import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'utils/app_theme.dart';
import 'utils/app_initializer.dart';
import 'utils/screen_adapter.dart';
import 'routes/app_routes.dart';
import 'constants/app_constants.dart';
import 'config/app_config.dart';
import 'controllers/shared_preferences_storage_controller.dart';
import 'services/get/theme_controller.dart';
import 'views/profile/guide/sp-guide.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  debugPrint('[启动] 开始初始化...');

  try {
    await SharedPreferencesStorageController.init();
    debugPrint('[启动] SharedPreferencesStorageController 初始化完成');

    // 初始化 AppConfig，动态获取版本号
    try {
      await AppConfig.init();
      debugPrint('[启动] AppConfig 初始化完成');
    } catch (e) {
      debugPrint('[启动] AppConfig 初始化异常: $e');
    }

    // 初始化 ThemeController（在 AppInitializer 之前，确保主题最先加载）
    Get.put(ThemeController(), permanent: true);
    debugPrint('[启动] ThemeController 初始化完成');

    // 检查是否需要显示引导页
    String initialRoute = await _getInitialRoute();
    debugPrint('[启动] 初始路由: $initialRoute');

    runApp(MyApp(initialRoute: initialRoute));
    debugPrint('[启动] 应用启动完成');
  } catch (e) {
    debugPrint('[启动] 异常: $e');
    runApp(MyApp(initialRoute: '/'));
  }
}

Future<String> _getInitialRoute() async {
  final prefs = await SharedPreferences.getInstance();
  bool agreementAccepted =
      prefs.getBool(AppConfig.keyAgreementAccepted) ?? false;

  // 如果协议未被接受，显示引导页
  if (!agreementAccepted) {
    return '/sp-guide';
  }

  // 否则使用 AppInitializer 返回的初始路由
  try {
    final result = await AppInitializer.initialize();
    return result.initialRoute;
  } catch (e) {
    debugPrint('[启动] AppInitializer.initialize 异常: $e');
    return '/';
  }
}

class MyApp extends StatefulWidget {
  final String initialRoute;

  const MyApp({super.key, required this.initialRoute});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> with WidgetsBindingObserver {
  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
  }

  @override
  void dispose() {
    WidgetsBinding.instance.removeObserver(this);
    super.dispose();
  }

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    // 在第一帧绘制后再执行屏幕适配
    WidgetsBinding.instance.addPostFrameCallback((_) {
      debugPrint('[启动] 执行屏幕适配...');
      _setupScreenAdapter();
    });
  }

  void _setupScreenAdapter() {
    try {
      // 延迟调用屏幕适配，避免在启动时阻塞
      Future.delayed(const Duration(milliseconds: 100), () {
        if (mounted) {
          ScreenAdapter.setPreferredOrientations();
          ScreenAdapter.enableSystemUIOverlay();
          ScreenAdapter.setSystemUIOverlayStyle(
            statusBarColor: Colors.transparent,
          );
          debugPrint('[启动] 屏幕适配完成');
        }
      });
    } catch (e) {
      debugPrint('[启动] 屏幕适配异常: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    // 使用 Obx 监听主题变化
    return Obx(() {
      final themeController = Get.find<ThemeController>();
      return GetMaterialApp(
        title: AppConstants.appName,
        debugShowCheckedModeBanner: false,
        theme: AppTheme.lightTheme,
        darkTheme: AppTheme.darkTheme,
        themeMode: themeController.currentThemeMode,
        initialRoute: widget.initialRoute,
        onGenerateRoute: AppRoutes.generateRoute,
        routes: {'/sp-guide': (context) => const SpGuidePage()},
      );
    });
  }
}