Implementation of login and logout mechanisms.

sportshub-gui/src/app/components/login/login.service.ts

@@ -0,0 +1,37 @@
+import {Injectable} from "@angular/core";
+import {UserRestService} from "../../core/rest-services/user.rest-service";
+import {LoginRequest} from "../../core/model/login-request";
+import {Subject} from "rxjs";
+import {MessageService} from "../../core/services/message.service";
+import {AuthenticationService} from "../../core/services/authentication.service";
+import {Router} from "@angular/router";
+
+@Injectable()
+export class LoginService {
+  private isLoginPending: Subject<boolean> = new Subject<boolean>();
+
+  constructor(
+    private authenticationService: AuthenticationService,
+    private messageService: MessageService,
+    private router: Router,
+    private userRestService: UserRestService
+  ) {}
+
+  login(loginRequest: LoginRequest): void {
+    this.isLoginPending.next(true);
+
+    this.userRestService.login(loginRequest)
+      .then(loginResponse => {
+        this.messageService.display('Login success!');
+        this.authenticationService.setAuthenticated(loginResponse);
+        this.router.navigate(['/']);
+      })
+      .catch(error => {
+        if (error.status === 400) {
+          this.messageService.display('Login or password incorrect.')
+        } else {
+          this.messageService.display('An error occured while login.')
+        }
+      });
+  }
+}