption === 'accel'" class="form-check-input" id="accel" name="accel" (change)="selectedOptionChanged($event)">
            <label class="form-check-label d-flex flex-column" for="accel">
              <span><b>Accelerate</b> to ~{{ ((userBid + estimate.txSummary.effectiveFee) / estimate.txSummary.effectiveVsize) | number : '1.0-0' }} sat/vB <button *ngIf="advancedEnabled && isLoggedIn()" class="btn btn-sm btn-accelerate btn-small-height ml-3" i18n="accelerator.customize" (click)="moveToStep('quote')">customize</button></span>
              <span class="checkout-text" *ngIf="(etaInfo$ | async) as etaInfo">Confirmation expected <app-time kind="within" [time]="etaInfo.acceleratedETA" [fastRender]="false" [fixedRender]="true"></app-time><br>
                @if (!calculating) {
                  <app-fiat [value]="cost"></app-fiat>fee (<span><small style="font-family: monospace;">{{ cost | number }}</small>&nbsp;<span class="symbol" i18n="shared.sats">sats</span></span>)
                } @else {
                  <span class="estimating">Calculating cost...</span>
                }
              </span>
            </label>
          </div>
        </div>
        <div class="col-md pie d-none d-lg-flex" *ngIf="estimate && !forceMobile">
          <small class="form-text text-muted mb-2" i18n="accelerator.hashrate-percentage-description" *ngIf="(etaInfo$ | async) as etaInfo">Your transaction will be prioritized by up to {{ etaInfo.hashratePercentage | number : '1.1-1' }}% of miners.</small>
          <app-active-acceleration-box [miningStats]="miningStats" [pools]="estimate.pools" [chartOnly]="true"></app-active-acceleration-box>
        </div>
      </div>
      <div class="row mt-2 mb-2" [style]="(choosenOption !== 'accel' || calculating) ? 'opacity: 0.25; pointer-events: none' : ''">
        <div class="col-sm d-flex flex-row justify-content-center">
          <button type="button" class="mt-1 btn btn-purple rounded-pill align-self-center d-flex flex-row justify-content-center align-items-center" style="width: 200px" (click)="accelerate()">
            <img src="/resources/mempool-accelerator-sparkles-light.svg" height="20" class="mr-2" style="margin-left: -10px">
            <span>Accelerate</span>
          </button>
        </div>
      </div>
    </form>
  } @else if (step === 'checkout') {
    <div class="row">
      <div class="col-md">
        <div class="d-flex flex-column" *ngIf="estimate">
          <span><b>Accelerate</b> to ~{{ ((userBid + estimate.txSummary.effectiveFee) / estimate.txSummary.effectiveVsize) | number : '1.0-0' }} sat/vB <button *ngIf="advancedEnabled && isLoggedIn()" class="btn btn-sm btn-accelerate btn-small-height ml-3" i18n="accelerator.customize" (click)="moveToStep('quote')">customize</button></span>
          <span class="checkout-text">
            @if (!calculating) {
              For an additional <app-fiat [value]="cost"></app-fiat> (<span><small style="font-family: monospace;">{{ cost | number }}</small>&nbsp;<span class="symbol" i18n="shared.sats">sats</span></span>)
            } @else {
              <span class="estimating">Calculating cost...</span>
            }
          </span>
          <span class="checkout-text" *ngIf="(etaInfo$ | async) as etaInfo">
            Reducing expected confirmation time to <app-time kind="within" [time]="etaInfo.acceleratedETA" [fastRender]="false" [fixedRender]="true"></app-time>
          </span>
        </div>
      </div>
      <div class="col-md pie d-none d-md-flex" *ngIf="estimate && !forceMobile">
        <small class="form-text text-muted mb-2" i18n="accelerator.hashrate-percentage-description" *ngIf="(etaInfo$ | async) as etaInfo">Your transaction will be prioritized by up to {{ etaInfo.hashratePercentage | number : '1.1-1' }}% of miners.</small>
        <app-active-acceleration-box [miningStats]="miningStats" [pools]="estimate.pools" [chartOnly]="true"></app-active-acceleration-box>
      </div>
    </div>
    @if (canPayWithBalance || !(canPayWithBitcoin || canPayWithCashapp)) {
      <div class="d-flex justify-content-center">
        <button type="button" class="mt-1 btn btn-purple rounded-pill align-self-center d-flex flex-row justify-content-center align-items-center" [class.estimateDisabled]="!canPayWithBalance" style="width: 200px" (click)="accelerate()">
          <img src="/resources/mempool-accelerator-sparkles-light.svg" height="20" class="mr-2" style="margin-left: -10px">
          <span>Accelerate</span>
        </button>
      </div>
    } @else {
      <div class="payment-area mt-2 p-2">
        <div class="row text-center justify-content-center mx-2" style="font-size: 14px;">
          <p>Payment to mempool.space for acceleration of txid <a [routerLink]="'/tx/' + tx.txid" target="_blank"> {{ tx.txid.substr(0, 10) }}..{{ tx.txid.substr(-10) }}</a></p>
        </div>
        <div class="row">
          @if (canPayWithBitcoin) {
            <div class="col-sm text-center d-flex flex-column justify-content-center align-items-center">
              @if (invoice) {
                <p>Pay <span><small style="font-family: monospace;">{{ cost | number }}</small>&nbsp;<span class="symbol" i18n="shared.sats">sats</span></span></p>
                <app-bitcoin-invoice style="width: 100%;" [invoiceId]="invoice.btcpayInvoiceId" [minimal]="true" (completed)="closeModal(2000)"></app-bitcoin-invoice>
              } @else {
                <span>Loading invoice...</span>
                <div class="ml-2 spinner-border text-light" style="width: 25px; height: 25px"></div>
              }
            </div>
            @if (canPayWithCashapp) {
              <div class="col-sm text-center flex-grow-0  d-flex flex-column justify-content-center align-items-center">
                <p class="text-nowrap">&mdash;<span i18n="or">OR</span>&mdash;</p>
              </div>
            }
          }
          @if (cashappEnabled) {
            <div class="col-sm text-center d-flex flex-column justify-content-center align-items-center">
              <p>Pay <app-fiat [value]="cost"></app-fiat> with</p>
              <img class="paymentMethod mx-2" src="/resources/cash-app.svg" height=55 (click)="moveToStep('cashapp')">
            </div>
          }
        </div>
      </div>
    }
    @if (showSummary) {
      <div class="row mt-2 mb-2 text-center">
        <div class="col-sm d-flex flex-column">
          <button type="button" class="mt-1 btn btn-secondary btn-sm rounded-pill align-self-center" style="width: 200px" (click)="moveToStep('summary')">Go Back</button>
        </div>
      </div>
    }
  } @else if (step === 'cashapp') {
    <!-- Show checkout page -->
    <div class="row mb-md-1 text-center">
      <div class="col-sm" id="confirm-payment-title">
        <h1 style="font-size: larger;"><ng-content select="[slot='checkout-title']"></ng-content><span class="default-slot">Confirm your payment</span></h1>
      </div>
    </div>

    <div class="row text-center">
      <div class="col-sm">
        <div class="form-group w-100" style="font-size: 14px">
          Payment to mempool.space for acceleration of txid <a [routerLink]="'/tx/' + tx.txid" target="_blank">{{ tx.txid.substr(0, 10) }}..{{ tx.txid.substr(-10) }}</a>
        </div>
      </div>
    </div>

    @if (!loadingCashapp) {
      <div class="row text-center mt-1">
        <div class="col-sm">
          <div class="form-group w-100">
            <span><u><strong>Total additional cost</strong></u><br>
              <span style="font-size: 16px" class="d-block mt-2">
                Pay
                <strong><app-fiat [value]="cost"></app-fiat></strong>
                with
              </span>
            </span>
          </div>
        </div>
      </div>
    }

    <div class="row text-center mt-1">
      <div class="col-sm">
        <div class="form-group w-100">
          <div id="cash-app-pay" class="d-inline-block" [style]="loadingCashapp ? 'opacity: 0; width: 0px; height: 0px; pointer-events: none;' : ''"></div>
          @if (loadingCashapp) {
          <div display="d-flex flex-row justify-content-center">
            <span>Loading payment method...</span>
            <div class="ml-2 spinner-border text-light" style="width: 25px; height: 25px"></div>
          </div>
          }
        </div>
      </div>
    </div>

    <hr>
    <div class="row mt-2 mb-2 text-center">
      <div class="col-sm d-flex flex-column">
        <button type="button" class="mt-1 btn btn-secondary btn-sm rounded-pill align-self-center" style="width: 200px" (click)="moveToStep('checkout')">Go Back</button>
      </div>
    </div>
  }

  @else if (step === 'processing') {
    <div class="row mb-1 text-center">
      <div class="col-sm">
        <h1 style="font-size: larger;"><ng-content select="[slot='processing-title']"></ng-content><span class="default-slot">Confirming your payment</span></h1>
      </div>
    </div>

    <div class="row text-center mt-1">
      <div class="col-sm">
        <div class="form-group w-100">
          <!-- Processing payment -->
          <div id="cash-app-pay" class="d-inline-block" [style]="'opacity: 0; width: 0px; height: 0px; pointer-events: none;'"></div>
          <div display="d-flex flex-row justify-content-center">
            <span>We are processing your payment...</span>
            <div class="ml-2 spinner-border text-light" style="width: 25px; height: 25px"></div>
          </div>
        </div>
      </div>
    </div>
  }
</div>