module JamRuby
  class PerformanceSample < ActiveRecord::Base
    belongs_to :user, :class_name => "JamRuby::User", :foreign_key => "user_id"
    belongs_to :claimed_recording, :class_name => "JamRuby::ClaimedRecording" :foreign_key => "claimed_recording_id"

    validates :user_type_recording_unique :if => lambda { |p| p.type == "jamkazam" }
    validates :user_type_service_unique :if => lambda { |p| p.type != "jamkazam" }

    def user_type_recording_unique
      match = PerformanceSample.exists?(:user_id => user.id, :claimed_recording_id => self.claimed_recording_id)
      raise "You already have this JamKazam recording listed as a sample" if match
    end

    def user_type_service_unique
      match = PerformanceSample.exists?(:user_id => user.id, :service_id => self.service_id)
      raise "You already have this #{self.type} sample listed (#{self.service_id}." if match
    end
  end
end