expiry display, not yet working

ui/hv2-ui/src/app/token.service.ts

@@ -3,6 +3,8 @@ import { MessageService } from './message.service';
 import { HttpClient, HttpHeaders } from '@angular/common/http';
 import { UserCreds } from './userCreds'
 import jwt_decode  from 'jwt-decode'
+import { Observable } from 'rxjs';
+import { ComplexOuterSubscriber } from 'rxjs/internal/innerSubscribe';
 
 
 
@@ -45,7 +47,7 @@ export class TokenService {
   }
 
   async login(login: string, password: string) {
-    this.messageService.add(`TokenService: trying to login and obtain token`);
+    this.messageService.add(`TokenService: trying to login and obtain token`)
     const userCreds : UserCreds = {
       "application": "hv2",
       "login": login,
@@ -62,7 +64,7 @@ export class TokenService {
 
   async refresh() {
     try {
-      this.messageService.add(`TokenService: trying to refresh tokens`);
+      this.messageService.add(`TokenService: trying to refresh tokens`)
       const refreshToken = localStorage.getItem(TokenService.Id_RefreshToken_Key)
       const tokenTuple: TokenTuple = await this.http.post<TokenTuple>(
         "https://authservice.hottis.de/refresh", 
@@ -79,5 +81,23 @@ export class TokenService {
     }
   }
 
+  expiryUpdate() : Observable<number> {
+    const exUp = new Observable<number>((observer) => {
+      let i = 600
+
+      while (i != 0) {
+        observer.next(i)
+        i -= 1
+        await new Promise(f => setTimeout(f, 1000))
+      }
+      observer.complete()
+
+      return {
+        unsubscribe() {
+        }
+      }
+    })
+    return exUp
+  }
 
 }