require "fiona7/obj_class_name_mangler"
require "fiona7/obj_class_name_demangler"

module Fiona7
  class TypeLoader
    class AttributeTypeHelper
      attr_accessor :cms_attribute

      def initialize(cms_attribute)
        self.cms_attribute = cms_attribute
      end

      def real_type
        self.cms_attribute.attribute_type
      end

      def virtual_type
        ::JSON.parse(cms_attribute.help_text(:de))['type'].to_sym rescue nil
      end
    end
    
    attr_reader :obj_class, :rc_obj_class

    def initialize(obj_class)
      self.obj_class    = obj_class
      self.rc_obj_class = RailsConnector::Meta::EagerLoader.instance.obj_class(Fiona7::ObjClassNameMangler.new(self.obj_class).mangle)

    end

    def load(type_definition)
      if Fiona7.mode == :legacy
        type_definition.add_attr('title', :string, 'title', :string)
        type_definition.add_attr('valid_from', :date, 'valid_from', :date)
        type_definition.add_attr('valid_until', :date, 'valid_until', :date)
        type_definition.add_attr('channels', :stringlist, 'channels', :stringlist)
        type_definition.add_attr('suppress_export', :enum, 'suppress_export', :enum, ['0', '1'])

        if self.rc_obj_class.obj_type == 'publication' || self.rc_obj_class.obj_type == 'document'
          type_definition.add_attr('body', :html, 'body', :html)
        elsif self.rc_obj_class.obj_type == 'image' || self.rc_obj_class.obj_type == 'generic'
          type_definition.add_attr('blob', :binary, 'blob', :binary)
        end
      end

      self.rc_obj_class.custom_attributes.each do |real_name, cms_attribute|
        next if Fiona7::Initializer::ATTRIBUTES_MAP.key?(real_name)

        # TODO: move this to a better place ~> AttributeNameDemangler
        if Fiona7.mode == :standalone
          virtual_name = real_name.sub("s_#{self.rc_obj_class.name}__", "")
        else
          virtual_name = real_name
        end

        type_helper  = AttributeTypeHelper.new(cms_attribute)
        real_type    = type_helper.real_type
        virtual_type = type_helper.virtual_type || real_type
        values       = cms_attribute.values

        type_definition.add_attr(virtual_name, virtual_type, real_name, real_type, values)
      end
    end

    protected
    attr_writer :obj_class, :rc_obj_class

  end
end