web-ui: Add TickerService

web-ui/src/app/app.module.ts

@@ -18,6 +18,7 @@ import { ErrorService } from './services/error.service';
 import { LanguageService } from './services/language.service';
 import { NavigatorService } from './services/navigator.service';
 import { NotificationService } from './services/notification.service';
+import { TickerService } from './services/ticker.service';
 import { TransactionsService } from './services/transactions.service';
 
 import { AppComponent } from './app.component';
@@ -66,6 +67,7 @@ import { LatestBlocksComponent } from './components/latest-blocks/latest-blocks.
     LanguageService,
     NavigatorService,
     NotificationService,
+    TickerService,
     TransactionsService
   ],
   bootstrap: [AppComponent]

web-ui/src/app/models/ticker.ts

@@ -0,0 +1,6 @@
+
+export class ServerStats {
+  totalSupply: number;
+  transactions: number;
+  height: number;
+}

web-ui/src/app/services/ticker.service.ts

@@ -0,0 +1,24 @@
+import { Injectable } from '@angular/core';
+import { HttpClient, HttpHeaders } from '@angular/common/http';
+import { Observable } from 'rxjs/Observable';
+
+import { environment } from '../../environments/environment';
+
+import { ServerStats } from '../models/ticker';
+
+const httpOptions = {
+  headers: new HttpHeaders({ 'Content-Type': 'application/json' })
+};
+
+@Injectable()
+export class TickerService {
+
+  private baseUrl = environment.api.url + '/stats';
+
+  constructor(private http: HttpClient) { }
+
+  get(): Observable<ServerStats> {
+    const url = this.baseUrl;
+    return this.http.get<ServerStats>(url);
+  }
+}