Add authentication and role access guards.

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

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+import { TestBed } from '@angular/core/testing';
+
+import { AuthGuard } from './auth.guard';
+
+describe('AuthGuard', () => {
+  let guard: AuthGuard;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    guard = TestBed.inject(AuthGuard);
+  });
+
+  it('should be created', () => {
+    expect(guard).toBeTruthy();
+  });
+});

src/app/_guards/auth.guard.ts

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+import { Injectable } from '@angular/core';
+import {CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, UrlTree, Router} from '@angular/router';
+import { Observable } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class AuthGuard implements CanActivate {
+
+  constructor(private router: Router) {}
+
+  canActivate(
+    route: ActivatedRouteSnapshot,
+    state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
+    if (localStorage.getItem(atob('CICADA_USER'))) {
+      return true;
+    }
+
+    this.router.navigate(['/auth'], { queryParams: { returnUrl: state.url }});
+    return false;
+  }
+
+}

src/app/_guards/index.ts

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+export * from './auth.guard';
+export * from './role.guard';

src/app/_guards/role.guard.spec.ts

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+import { TestBed } from '@angular/core/testing';
+
+import { RoleGuard } from './role.guard';
+
+describe('RoleGuard', () => {
+  let guard: RoleGuard;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    guard = TestBed.inject(RoleGuard);
+  });
+
+  it('should be created', () => {
+    expect(guard).toBeTruthy();
+  });
+});

src/app/_guards/role.guard.ts

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+import { Injectable } from '@angular/core';
+import {CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, UrlTree, Router} from '@angular/router';
+import { Observable } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class RoleGuard implements CanActivate {
+
+  constructor(private router: Router) {}
+
+  canActivate(
+    route: ActivatedRouteSnapshot,
+    state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
+    const currentUser = JSON.parse(localStorage.getItem(atob('CICADA_USER')));
+    if (currentUser) {
+      if (route.data.roles && route.data.roles.indexOf(currentUser.role) === -1) {
+        this.router.navigate(['/']);
+        return false;
+      }
+      return true;
+    }
+
+    this.router.navigate(['/auth'], { queryParams: { returnUrl: state.url }});
+    return false;
+  }
+
+}