# == Schema Information
#
# Table name: registry_values
#
#  id         :integer          not null, primary key
#  data       :json
#  created_at :datetime         not null
#  updated_at :datetime         not null
#  registry_id :integer
#

class RegistryValue < ActiveRecord::Base

  include ValidationMessages

  # ================
  # = Associations =
  # ================

  belongs_to :registry

  # ===============
  # = Validations =
  # ===============

  validates :order, presence: { message: PRESENCE_MESSAGE },
                    uniqueness: { scope: :registry_id,
                                  message: UNIQUENESS_MESSAGE }
  # =============
  # = Callbacks =
  # =============

  before_validation :set_order, if: :registry_id_changed?

  # Prints a representation of the registry_value according to the locale
  # If there's a label, then the registry value is a complex object, return the label
  # else returns the registry value is a simple string, returns the string
  def to_s(locale=nil)
    return data if locale.nil?

    if data["label"].present?
      data["label"][locale]
    elsif data["value"].present?
      data["value"][locale] || data["value"]
    end
  end

  # ============================
  # = Private instance methods =
  # ============================
  def set_order
    self.order = registry.registry_values.where.not(id: id).maximum(:order).to_i + 1
  end

end