require 'scrivito/attribute_content'
require 'fiona7/type_register'

module Scrivito
  module AttributeContent
    module ClassMethods
      # patch attribute to notify type register
      alias_method :orig_attribute, :attribute
      def attribute(name, type, options = {})
        orig_attribute(name, type, options)
      ensure
        if self.name.present?
          # to_s is friendly to shadowclassing
          Fiona7::TypeRegister.instance.add_usr_attr(self.to_s, name, type, options[:values])
        end
      end

      # support shadow classes
      def description_for_editor
        to_s.titleize
      end

      # support shadow classes
      def as_json
        {
          name: to_s,
          descriptionForEditor: description_for_editor,
          attributes: attribute_definitions.map(&:as_json),
        }
      end


      def register_attribute_definitions(obj_class)
        type_register = Fiona7::TypeRegister.instance
        self.attribute_definitions.each do |attribute_definition|
          # to_s instead of name for shadowclassing
          type_register.add_usr_attr(obj_class, attribute_definition.name, attribute_definition.type, attribute_definition.values.presence)
        end
      end

      # support legacy attribute names
      def assert_valid_attribute_name(name)
        if name == 'id'
          raise ScrivitoError, "Invalid attribute name 'id'. 'id' is reserved for the system."
        end

        if name !~ /\A[A-Za-z][A-Za-z0-9_]*\z/ # <-- PATCH HERE
          raise ScrivitoError, "Invalid attribute name '#{name}'. " \
              "The first character must be an ASCII letter, " \
              "subsequent characters may also be digits or underscores."
        end

        if name.size > 50
          raise ScrivitoError, "Invalid attribute name '#{name}'. " \
              "Attribute names must not be longer than 50 characters."
        end
      end
    end
  end
end