module Polygallery
  module HasPolyphotos
    extend ActiveSupport::Concern

    included do
      def defaults
        klass = self.class_name.present? ? Kernel.const_get(self.class_name) : Gallery
        klass::DEFAULTS
      end
    end

    module ClassMethods
      def has_polyphotos(title='photos', options={})
        if title.is_a? Hash
          options = title
          title = 'photos'
        end

        # raise 'BOOM' if options.keys.any?
        settings = options
        has_many title.to_sym, settings[:associations][:photos]
        accepts_nested_attributes_for title.to_sym, settings[:nested_attributes][:photos] # TODO: get the actual settings somehow
        after_initialize do
          # raise galleryable_type if galleryable_type.present?
          send(title.to_sym).build(
              :galleryable_id => galleryable_id,
              :galleryable_type => galleryable_type,
              :gallery_title => self.title
          ) unless send(title.to_sym).any?
        end
        include HasPolyphotos::LocalInstanceMethods
      end
    end

    module LocalInstanceMethods
      def set_nest(photo)
        photo.gallery ||= self
        photo.galleryable_id ||= galleryable_id
        photo.galleryable_type ||= galleryable_type
        photo.gallery_title ||= title
      end
    end
  end
end

ActiveRecord::Base.send :include, Polygallery::HasPolyphotos