using DotNetty.Buffers;
using HybirdFrameworkCore.Utils;
using Service.Charger.Common;

namespace Service.Charger.Msg
{
    public class ASDU : APCI
    {
        /// <summary>
        /// 帧类型号
        /// </summary>
        public byte FrameTypeNo { get; set; }

        /// <summary>
        /// 信息体个数
        /// </summary>
        public byte MsgBodyCount { get; set; }

        /// <summary>
        /// 传送原因-3.1.3.2 
        /// </summary>
        public UInt16 TransReason { get; set; }

        /// <summary>
        /// 公共地址
        /// </summary>
        public UInt16 PublicAddr { get; set; }

        /// <summary>
        /// 信息体地址-3个字节
        /// </summary>
        public byte[]? MsgBodyAddr { get; set; }


        public override byte[] GetBytes()
        {
            List<byte> list = new List<byte>();
            list.Add(FrameTypeNo);
            list.Add(MsgBodyCount);
            list.AddRange(BitConverter.GetBytes(TransReason));
            list.AddRange(BitConverter.GetBytes(PublicAddr));
            list.AddRange(MsgBodyAddr);

            list.AddRange(ModelConvert.Encode(this));
            return list.ToArray();
        }


        public static void ParseHeader(IByteBuffer byteBuffer, ASDU asdu)
        {
            int start = ChargerConst.ApciStartChar.Length - 1;

            asdu.PackLen = byteBuffer.GetUnsignedShortLE(start + 1);
            asdu.CtlArea = byteBuffer.GetUnsignedInt(start + 3);
            asdu.DestAddr = new[]
            {
                byteBuffer.GetByte(start + 7),
                byteBuffer.GetByte(start + 8),
                byteBuffer.GetByte(start + 9),
                byteBuffer.GetByte(start + 10),
            };
            asdu.SrcAddr = byteBuffer.GetUnsignedInt(start + 11);
            asdu.FrameTypeNo = byteBuffer.GetByte(start + 15);
            asdu.MsgBodyCount = byteBuffer.GetByte(start + 16);
            asdu.TransReason = byteBuffer.GetUnsignedShortLE(start + 17);
            asdu.PublicAddr = byteBuffer.GetUnsignedShortLE(start + 19);
            asdu.MsgBodyAddr = new[]
            {
                byteBuffer.GetByte(start + 21),
                byteBuffer.GetByte(start + 22),
                byteBuffer.GetByte(start + 23),
            };
        }
    }
}