# frozen_string_literal: true

module OMCMS
  module Response
    class Error < StandardError
      attr_reader :status

      def initialize(response)
        super
        return unless response

        response = add_body_to_error(response) unless response.respond_to? :body

        response.body.each do |key, value|
          instance_variable_set("@#{key}", value)
          self.class.send(:attr_reader, key)
        end
      end

      def to_json(*_args)
        instance_variables.to_h do |attribute|
          key = attribute.to_s.gsub("@", "")
          [snakecase(key), instance_variable_get(attribute)]
        end
      end

      private

      def add_body_to_error(response)
        Struct.new(
          body: {
            name: response.class,
            message: response.message,
            data: response
          }
        )
      end

      def snakecase(data = "")
        data.gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
            .gsub(/([a-z\d])([A-Z])/, '\1_\2')
            .tr("-", "_")
            .gsub(/\s/, "_")
            .gsub(/__+/, "_")
            .downcase
      end
    end
  end
end