using Edge.Core.Parser.BinaryParser;
using Edge.Core.Parser.BinaryParser.MessageEntity;
using Edge.Core.Parser.BinaryParser.Util;
using ShengJu_CUT100_DES.MessageEntity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ShengJu_CUT100_DES
{
    public class Parser : ParserBase
    {
        public Parser() : base(new MessageTemplateLookup())
        {
        }

        public override byte[] Serialize(MessageTemplateBase message)
        {
            //add a temp value for make base.Serialize go through and then fill back the real length.
            ((MessageBase)message).Length = 4;
            var bytesWithoutCheck = base.Serialize(message);
            bytesWithoutCheck = new byte[] { 
                // real length
                (byte)(bytesWithoutCheck.Length + 1) }
                .Concat(bytesWithoutCheck.Skip(1)).ToArray();
            return bytesWithoutCheck.Concat(new byte[] { CacualteCHECK(bytesWithoutCheck) }).ToArray();
        }

        public static byte CacualteCHECK(byte[] rawMessageWithoutCHECK)
        {
            int sum = 0;
            for (int i = 0; i < rawMessageWithoutCHECK.Length; i++)
            {
                sum += rawMessageWithoutCHECK[i];
            }

            return (byte)~BitConverter.GetBytes(sum)[0];
        }
    }
}