class Artist < ActiveRecord::Base
  has_many :albums, :conditions => ['has_pic = 1'], :order => 'year ASC', :dependent => :destroy
  has_many :artist_links, :dependent => :destroy
  has_many :artist_aliases, :dependent => :destroy
  has_many :tracks, :through => :track_artists
  has_many :playlists
  
  after_initialize :prepare_description
  after_save :clear_cache
  
  def status_str
    %w(loading ok fail)[self.status]
  end
  
  def load_again!
    albums.each(&:destroy)
    artist_links.each(&:destroy)
    artist_aliases.each(&:destroy)
    self.status = 0
    save!
    Delayed::Job.enqueue(LoadArtistJob.new(name))
    clear_cache
  end
  
  def serialize
    {
      name: name,
      original_name: original_name,
      url_name: name.gsub(" ", "+"),
      pic_url: pic_url,
      desc: desc,
      albums: albums.map(&:serialize),
      artist_links: artist_links.map(&:serialize)
    }
  end
  
  def clear_cache
    Rails.cache.delete "artist_#{id}"
  end

private
  
  def prepare_description
    self.desc.gsub!(/[\[<].*?[\]>]/, '') unless self.desc.nil?
  rescue
    # WTF?!
  end
end