using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Threading;
using System.Net;
using System.Configuration;
using System.Data.SqlClient;
using AGV_WPF_Global;
using System.Windows.Media;

namespace AGV_WPF.Services
{
    public class Client
    {
        public Client(string ip,int port)
        {
            ServerIP = ip;
            ServerPort = port;
            ComClient = this;
        }

        private string serverIP;

        public static Client ComClient;

        public string ServerIP
        {
            get { return serverIP; }
            set 
            { 
                if(serverIP != value)
                    serverIP = value; 
            }
        }

        private int serverPort;

        public int ServerPort
        {
            get { return serverPort; }
            set 
            {
                if (serverPort != value)
                {
                    serverPort = value; 
                }
                
            }
        }
        
        public TcpClient _client = null;
        public Thread receiveThread = null;
        public Thread sendThread = null;
        public static bool DisLinkFlag = false;//断开连接标志
        public static event EventHandler LinkStatusChanged;
        public static string databaseStr;
        public static bool SuccessFalg = false;
        public delegate void InvokeDelegate();

        public void Connect()
        {
            try
            {
                if (_client == null)
                    _client = new TcpClient(ServerIP, ServerPort);

                receiveThread = new Thread(ReceiveData);
                receiveThread.IsBackground = true;
                receiveThread.Start(_client);
                /*sendThread = new Thread(SendData);
                sendThread.IsBackground = true;*/
            }
            catch (System.Exception ex)
            {
                throw new Exception(ex.Message);
            }

        }

        public void ReceiveData(object o)
        {
            TcpClient client = o as TcpClient;
            if (client == null)
                return;
            int i = 0;
            byte[] buffer = new byte[1024];
            while (true)
            {
                if (client == null)
                    break;
                if (client.Client.Poll(-1, SelectMode.SelectRead))
                {
                    try
                    {
                        i = client.Client.Receive(buffer);
                        DisLinkFlag = false;
                        if (LinkStatusChanged != null)
                        {
                            LinkStatusChanged(this, null);
                        }
                    }
                    catch (System.Net.Sockets.SocketException ex)
                    {
                        SuccessFalg = false;
                        while (true)
                        {
                            try
                            {
                                if (MainWindow.mainWindow != null)
                                {
                                    //MainWindow.mainWindow.UpdateLinkStatus("重连中...", Brushes.Red);
                                }
                                _client = new TcpClient(ServerIP, ServerPort);

                                receiveThread = new Thread(ReceiveData);
                                receiveThread.Start(_client);
                                
                                break;
                            }
                            catch (System.Exception ex2)
                            {
                                if (MainWindow.mainWindow != null)
                                {
                                    //MainWindow.mainWindow.UpdateLinkStatus("重连失败", Brushes.Red);
                                }
                                Thread.Sleep(500);
                                continue;
                            }
                        }
                        Console.WriteLine("服务器关闭");
                        DisLinkFlag = true;
                        if (LinkStatusChanged != null)
                        {
                            LinkStatusChanged(this, null);
                        }
                        break;
                    }

                    if (i == 0)
                    {
                        //MessageBox.Show("服务器已关闭");
                        Console.WriteLine("服务器关闭");
                        DisLinkFlag = true;
                        if (LinkStatusChanged != null)
                        {
                            LinkStatusChanged(this, null);
                        }
                        break;
                    }
                    else if (i > 0)
                    {
                        string str = System.Text.Encoding.Default.GetString(buffer, 0, i);
                        if(str.StartsWith("#") && str.EndsWith("#"))
                        {
                            str = str.Replace("#","");
                            Console.WriteLine(str);
                            //string strCon = string.Format("Data Source={0};DataBase={1};user={2};pwd={3}", ServerIP, str, GlobalPara.DataBaseUser, GlobalPara.DataBasePwd);
                            if (!SuccessFalg)
                            {
                                try
                                {

                                    //using (SqlConnection con = new SqlConnection(strCon))
                                    {
                                        //con.Open();
                                        SuccessFalg = true;
                                        if (MainWindow.mainWindow != null)
                                        {
                                            //MainWindow.mainWindow.UpdateBackground();
                                        }
                                        Console.WriteLine("登录成功");
                                        //databaseStr = strCon;
                                        //con.Close();
                                    }
                                }
                                catch (System.Exception ex)
                                {
                                    SuccessFalg = false;
                                    throw new Exception(ex.Message);
                                }
                            }
                            
                        }
                        
                    }

                }
            }
            Console.WriteLine("退出接收线程");
        }

        public void SendData(object o)
        {
            TcpClient client = o as TcpClient;
            while (true)
            {
                if (sendThread != null)
                {
                    string str="";
                    if (!string.IsNullOrEmpty(str))
                    {
                        byte[] buffer = System.Text.Encoding.Default.GetBytes(str);
                        try
                        {
                            client.Client.Send(buffer);
                        }
                        catch (System.Exception ex)
                        {
                            Console.WriteLine(ex.Message);
                            break;
                        }
                    }
                    Thread.Sleep(500);
                }
            }
        }

        public void Close()
        {
            if (receiveThread != null)
            {
                receiveThread.Abort();
                receiveThread = null;
            }
            if (sendThread != null)
            {
                sendThread.Abort();
                sendThread = null;
            }
            if (_client != null)
            {
                _client = null;
            }
        }
    }
}