module Eancom
  module Edifact
    class Item

      attr_accessor :hash

      def initialize
        @hash = {}
      end

      def << (segment)
        if name = group_name(segment)
          @hash[name] = [] if @hash[name].nil?
          @hash[name] << segment.to_json_hash
        else
          @hash.merge!(segment.to_json_hash)
        end
      end

      def to_json_hash
        @hash
      end

      def empty?
        @hash.empty?
      end

      private

      def group_name(segment)
        if segment.item_group_name
          segment.item_group_name
        else
          segment.group_name
        end
      end

    end
  end
end