module Extensions
  module Site
    module I18n

      extend ActiveSupport::Concern

      included do

        ## fields ##
        field :locales, :type => Array, :default => []

        ## callbacks ##
        after_validation :add_missing_locales_for_all_pages

      end

      module InstanceMethods

        def locales=(array)
          array = [] if array.blank?; super(array)
        end

        def default_locale
          self.locales.first || Locomotive.config.site_locales.first
        end

        protected

        def add_missing_locales_for_all_pages
          if self.locales_changed?
            list = self.pages.to_a

            while !list.empty? do
              page = list.pop
              begin
                page.send(:set_slug_and_fullpath_for_all_locales, self.locales)

                page.save

              rescue TypeError => e
                list.insert(0, page)
              end
            end
          end
        end

      end

    end
  end
end