using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.IO;
using System.Linq;
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.Navigation;
using System.Windows.Shapes;
using System.Runtime.InteropServices;
using System.Globalization;
using Path = System.IO.Path;  // 明確指定使用 System.IO.Path

namespace KTVApp
{
    public class StringNullOrEmptyConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return !string.IsNullOrEmpty(value as string);
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    /// <summary>
    /// MainWindow.xaml 的互動邏輯
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        private ObservableCollection<Room> _rooms;
        private TcpServer _tcpServer;

        [DllImport("kernel32.dll")]
        static extern bool AllocConsole();

        public MainWindow()
        {
            AllocConsole(); // 分配一个控制台窗口
            Rooms = new ObservableCollection<Room>();
            LoadRoomsFromFile("room.txt");
            LoadRoomStatesFromFile("roomstates.txt"); // 加载房间的状态
            DataContext = this;

            // 启动 TCP 服务器
            _tcpServer = new TcpServer(1000);
            _tcpServer.MessageReceived += OnMessageReceived; // 订阅事件
            _tcpServer.Start();
        }

        public ObservableCollection<Room> Rooms
        {
            get => _rooms;
            set
            {
                _rooms = value;
                OnPropertyChanged();
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        protected void OnPropertyChanged([CallerMemberName] string name = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
        }
        /// <summary>
        /// 當使用者點擊 Rectangle 物件時會觸發此事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Rectangle_MouseDown(object sender, MouseButtonEventArgs e)
        {
            // 將 sender 轉換為 Rectangle 類型
            var rect = sender as Rectangle;

            // 透過 DataContext 獲取關聯的 Room 物件
            var room = rect.DataContext as Room;

            // 根據傳入的房間資料創建新的 RoomDetailsWindow 實例
            // 並且傳遞房間資訊 (room) 以及 TCP 服務器 (_tcpServer) 給該視窗
            var roomDetailsWindow = new RoomDetailsWindow(room, _tcpServer);

            // 顯示新創建的 RoomDetailsWindow
            roomDetailsWindow.Show();
        }

        private void LoadRoomsFromFile(string filePath)
        {
            if (!File.Exists(filePath))
            {
                MessageBox.Show($"File not found: {filePath}");
                return;
            }

            try
            {
                var lines = File.ReadAllLines(filePath);
                foreach (var line in lines)
                {
                    var parts = line.Split(';');
                    if (parts.Length == 2)
                    {
                        var floor = parts[0];
                        var roomNumbers = parts[1].Split(',');

                        foreach (var roomNumber in roomNumbers)
                        {
                            // 获取roomNumber的末三码
                            var lastThreeDigits = roomNumber.Length > 3 ? roomNumber.Substring(roomNumber.Length - 3) : roomNumber;
                            var newRoomNumber = "0" + lastThreeDigits;

                            Rooms.Add(new Room
                            {
                                RoomNumber = newRoomNumber,
                                RoomPC = roomNumber,
                                Status = "可用", // 默认状态，可以根据需要修改
                                TimeRange = "Not Set", // 默认时间范围，可以根据需要修改
                                ServiceStatus = "NonService" // 默认服务状态
                            });
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error reading file: {ex.Message}");
            }
        }

        private void LoadRoomStatesFromFile(string filePath)
        {
            if (!File.Exists(filePath))
            {
                MessageBox.Show($"File not found: {filePath}");
                return;
            }

            try
            {
                var lines = File.ReadAllLines(filePath);
                foreach (var line in lines)
                {
                    var parts = line.Split(';');
                    if (parts.Length == 5)
                    {
                        var roomPC = parts[0];
                        var roomNumber = parts[1];
                        var status = parts[2];
                        var timeRange = parts[3];
                        var serviceStatus = parts[4];

                        var room = Rooms.FirstOrDefault(r => r.RoomPC == roomPC);
                        if (room != null)
                        {
                            room.RoomNumber = roomNumber;
                            room.Status = status;
                            room.TimeRange = timeRange;
                            room.ServiceStatus = serviceStatus;
                        }
                        else
                        {
                            // Room does not exist, so add a new one
                            Rooms.Add(new Room
                            {
                                RoomPC = roomPC,
                                RoomNumber = roomNumber,
                                Status = status,
                                TimeRange = timeRange,
                                ServiceStatus = serviceStatus
                            });
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error reading file: {ex.Message}");
            }
        }


        private void OnMessageReceived(string message)
        {
            Console.WriteLine($"收到消息: {message}");
            var parts = message.Split(',');
            
            if (parts.Length >= 2)
            {
                var roomNumber = parts[0].PadLeft(4, '0');
                var command = parts[1];
                
                Application.Current.Dispatcher.Invoke(() =>
                {
                    try 
                    {
                        var room = Rooms.FirstOrDefault(r => r.RoomNumber == roomNumber);
                        if (room != null)
                        {
                            if (command == "O" && parts.Length >= 4)
                            {
                                room.Status = "已占用";
                                room.TimeRange = parts[3];
                                Console.WriteLine($"房間 {roomNumber} 開機，時間: {parts[3]}");
                                SaveRoomsToFile("roomstates.txt");

                                var roomDetailsWindow = new RoomDetailsWindow(room, _tcpServer);
                                roomDetailsWindow.Start_Click(null, null);
                            }
                            else if (command == "O")
                            {
                                room.Status = "已占用";
                                room.TimeRange = "Not Set";
                                Console.WriteLine($"房間 {roomNumber} 開機");
                                SaveRoomsToFile("roomstates.txt");

                                var roomDetailsWindow = new RoomDetailsWindow(room, _tcpServer);
                                roomDetailsWindow.Start_Click(null, null);
                            }
                            else if (command == "P")
                            {
                                room.Status = "可用";
                                room.TimeRange = "Not Set";
                                Console.WriteLine($"房間 {roomNumber} 關機");
                                SaveRoomsToFile("roomstates.txt");
                                
                                var roomDetailsWindow = new RoomDetailsWindow(room, _tcpServer);
                                roomDetailsWindow.Shutdown_Click(null, null);
                            }
                        }
                        else
                        {
                            Console.WriteLine($"找不到房間: {roomNumber}");
                        }
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine($"錯誤: {ex.Message}");
                    }
                });
            }
        }

        public void SaveRoomsToFile(string filePath)
        {
            try
            {
                string fullPath = Path.GetFullPath(filePath);
                var lines = Rooms.Select(r => $"{r.RoomPC};{r.RoomNumber};{r.Status};{r.TimeRange};{r.ServiceStatus}").ToList();
                File.WriteAllLines(fullPath, lines);
                Console.WriteLine("已保存房間狀態");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"保存失敗: {ex.Message}");
                MessageBox.Show($"Error saving file: {ex.Message}");
            }
        }

        protected override void OnClosing(CancelEventArgs e)
        {
            base.OnClosing(e);
            SaveRoomsToFile("roomstates.txt"); // 使用新的文件名
        }
    }

    public class Room : INotifyPropertyChanged
    {
        private string _status;
        private string _serviceStatus;
        private string _timeRange;

        private string _roomNumber;
        public string RoomPC { get; set; }

        public string RoomNumber
        {
            get => _roomNumber;
            set
            {
                if (_roomNumber != value)
                {
                    _roomNumber = value;
                    OnPropertyChanged();
                }
            }
        }

        public string Status
        {
            get => _status;
            set
            {
                if (_status != value)
                {
                    _status = value;
                    OnPropertyChanged();
                }
            }
        }

        public string TimeRange
        {
            get => _timeRange;
            set
            {
                if (_timeRange != value)
                {
                    _timeRange = value;
                    OnPropertyChanged();
                }
            }
        }

        public string ServiceStatus
        {
            get => _serviceStatus;
            set
            {
                if (_serviceStatus != value)
                {
                    _serviceStatus = value;
                    OnPropertyChanged();
                }
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        protected void OnPropertyChanged([CallerMemberName] string name = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
        }
    }
}