added basic AccountService

src/app/account/account.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { AccountService } from './account.service';
+
+describe('AccountService', () => {
+  let service: AccountService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(AccountService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

src/app/account/account.service.ts

@@ -0,0 +1,17 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class AccountService {
+
+  userName: string = null;
+
+  constructor(private httpClient: HttpClient) { }
+
+  login(username, password) {
+    return this.httpClient.post<User>
+  }
+
+}

src/app/account/auth.guard.spec.ts

@@ -0,0 +1,7 @@
+import { Auth.Guard } from './auth.guard';
+
+describe('Auth.Guard', () => {
+  it('should create an instance', () => {
+    expect(new Auth.Guard()).toBeTruthy();
+  });
+});

src/app/account/auth.guard.ts

@@ -0,0 +1,21 @@
+import { Injectable } from '@angular/core';
+import { Router, CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
+import { AccountService } from './account.service';
+
+@Injectable({providedIn: 'root'})
+export class AuthGuard implements CanActivate {
+  constructor(private router: Router,
+              private accountService: AccountService) { }
+
+  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
+    const user = this.accountService.userName;
+
+    if (user) {
+      return true;
+    }
+
+    this.router.navigate(['/login'], {queryParams: {returnURL: state.url}});
+    return false;
+  }
+}
+