Web API Support

web-api-create-playlist.js

var refreshToken = 'xxxxxxxxxx';  // obtained using Authorization Code flow
var spotifyApi = new SpotifyWebApi({
  scope : ['user-read-private', 'user-read-email', 'playlist-modify-public'],
  clientId : 'xxxxxxxxxx',
  clientSecret : 'xxxxxxxxxxxxxxx'
});

// we set the refresh token that will be used to obtain a fresh access token
spotifyApi.setRefreshToken(refreshToken);

// we refresh the access token
spotifyApi.refreshAccessToken()
  .then(function(data) {
    spotifyApi.setAccessToken(data['access_token']);
    
    // we call the API
    spotifyApi.createPlaylist('MYuserID', 'My Cool Playlist', { 'public' : true })
      .then(function(data) {
        console.log("Created a new playlist");
      }, function(err) {
        console.log('Something went wrong with creating playlist!', err);
      });
});

// NOTE: This is a very naive approach. Ideally, the token should not be refreshed every
// time there is a call to the API. In order to to this properly, the status code from the
// request to the API should be checked, so if it is 401 (Unauthorized), the token should
// be refreshed and, if a new access token is obtened, the initial request should be retried
// This seems to be using the Spotify Web API Node wrapper. Keep an eye on
// https://github.com/thelinmichael/spotify-web-api-node/pull/25 which will expose status codes