using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Net.Sockets;
using System.Net;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Threading;
using System.IO;
using System.Data.SqlClient;
using MySql.Data.MySqlClient;

namespace SocketExample
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        IPAddress ip;
        int port;
        string path;
        public MainWindow()
        {
            path = "C:\\Users\\Administrator\\source\\repos\\SocketExample\\SocketExample\\bin\\Debug\\config.txt";
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            ip = IPAddress.Parse(IPtextbox.Text);
            port = int.Parse(Porttextbox.Text);

            // 创建TCPListener
            TcpListener server = new TcpListener(ip, port);

            // 开始监听
            
            server.Start();
            InfoTextBlock.Text += "正在监听...\n";

            Thread thread = new Thread(Listen);
            thread.IsBackground = true;
            thread.Start(server);
        }
        TcpClient client;
        void Listen(object o)
        {
            TcpListener socketWatch = o as TcpListener;
            while (true)
            {
                // 接受客户端连接，进程会一直在这等待，直到客户端链接才会继续下一步。
                client = socketWatch.AcceptTcpClient();
                Dispatcher.Invoke(() => {
                    InfoTextBlock.Text += "客户端已连接!\n";
                });

                Thread thread = new Thread(Recive);
                thread.IsBackground = true;
                thread.Start(client);

            }
        }

        void Recive(Object o)
        {
            TcpClient tcpClient = o as TcpClient;
            NetworkStream stream = tcpClient.GetStream();

            while (true)
            {
                // 处理客户端请求
                try
                {
                    // 读取客户端消息
                    byte[] buffer = new byte[1024];
                    int bytesRead = stream.Read(buffer, 0, buffer.Length);
                    if (bytesRead == 0) {
                        Dispatcher.Invoke(() =>
                        {
                            InfoTextBlock.Text += $"客户端已断开连接\n";
                        });
                        break;
                    }
                    string request = Encoding.UTF8.GetString(buffer, 0, bytesRead);
                    Dispatcher.Invoke(() =>
                    {
                        InfoTextBlock.Text += $"接收到客户端消息: {request}\n";
                    });

                    // 发送响应
                    string response = $"服务器已收到你的消息: {request}";
                    byte[] responseBytes = Encoding.UTF8.GetBytes(response);
                    stream.Write(responseBytes, 0, responseBytes.Length);
                    Dispatcher.Invoke(() =>
                    {
                        InfoTextBlock.Text += "已发送响应给客户端\n";
                    });
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"处理请求时出错: {ex.Message}");
                }
            }
            // 关闭连接
            stream.Close();
            client.Close();
        }

        private void Button_Click_Clear(object sender, RoutedEventArgs e)
        {
            this.InfoTextBlock.Text = string.Empty;
        }

        private void Button_Click_Create(object sender, RoutedEventArgs e)
        {
            ClientWindow clientWindow = new ClientWindow();
            clientWindow.Show();
        }

        private void Button_Click_ReadFile(object sender, RoutedEventArgs e)
        {
            try
            {
                string[] ipconfig = File.ReadAllLines(path);
                string[] ip = ipconfig[0].Split(':');
                string[] port = ipconfig[1].Split(':');
                InfoTextBlock.Text += ip[1];
                InfoTextBlock.Text += port[1];
                IPtextbox.Text = ip[1];
                Porttextbox.Text = port[1];
            }
            catch(Exception ex) 
            {
                    InfoTextBlock.Text += ex.Message;
            }
        }

        private void Button_Click_ReadSql(object sender, RoutedEventArgs e)
        {
            MySqlConnection conn = new MySqlConnection("server=127.0.0.1;port=3306;database=Test;user=root;password=root;");
            MySqlCommand comn = new MySqlCommand("select * from Product",conn);
            if (conn.State == System.Data.ConnectionState.Closed) { 
                conn.Open();
            }
            MySqlDataReader reader = comn.ExecuteReader();
            try
            {
                if (reader.HasRows) {
                    while (reader.Read()) {
                        InfoTextBlock.Text += "" + reader["ID"] + reader["Name"] + "\n";
                    }
                }
            }
            catch (Exception ex) {
                InfoTextBlock.Text += ex.Message;
            }
            finally
            {
                conn.Close();
            }
        }
    }
}