import 'package:flutter/foundation.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';

import '../core/app_keys.dart';
import '../features/auth/application/session_controller.dart';
import '../features/auth/presentation/login_page.dart';
import '../features/customer/presentation/customer_detail_page.dart';
import '../features/customer/presentation/customer_edit_page.dart';
import '../features/project/presentation/project_detail_page.dart';
import '../features/survey/presentation/survey_form_page.dart';
import '../features/survey/presentation/survey_list_page.dart';
import '../features/visit/presentation/visit_batch_page.dart';
import '../features/visit/presentation/visit_detail_page.dart';
import '../features/visit/presentation/visit_execute_page.dart';
import '../features/visit/presentation/visit_form_page.dart';
import '../features/visit/presentation/visit_list_page.dart';
import 'tabs_page.dart';

/// 会话语义变化时驱动 go_router 重新执行 `redirect`。
class _SessionRefresh extends ChangeNotifier {
  void bump() => notifyListeners();
}

/// 路由表，对应 uni-app 版 `pages.json` 的 12 个页面。
///
/// 除登录页与 Tab 容器页外，其余均为二级页，统一使用主题里的
/// `CupertinoPageTransitionsBuilder`（新页面从右侧滑入），
/// 与源项目 `animationType: slide-in-right` 的表现一致。
final routerProvider = Provider<GoRouter>((ref) {
  final refresh = _SessionRefresh();
  ref.listen(sessionProvider, (_, _) => refresh.bump());
  ref.onDispose(refresh.dispose);

  int? queryId(GoRouterState state) =>
      int.tryParse(state.uri.queryParameters['id'] ?? '');

  return GoRouter(
    navigatorKey: AppKeys.rootNavigator,
    initialLocation: '/login',
    refreshListenable: refresh,
    redirect: (context, state) {
      final loggedIn = ref.read(sessionProvider).isLoggedIn;
      final atLogin = state.matchedLocation == '/login';
      if (!loggedIn) return atLogin ? null : '/login';
      if (atLogin) return '/tabs';
      return null;
    },
    routes: [
      GoRoute(path: '/login', builder: (context, state) => const LoginPage()),
      GoRoute(path: '/tabs', builder: (context, state) => const TabsPage()),

      // 客户模块
      GoRoute(
        path: '/customer/detail/:id',
        builder: (context, state) =>
            CustomerDetailPage(id: int.parse(state.pathParameters['id']!)),
      ),
      GoRoute(
        path: '/customer/edit',
        builder: (context, state) => CustomerEditPage(id: queryId(state)),
      ),

      // 拜访模块
      GoRoute(
        path: '/visit',
        builder: (context, state) => const VisitListPage(),
      ),
      GoRoute(
        path: '/visit/detail/:id',
        builder: (context, state) =>
            VisitDetailPage(id: int.parse(state.pathParameters['id']!)),
      ),
      GoRoute(
        path: '/visit/form',
        builder: (context, state) => VisitFormPage(id: queryId(state)),
      ),
      GoRoute(
        path: '/visit/execute/:id',
        builder: (context, state) =>
            VisitExecutePage(id: int.parse(state.pathParameters['id']!)),
      ),
      GoRoute(
        path: '/visit/batch',
        builder: (context, state) => const VisitBatchPage(),
      ),

      // 勘测模块
      GoRoute(
        path: '/survey',
        builder: (context, state) => const SurveyListPage(),
      ),
      GoRoute(
        path: '/survey/form',
        builder: (context, state) => SurveyFormPage(
          id: queryId(state),
          customerId: int.tryParse(state.uri.queryParameters['customerId'] ?? ''),
        ),
      ),

      // 项目模块（按后端 project-plans 真实字段重做）
      GoRoute(
        path: '/project/detail/:id',
        builder: (context, state) =>
            ProjectDetailPage(id: int.parse(state.pathParameters['id']!)),
      ),
    ],
  );
});