Class: Lily

Inherits:
Object
  • Object
show all
Defined in:
lib/lily.rb

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Lily

Returns a new instance of Lily.



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# File 'lib/lily.rb', line 10

def initialize(*args)
  @args = args
  @keys = {
    "public" => "238b1080c5a14212261f2c963baaf2db",
    "private" => "85fbaa6644c31d879c3e004fbddb82bf"
  }
  @lily_json = self.get_lily_json
  @api_url = "http://ws.audioscrobbler.com/2.0/"
  @token ||= self.token
end

Instance Method Details

#auth ⇒ Object 



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# File 'lib/lily.rb', line 65

def auth
  lastfmURL = "http://www.last.fm/api/auth/?api_key=#{@keys.public}&token=#{@token}"
  print "Press Enter once you've given access..."
  Launchy.open(lastfmURL)
  STDIN.gets
end

#format_params(params) ⇒ Object 



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# File 'lib/lily.rb', line 32

def format_params(params)
  path_arr = []
  sig_str = ""
  params = params.sort_by { |key, value| key }
  params.each do |key, value|
    path_arr.push("#{key}=" + URI.encode(value.to_s))
    sig_str += key + value.to_s if (key != "format")
  end
  sig_str += @keys.private
  sig = Digest::MD5.hexdigest(sig_str)
  path_arr.push("api_sig=#{sig}")
  path = path_arr.join("&")
  return path
end

#get_album_info(album, artist) ⇒ Object 



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# File 'lib/lily.rb', line 47

def get_album_info(album, artist)
  url = "#{@api_url}?method=album.getinfo&api_key=#{@keys.public}&artist=#{URI.encode(artist)}&album=#{URI.encode(album)}&format=json"
  res = JSON.parse(HTTP.get(url))
  
  begin
    res.album
  rescue
    puts "Album does not exist."
  end
end

#get_lily_json ⇒ Object 



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# File 'lib/lily.rb', line 21

def get_lily_json
  begin # Make this more concise later
    content = File.read(ENV['HOME'] + '/.lily.json')
    lily_json = JSON.parse(content)

    # returns {sk, signature}
  rescue
    puts "~/.lily.json appears empty"
  end
end

#help ⇒ Object 



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# File 'lib/lily.rb', line 262

def help
  puts """
  Lily, the Last.fm CLI.

  Usage:
      lily init
      lily help
      lily (scrobble | love | unlove) song (<song> <artist>) [<album>]
      lily (love | unlove) album (<album> <artist> | <eponymous album>)
      lily scrobble album (<album> <artist> | <eponymous album>) [--live]
  """
end

#init ⇒ Object 



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# File 'lib/lily.rb', line 275

def init
  auth
  session_key
  puts "Initialized ~/.lily.json successfully"
end

#love ⇒ Object 



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# File 'lib/lily.rb', line 154

def love
  # last.fm/api/show/track.love
  command = @args.shift

  if command == "song"
    track, artist = @args[0], @args[1]
    if @args[2] then album = @args[2] end # album name is optional

    body = self.format_params({
      "track" => track,
      "artist" => artist,
      "method" => "track.love",
      "sk" => @lily_json.session_key,
      "api_key" => @keys.public,
      "format" => "json",
      "album" => album
    })

    res = HTTP.post(@api_url, :body => body)

    puts "#{track} by #{artist} has been loved ♥"
  elsif command == "album"
    # we've got you covered, eponymous albums
    if @args[1] == nil then album, artist = @args[0], @args[0] else album, artist = @args[0], @args[1] end

    album_info = get_album_info(album, artist)
    album_length = 0

    album_info.tracks.track.each do |track|
      body = self.format_params({
        "track" => track.name,
        "artist" => artist,
        "method" => "track.love",
        "sk" => @lily_json.session_key,
        "api_key" => @keys.public,
        "format" => "json",
        "album" => album
      })

      res = HTTP.post(@api_url, :body => body)
    end

    puts "#{album} by #{artist} has been loved ♥"
  else
    puts "huh"
  end
end

#run ⇒ Object 



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# File 'lib/lily.rb', line 250

def run
  first = @args.shift

  case first
  when 'scrobble' then self.scrobble
  when 'init' then self.init
  when 'love' then self.love
  when 'unlove' then self.unlove
  else self.help
  end
end

#scrobble ⇒ Object 



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# File 'lib/lily.rb', line 83

def scrobble
  # last.fm/api/show/track.scrobble
  command = @args.shift
  timestamp = Time.now.utc.to_i # UTC time since unix epoch in seconds

  if command == "song"
    # song
    track, artist = @args[0], @args[1]

    if @args[2] then album = @args[2] end # album name is optional

    body = self.format_params({
      "artist" => artist,
      "method" => "track.scrobble",
      "sk" => @lily_json.session_key,
      "timestamp" => timestamp,
      "track" => track,
      "api_key" => @keys.public,
      "format" => "json",
      "album" => album
    })

    res = HTTP.post(@api_url, :body => body)

    puts "#{track} by #{artist} has been scrobbled."
  elsif command == "album"
    # album

    # we got eponymous albums covered :)
    if @args[1] == nil then album, artist = @args[0], @args[0] else album, artist = @args[0], @args[1] end

    album_info = get_album_info(album, artist)
    album_length = 0
    
    # get full length of album in seconds
    album_info.tracks.track.each do |track|
      album_length += track.duration.to_i
    end
      
    puts "Whole album length: #{album_length} seconds."
      
    # set time when album should have started (a.k.a. album length ago), or if the '--live' option is specified then just start it right now
    if @args[-1] == "--live" then time = timestamp else time = timestamp - album_length end

    puts "Scrobbling your album starting at " + Time.at(time).utc.strftime("%I:%M:%S %p") + " UTC"
      
    # begin scrobbling
    album_info.tracks.track.each do |track|
      time += track.duration.to_i
      
      # scrobble track
      body = self.format_params({
        "artist" => track.artist.name,
        "method" => "track.scrobble",
        "sk" => @lily_json.session_key,
        "timestamp" => time,
        "track" => track.name,
        "api_key" => @keys.public,
        "format" => "json",
        "album" => album_info.name
      })

      res = HTTP.post(@api_url, :body => body)
    end

    puts "#{album} by #{artist} has been scrobbled."
  else
    puts "huh"
  end
end

#session_key ⇒ Object 



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# File 'lib/lily.rb', line 72

def session_key
  sig = Digest::MD5.hexdigest("api_key#{@keys.public}methodauth.getSessiontoken#{@token}#{@keys.private}")
  session = "http://ws.audioscrobbler.com/2.0/?method=auth.getSession&api_key=#{@keys.public}&api_sig=#{sig}&token=#{@token}&format=json"
  res = JSON.parse(HTTP.get(session))
  sk = res.session['key']

  File.open(ENV['HOME'] + '/.lily.json', 'w+') do |file|
    file.write(JSON.pretty_generate({"session_key" => sk}))
  end
end

#token ⇒ Object 



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# File 'lib/lily.rb', line 58

def token
  url = "http://ws.audioscrobbler.com/2.0/?method=auth.getToken&api_key=#{@keys.public}&api_sig=#{@keys.private}&format=json"
  res = JSON.parse(HTTP.get(url))
  # return res.token
  res.token
end

#unlove ⇒ Object 



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# File 'lib/lily.rb', line 202

def unlove
  # last.fm/api/show/track.unlove
  command = @args.shift

  if command == "song"
    track, artist = @args[0], @args[1]
    if @args[2] then album = @args[2] end # album name is optional

    body = self.format_params({
      "track" => track,
      "artist" => artist,
      "method" => "track.unlove",
      "sk" => @lily_json.session_key,
      "api_key" => @keys.public,
      "format" => "json",
      "album" => album
    })

    res = HTTP.post(@api_url, :body => body)

    puts "#{track} by #{artist} has been unloved :("
  elsif command == "album"
    # we've got you covered, eponymous albums
    if @args[1] == nil then album, artist = @args[0], @args[0] else album, artist = @args[0], @args[1] end

    album_info = get_album_info(album, artist)
    album_length = 0

    album_info.tracks.track.each do |track|
      body = self.format_params({
        "track" => track.name,
        "artist" => artist,
        "method" => "track.unlove",
        "sk" => @lily_json.session_key,
        "api_key" => @keys.public,
        "format" => "json",
        "album" => album
      })

      res = HTTP.post(@api_url, :body => body)
    end

    puts "#{album} by #{artist} has been unloved :("
  else
    puts "huh"
  end
end

#version ⇒ Object 



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# File 'lib/lily.rb', line 281

def version
  Version::STRING
end