using PlcSiemens.O;
using PlcSiemens.Protocol.Common;

namespace PlcSiemens.Protocol
{
    /// <summary>
    /// 返回数据包参数
    /// </summary>
    public class ParamsResponse
    {
        public byte[] Head { get; set; }// 0x00 0x01 0x12
        public byte PLen { get; set; }  // par len 0x04
        public byte Uk { get; set; }    // unknown
        public byte Tg { get; set; }    // type and group  (4 bits type and 4 bits group)
        public byte SubFun { get; set; } // subfunction
        public byte Seq { get; set; }   // sequence
        public ushort Rsvd { get; set; } // Reserved 0x0000
        public ResultCode Err { get; set; }   // Error Code

        public ushort PacketLength = 0x0C;

        public ParamsResponse()
        {
            PLen = 0x08;
        }

        public void Build(ByteBuffer buffer)
        {
            Head = buffer.PopBytes(3);
            PLen = buffer.PopByte();
            Uk = buffer.PopByte();
            Tg = buffer.PopByte();
            SubFun = buffer.PopByte();
            Seq = buffer.PopByte();
            Rsvd = buffer.PopUshort();
            Err = (ResultCode)buffer.PopUshort();
        }
    }
}