gistfile1.txt

class Song
  # Create a new Song.
  #
  # path - The spotify path
  #
  # Returns nothing.
  def initialize(options={})
    self.path = options[:path] if options[:path]
    cache_album_art
  end

  # Sets the path for this Song. Once the path is set, go in and read the file
  # from disk and intialize those values in-memory.
  #
  # path - The String path on disk of the music file.
  #
  # Returns the path.
  def path=(path)
    @path = path.chomp
    spotify_id = path
    track = MetaSpotify::Track.lookup(spotify_id) rescue nil
    return unless track
    @artist  = Artist.new(:name => track.artists.first.try(:name))
    @album   = Album.new(:artist => @artist, :name => track.album.name)
    @title   = track.name
    @seconds = track.length.to_i

    @path
  end

  # Cache a songs album art.
  #
  # Stores a cache of the album art data to Play.album_art_cache_path
  # so we don't have to shell out for every song to get the album art.
  #
  # Returns the String path if we've written new art.
  def cache_album_art
    FileUtils.mkdir_p(Play.album_art_cache_path)
    art_cache_path = "#{Play.album_art_cache_path}/#{art_file}"

    if !File.exists?(art_cache_path)
      json = JSON.parse(open("https://embed.spotify.com/oembed/?url=#{@path}").read) rescue {}
      puts "Fetched #{json.inspect}"
      if url = json.fetch("thumbnail_url", nil)
        data = open(url).read
        puts "Writing to #{art_cache_path}"
        File.open(art_cache_path, 'wb') do |file|
          file.write(data)
        end
        art_cache_path
      end
    end
  end
end