toast changes

src-ui/src/app/services/auth.interceptor.ts

@@ -3,15 +3,18 @@ import {
   HttpRequest,
   HttpHandler,
   HttpEvent,
-  HttpInterceptor
+  HttpInterceptor,
+  HttpErrorResponse
 } from '@angular/common/http';
-import { Observable } from 'rxjs';
+import { Observable, throwError } from 'rxjs';
 import { AuthService } from './auth.service';
+import { catchError } from 'rxjs/operators';
+import { Toast, ToastService } from './toast.service';
 
 @Injectable()
 export class AuthInterceptor implements HttpInterceptor {
 
-  constructor(private authService: AuthService) {}
+  constructor(private authService: AuthService, private toastService: ToastService) {}
 
   intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
     if (this.authService.isAuthenticated()) {
@@ -21,6 +24,14 @@ export class AuthInterceptor implements HttpInterceptor {
         }
       });
     }
-    return next.handle(request);
+    return next.handle(request).pipe(
+      catchError((error: HttpErrorResponse) => {
+        if (error.status == 401 && this.authService.isAuthenticated()) {
+          this.authService.logout()
+          this.toastService.showToast(Toast.makeError("Your session has expired. Please log in again."))
+        }
+        return throwError(error)
+      })
+    );
   }
 }