using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
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.Shapes;
using System.IO;

namespace Karaoke_Kingpin
{
    /// <summary>
    /// RoomDetailsWindow.xaml 的互動邏輯
    /// </summary>
    public partial class RoomDetailsWindow : Window
    {
        private readonly Room _room;

        private readonly TcpServer _tcpServer;

        public RoomDetailsWindow(Room room, TcpServer tcpServer)
        {
            InitializeComponent();
            _room = room;
            _tcpServer = tcpServer;
            DataContext = _room;
            CenterWindowOnMainWindow();

            // 訂閱 TCP 服務器的命令接收事件
            _tcpServer.CommandReceived += HandleCommand;
        }


        private void CenterWindowOnMainWindow()
        {
            if (Application.Current.MainWindow != null)
            {
                this.Owner = Application.Current.MainWindow;
                this.WindowStartupLocation = WindowStartupLocation.CenterOwner;
            }
        }

        public async void Start_Click(object sender, RoutedEventArgs e)
        {
            Console.WriteLine($"=== 開始執行開機操作 ===");
            string roomNumber = _room.RoomNumber.Substring(1);
            Console.WriteLine($"房間號碼: {roomNumber}");
            
            // 保存原始的時間範圍
            string originalTimeRange = _room.TimeRange;
            
            await SendTcpSignal(roomNumber, "O");
            
            // 發送完成後，更新房間狀態
            _room.Status = "已占用";
            _room.TimeRange = originalTimeRange;
            
            // 保存狀態到文件
            if (Application.Current.MainWindow is MainWindow mainWindow)
            {
                mainWindow.SaveRoomsToFile("roomstates.txt");
            }
            
            Console.WriteLine($"傳送開機信號 -> 房號: {roomNumber}, 指令: O");
            Console.WriteLine($"時間範圍: {_room.TimeRange}");
            Console.WriteLine("=== 開機操作完成 ===\n");
        }

        public async void Shutdown_Click(object sender, RoutedEventArgs e)
        {
            Console.WriteLine($"=== 開始執行關機操作 ===");
            string roomNumber = _room.RoomNumber.Substring(1);
            Console.WriteLine($"房間號碼: {roomNumber}");
            
            await SendTcpSignal(roomNumber, "X");

            // 手動關機時更新狀態
            _room.Status = "可用";
            _room.TimeRange = "Not Set";
            
            // 保存狀態到文件
            if (Application.Current.MainWindow is MainWindow mainWindow)
            {
                mainWindow.SaveRoomsToFile("roomstates.txt");
            }
            
            Console.WriteLine($"傳送關機信號 -> 房號: {roomNumber}, 指令: X");
            Console.WriteLine("=== 關機操作完成 ===\n");
        }

        // 添加新的方法來處理 TCP 命令
        private async void HandleCommand(string roomNumber, string command)
        {
            await Dispatcher.InvokeAsync(async () =>
            {
                if (roomNumber == _room.RoomNumber.Substring(1))
                {
                    switch (command)
                    {
                        case "O":
                            await SendTcpSignal(roomNumber, "O");
                            break;
                        case "X":
                            await SendTcpSignal(roomNumber, "X");
                            break;
                    }
                }
            });
        }

            // 在窗口關閉時取消訂閱事件
        protected override void OnClosed(EventArgs e)
        {
            base.OnClosed(e);
            if (_tcpServer != null)
            {
                _tcpServer.CommandReceived -= HandleCommand;
            }
        }

        private void Cancel_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("取消");
        }

        private void OpenAccount_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("包廂開帳");
        }

        private void CloseAccount_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("包廂關帳");
        }

        private async Task SendTcpSignal(string roomNumber, string command)
        {
            int retryInterval = 10000; // 10秒
            int maxDuration = 20 * 60 * 1000; // 20分鐘
            int elapsedTime = 0;
            bool success = false;

            while (elapsedTime < maxDuration && !success)
            {
                try
                {
                    string message = $"{roomNumber},{command}";
                    LogToFile($"嘗試發送: {message}");
                    
                    using (TcpClient client = new TcpClient(_room.RoomPC, 1000))
                    {
                        NetworkStream stream = client.GetStream();
                        byte[] data = Encoding.ASCII.GetBytes(message);
                        await stream.WriteAsync(data, 0, data.Length);
                        Console.WriteLine($"房間 {roomNumber} 發送指令: {command}");
                        success = true;
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"發送失敗，10秒後重試");
                    if (!success)
                    {
                        await Task.Delay(retryInterval);
                        elapsedTime += retryInterval;
                    }
                }
            }

            if (!success)
            {
                Console.WriteLine($"房間 {roomNumber} 發送指令失敗: 超過20分鐘重試時間");
            }
        }

        private void LogToFile(string logMessage)
        {
            string logFilePath = "log.txt"; // 你可以根據需要更改文件路徑
            try
            {
                using (StreamWriter writer = new StreamWriter(logFilePath, true))
                {
                    writer.WriteLine($"{DateTime.Now}: {logMessage}");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"寫入日誌失敗: {ex.Message}");
            }
        }
    }
}