Demo

App: https://7jpsan.github.io/spotify-auth-demo/ Repo: https://github.com/7jpsan/spotify-auth-demo/

Spotify Auth - Angular 5

This is a simple library that handles the authentication workflow for an angular 5 application interacting with angular api in a JS only environment, no backend service is required!

Features (v2+):

• An auth library for spotify api v1 and angular 5
• A demo application that exemplifies the use.

Coming next:

• Handle token expiration / invalidity
• Handle session persistence

Difference of this fork

This is a fork/implementation of https://github.com/cyrilletuzi/angular-quickstart-lib which was forked from https://github.com/filipesilva/angular-quickstart-lib go ahead and read their work, it is awesome!

Gotchas

After a lot of time, using the @angular/router and/or RouterModule in a library is quite complicated... I have decided to remove it and expose the mechanisms to the consumer app.

Requirements

Make sure you have at least Node 6.9 and NPM 3.0 installed.

Install

npm install spotify-auth

Usage

• Inherit the http Interceptor spotify-auth.interceptor.ts

   import { Injectable } from  '@angular/core';
   import  'rxjs/add/operator/do'; //Required, yes!
   import { TokenService, SpotifyAuthInterceptor } from  'spotify-auth';
  
   @Injectable()
   export  class  SpotifyAuthInterceptor2  extends  SpotifyAuthInterceptor {
   	
   	doOnError(err:  any):  void {}
   	
   	constructor(tokenSvc:  TokenService) {
   		super(tokenSvc);
   	}
   }

• Listen for the authService.authorizedStream and route accordingly. When the login is complete, the stream will emit a true value, which means everything is ok (it hit the authorized url with the right stuff, you should now go to a route you have defined in your router module.

  app.component.ts

   import { Component, OnInit } from  '@angular/core';
   import { AuthService, ScopesBuilder, AuthConfig, TokenService } from  'spotify-auth';
   ...
   constructor(
   	private  infoSvc:  InfoService,
   	private  tokenSvc:  TokenService,
   	private  authService:  AuthService,
   	private  router:  Router
   ) {}
  
   ngOnInit():  void {
   	this.authService.authorizedStream.pipe(filter(x  =>  x)).subscribe(() => {
   		this.router.navigate(['user']);	
   	});
   }
   ...

• Create an authorize/login method that uses the module: login.component.ts

   	import { Component, OnInit } from  '@angular/core';
   	import { AuthService, ScopesBuilder, AuthConfig } from 'spotify-auth';
   	...
   	@Component({...});
   	export class SomeClass(){
   		constructor(
   			private  authService:  AuthService,
   			private  tokenSvc:  TokenService,
   			private  router:  Router) { }
   		...
   		public  login():  void {
   			const scopes = new ScopesBuilder()/* .withScopes(ScopesBuilder.LIBRARY) */.build();
   				const ac:  AuthConfig  = {
   					// WebPortal App Id. Your application id from spotify
   					client_id:  "3af5f43840144db2a5ef883b56c5fb7e", 
   					response_type:  "token",
   					// Whitelisted URL, must end with the authozed path for the magic to happen.
   					//i.e:(http://your-domain/yourapp/authorized Or http://localhost:4200/authorized)
   					redirect_uri:  "http://7jpsan.github.io/spotify-auth-demo/authorized", 
   					state:  "",
   					show_dialog:  true,
   					scope:  scopes
   				};
   				this.authService.configure(ac).authorize(); // Magic happens here
   		}
   	}

• app.module.ts and/or app-routing.module.ts :

   	import { NgModule, Injectable } from  '@angular/core';
   	...
   	import { SpotifyAuthModule } from  'spotify-auth';
   	import { SpotifyAuthInterceptor2 } from  './spotify-auth.interceptor';
  
       const  routes:  Routes  = [
  
   {
   	path:  '',
   	redirectTo:  'user',
   	pathMatch:  'full'
   },
   {
   	path:  'user',
   	component:  UserComponent
   },
   ...,
   	SpotifyAuthModule.authRoutes()[0] //(Static guarded route with component)
   ];
   NgModule({
   	imports: [
   	BrowserModule,
   	HttpClientModule,
   	HttpModule,
   	SpotifyAuthModule.forRoot(),  //forRoot!!!!
   	RouterModule.forRoot(routes),
   	],
   	declarations: [ AppComponent, UserComponent, LoginComponent, AlbumsComponent ],
   	bootstrap: [ AppComponent ],
   	exports: [],
   	providers: [
   			InfoService,
   			{
   				provide:  HTTP_INTERCEPTORS,
   				//Force interception to use your new shiny headers!
   				useClass:  SpotifyAuthInterceptor2,
   				multi:  true
   			}
   		]
   	})
   export  class  AppModule {}

That is it! The code should take care of the rest for you. Enjoy! There is a demo app here https://github.com/7jpsan/spotify-auth-demo. Ignore the one present in this repo. It was split, but never removed. Self TODO :)

If anything goes wrong, please raise an issue!