Fixes multiple bugs with outspends and channels

fixes #412

backend/src/api/explorer/channels.routes.ts

@@ -70,7 +70,7 @@ class ChannelsRoutes {
     }
   }
 
-  private async $getChannelsByTransactionIds(req: Request, res: Response) {
+  private async $getChannelsByTransactionIds(req: Request, res: Response): Promise<void> {
     try {
       if (!Array.isArray(req.query.txId)) {
         res.status(400).send('Not an array');
@@ -83,27 +83,26 @@ class ChannelsRoutes {
         }
       }
       const channels = await channelsApi.$getChannelsByTransactionId(txIds);
-      const inputs: any[] = [];
-      const outputs: any[] = [];
+      const result: any[] = [];
       for (const txid of txIds) {
-        const foundChannelInputs = channels.find((channel) => channel.closing_transaction_id === txid);
-        if (foundChannelInputs) {
-          inputs.push(foundChannelInputs);
-        } else {
-          inputs.push(null);
+        const inputs: any = {};
+        const outputs: any = {};
+        // Assuming that we only have one lightning close input in each transaction. This may not be true in the future
+        const foundChannelsFromInput = channels.find((channel) => channel.closing_transaction_id === txid);
+        if (foundChannelsFromInput) {
+          inputs[0] = foundChannelsFromInput;
         }
-        const foundChannelOutputs = channels.find((channel) => channel.transaction_id === txid);
-        if (foundChannelOutputs) {
-          outputs.push(foundChannelOutputs);
-        } else {
-          outputs.push(null);
+        const foundChannelsFromOutputs = channels.filter((channel) => channel.transaction_id === txid);
+        for (const output of foundChannelsFromOutputs) {
+          outputs[output.transaction_vout] = output;
         }
+        result.push({
+          inputs,
+          outputs,
+        });
       }
 
-      res.json({
-        inputs: inputs,
-        outputs: outputs,
-      });
+      res.json(result);
     } catch (e) {
       res.status(500).send(e instanceof Error ? e.message : e);
     }

frontend/src/app/components/transactions-list/transactions-list.component.html

@@ -20,7 +20,7 @@
       <div class="col">
         <table class="table table-borderless smaller-text table-sm table-tx-vin">
           <tbody>
-            <ng-template ngFor let-vin [ngForOf]="tx['@vinLimit'] ? ((tx.vin.length > rowLimit) ? tx.vin.slice(0, rowLimit - 2) : tx.vin.slice(0, rowLimit)) : tx.vin" [ngForTrackBy]="trackByIndexFn">
+            <ng-template ngFor let-vin let-vindex="index" [ngForOf]="tx['@vinLimit'] ? ((tx.vin.length > rowLimit) ? tx.vin.slice(0, rowLimit - 2) : tx.vin.slice(0, rowLimit)) : tx.vin" [ngForTrackBy]="trackByIndexFn">
               <tr [ngClass]="{
                 'assetBox': assetsMinimal && vin.prevout && assetsMinimal[vin.prevout.asset] && !vin.is_coinbase && vin.prevout.scriptpubkey_address && tx._unblinded,
                 'highlight': vin.prevout?.scriptpubkey_address === this.address && this.address !== ''
@@ -77,7 +77,7 @@
                           {{ vin.prevout.scriptpubkey_type?.toUpperCase() }}
                         </ng-template>
                         <div>
-                          <app-address-labels [vin]="vin" [channel]="channels && channels.inputs[i] || null"></app-address-labels>
+                          <app-address-labels [vin]="vin" [channel]="tx._channels && tx._channels.inputs[vin.vout] || null"></app-address-labels>
                         </div>
                       </ng-template>
                     </ng-container>
@@ -172,7 +172,7 @@
                     </span>
                   </a>
                   <div>
-                    <app-address-labels [vout]="vout" [channel]="channels && channels.outputs[i] && channels.outputs[i].transaction_vout === vindex ? channels.outputs[i] : null"></app-address-labels>
+                    <app-address-labels [vout]="vout" [channel]="tx._channels && tx._channels.outputs[vindex] ? tx._channels.outputs[vindex] : null"></app-address-labels>
                   </div>
                   <ng-template #scriptpubkey_type>
                     <ng-template [ngIf]="vout.pegout" [ngIfElse]="defaultscriptpubkey_type">
@@ -212,15 +212,15 @@
                   </ng-template>
                 </td>
                 <td class="arrow-td">
-                  <span *ngIf="!outspends[i] || vout.scriptpubkey_type === 'op_return' || vout.scriptpubkey_type === 'fee' ; else outspend" class="grey">
+                  <span *ngIf="!tx._outspends || vout.scriptpubkey_type === 'op_return' || vout.scriptpubkey_type === 'fee' ; else outspend" class="grey">
                     <fa-icon [icon]="['fas', 'arrow-alt-circle-right']" [fixedWidth]="true"></fa-icon>
                   </span>
                   <ng-template #outspend>
-                    <span *ngIf="!outspends[i][vindex] || !outspends[i][vindex].spent; else spent" class="green">
+                    <span *ngIf="!tx._outspends[vindex] || !tx._outspends[vindex].spent; else spent" class="green">
                       <fa-icon [icon]="['fas', 'arrow-alt-circle-right']" [fixedWidth]="true"></fa-icon>
                     </span>
                     <ng-template #spent>
-                      <a *ngIf="outspends[i][vindex].txid else outputNoTxId" [routerLink]="['/tx/' | relativeUrl, outspends[i][vindex].txid]" class="red">
+                      <a *ngIf="tx._outspends[vindex].txid else outputNoTxId" [routerLink]="['/tx/' | relativeUrl, tx._outspends[vindex].txid]" class="red">
                         <fa-icon [icon]="['fas', 'arrow-alt-circle-right']" [fixedWidth]="true"></fa-icon>
                       </a>
                       <ng-template #outputNoTxId>

frontend/src/app/components/transactions-list/transactions-list.component.ts

@@ -27,7 +27,6 @@ export class TransactionsListComponent implements OnInit, OnChanges {
   @Input() outputIndex: number;
   @Input() address: string = '';
   @Input() rowLimit = 12;
-  @Input() channels: { inputs: any[], outputs: any[] };
 
   @Output() loadMore = new EventEmitter();
 
@@ -36,8 +35,8 @@ export class TransactionsListComponent implements OnInit, OnChanges {
   refreshOutspends$: ReplaySubject<string[]> = new ReplaySubject();
   refreshChannels$: ReplaySubject<string[]> = new ReplaySubject();
   showDetails$ = new BehaviorSubject<boolean>(false);
-  outspends: Outspend[][] = [];
   assetsMinimal: any;
+  transactionsLength: number = 0;
 
   constructor(
     public stateService: StateService,
@@ -47,7 +46,7 @@ export class TransactionsListComponent implements OnInit, OnChanges {
     private ref: ChangeDetectorRef,
   ) { }
 
-  ngOnInit() {
+  ngOnInit(): void {
     this.latestBlock$ = this.stateService.blocks$.pipe(map(([block]) => block));
     this.stateService.networkChanged$.subscribe((network) => this.network = network);
 
@@ -62,14 +61,17 @@ export class TransactionsListComponent implements OnInit, OnChanges {
         .pipe(
           switchMap((txIds) => this.apiService.getOutspendsBatched$(txIds)),
           tap((outspends: Outspend[][]) => {
-            this.outspends = this.outspends.concat(outspends);
+            const transactions = this.transactions.filter((tx) => !tx._outspends);
+            outspends.forEach((outspend, i) => {
+              transactions[i]._outspends = outspend;
+            });
           }),
         ),
       this.stateService.utxoSpent$
         .pipe(
           tap((utxoSpent) => {
             for (const i in utxoSpent) {
-              this.outspends[0][i] = {
+              this.transactions[0]._outspends[i] = {
                 spent: true,
                 txid: utxoSpent[i].txid,
                 vin: utxoSpent[i].vin,
@@ -81,21 +83,23 @@ export class TransactionsListComponent implements OnInit, OnChanges {
           .pipe(
             filter(() => this.stateService.env.LIGHTNING),
             switchMap((txIds) => this.apiService.getChannelByTxIds$(txIds)),
-            map((channels) => {
-              this.channels = channels;
+            tap((channels) => {
+              const transactions = this.transactions.filter((tx) => !tx._channels);
+              channels.forEach((channel, i) => {
+                transactions[i]._channels = channel;
+              });
             }),
           )
         ,
     ).subscribe(() => this.ref.markForCheck());
   }
 
-  ngOnChanges() {
+  ngOnChanges(): void {
     if (!this.transactions || !this.transactions.length) {
       return;
     }
-    if (this.paginated) {
-      this.outspends = [];
-    }
+
+    this.transactionsLength = this.transactions.length;
     if (this.outputIndex) {
       setTimeout(() => {
         const assetBoxElements = document.getElementsByClassName('assetBox');
@@ -126,14 +130,19 @@ export class TransactionsListComponent implements OnInit, OnChanges {
         tx['addressValue'] = addressIn - addressOut;
       }
     });
-    const txIds = this.transactions.map((tx) => tx.txid);
-    this.refreshOutspends$.next(txIds);
-    if (!this.channels) {
-      this.refreshChannels$.next(txIds);
+    const txIds = this.transactions.filter((tx) => !tx._outspends).map((tx) => tx.txid);
+    if (txIds.length) {
+      this.refreshOutspends$.next(txIds);
+    }
+    if (this.stateService.env.LIGHTNING) {
+      const txIds = this.transactions.filter((tx) => !tx._channels).map((tx) => tx.txid);
+      if (txIds.length) {
+        this.refreshChannels$.next(txIds);
+      }
     }
   }
 
-  onScroll() {
+  onScroll(): void {
     const scrollHeight = document.body.scrollHeight;
     const scrollTop = document.documentElement.scrollTop;
     if (scrollHeight > 0){
@@ -148,11 +157,11 @@ export class TransactionsListComponent implements OnInit, OnChanges {
     return tx.vout.some((v: any) => v.value === undefined);
   }
 
-  getTotalTxOutput(tx: Transaction) {
+  getTotalTxOutput(tx: Transaction): number {
     return tx.vout.map((v: Vout) => v.value || 0).reduce((a: number, b: number) => a + b);
   }
 
-  switchCurrency() {
+  switchCurrency(): void {
     if (this.network === 'liquid' || this.network === 'liquidtestnet') {
       return;
     }
@@ -164,7 +173,7 @@ export class TransactionsListComponent implements OnInit, OnChanges {
     return tx.txid + tx.status.confirmed;
   }
 
-  trackByIndexFn(index: number) {
+  trackByIndexFn(index: number): number {
     return index;
   }
 
@@ -177,7 +186,7 @@ export class TransactionsListComponent implements OnInit, OnChanges {
     return Math.pow(base, exponent);
   }
 
-  toggleDetails() {
+  toggleDetails(): void {
     if (this.showDetails$.value === true) {
       this.showDetails$.next(false);
     } else {
@@ -185,7 +194,7 @@ export class TransactionsListComponent implements OnInit, OnChanges {
     }
   }
 
-  loadMoreInputs(tx: Transaction) {
+  loadMoreInputs(tx: Transaction): void {
     tx['@vinLimit'] = false;
 
     this.electrsApiService.getTransaction$(tx.txid)
@@ -196,7 +205,7 @@ export class TransactionsListComponent implements OnInit, OnChanges {
       });
   }
 
-  ngOnDestroy() {
+  ngOnDestroy(): void {
     this.outspendsSubscription.unsubscribe();
   }
 }

frontend/src/app/interfaces/electrs.interface.ts

@@ -1,3 +1,5 @@
+import { IChannel } from './node-api.interface';
+
 export interface Transaction {
   txid: string;
   version: number;
@@ -19,6 +21,13 @@ export interface Transaction {
   deleteAfter?: number;
   _unblinded?: any;
   _deduced?: boolean;
+  _outspends?: Outspend[];
+  _channels?: TransactionChannels;
+}
+
+export interface TransactionChannels {
+  inputs: { [vin: number]: IChannel };
+  outputs: { [vout: number]: IChannel };
 }
 
 interface Ancestor {

frontend/src/app/interfaces/node-api.interface.ts

@@ -189,3 +189,35 @@ export interface IOldestNodes {
   city?: any,
   country?: any,
 }
+
+export interface IChannel {
+  id: number;
+  short_id: string;
+  capacity: number;
+  transaction_id: string;
+  transaction_vout: number;
+  closing_transaction_id: string;
+  closing_reason: string;
+  updated_at: string;
+  created: string;
+  status: number;
+  node_left: Node,
+  node_right: Node,
+}
+
+
+export interface INode {
+  alias: string;
+  public_key: string;
+  channels: number;
+  capacity: number;
+  base_fee_mtokens: number;
+  cltv_delta: number;
+  fee_rate: number;
+  is_disabled: boolean;
+  max_htlc_mtokens: number;
+  min_htlc_mtokens: number;
+  updated_at: string;
+  longitude: number;
+  latitude: number;
+}

frontend/src/app/lightning/channel/channel.component.html

@@ -65,13 +65,13 @@
     <ng-container *ngIf="transactions$ | async as transactions">
       <ng-template [ngIf]="transactions[0]">
         <h3>Opening transaction</h3>
-        <app-transactions-list [transactions]="[transactions[0]]" [showConfirmations]="true" [rowLimit]="5" [channels]="{ inputs: [], outputs: [channel] }"></app-transactions-list>
+        <app-transactions-list [transactions]="[transactions[0]]" [showConfirmations]="true" [rowLimit]="5"></app-transactions-list>
       </ng-template>
       <ng-template [ngIf]="transactions[1]">
         <div class="closing-header">
           <h3 style="margin: 0;">Closing transaction</h3>&nbsp;&nbsp;<app-closing-type [type]="channel.closing_reason"></app-closing-type>
         </div>
-        <app-transactions-list [transactions]="[transactions[1]]" [showConfirmations]="true" [rowLimit]="5" [channels]="{ inputs: [channel], outputs: [] }"></app-transactions-list>
+        <app-transactions-list [transactions]="[transactions[1]]" [showConfirmations]="true" [rowLimit]="5"></app-transactions-list>
       </ng-template>
     </ng-container>
 

frontend/src/app/lightning/channel/channel.component.ts

@@ -2,6 +2,7 @@ import { ChangeDetectionStrategy, Component, OnInit } from '@angular/core';
 import { ActivatedRoute, ParamMap } from '@angular/router';
 import { forkJoin, Observable, of, share, zip } from 'rxjs';
 import { catchError, map, shareReplay, switchMap, tap } from 'rxjs/operators';
+import { IChannel } from 'src/app/interfaces/node-api.interface';
 import { ApiService } from 'src/app/services/api.service';
 import { ElectrsApiService } from 'src/app/services/electrs-api.service';
 import { SeoService } from 'src/app/services/seo.service';
@@ -62,10 +63,15 @@ export class ChannelComponent implements OnInit {
     );
 
     this.transactions$ = this.channel$.pipe(
-      switchMap((data) => {
+      switchMap((channel: IChannel) => {
         return zip([
-          data.transaction_id ? this.electrsApiService.getTransaction$(data.transaction_id) : of(null),
-          data.closing_transaction_id ? this.electrsApiService.getTransaction$(data.closing_transaction_id) : of(null),
+          channel.transaction_id ? this.electrsApiService.getTransaction$(channel.transaction_id) : of(null),
+          channel.closing_transaction_id ? this.electrsApiService.getTransaction$(channel.closing_transaction_id).pipe(
+            map((tx) => {
+              tx._channels = { inputs: {0: channel}, outputs: {}};
+              return tx;
+            })
+          ) : of(null),
         ]);
       }),
     );

frontend/src/app/services/api.service.ts

@@ -242,12 +242,12 @@ export class ApiService {
     return this.httpClient.get<any>(this.apiBaseUrl + this.apiBasePath + `/api/v1/enterprise/info/` + name);
   }
 
-  getChannelByTxIds$(txIds: string[]): Observable<{ inputs: any[], outputs: any[] }> {
+  getChannelByTxIds$(txIds: string[]): Observable<any[]> {
     let params = new HttpParams();
     txIds.forEach((txId: string) => {
       params = params.append('txId[]', txId);
     });
-    return this.httpClient.get<{ inputs: any[], outputs: any[] }>(this.apiBaseUrl + this.apiBasePath + '/api/v1/lightning/channels/txids/', { params });
+    return this.httpClient.get<any[]>(this.apiBaseUrl + this.apiBasePath + '/api/v1/lightning/channels/txids/', { params });
   }
 
   lightningSearch$(searchText: string): Observable<any[]> {