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 :type, presence:true, length: {maximum: 100}
    validates :username, presence:true, length: {maximum: 100}
    validate :user_type_recording_unique, :if => lambda { |p| p.type == "jamkazam" }
    validate :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 ConflictError, "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 ConflictError, "You already have this #{self.type} sample listed (#{self.service_id}." if match
    end

    def self.index(options = {})
      raise JamArgumentError, "The user is not specified." if options[:id].blank?
      PerformanceSample.where("user_id = ?", options[:id])
    end

    def self.save(current_user, options = {})
      raise PermissionError, "You do not have permission to perform this operation" if current_user.nil? || options[:user_id] != current_user.id
      PerformanceSample.create(:user => user, :type => options[:type], :username => options[:username])
    end

    def self.destroy(current_user, options = {})
      raise PermissionError, "You do not have permission to perform this operation" if current_user.nil? || options[:user_id] != current_user.id
      raise JamArgumentError, "The performance sample ID is missing." if options[:id].blank?
      PerformanceSample.destroy_all("id = ?", options[:id])
    end
  end
end