Class: Muzak::Playlist

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(pname) ⇒ Playlist

Returns a new instance of Playlist.



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# File 'lib/muzak/playlist.rb', line 25

def initialize(pname)
  @filename = self.class.path_for pname

  if File.exist?(@filename)
    phash = YAML.load_file(@filename)
    @songs = phash["songs"]
  else
    @songs = []
  end

  sync!
end

Instance Attribute Details

#filename ⇒ Object

Returns the value of attribute filename.



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# File 'lib/muzak/playlist.rb', line 3

def filename
  @filename
end

#songs ⇒ Object

Returns the value of attribute songs.



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# File 'lib/muzak/playlist.rb', line 3

def songs
  @songs
end

Class Method Details

.delete!(pname) ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 13

def self.delete!(pname)
  File.delete(path_for(pname)) if exist? pname
end

.exist?(pname) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/muzak/playlist.rb', line 9

def self.exist?(pname)
  File.exist?(path_for(pname))
end

.path_for(pname) ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 5

def self.path_for(pname)
  File.join(PLAYLIST_DIR, pname) + ".yml"
end

.playlist_names ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 17

def self.playlist_names
  Dir.entries(PLAYLIST_DIR).reject do |ent|
    ent.start_with?(".")
  end.map do |ent|
    File.basename(ent, File.extname(ent))
  end
end

Instance Method Details

#add(songs) ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 42

def add(songs)
  # coerce a single song into an array
  [*songs].each do |song|
    next if @songs.include?(song)
    @songs << song
  end

  sync!
end

#delete(songs) ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 52

def delete(songs)
  [*songs].each { |song| @songs.delete(song) }

  sync!
end

#name ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 38

def name
  File.basename(@filename, File.extname(@filename))
end

#shuffle! ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 58

def shuffle!
  @songs.shuffle!
end

#sync! ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 62

def sync!
  File.open(@filename, "w") { |io| io.write to_hash.to_yaml }
end

#to_hash ⇒ Object 



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# File 'lib/muzak/playlist.rb', line 66

def to_hash
  { "songs" => @songs }
end