import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../core/api_client.dart';
import '../l10n/app_localizations.dart';
import '../pages/home_page.dart';
import '../pages/login_page.dart';
import '../pages/password_change_page.dart';
import 'locale_controller.dart';
import 'theme.dart';

/// 根导航键：[ApiClient.onUnauthorized]（非 UI 上下文触发）跳转 /login 用。
final GlobalKey<NavigatorState> rootNavigatorKey =
    GlobalKey<NavigatorState>();

/// App 根组件：主题 + l10n 委托 + 命名路由 + 401 驱逐接线。
///
/// 基线路由为命名路由（/login → /home → /password-change）；随页面增长再
/// 评估是否迁移 go_router，当前保持零额外依赖。
/// initState 注册 [ApiClient.onUnauthorized]：任意业务端点 401（会话过期）
/// 即清空栈回到 /login（登录/修改密码端点自身的 401 不触发，见 ApiClient）。
class PhotoLiveApp extends ConsumerStatefulWidget {
  const PhotoLiveApp({super.key});

  @override
  ConsumerState<PhotoLiveApp> createState() => _PhotoLiveAppState();
}

class _PhotoLiveAppState extends ConsumerState<PhotoLiveApp> {
  @override
  void initState() {
    super.initState();
    ref.read(apiClientProvider).onUnauthorized = () {
      rootNavigatorKey.currentState
          ?.pushNamedAndRemoveUntil('/login', (route) => false);
    };
  }

  @override
  Widget build(BuildContext context) {
    final locale = ref.watch(localeSettingsProvider);
    return MaterialApp(
      navigatorKey: rootNavigatorKey,
      onGenerateTitle: (context) => AppLocalizations.of(context).appName,
      theme: AppTheme.light,
      darkTheme: AppTheme.dark,
      locale: locale,
      supportedLocales: AppLocalizations.supportedLocales,
      localizationsDelegates: AppLocalizations.localizationsDelegates,
      routes: {
        '/login': (context) => const LoginPage(),
        '/home': (context) => const HomePage(),
        '/password-change': (context) => const PasswordChangePage(),
      },
      home: const LoginPage(),
    );
  }
}