import 'dart:io';
import 'dart:ui';
import 'package:flutter/foundation.dart';
import 'package:system_tray/system_tray.dart';
import 'package:window_manager/window_manager.dart';

/// 系统托盘服务
class TrayService {
  static final TrayService _instance = TrayService._internal();
  factory TrayService() => _instance;
  TrayService._internal();

  final SystemTray _systemTray = SystemTray();
  bool _isInitialized = false;

  // 回调函数
  VoidCallback? onShow;
  VoidCallback? onHide;
  VoidCallback? onExit;
  VoidCallback? onRefresh;

  /// 是否支持系统托盘（仅桌面平台）
  bool get isSupported => !kIsWeb && (Platform.isWindows || Platform.isLinux || Platform.isMacOS);

  /// 初始化系统托盘
  Future<void> init({
    VoidCallback? onShow,
    VoidCallback? onHide,
    VoidCallback? onExit,
    VoidCallback? onRefresh,
  }) async {
    if (!isSupported || _isInitialized) return;

    this.onShow = onShow;
    this.onHide = onHide;
    this.onExit = onExit;
    this.onRefresh = onRefresh;

    try {
      // 初始化托盘图标
      String iconPath = Platform.isWindows
          ? 'assets/app_icon.ico'
          : 'assets/app_icon.png';

      await _systemTray.initSystemTray(
        title: '家庭网络监控',
        iconPath: iconPath,
        toolTip: '家庭网络监控 - 运行中',
      );

      // 创建右键菜单
      final menu = Menu();
      await menu.buildFrom([
        MenuItemLabel(
          label: '显示窗口',
          onClicked: (menuItem) => _handleShow(),
        ),
        MenuItemLabel(
          label: '隐藏窗口',
          onClicked: (menuItem) => _handleHide(),
        ),
        MenuSeparator(),
        MenuItemLabel(
          label: '刷新状态',
          onClicked: (menuItem) => _handleRefresh(),
        ),
        MenuSeparator(),
        MenuItemLabel(
          label: '退出程序',
          onClicked: (menuItem) => _handleExit(),
        ),
      ]);

      await _systemTray.setContextMenu(menu);

      // 注册托盘事件
      _systemTray.registerSystemTrayEventHandler((eventName) {
        if (eventName == kSystemTrayEventClick) {
          // 单击托盘图标显示窗口
          _handleShow();
        } else if (eventName == kSystemTrayEventRightClick) {
          // 右键显示菜单
          _systemTray.popUpContextMenu();
        }
      });

      _isInitialized = true;
    } catch (e) {
      debugPrint('系统托盘初始化失败: $e');
    }
  }

  /// 更新托盘提示文字
  Future<void> updateToolTip(String message) async {
    if (!_isInitialized) return;
    await _systemTray.setToolTip('家庭网络监控 - $message');
  }

  /// 更新托盘标题
  Future<void> updateTitle(String title) async {
    if (!_isInitialized) return;
    await _systemTray.setTitle(title);
  }

  void _handleShow() {
    onShow?.call();
  }

  void _handleHide() {
    onHide?.call();
  }

  void _handleExit() {
    onExit?.call();
  }

  void _handleRefresh() {
    onRefresh?.call();
  }

  /// 销毁托盘
  Future<void> destroy() async {
    if (!_isInitialized) return;
    await _systemTray.destroy();
    _isInitialized = false;
  }
}

/// 窗口管理服务
class WindowService with WindowListener {
  static final WindowService _instance = WindowService._internal();
  factory WindowService() => _instance;
  WindowService._internal();

  bool _isInitialized = false;
  VoidCallback? onCloseRequested;

  /// 是否支持窗口管理
  bool get isSupported => !kIsWeb && (Platform.isWindows || Platform.isLinux || Platform.isMacOS);

  /// 初始化窗口管理
  Future<void> init({VoidCallback? onCloseRequested}) async {
    if (!isSupported || _isInitialized) return;

    this.onCloseRequested = onCloseRequested;

    await windowManager.ensureInitialized();

    // 配置窗口选项
    const windowOptions = WindowOptions(
      size: Size(420, 700),
      minimumSize: Size(350, 500),
      center: true,
      backgroundColor: Color(0x00000000),
      skipTaskbar: false,
      titleBarStyle: TitleBarStyle.normal,
      title: '家庭网络监控',
    );

    await windowManager.waitUntilReadyToShow(windowOptions, () async {
      await windowManager.show();
      await windowManager.focus();
    });

    // 添加窗口监听器
    windowManager.addListener(this);
    
    // 阻止默认关闭行为
    await windowManager.setPreventClose(true);

    _isInitialized = true;
  }

  /// 显示窗口
  Future<void> showWindow() async {
    if (!isSupported) return;
    await windowManager.show();
    await windowManager.focus();
  }

  /// 隐藏窗口（最小化到托盘）
  Future<void> hideWindow() async {
    if (!isSupported) return;
    await windowManager.hide();
  }

  /// 最小化窗口
  Future<void> minimizeWindow() async {
    if (!isSupported) return;
    await windowManager.minimize();
  }

  /// 关闭窗口
  Future<void> closeWindow() async {
    if (!isSupported) return;
    await windowManager.destroy();
  }

  /// 设置窗口始终置顶
  Future<void> setAlwaysOnTop(bool isAlwaysOnTop) async {
    if (!isSupported) return;
    await windowManager.setAlwaysOnTop(isAlwaysOnTop);
  }

  /// 窗口关闭事件
  @override
  void onWindowClose() {
    onCloseRequested?.call();
  }

  /// 销毁
  void dispose() {
    if (_isInitialized) {
      windowManager.removeListener(this);
    }
  }
}