Fixing resetting of token, changing endpoint, simplifying isLoggedIn …

…function

src/app/authentication/authentication.component.ts

@@ -54,7 +54,7 @@ export class AuthenticationComponent implements OnInit {
     localStorage.removeItem('gen_name');
     localStorage.removeItem('data_type');
     localStorage.removeItem('fault_type');
-    localStorage.removeItem('auth_token');
+    // localStorage.removeItem('auth_token');
   }
 
 }

src/app/header/header.component.ts

@@ -23,16 +23,8 @@ export class HeaderComponent implements OnInit {
   resetGenAndVisualize() {
     this.resetAndRedirect('/visualize-all');
   }
-  isLoggedIn()
-  {
-    if(localStorage.getItem('auth_token'))
-    {
-      return true;
-    }
-    else
-    {
-      return false;
-    }
+  isLoggedIn(): boolean {
+    return (localStorage.getItem('auth_token') !== null);
   }
 
   resetAndRedirect(url: string) {

src/app/services/login.service.ts

@@ -3,13 +3,14 @@ import { HttpClient } from '@angular/common/http';
 import { Observable } from 'rxjs/Observable';
 import 'rxjs/add/observable/throw';
 import 'rxjs/add/operator/catch';
+import {Router} from '@angular/router';
 
 @Injectable({
   providedIn: 'root'
 })
 export class LoginService {
 
-  constructor(private http: HttpClient) { }
+  constructor(private http: HttpClient, private router: Router) { }
 
   authorizeUser(loginInfo): Observable<Object> {
     return this.http.post('http://sd5-backend.engr.uconn.edu/auth', loginInfo);
@@ -33,19 +34,28 @@ export class LoginService {
   getToken(): Promise<string> {
     return new Promise<string>((resolve, reject) => {
       const token = localStorage.getItem('auth_token');
-      if (!token) { reject('No Token'); }
-      this.http.get('http://sd5-backend.engr.uconn.edu/auth/verify', {
+      if (!token) { this.resetToken(); reject('No Token'); }
+      this.http.get('http://sd5-backend.engr.uconn.edu/verify', {
         headers: {
           Authorization: 'Bearer ' + token
         },
         observe: 'response'
       }).subscribe((response) => {
-        if (response.status === 200) {
+        if (response.ok) {
           resolve(token);
         } else {
-          reject('Invalid Token');
+          this.resetToken();
+          reject('Bad Token!');
         }
+      }, () => {
+        this.resetToken();
+        reject('Bad Token!');
       });
     });
   }
+
+  resetToken() {
+    localStorage.removeItem('auth_token');
+    this.router.navigateByUrl('#');
+  }
 }