using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using BatCharging.Model;

namespace BatCharging.Service
{
    /// <summary>
    /// 解包充电机应答站控鉴权认证的字节列表
    /// </summary>
    public class MsgSignResDecoder
    {
        /// <summary>
        /// 解包充电机应答站控鉴权认证的字节列表
        /// </summary>
        /// <param name="msgRecv">接收到字节数组</param>
        /// <returns>充电机应答的鉴权消息</returns>
        public AuthRes GetAuthResMsg(byte[] msgRecv)
        {
            AuthRes msgResult = null;
            if (msgRecv != null)
            {
                int num = msgRecv.Length;
                if (num >= 29)
                {
                    msgResult = new AuthRes
                    {
                        ConnSeq = ByteUtils.ToUInt16(msgRecv, 25),
                        AuthResult  = msgRecv[27],
                        FailReason = msgRecv[28]
                    };
                }
            }
            else
            {
                return null;
            }
            return msgResult;
        }
    }
}