import 'package:flutter/material.dart';
import 'package:qhd_prevention/pages/badge_manager.dart';
import 'package:qhd_prevention/tools/auth_service.dart';
import 'package:shared_preferences/shared_preferences.dart';
import './pages/login_page.dart';
import './pages/main_tab.dart';
import 'package:intl/date_symbol_data_local.dart';
import 'http/HttpManager.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';

// 全局导航键
final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();

// 全局消息控制器
class GlobalMessage {
  static void showError(String message) {
    final context = navigatorKey.currentContext;
    if (context != null) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text(message),
          backgroundColor: Colors.red,
          duration: const Duration(seconds: 3),
        ),
      );
    }
  }
}

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  // 初始化 EasyLoading
  EasyLoading.instance
    ..displayDuration = const Duration(seconds: 20)
    ..indicatorType = EasyLoadingIndicatorType.ring
    ..loadingStyle = EasyLoadingStyle.custom
    ..indicatorSize = 36.0
    ..radius = 0
    ..progressColor = Colors.blue
    ..backgroundColor = Colors.grey.shade300
    ..indicatorColor = Colors.blue
    ..textColor = Colors.black
    ..userInteractions = false
    ..dismissOnTap = false;

  await initializeDateFormatting('zh_CN', null);

  // 初始化HTTP管理器未授权回调
  HttpManager.onUnauthorized = () async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.setBool('isLoggedIn', false);
    await prefs.remove('token');
    navigatorKey.currentState?.pushNamedAndRemoveUntil(
      '/login',
          (route) => false,
    );

    Future.delayed(const Duration(milliseconds: 100), () {
      GlobalMessage.showError('会话已过期，请重新登录');
    });
  };

  // 自动登录逻辑
  final prefs = await SharedPreferences.getInstance();
  final savedLogin = prefs.getBool('isLoggedIn') ?? false;
  bool isLoggedIn = false;

  if (savedLogin) {
    // 如果本地标记已登录，进一步验证 token 是否有效
    try {
      isLoggedIn = await AuthService.isLoggedIn();
      // 这里建议 AuthService.isLoggedIn() 内部实际请求一次用户信息接口
      // 如果失败，就返回 false
    } catch (e) {
      isLoggedIn = false;
    }
  }

  runApp(MyApp(isLoggedIn: isLoggedIn));
}

class MyApp extends StatelessWidget {
  final bool isLoggedIn;

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: '',
      navigatorKey: navigatorKey,
      builder: (context, child) {
        return EasyLoading.init(
          builder: (context, widget) {
            return GestureDetector(
              behavior: HitTestBehavior.translucent,
              onTap: () {
                FocusScope.of(context).unfocus();
              },
              child: widget,
            );
          },
        )(context, child);
      },
      theme: ThemeData(
        dividerTheme: const DividerThemeData(
          color: Colors.black12,
          thickness: .5,
          indent: 0,
          endIndent: 0,
        ),
        primarySwatch: Colors.blue,
        scaffoldBackgroundColor: const Color(0xFFF1F1F1),
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        inputDecorationTheme: const InputDecorationTheme(
          border: InputBorder.none,
          contentPadding: EdgeInsets.symmetric(horizontal: 8),
        ),
        snackBarTheme: const SnackBarThemeData(
          behavior: SnackBarBehavior.floating,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.all(Radius.circular(8)),
          ),
        ),
        progressIndicatorTheme: const ProgressIndicatorThemeData(
          color: Colors.blue,
        ),
      ),
      home: isLoggedIn ? const MainPage() : const LoginPage(),
      debugShowCheckedModeBanner: false,
      routes: {
        '/login': (_) => const LoginPage(),
      },
    );
  }
}