using Aitex.Core.Utilities;
using MECF.Framework.Common.Device.PowerSupplier;
using MECF.Framework.Common.Net;
using MECF.Framework.Common.Utilities;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MECF.Framework.Common.Device.Wago
{
    public class WagoMessage : INetMessage<WagoCommand>
    {
        #region 常量 
        private const int DI_READ_CMD = 1;
        private const int DO_READ_CMD = 2;
        private const int AI_READ_CMD = 3;
        private const int AO_READ_CMD = 4;
        #endregion

        #region 属性
        public int ProtocolHeadBytesLength { get; set; } = 8;

        public int ErrorCode { get; set; }

        public string ErrorMsg { get; set; }

        public byte[] HeadBytes { get; set; }
        public byte[] ContentBytes { get; set; }
        public byte[] SendBytes { get; set; }
        #endregion

        #region 内部变量
        IByteTransform byteTransform = new BigEndianByteTransformBase();
        #endregion

        public bool CheckDataLegal()
        {
            //第二个字节高位为0x80,设备报错
            if ((HeadBytes[HeadBytes.Length-1] & 0x80) == 0x80)
            {
                ErrorCode = (int)NetErrorCode.DeviceError;
                ErrorMsg = GetDeviceMessage(ContentBytes[0]);
                return false;
            }
            return true;
        }
        /// <summary>
        /// 设备错误信息
        /// </summary>
        /// <returns></returns>
        private string GetDeviceMessage(byte deviceErrorCode)
        {
            switch (deviceErrorCode)
            {
                case 0x01:
                    return "Invalid Function";
                case 0x02:
                    return "Invalid Address";
                case 0x03:
                    return "Invalid Data";
                case 0x04:
                    return "Slave Device Error";
                case 0x05:
                    return "Error Confirm";
                case 0x06:
                    return "Slave Device Busy";
                default:
                    return "Unkown Error Code";
            }
        }

        public bool CheckHeadBytesLegal()
        {
            //地址与指令同时一致
            return SendBytes[0] == HeadBytes[0] && SendBytes[1] == HeadBytes[1] && HeadBytes[2] == 0x00 && HeadBytes[3] == 0x00;
        }


        public bool ConfirmResponseResult()
        {
            //指令码与发送指令码一致
            if (HeadBytes[HeadBytes.Length-1] == SendBytes[HeadBytes.Length-1])
            {
                return true;
            }
            return false;
        }

        public WagoCommand Decode()
        {
            WagoCommand command = new WagoCommand();
            byte commandCode = HeadBytes[HeadBytes.Length - 1];
            //DI或DO
            if (commandCode==DI_READ_CMD||commandCode==DO_READ_CMD)
            {
                byte bytLength = ContentBytes[0];
                //byte长度*8 
                bool[] datas = new bool[bytLength*8];
                byte[] bytes = new byte[bytLength];
                Array.Copy(ContentBytes,1,bytes, 0, bytes.Length);
                for (int i = 0; i < bytes.Length; i++)
                {
                    for (int j = 0; j < 8; j++)
                    {
                        if (j == 0)
                        {
                            datas[i*8 + j] = ((bytes[i] & 0x01) == 0x01);
                        }
                        else
                        {
                            datas[i*8 + j] = (((bytes[i] >> j) & 0x01) == 0x01);
                        }
                    }
                }
                command.Datas = datas;
            }
            //DI或DO
            else if (commandCode == AI_READ_CMD || commandCode == AO_READ_CMD)
            {
                byte bytLength = ContentBytes[0];
                byte[] bytes = new byte[bytLength];
                Array.Copy(ContentBytes, 1, bytes, 0, bytes.Length);
                command.Datas = bytes;
            }

            return command;
        }

        public int GetContentLengthByHeadBytes()
        {
            //第二个字节高位为0x80,设备报错
            if ((HeadBytes[HeadBytes.Length - 1] & 0x80) == 0x80)
            {
                return 1;
            }
            else
            {
                //长度减去unit identifier+modbus code
                return byteTransform.TransInt16(HeadBytes, 4)-2;
            }
        }

        public int GetHeadBytesIdentity()
        {
            return byteTransform.TransInt16(HeadBytes, 0);
        }
        /// <summary>
        /// 编码
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        public byte[] Code(WagoCommand data)
        {
            byte[] byt = null;
            //读取DI
            if (IsReadCommand(data.CommandCode))
            {
                byt = new byte[12];
                //事务处理标识
                Array.Copy(WagoFlag.Instance.GenerateDataFlagBuffer(byteTransform), 0, byt, 0, 2);
                //固定码0x0000
                byt[2] = 0x00;
                byt[3] = 0x00;
                //数据长度
                byt[4] = 0x00;
                byt[5] = 0x06;
                //通道
                byt[6] = data.Channel;
                //指令
                byt[7] = data.CommandCode;
                Array.Copy(byteTransform.GetBytes(data.Address), 0, byt, 8, 2);
                Array.Copy(byteTransform.GetBytes(data.RegisterCount), 0, byt, 10, 2);
            }
            //写单个寄存器地址
            else if (data.CommandCode == 0x05)
            {
                byt = new byte[12];
                //事务处理标识
                Array.Copy(WagoFlag.Instance.GenerateDataFlagBuffer(byteTransform), 0, byt, 0, 2);
                //固定码0x0000
                byt[2] = 0x00;
                byt[3] = 0x00;
                //数据长度
                byt[4] = 0x00;
                byt[5] = 0x06;
                //通道
                byt[6] = data.Channel;
                //指令
                byt[7] = data.CommandCode;
                Array.Copy(byteTransform.GetBytes(data.Address), 0, byt, 8, 2);
                byt[10] = (byte)data.WriteValue;
                byt[11] = 0x00;
            }
            else if (data.CommandCode == 0x06)
            {
                byt = new byte[12];
                //事务处理标识
                Array.Copy(WagoFlag.Instance.GenerateDataFlagBuffer(byteTransform), 0, byt, 0, 2);
                //固定码0x0000
                byt[2] = 0x00;
                byt[3] = 0x00;
                //数据长度
                byt[4] = 0x00;
                byt[5] = 0x06;
                //通道
                byt[6] = data.Channel;
                //指令
                byt[7] = data.CommandCode;
                Array.Copy(byteTransform.GetBytes(data.Address), 0, byt, 8, 2);
                Array.Copy((byte[])data.WriteValue, 0, byt, 10, 2);
            }
            return byt;
        }
        /// <summary>
        /// 是否为读取指令
        /// </summary>
        /// <param name="command"></param>
        /// <returns></returns>
        private bool IsReadCommand(byte command)
        {
            switch (command)
            {
                case DI_READ_CMD:
                case DO_READ_CMD:
                case AI_READ_CMD:
                case AO_READ_CMD:
                    return true;
                default:
                    return false;
            }
        }
        public void SetProtocolHeadBytesLength()
        {
        }
    }
}