Angular Home/Dashboard with Anonymous and Auth Guard

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <script type="text/javascript" charset="utf-8">
      window.AngularVersionForThisPlunker = 'latest'
    </script>
    <title>angular playground</title>
    <link rel="stylesheet" href="style.css" />
    <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
    <script src="https://unpkg.com/zone.js/dist/zone.js"></script>
    <script src="https://unpkg.com/zone.js/dist/long-stack-trace-zone.js"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
    <script src="https://unpkg.com/systemjs@0.19.31/dist/system.js"></script>
    <script src="config.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

  <body>
    <my-app>
      loading...
    </my-app>
  </body>

</html>

/* Styles go here */

ul li {
  display: inline;
}

### Angular Starter Plunker - Typescript

var angularVersion;
if(window.AngularVersionForThisPlunker === 'latest'){
  angularVersion = ''; //picks up latest
}
else {
  angularVersion = '@' + window.AngularVersionForThisPlunker;
}

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  paths: {
    'npm:': 'https://unpkg.com/'
  },
  //map tells the System loader where to look for things
  map: {
    
    'app': './src',
    '@angular/core': 'npm:@angular/core'+ angularVersion + '/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common' + angularVersion + '/bundles/common.umd.js',
    '@angular/compiler': 'npm:@angular/compiler' + angularVersion  + '/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic' + angularVersion + '/bundles/platform-browser-dynamic.umd.js',
    '@angular/http': 'npm:@angular/http' + angularVersion + '/bundles/http.umd.js',
    '@angular/router': 'npm:@angular/router' + angularVersion +'/bundles/router.umd.js',
    '@angular/forms': 'npm:@angular/forms' + angularVersion + '/bundles/forms.umd.js',
    '@angular/animations': 'npm:@angular/animations' + angularVersion + '/bundles/animations.umd.js',
    '@angular/platform-browser/animations': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser-animations.umd.js',
    '@angular/animations/browser': 'npm:@angular/animations' + angularVersion + '/bundles/animations-browser.umd.js',
    
    '@angular/core/testing': 'npm:@angular/core' + angularVersion + '/bundles/core-testing.umd.js',
    '@angular/common/testing': 'npm:@angular/common' + angularVersion + '/bundles/common-testing.umd.js',
    '@angular/compiler/testing': 'npm:@angular/compiler' + angularVersion + '/bundles/compiler-testing.umd.js',
    '@angular/platform-browser/testing': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser-testing.umd.js',
    '@angular/platform-browser-dynamic/testing': 'npm:@angular/platform-browser-dynamic' + angularVersion + '/bundles/platform-browser-dynamic-testing.umd.js',
    '@angular/http/testing': 'npm:@angular/http' + angularVersion + '/bundles/http-testing.umd.js',
    '@angular/router/testing': 'npm:@angular/router' + angularVersion + '/bundles/router-testing.umd.js',
    'tslib': 'npm:tslib@1.6.1',
    'rxjs': 'npm:rxjs',
    'typescript': 'npm:typescript@2.2.1/lib/typescript.js'
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    },
    rxjs: {
      defaultExtension: 'js'
    }
  }
});

//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';

platformBrowserDynamic().bootstrapModule(AppModule)

//our root app component
import { Component, NgModule, VERSION } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'

import { AppRoutingModule } from './app-routing';

import { NavbarComponent } from './navbar.ts';
import { HomeComponent } from './home';
import { DashboardComponent } from './dashboard';

@Component({
  selector: 'my-app',
  template: `
    <navbar></navbar>
    <router-outlet></router-outlet>
  `,
})
export class App {
  
}

@NgModule({
  imports: [ BrowserModule, AppRoutingModule ],
  declarations: [ App, NavbarComponent, HomeComponent, DashboardComponent ],
  bootstrap: [ App ]
})
export class AppModule {}

import { Component, OnInit } from '@angular/core';
import { Location } from '@angular/common';

@Component({
  selector: 'dashboard',
  template: `
    <h2>Dashboard for loggedIn users</h2>
  `
})
export class DashboardComponent implements OnInit {

  constructor(
    private readonly location: Location
  ) { }

  ngOnInit(): void {
    this.location.replaceState("/");
  }

}

import { Component } from '@angular/core';

@Component({
  selector: 'home',
  template: `
    <h2>This is the Home page for Anonymous Users</h2>
  `
})
export class HomeComponent {

  constructor() {

  }

}

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';

import { AnonymousGuard } from './anonymous-guard';
import { AuthGuard } from './auth-guard';

import { HomeComponent } from './home';
import { DashboardComponent } from './dashboard';

const appRoutes: Routes = [
  { path: '', pathMatch: 'full', component: HomeComponent, canActivate: [AnonymousGuard] },
  { path: 'dashboard', component: DashboardComponent, canActivate: [AuthGuard] }
  // some other links with AnonymousGuard or AuthGuard
  // { path: '**', component: PageNotFoundComponent }
];

@NgModule({
  imports: [RouterModule.forRoot(appRoutes)],
  exports: [RouterModule],
  providers: [
    AnonymousGuard,
    AuthGuard
  ]
})
export class AppRoutingModule {}

import { Injectable } from '@angular/core';
import { CanActivate, Router, ActivatedRouteSnapshot, CanActivateChild } from '@angular/router';

@Injectable()
export class AnonymousGuard implements CanActivate, CanActivateChild {

  isLoggedIn: boolean = true;  // retrieved from a authService
  // change this to 'false' to simulate anonymous user (and also to auth-guard)

  constructor(private router: Router) { }

  canActivate(route: ActivatedRouteSnapshot): boolean {
    // If Anonymous, can access the page
    if (!this.isLoggedIn) { return true; }
    // Else force redirect to Dashboard
    this.router.navigate(['/dashboard']);
    return false;
  }

  canActivateChild(route: ActivatedRouteSnapshot): boolean {
    return this.canActivate(route);
  }

}

import { Injectable } from '@angular/core';
import { CanActivate, Router, ActivatedRouteSnapshot, RouterStateSnapshot, CanActivateChild } from '@angular/router';

@Injectable()
export class AuthGuard implements CanActivate, CanActivateChild {

  isLoggedIn: boolean = true;  // retrieved from a authService
  // change this to 'false' to simulate anonymous user (and also in anonymous-guard)

  constructor(private router: Router) { }

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
    let url: string = state.url;
    return this.checkLogin(url);
  }

  canActivateChild(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
    return this.canActivate(route, state);
  }

  checkLogin(url: string): boolean {
    if (this.isLoggedIn) { return true; }

    // this.router.navigate(['/login']);
    return false;
  }

}

import { Component } from '@angular/core';
import { Router } from '@angular/router';

@Component({
  selector: 'navbar',
  template: `
    <ul>
      <li><a routerLink="/">Logo/Home</a></li>
      <li><a routerLink="/dashboard">Dashboard</a></li>
      <!-- Some other links -->
    </ul>
  `
})
export class NavbarComponent {
  
  constructor(private router: Router) { }
  
}