nativescript-spotify-auth

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!