Custom BTCPay donation integration

fixes #122

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

@@ -61,4 +61,16 @@ export class ApiService {
     });
     return this.httpClient.get<number[]>(this.apiBaseUrl + '/transaction-times', { params });
   }
+
+  requestDonation$(amount: number, orderId: string): Observable<any> {
+    const params = {
+      amount: amount,
+      orderId: orderId,
+    };
+    return this.httpClient.post<any>(this.apiBaseUrl + '/donations', params);
+  }
+
+  getDonation$(): Observable<any[]> {
+    return this.httpClient.get<any[]>(this.apiBaseUrl + '/donations');
+  }
 }

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

@@ -34,6 +34,7 @@ export class StateService {
   vbytesPerSecond$ = new ReplaySubject<number>(1);
   lastDifficultyAdjustment$ = new ReplaySubject<number>(1);
   gitCommit$ = new ReplaySubject<string>(1);
+  donationConfirmed$ = new Subject();
 
   live2Chart$ = new Subject<OptimizedMempoolStats>();
 

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

@@ -155,6 +155,10 @@ export class WebsocketService {
           this.stateService.gitCommit$.next(response['git-commit']);
         }
 
+        if (response.donationConfirmed) {
+          this.stateService.donationConfirmed$.next(true);
+        }
+
         if (this.goneOffline === true) {
           this.goneOffline = false;
           if (this.lastWant) {
@@ -189,6 +193,10 @@ export class WebsocketService {
     this.isTrackingTx = true;
   }
 
+  trackDonation(id: string) {
+    this.websocketSubject.next({ 'track-donation': id });
+  }
+
   stopTrackingTransaction() {
     if (!this.isTrackingTx) {
       return;