using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Threading.Tasks;
using HDL_ON.Entity;
using Newtonsoft.Json;

namespace HDL_ON.DriverLayer
{
    public class Control_TcpClient
    {

        //声明IP，端口，和一个用来连接的Socket
        public string _ip;

        private TcpClient _tcpClient;

        //创建一个委托，用来满足其他类调用
        //public delegate void DelegateMessage(string str);
        public Action<string> ReceiveEvent;

        /// <summary>
        /// 连接次数
        /// </summary>
        private int reconnectIndex = 0;
        /// <summary>
        /// 是否连接成功
        /// </summary>
        public bool isConnected = false;


        /// <summary>
        /// 构造函数
        /// </summary>
        public Control_TcpClient(string serverIp)
        {
            _ip = serverIp;
        }

        //TCP连接
        private bool ConnectToTcp( )
        {
            if (string.IsNullOrEmpty(_ip) )
            {
                return false;
            }
            if (_tcpClient == null)
            {
                _tcpClient = new TcpClient();
            }
            try
            {
                _tcpClient.Connect(IPAddress.Parse(_ip), 8586);
                Task.Run(new Action(ReceiveMessage));//开启线程，不停接收消息
                MainPage.Log($"打开tcp client{_ip}:8586");
                isConnected = true;
            }
            catch (Exception e)
            {
                MainPage.Log(e.Message);
                throw;
            }
            return true;//返回连接状态
        }
        /// <summary>
        /// 连接tcp线程
        /// </summary>
        private Thread connectThread;

        /// <summary>
        /// 连接线程
        /// </summary>
        public void Connect()
        {
            if(connectThread == null)
            {
                connectThread = new Thread(() => {
                    while (Control.Ins.GatewayOnline_Local)
                    {
                        if (_tcpClient == null)
                        {
                            ConnectToTcp();
                        }
                        else
                        {
                            if (!_tcpClient.Connected)
                            {
                                try
                                {
                                    //_tcpClient.ReceiveTimeout = 
                                    _tcpClient.Connect(IPAddress.Parse(_ip), 8586);
                                    Task.Run(new Action(ReceiveMessage));//开启线程，不停接收消息
                                }
                                catch (Exception ex)
                                {
                                    MainPage.Log($"tcp重连异常:{ex.Message}");
                                    _tcpClient.Close();
                                    _tcpClient = null;
                                }
                            }
                        }
                        Thread.Sleep(1000);


                    }
                });
                connectThread.Start();
            }
        }


        /// <summary>
        /// 关闭连接
        /// </summary>
        /// <returns></returns>
        public bool Close()
        {
            if (_tcpClient == null)
                return true;
            _tcpClient.Close();
            _tcpClient = null;
            return true;
        }

        /// <summary>
        /// 发送消息
        /// </summary>
        /// <param name="bytes">需要发送的字节</param>
        public void SendMessage(byte[] bytes)
        {
            if (_tcpClient.GetStream().CanWrite)
            {
                _tcpClient.GetStream().Write(bytes, 0, bytes.Length);
            }
        }
        /// <summary>
        /// 心跳包线程
        /// </summary>
        private Thread heartBeatThread;
        private DateTime heartBeatTime;
        public void HeartBeat()
        {
            if(heartBeatThread == null)
            {
                heartBeatThread = new Thread(() => {
                    if(_tcpClient.Connected&&10 *1000 <(System.DateTime.Now - heartBeatTime).TotalMilliseconds)
                    {
                        var sendBytes = Control.Ins.ConvertSendBodyData(CommunicationTopic.ct.HeartBeat, "");
                        SendMessage(sendBytes);
                    }
                    Thread.Sleep(100);
                });
                heartBeatThread.Start();
            }
        }
        /// <summary>
        /// 接收数据线程
        /// </summary>
        private Thread receiveThread;

        //接收消息
        public void ReceiveMessage()
        {
            if(receiveThread == null)
            {
                receiveThread = new Thread(() => {
                    while (true)
                    {
                        if(_tcpClient == null)
                        {
                            receiveThread.Abort();
                            receiveThread = null;
                            return;
                        }
                        if (!_tcpClient.Connected)
                        {
                            MainPage.Log("tcp客户端断开了连接...");
                            receiveThread.Abort();
                            receiveThread = null;
                            isConnected = false;
                            return;
                        }

                        // 定义一个2M的缓存区；
                        byte[] arrMsgRec = new byte[1024 * 1024 * 2];
                        int size = _tcpClient.GetStream().Read(arrMsgRec, 0, arrMsgRec.Length);
                        var tcpDataString = System.Text.Encoding.UTF8.GetString(arrMsgRec, 0, arrMsgRec.Length);


                        if (!string.IsNullOrEmpty(tcpDataString))
                        {
                            MainPage.Log($"局域网tcp数据接收");
                            Control.Ins.ConvertReceiveData(arrMsgRec, null);

                        }
                    }

                });
                //receiveThread.IsBackground = true;
                receiveThread.Start();
            }
        }


    }
}