import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:go_router/go_router.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:jiu_client/core/auth/auth_state.dart';
import 'package:jiu_client/core/theme/themes.dart';
import 'package:jiu_client/models/shop.dart';
import 'package:jiu_client/providers/shop_provider.dart';
import 'package:jiu_client/providers/license_provider.dart';
import 'package:jiu_client/providers/update_provider.dart';
import 'package:jiu_client/providers/connectivity_provider.dart';
import 'package:jiu_client/providers/session_heartbeat.dart';
import 'package:jiu_client/screens/shell/app_shell.dart';

/// design-distill 阶段4：app 外壳（顶栏 + 侧栏 + 内容区）golden × 三主题。
/// 锁住导航 chrome 随主题换色——这是最显眼的主题面，之前各屏 golden 都不含外壳。
/// 需 MaterialApp.router（外壳依赖 StatefulNavigationShell），故为自定义 golden。
/// 更新基准：flutter test --update-goldens test/golden/app_shell_golden_test.dart

class _FakeAuth extends AuthNotifier {
  _FakeAuth() {
    state = const AuthState(
      user: AuthUser(
          accessToken: 't', refreshToken: 'r', id: 1, username: 'wang',
          realName: '王经理', shopNo: 'DBZB-001', shopId: 1, role: 'admin'),
    );
  }
}

class _FakeUpdate extends UpdateNotifier {
  @override
  Future<AppUpdateInfo?> build() async => null;
}

class _FakeLicense extends LicenseNotifier {
  @override
  Future<LicenseInfo?> build() async => null;
}

const _shop = ShopInfo(
    id: 1, code: 'DBZB-001', name: '鼎昌酒行',
    address: '浙江省杭州市', phone: '0571-88886666', managerName: '王经理');

List<Override> _overrides() => [
      authStateProvider.overrideWith((ref) => _FakeAuth()),
      shopInfoProvider.overrideWith((ref) => _shop),
      licenseProvider.overrideWith(() => _FakeLicense()),
      updateProvider.overrideWith(() => _FakeUpdate()),
      // 跳过联网首检 / 不启动心跳，避免后台 Timer 泄漏
      connectivityProvider
          .overrideWith((ref) => ConnectivityNotifier(skipInit: true)),
      sessionHeartbeatProvider.overrideWith((ref) => SessionHeartbeat(ref)),
      appVersionProvider.overrideWith((ref) => 'v1.0.72'),
      isReadonlyProvider.overrideWithValue(false),
    ];

GoRouter _router() => GoRouter(
      initialLocation: '/inventory',
      routes: [
        StatefulShellRoute.indexedStack(
          builder: (ctx, state, shell) => AppShell(navigationShell: shell),
          branches: [
            StatefulShellBranch(routes: [
              GoRoute(
                  path: '/inventory',
                  builder: (_, __) => const SizedBox.expand()),
            ]),
          ],
        ),
      ],
    );

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();
  SharedPreferences.setMockInitialValues({});

  for (final theme in const ['a', 'b', 'c']) {
    testWidgets('app shell · theme $theme', (tester) async {
      tester.view.physicalSize = const Size(2560, 1600);
      tester.view.devicePixelRatio = 2.0;
      addTearDown(tester.view.resetPhysicalSize);
      addTearDown(tester.view.resetDevicePixelRatio);

      await tester.pumpWidget(ProviderScope(
        overrides: _overrides(),
        child: MaterialApp.router(
          debugShowCheckedModeBanner: false,
          theme: buildTheme(theme),
          routerConfig: _router(),
        ),
      ));
      await tester.pumpAndSettle();

      await expectLater(
        find.byType(MaterialApp),
        matchesGoldenFile('goldens/app_shell_$theme.png'),
      );
    });
  }
}