recording.rb

class Recording < ActiveRecord::Base
  has_many :artistic_contributions, dependent: :destroy, include: [:artistic_role, :artist]
  has_many :artists, through: :artistic_contributions
  has_many :editions, class_name: 'RecordingEdition', dependent: :destroy
  has_many :blog_posts, foreign_key: :podcast_recording_id
  
  validates :title, :base_file_name, presence: true
  
  before_save :refresh_editions

  acts_as_indexed :fields => [:title]
  
  accepts_nested_attributes_for :artistic_contributions, allow_destroy: true
  
  def composer_contributions
    artistic_contributions.select do |c|
      c.artistic_role.name_in_credits == 'composer'
    end
  end
  
  def performer_contributions
    artistic_contributions - composer_contributions
  end
  
  def edition(*flavors)
    flavors.each do |flavor|
      editions.each do |edition|
        return edition if edition.flavor == flavor
      end
    end
    nil
  end
  
  def refresh_editions
    self.editions.destroy_all
    RecordingEdition::FLAVORS.each do |flavor|
      edition = RecordingEdition.new(recording: self)
      edition.flavor = flavor
      editions << edition if edition.exists?
    end
    if editions.empty?
      errors.add 'base_file_name', "does not exist"
    end
  end
  
  def primary_blog_post
    @primary_blog_post ||= blog_posts.order(:created_at).last
  end
  
end