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

namespace BatCharging.Service
{
    /// <summary>
    ///监控平台应答充电启动完成帧- 4.1.7 
    /// </summary>
    internal class MsgStartFsdResEncoder
    {
        /// <summary>
        /// 获取监控平台应答充电启动完成帧字节列表
        /// </summary>
        /// <param name="resResult">成功标识.0:成功；1:失败</param>
        /// <param name="failReason">失败原因.0:成功 1:交易流水号数据异常 2:充电方式数据异常 </param>
        /// <returns>监控平台应答充电启动完成帧字节列表</returns>
        public byte[] GetStartChargingFinishedRes(byte[] destAddr,byte resResult, byte failReason)
        {
            byte[] result = null;

            APCI headAPCI = new APCI();
            headAPCI.StartChar = CmnChargerConst.APCI_START_CHAR;
            headAPCI.PackLen = 0;  //临时赋值为零,具体数值看下面的计算结果
            headAPCI.CtlArea = 0;  //控制域
            headAPCI.DestAddr = destAddr;//目的地址
            headAPCI.SrcAddr = 0;//源地址，本系统中，源地址统一为：00000000（即为0）

            byte randomNum = CmnChargerParam.GetByteRandomNum();

            ASDU headASDU = new ASDU();
            headASDU.FrameTypeNo = 45;   //帧类型号
            headASDU.MsgBodyCount = 1;   //信息体个数
            headASDU.TransReason = 4;    //传送原因
            headASDU.PublicAddr = 0;     //公共地址
            headASDU.MsgBodyAddr = new byte[] { 0, 0, 0 };  //信息体地址

            ChargingStartFsdRes startFsdRes = new ChargingStartFsdRes();
            startFsdRes.RecordType = 0x02;
            startFsdRes.Result = resResult;
            startFsdRes.FailReason = failReason;

            headASDU.MsgBodyContents = GetMsgContents(startFsdRes);          //信息体
            headAPCI.PackLen = Convert.ToUInt16(24 + headASDU.MsgBodyContents.Length);  //报文长度

            List<byte> lstResult = MsgHeadApciEncoder.BuildBaseAPCI(headAPCI);
            lstResult.AddRange(MsgHeadAsduEncoder.BuildBaseASDU(headASDU).ToArray());

            result = lstResult.ToArray();

            return result;
        }

        /// <summary>
        /// 获取启动完成帧应答信息体字节数组
        /// </summary>
        /// <param name="startFsdRes">启动完成帧应答信息</param>
        /// <returns>启动完成帧信息体字节数组</returns>
        private byte[] GetMsgContents(ChargingStartFsdRes startFsdRes)
        {
            byte[] results = null;
            if (startFsdRes != null)
            {
                List<byte> lstContent = new List<byte>();
                lstContent.Add(startFsdRes.RecordType);
                lstContent.Add(startFsdRes.Result);
                lstContent.Add(startFsdRes.FailReason);
                results = lstContent.ToArray();
            }
            return results;
        }


    }
}