rspotify

RSpotify

This is a ruby wrapper for the Spotify Web API.

Features

• Full documentation
• Full API Endpoint coverage
• OAuth and other authorization flows

Installation

Add this line to your application's Gemfile:

gem 'rspotify'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rspotify

Usage

RSpotify was designed with usability as its primary goal, so that you can forget the API and intuitively interact with your playlists, favorite artists, users and so on.

You can write things like my_playlist.tracks.sort_by(&:popularity).last.album without having to think which API calls must be done. RSpotify fills the gaps for you.

Below are some basic usage examples. Check the documentation for the complete reference.

…

Find by id:

arctic_monkeys = RSpotify::Artist.find('7Ln80lUS6He07XvHI8qqHH')
arctic_monkeys.related_artists #=> (Artist array)

am = RSpotify::Album.find('41vPD50kQ7JeamkxQW7Vuy')
am.album_type #=> "single"

do_i_wanna_know = RSpotify::Track.find('2UzMpPKPhbcC8RbsmuURAZ')
do_i_wanna_know.album #=> (Album object)

me = RSpotify::User.find('guilhermesad')
me.uri #=> "spotify:user:guilhermesad"

# Or find several objects at once:

ids = %w(2UzMpPKPhbcC8RbsmuURAZ 7Jzsc04YpkRwB1zeyM39wE)

my_tracks = RSpotify::Track.find(ids)
my_tracks.size #=> 2

Some data require authentication to be accessed, such as playlists' details. You can easily get your credentials here.

Then just copy and paste them like so:

…

Rails + OAuth

You might want your application to access a user's Spotify account.

For instance, suppose you want your app to create playlists for the user based on their taste, or to add a feature that syncs user's playlists with some external app.

If so, add the following to your application (Remember to get your credentials)

# config/application.rb

RSpotify::authenticate("", "")

# config/initializers/omniauth.rb

require 'rspotify/oauth'

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :spotify, "", "", scope: 'user-read-email playlist-modify-public user-library-read user-library-modify'
end

OmniAuth.config.allowed_request_methods = [:post, :get]

You should replace the scope values for the ones your own app will require from the user. You can see the list of available scopes in here.

Next, make a link so the user can log in with his Spotify account:

And create a route to receive the callback:

# config/routes.rb

get '/auth/spotify/callback', to: 'users#spotify'

Remember you need to tell Spotify this address is white-listed. You can do this by adding it to the Redirect URIs list in your application page. An example of Redirect URI would be http://localhost:3000/auth/spotify/callback.

Finally, create a new RSpotify User with the response received:

…

Refreshing the access token

The user's access token is automatically refreshed by RSpotify when needed. This is especially useful if you persist the user data on a database. This way, the user only need log in to Spotify once during the use of the application.

Additionally, you can store a proc that is invoked when a new access token is generated. This give you the opportunity to persist the new access token for future use. The proc will be invoked with two arguments: the new access token and the lifetime of the token in seconds. For example, if lifetime value returned from Spotify is 3600, you know that the token will be good for one hour.

In the sample code below, the credentials have been retrieved from some persistent store such as AWS SecretsManager.

callback_proc = Proc.new { |new_access_token, token_lifetime |
   now = Time.now.utc.to_i  # seconds since 1/1/1970, midnight UTC
   deadline = now+token_lifetime
   #puts("new access token will expire at #{Time.at(deadline).utc.to_s}")
   self.save_new_access_token(new_access_token)
 }

spotify_user = RSpotify::User.new(
  {
    'credentials' => {
       "token" => self.credentials["access_token"],
       "refresh_token" => self.credentials["refresh_token"],
       "access_refresh_callback" => callback_proc
    } ,
    'id' => self.credentials["user_id"]
  })

RSpotify provides a way to facilitate persistence:

hash = spotify_user.to_hash
# hash containing all user attributes, including access tokens

# Use the hash to persist the data the way you prefer...

# Then recover the Spotify user whenever you like
spotify_user = RSpotify::User.new(hash)
spotify_user.create_playlist!('my_awesome_playlist') # automatically refreshes token

Getting raw response

To get the raw response from Spotify API requests, just toggle the raw_response variable:

RSpotify.raw_response = true
RSpotify::Artist.search('Cher') #=> (String with raw json response)

Notes

If you'd like to use OAuth outside rails, have a look here for the requests that need to be made. You should be able to pass the response to RSpotify::User.new just as well, and from there easily create playlists and more for your user.

Contributing

1. Fork it ( https://github.com/guilhermesad/rspotify/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Test your changes (bundle exec rspec)
4. Commit your changes (git commit -am 'Add some feature')
5. Push to the branch (git push origin my-new-feature)
6. Create a new Pull Request