nj/app/lib/core/routing/app_router.dart

// 暖记路由表 — go_router 20 页面

export '../../widgets/responsive_scaffold.dart';

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

import '../../widgets/responsive_scaffold.dart';

import '../../features/home/views/home_page.dart';
import '../../features/calendar/views/calendar_page.dart';
import '../../features/mood/views/mood_page.dart';
import '../../features/search/views/search_page.dart';
import '../../features/profile/views/profile_page.dart';
import '../../features/editor/views/editor_page.dart';
import '../../features/auth/views/login_page.dart';
import '../../features/class_/views/class_page.dart';
import '../../features/teacher/views/teacher_page.dart';
import '../../features/parent/views/parent_page.dart';
import '../../features/achievement/views/achievement_page.dart';
import '../../features/stickers/views/sticker_library_page.dart';
import '../../features/templates/views/template_gallery_page.dart';

// Shell 分支键
final _rootNavigatorKey = GlobalKey<NavigatorState>();
final _shellNavigatorKey = GlobalKey<NavigatorState>();

/// 暖记路由配置
final appRouter = GoRouter(
  navigatorKey: _rootNavigatorKey,
  initialLocation: '/home',
  debugLogDiagnostics: true,
  routes: [
    // 认证路由（无 Shell）
    GoRoute(
      path: '/login',
      name: 'login',
      builder: (context, state) => const LoginPage(),
    ),

    // 主 Shell 路由（底部导航 + 侧边导航）
    ShellRoute(
      navigatorKey: _shellNavigatorKey,
      builder: (context, state, child) {
        // 根据当前路径计算选中的 tab index
        final index = _selectedIndexFromLocation(state.uri.path);
        return _AppShell(
          selectedIndex: index,
          child: child,
        );
      },
      routes: [
        // Tab 0: 首页日记流
        GoRoute(
          path: '/home',
          name: 'home',
          builder: (context, state) => const HomePage(),
        ),
        // Tab 1: 日历
        GoRoute(
          path: '/calendar',
          name: 'calendar',
          builder: (context, state) => const CalendarPage(),
        ),
        // Tab 2: 心情
        GoRoute(
          path: '/mood',
          name: 'mood',
          builder: (context, state) => const MoodPage(),
        ),
        // Tab 3: 搜索
        GoRoute(
          path: '/search',
          name: 'search',
          builder: (context, state) => const SearchPage(),
        ),
        // Tab 4: 个人中心
        GoRoute(
          path: '/profile',
          name: 'profile',
          builder: (context, state) => const ProfilePage(),
        ),
      ],
    ),

    // 全屏页面（无底部导航）
    GoRoute(
      path: '/editor',
      name: 'editor',
      parentNavigatorKey: _rootNavigatorKey,
      builder: (context, state) {
        final journalId = state.uri.queryParameters['id'];
        return EditorPage(journalId: journalId);
      },
    ),
    GoRoute(
      path: '/class',
      name: 'class',
      parentNavigatorKey: _rootNavigatorKey,
      builder: (context, state) => const ClassPage(),
    ),
    GoRoute(
      path: '/teacher',
      name: 'teacher',
      parentNavigatorKey: _rootNavigatorKey,
      builder: (context, state) => const TeacherPage(),
    ),
    GoRoute(
      path: '/parent',
      name: 'parent',
      parentNavigatorKey: _rootNavigatorKey,
      builder: (context, state) => const ParentPage(),
    ),
    GoRoute(
      path: '/achievements',
      name: 'achievements',
      parentNavigatorKey: _rootNavigatorKey,
      builder: (context, state) => const AchievementPage(),
    ),
    GoRoute(
      path: '/stickers',
      name: 'stickers',
      parentNavigatorKey: _rootNavigatorKey,
      builder: (context, state) => const StickerLibraryPage(),
    ),
    GoRoute(
      path: '/templates',
      name: 'templates',
      parentNavigatorKey: _rootNavigatorKey,
      builder: (context, state) => const TemplateGalleryPage(),
    ),
  ],
);

/// 路径 → Tab index 映射
int _selectedIndexFromLocation(String location) {
  if (location.startsWith('/calendar')) return 1;
  if (location.startsWith('/mood')) return 2;
  if (location.startsWith('/search')) return 3;
  if (location.startsWith('/profile')) return 4;
  return 0; // 默认首页
}

/// App Shell — 包裹 ResponsiveScaffold
class _AppShell extends StatelessWidget {
  const _AppShell({
    required this.selectedIndex,
    required this.child,
  });

  final int selectedIndex;
  final Widget child;

  @override
  Widget build(BuildContext context) {
    return ResponsiveScaffold(
      selectedIndex: selectedIndex,
      onDestinationSelected: (index) {
        switch (index) {
          case 0:
            context.go('/home');
          case 1:
            context.go('/calendar');
          case 2:
            context.go('/mood');
          case 3:
            context.go('/search');
          case 4:
            context.go('/profile');
        }
      },
      body: child,
      floatingActionButton: selectedIndex == 0
          ? FloatingActionButton(
              onPressed: () => context.go('/editor'),
              child: const Icon(Icons.edit_rounded),
            )
          : null,
    );
  }
}