What will we build?

In this quickstart, we will add the Frontegg hosted login box to your Angular application.

In 5 minutes from now, your application will have a login box with Sign in, Sign up, and SSO. All this with just a few lines of code using redirects, Open Id Connect, and OAuth2.

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⚡️ The code in the sample below is available in our Frontegg Samples repository in GitHub ⚡️

Ready to start?


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⚡ Before you start: ⚡

📘

Getting your Frontegg subdomain

Frontegg creates a unique subdomain for every workspace created on the account. In order to retrieve the subdomain that will act as the baseUrl in the integration, navigate to your workspace administration menu, and copy the workspace domain.

You will need them for this guide.


STEP 1: Create Angular app

📘

If you have an existing app, skip this step.


Install Angular command line interface.

npm install -g @angular/cli

To create a new app, use the following script.

ng new my-app
cd my-app
ng serve --open

STEP 2: Install

Run the following command to install the Frontegg Angular library.

npm install @frontegg/angular
yarn add @frontegg/angular

STEP 3: Configure

  1. Add FronteggAppModule to AppModule.imports[]
  2. Add FronteggComponent to AppModule.entryComponents[]
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { CommonModule } from '@angular/common';
import { FronteggAppModule, FronteggComponent } from '@frontegg/angular';

@NgModule({
  declarations: [AppComponent],
  imports: [
    CommonModule,
    BrowserModule,
    AppRoutingModule,

    /** 1. Import Frontegg Module **/
    FronteggAppModule.forRoot(
      {
        contextOptions: {
          baseUrl: 'https://[YOUR-SUB-DOMAIN].frontegg.com',
          clientId: '[YOUR-CLIENT-ID]'
        },
        authOptions: {
          // keepSessionAlive: true // Uncomment this in order to maintain the session alive
        },
        hostedLoginBox: true,
      },
    ),
  ],

  /** 2. Add Frontetgg Component to your entryComponents **/
  entryComponents: [FronteggComponent],

  bootstrap: [AppComponent],
})
export class AppModule { }

In app.component.ts, add the loading state and loginWithRedirect hook in order to navigate to the hosted login.

import {Component, OnDestroy, OnInit} from '@angular/core';
import {Subscription} from "rxjs";
import {FronteggAppService, FronteggAuthService} from "@frontegg/angular";
import { ContextHolder } from '@frontegg/rest-api';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
})
export class AppComponent implements OnInit, OnDestroy {
  isLoading = true;
  loadingSubscription: Subscription;
  user?: any;

  constructor(private fronteggAuthService: FronteggAuthService, private fronteggAppService: FronteggAppService) {
    this.loadingSubscription = fronteggAppService.isLoading$.subscribe((isLoading) => this.isLoading = isLoading)
  }

  ngOnInit(): void {
    this.fronteggAuthService?.user$.subscribe((user) => {
      this.user = user
    })
  }

  loginWithRedirect(): void {
    this.fronteggAuthService.loginWithRedirect();
  }
  
  logOut(): void {
    const baseUrl = ContextHolder.getContext().baseUrl;
    window.location.href = `${baseUrl}/oauth/logout?post_logout_redirect_uri=${window.location}`;
  }

  ngOnDestroy(): void {
    this.loadingSubscription.unsubscribe()
  }
}

For an automatic redirect to your app or login page use the code below:

// Available from v4.20.1 for automatic redirect to your app / login box. 

export class AppComponent implements OnInit
{
  isLoading = true;
  user?: any;

  constructor(private fronteggAuthService: FronteggAuthService, private fronteggAppService: FronteggAppService) {
  }

  ngOnInit(): void {
    this.fronteggAuthService.authState$.subscribe(authState => {
      this.isLoading = authState.isLoading
      this.user = authState.user
      if (!authState.isLoading && !authState.isAuthenticated) {
        this.fronteggAuthService.loginWithRedirect();
      }
    });
  }

  logOut(): void {
    const baseUrl = ContextHolder.getContext().baseUrl;
    window.location.href = `${baseUrl}/oauth/logout?post_logout_redirect_uri=${window.location}`;
  }
}

On the [hosted login configuration](https://portal.frontegg.com), add `http://localhost:4200/oauth/callback` as the allowed `redirectUrl`
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🚧

Configure Each Environment

Configure the hosted login for each environment separately.


STEP 4: Redirect to login

In app.component.html, for non-authenticated users, clicking the loginWithRedirect() will navigate the user to the hosted login. Once the user is authenticated, the user info will be available on the user object available from the component.

<div *ngIf="!isLoading">
  <div *ngIf="user">
    <img src={{user?.profilePictureUrl}} alt={{user?.name}} />
    <div>User name: {{user?.name}}</div>
    <button (click)="logOut()">Log out</button>
  </div>
  <div *ngIf="!user">
    <button (click)="loginWithRedirect()">Login with redirect</button>
  </div>
</div>

Great, Frontegg is now integrated with your app!

Try it now!

Run your app and click on the Login with redirect button in order to navigate to the login dialog


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