import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:get/get.dart';

import 'app/bindings/initial_binding.dart';
import 'app/localization/app_language_service.dart';
import 'app/localization/app_notice.dart';
import 'app/localization/app_strings.dart';
import 'app/routes/app_pages.dart';
import 'app/routes/app_routes.dart';
import 'app/theme/app_theme.dart';
import 'core/network/auth_session_store.dart';
import 'core/storage/local_storage_service.dart';
import 'core/storage/scoring_storage_keys.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  SystemChrome.setSystemUIOverlayStyle(_systemUiStyle);
  await Future.wait([
    SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge),
    LocalStorageService.initialize(),
  ]);
  await AuthSessionStore.instance.restore();
  AppLanguageService.instance = AppLanguageService(
    LocalStorageService.instance.settings,
  );
  final hasValidSession = AuthSessionStore.instance.isAuthenticated;
  final settings = LocalStorageService.instance.settings;
  final shouldResumeScoring =
      hasValidSession &&
      settings.get(ScoringStorageKeys.apiResumeScoringSetting) == true &&
      (settings.get(ScoringStorageKeys.apiActiveSheetSetting) as String?)
              ?.isNotEmpty ==
          true;
  runApp(
    PatternScoringApp(
      initialRoute: shouldResumeScoring
          ? AppRoutes.scoring
          : hasValidSession
          ? AppRoutes.home
          : AppRoutes.login,
    ),
  );
}

const _systemUiStyle = SystemUiOverlayStyle(
  statusBarColor: Colors.transparent,
  statusBarIconBrightness: Brightness.dark,
  statusBarBrightness: Brightness.light,
  systemStatusBarContrastEnforced: false,
  systemNavigationBarColor: Colors.transparent,
  systemNavigationBarIconBrightness: Brightness.dark,
  systemNavigationBarDividerColor: Colors.transparent,
  systemNavigationBarContrastEnforced: false,
);

class PatternScoringApp extends StatelessWidget {
  const PatternScoringApp({super.key, required this.initialRoute});

  final String initialRoute;

  @override
  Widget build(BuildContext context) {
    return ValueListenableBuilder<Locale>(
      valueListenable: AppLanguageService.instance.locale,
      builder: (context, locale, _) => GetMaterialApp(
        locale: locale,
        supportedLocales: const [Locale('zh'), Locale('en')],
        localizationsDelegates: const [
          GlobalMaterialLocalizations.delegate,
          GlobalWidgetsLocalizations.delegate,
          GlobalCupertinoLocalizations.delegate,
        ],
        title: AppStrings.translate('花样跳绳打分系统', locale: locale),
        debugShowCheckedModeBanner: false,
        theme: AppTheme.light,
        initialBinding: InitialBinding(),
        initialRoute: initialRoute,
        getPages: AppPages.pages,
        defaultTransition: Transition.rightToLeft,
        transitionDuration: const Duration(milliseconds: 360),
        opaqueRoute: true,
        builder: (context, child) => AnnotatedRegion<SystemUiOverlayStyle>(
          value: _systemUiStyle,
          child: AppNoticeHost(
            child: _StartupPageReveal(
              child: MediaQuery(
                data: MediaQuery.of(
                  context,
                ).copyWith(textScaler: TextScaler.noScaling),
                child: child ?? const SizedBox.shrink(),
              ),
            ),
          ),
        ),
      ),
    );
  }
}

class _StartupPageReveal extends StatefulWidget {
  const _StartupPageReveal({required this.child});

  final Widget child;

  @override
  State<_StartupPageReveal> createState() => _StartupPageRevealState();
}

class _StartupPageRevealState extends State<_StartupPageReveal>
    with SingleTickerProviderStateMixin {
  late final AnimationController _controller;
  late final Animation<double> _opacity;
  late final Animation<double> _scale;
  late final Animation<Offset> _position;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 520),
    );
    final curved = CurvedAnimation(
      parent: _controller,
      curve: Curves.easeOutCubic,
    );
    _opacity = Tween<double>(begin: 0, end: 1).animate(curved);
    _scale = Tween<double>(begin: .992, end: 1).animate(curved);
    _position = Tween<Offset>(
      begin: const Offset(0, .012),
      end: Offset.zero,
    ).animate(curved);
    _controller.forward();
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return ColoredBox(
      color: const Color(0xFFF4F8FE),
      child: FadeTransition(
        opacity: _opacity,
        child: ScaleTransition(
          scale: _scale,
          child: SlideTransition(position: _position, child: widget.child),
        ),
      ),
    );
  }
}