using Modbus.Device;
using S7.Net;
using SamplePre.Common;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace SamplePre.Communication.Communication
{

    public class ModbusTcpCommunicator : ICommunication, IDisposable
    {
        IModbusMaster _modbusMaster = null;
        TcpClient _tcpClient = null;
        private readonly string _ipAddress;
        private readonly int _port;


        /// <summary>
        /// 是否连接
        /// </summary>
        private bool _isConnected = false;

        /// <summary>
        /// 是否连接
        /// </summary>
        public bool IsConnected
        {
            get => _isConnected;
            set
            {
                if (_isConnected != value)
                {
                    _isConnected = value;
                    ConnectionStatusChanged?.Invoke(value);
                }
            }
        }

        /// <summary>
        /// 连接状态变化事件
        /// </summary>
        public event Action<bool> ConnectionStatusChanged;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="ipAddress">IP地址</param>
        /// <param name="port">端口号</param>
        public ModbusTcpCommunicator(string ipAddress, int port=502)
        {

            try
            {
                _ipAddress = ipAddress;
                _port = port;

                _tcpClient = new TcpClient(ipAddress, port);//Modbus主设备

                _modbusMaster = ModbusIpMaster.CreateIp(_tcpClient);
                _modbusMaster.Transport.ReadTimeout = 2000;
                _modbusMaster.Transport.Retries = 3;

                IsConnected = true;
            }
            catch (Exception ex)
            {
                LoggerHelper.Logger.Error("初始化ModbusTcpCommunicator失败！" + ex.Message);
              
            }
           
        }

        /// <summary>
        /// 连接PLC
        /// </summary>
        /// <returns>是否连接成功</returns>
        public bool Connect()
        {
            try
            {
                if (IsConnected)
                {
                    LoggerHelper.Logger.Info("已经处于连接状态!");
                    return true;
                }

                // 如果之前的连接对象已释放，创建新的
                if (_modbusMaster == null)
                {
                    _tcpClient = new TcpClient(_ipAddress, _port);//Modbus主设备

                    _modbusMaster = ModbusIpMaster.CreateIp(_tcpClient);
                    _modbusMaster.Transport.ReadTimeout = 2000; //
                    _modbusMaster.Transport.Retries = 3;

                    
                }

              
               
                LoggerHelper.Logger.Info("PLC连接成功");
                IsConnected = true;

                return IsConnected;
            }
            catch (Exception ex)
            {

                LoggerHelper.Logger.Info($"连接PLC失败: {ex.Message}");
                IsConnected = false;

                return false;
            }
        }

        /// <summary>
        /// 断开连接
        /// </summary>
        public void Disconnect()
        {
            try
            {
                if (IsConnected)
                {
                   
                    _modbusMaster.Dispose();
                    _tcpClient.Close();
                   
                    IsConnected = false;
                    LoggerHelper.Logger.Info("PLC连接已断开");

                }
            }
            catch (Exception ex)
            {
                LoggerHelper.Logger.Info($"断开PLC连接失败: {ex.Message}");
            }
        }



        /// <summary>
        /// 写入数组数据
        /// </summary>
        /// <param name="Dbno"></param>
        /// <param name="start"></param>
        /// <param name="bytes"></param>
        /// <returns></returns>
        public bool WriteArraysBtye<T>(int Dbno, int start, T[] data)
        {


            try
            {
                if (!IsConnected && !Connect())
                {
                    return false;
                }

                ushort[] ushorts = data.Cast<ushort>().ToArray();

                _modbusMaster.WriteMultipleRegisters((byte)Dbno, (ushort)start, ushorts);
               

                return true;
            }
            catch (Exception ex)
            {
                LoggerHelper.Logger.Info($"写入数组失败: {ex.Message}");
                return false;
            }




        }


        /// <summary>
        /// 读取数组
        /// </summary>
        /// <returns></returns>
        public ushort[] ReadArraysShort(int Dbno, int start, int lenth)
        {

            //try
            //{
            //    if (!IsConnected && !Connect())
            //    {
            //        return null;
            //    }

            //    //public object? Read(DataType dataType, int db, int startByteAdr, VarType varType, int varCount, byte bitAdr = 0)
            //    ushort[] datas = _plc.Read(DataType.DataBlock, Dbno, start, VarType.Word, lenth) as ushort[];
            //    return datas;
            //}
            //catch (Exception ex)
            //{

            //    LoggerHelper.Logger.Info($"读取数组失败: {ex.Message}");
            //    return null;
            //}

            return null;


        }


        /// <summary>
        /// 释放资源
        /// </summary>
        public void Dispose()
        {
            // 释放托管资源
            Disconnect();
           
        }

        public bool WriteSingleData(string address, object value)
        {
            throw new NotImplementedException();
        }

        ~ModbusTcpCommunicator()
        {
            Dispose();
        }

    }

}