import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'navigation_provider.dart';
import '../pages/auth/login_page.dart';
import '../pages/home/home_page.dart';
import '../pages/chart/trend_page.dart';
import '../pages/medication/medication_list_page.dart';
import '../pages/medication/medication_checkin_page.dart';
import '../pages/medication/medication_edit_page.dart';
import '../pages/report/report_pages.dart';
import '../pages/report/ai_analysis_page.dart';
import '../pages/consultation/consultation_pages.dart';
import '../pages/settings/settings_pages.dart';
import '../pages/settings/notification_prefs_page.dart';
import '../pages/notifications/notification_center_page.dart';
import '../pages/history/conversation_history_page.dart';
import '../pages/profile/profile_page.dart';
import '../pages/diet/diet_capture_page.dart';
import '../pages/device/device_scan_page.dart';
import '../pages/device/device_management_page.dart';
import '../pages/remaining_pages.dart';
import '../pages/doctor/doctor_home_page.dart';
import '../pages/doctor/doctor_patient_detail_page.dart';
import '../pages/doctor/doctor_report_detail_page.dart';
import '../pages/doctor/doctor_followup_edit_page.dart';
import '../pages/doctor/doctor_settings_page.dart';
import '../pages/doctor/doctor_profile_page.dart';
import '../pages/admin/admin_home_page.dart';
import '../pages/admin/admin_add_doctor_page.dart';
import '../providers/auth_provider.dart' show userRoleProvider;
import '../widgets/app_error_state.dart';

Widget _missingParamPage() {
  return const Scaffold(
    body: AppErrorState(title: '页面参数错误', subtitle: '缺少打开页面所需的信息，请返回后重试'),
  );
}

String? _requiredParam(Map<String, String> params, String key) {
  final value = params[key]?.trim();
  return value == null || value.isEmpty ? null : value;
}

/// 根据路由信息返回对应页面
Widget buildPage(RouteInfo route, WidgetRef ref) {
  final params = route.params;
  switch (route.name) {
    case 'login':
      return const LoginPage();
    case 'home':
      final role = ref.watch(userRoleProvider);
      return role == 'Doctor' ? const DoctorHomePage() : const HomePage();
    case 'doctorHome':
      return const DoctorHomePage();
    case 'adminHome':
      return const AdminHomePage();
    case 'adminAddDoctor':
      return const AdminAddDoctorPage();
    case 'trend':
      return TrendPage(
        metricType: params['type']?.isNotEmpty == true ? params['type'] : null,
      );
    case 'calendar':
      return const HealthCalendarPage();
    case 'medications':
      return const MedicationListPage();
    case 'medCheckIn':
      return MedicationCheckInPage(medId: params['id']);
    case 'medicationEdit':
      return const MedicationEditPage();
    case 'reports':
      return const ReportListPage();
    case 'aiAnalysis':
      final id = _requiredParam(params, 'id');
      return id == null ? _missingParamPage() : AiAnalysisPage(id: id);
    case 'reportOriginal':
      return ReportOriginalPage(
        url: params['url'] ?? '',
        title: params['title'] ?? '原始报告',
      );
    case 'exercisePlan':
      return const ExercisePlanPage();
    case 'exercisePlanDetail':
      return const ExercisePlanPage();
    case 'exerciseCreate':
      return const ExercisePlanCreatePage();
    case 'dietRecords':
      return const DietRecordListPage();
    case 'dietCapture':
      return const DietCapturePage();
    case 'profile':
      return const ProfilePage();
    case 'doctorProfile':
      return const DoctorProfileEditPage();
    case 'doctorSettings':
      return const DoctorSettingsPage();
    case 'doctorPatientDetail':
      final id = _requiredParam(params, 'id');
      return id == null ? _missingParamPage() : DoctorPatientDetailPage(id: id);
    case 'doctorChat':
      final id = _requiredParam(params, 'id');
      return id == null ? _missingParamPage() : DoctorChatPage(id: id);
    case 'doctorReportDetail':
      final id = _requiredParam(params, 'id');
      return id == null ? _missingParamPage() : DoctorReportDetailPage(id: id);
    case 'doctorFollowUpEdit':
      final id = _requiredParam(params, 'id');
      return id == null ? _missingParamPage() : DoctorFollowUpEditPage(id: id);
    case 'devices':
      return const DeviceManagementPage();
    case 'deviceScan':
      return const DeviceScanPage();
    case 'healthArchive':
      return const HealthArchivePage();
    case 'followups':
      return const FollowUpListPage();
    case 'settings':
      return const SettingsPage();
    case 'notificationPrefs':
      return const NotificationPrefsPage();
    case 'notifications':
      return const NotificationCenterPage();
    case 'conversationHistory':
      return const ConversationHistoryPage();
    case 'staticText':
      final type = _requiredParam(params, 'type');
      return type == null ? _missingParamPage() : StaticTextPage(type: type);
    case 'dietDetail':
      final id = _requiredParam(params, 'id');
      return id == null ? _missingParamPage() : DietRecordDetailPage(id: id);
    default:
      return const LoginPage();
  }
}

// ── 医生端次级页面 Stubs（逐步实现）──
