import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:get/get.dart';

import 'package:pj_supermarket_cloud/sub_screen/common/models/customer_display_models.dart';
import 'package:pj_supermarket_cloud/sub_screen/common/utils/customer_display_coordinator.dart';
import 'package:pj_supermarket_cloud/sub_screen/page/customer_display.dart';
import 'package:pj_supermarket_cloud/sub_screen/page/customer_preview.dart';

void main() {
  for (final size in [const Size(1920, 1080), const Size(1280, 720)]) {
    testWidgets('${size.width.toInt()}x${size.height.toInt()} 六种状态无布局异常',
        (tester) async {
      tester.view.physicalSize = size;
      tester.view.devicePixelRatio = 1;
      addTearDown(tester.view.resetPhysicalSize);
      addTearDown(tester.view.resetDevicePixelRatio);

      for (final scenario in CustomerDisplayScenario.values) {
        final coordinator = CustomerDisplayCoordinator(
          initialState: CustomerDisplayState.demo(scenario),
        );
        await tester.pumpWidget(
          MaterialApp(
            debugShowCheckedModeBanner: false,
            home: CustomerDisplayPage(coordinator: coordinator),
          ),
        );
        await tester.pump();

        final scenarioKey = scenario == CustomerDisplayScenario.idle
            ? const ValueKey('customer-welcome-page')
            : ValueKey('customer-scenario-${scenario.name}');
        expect(find.byKey(scenarioKey), findsOneWidget);
        expect(tester.takeException(), isNull);

        if (scenario == CustomerDisplayScenario.idle) {
          expect(find.text('终端服务已就绪'), findsOneWidget);
          expect(find.text('等待添加商品'), findsNothing);
        } else {
          expect(find.text('张*明，您好'), findsOneWidget);
          expect(find.text('张小明'), findsNothing);
          expect(find.text('¥ 46.70'), findsOneWidget);
          expect(find.text('¥ 3.00'), findsOneWidget);
          expect(find.text('¥ 49.70'), findsOneWidget);
          expect(find.text('biz-xfj-customer-preview'), findsNothing);
        }

        if (scenario == CustomerDisplayScenario.success) {
          expect(find.text('本次购买商品'), findsOneWidget);
          expect(find.text('请核对商品信息'), findsNothing);
          expect(find.byKey(const ValueKey('customer-payment-success')),
              findsOneWidget);
          expect(find.byKey(const ValueKey('customer-success-countdown')),
              findsOneWidget);
          expect(find.text('请带好您的商品'), findsOneWidget);
        }

        await tester.pumpWidget(const SizedBox.shrink());
        coordinator.dispose();
      }
    });
  }

  testWidgets('悬浮按钮和系统返回请求都能退出全屏预览', (tester) async {
    await tester.pumpWidget(const _PreviewNavigationHarness());

    await tester.tap(find.text('打开预览'));
    await tester.pumpAndSettle();
    expect(find.text('退出预览'), findsOneWidget);

    await tester.tap(find.text('退出预览'));
    await tester.pumpAndSettle();
    expect(find.text('打开预览'), findsOneWidget);

    await tester.tap(find.text('打开预览'));
    await tester.pumpAndSettle();
    await tester.binding.handlePopRoute();
    await tester.pumpAndSettle();
    expect(find.text('打开预览'), findsOneWidget);
  });

  testWidgets('从内层终端设置打开预览后返回原设置状态', (tester) async {
    await tester.pumpWidget(const _NestedPreviewNavigationHarness());

    await tester.tap(find.text('商品核对'));
    await tester.tap(find.text('全屏预览'));
    await tester.pumpAndSettle();
    expect(find.text('退出预览'), findsOneWidget);

    await tester.tap(find.text('退出预览'));
    await tester.pumpAndSettle();
    expect(find.text('商品核对：已选中'), findsOneWidget);
  });

  testWidgets('套餐副屏展开组成并区分套餐与单品', (tester) async {
    tester.view.physicalSize = const Size(1280, 720);
    tester.view.devicePixelRatio = 1;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);

    final coordinator = CustomerDisplayCoordinator();
    addTearDown(coordinator.dispose);
    coordinator.handleAction('updateCard', _comboProductEvent());

    await tester.pumpWidget(
      MaterialApp(
        debugShowCheckedModeBanner: false,
        home: CustomerDisplayPage(coordinator: coordinator),
      ),
    );
    await tester.pump();

    expect(find.text('套餐'), findsOneWidget);
    expect(find.text('单品'), findsOneWidget);
    expect(find.text('中餐A'), findsOneWidget);
    expect(find.text('蒜香黑虎虾'), findsOneWidget);
    expect(find.text('口蘑炒牛肉'), findsOneWidget);
    expect(find.text('清炒有机西兰花'), findsOneWidget);
    expect(find.byKey(const ValueKey('combo-details-中餐A')), findsOneWidget);
    expect(find.text('明细不单独计价'), findsOneWidget);
    expect(tester.takeException(), isNull);
  });
}

class _PreviewNavigationHarness extends StatelessWidget {
  const _PreviewNavigationHarness();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Builder(
        builder: (context) => Scaffold(
          body: Center(
            child: ElevatedButton(
              onPressed: () => Navigator.of(context).push<void>(
                MaterialPageRoute(
                  builder: (_) => const CustomerDisplayPreviewPage(
                    arguments: {'scenario': 'paying'},
                  ),
                ),
              ),
              child: const Text('打开预览'),
            ),
          ),
        ),
      ),
    );
  }
}

class _NestedPreviewNavigationHarness extends StatelessWidget {
  const _NestedPreviewNavigationHarness();

  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      home: Navigator(
        onGenerateRoute: (_) => MaterialPageRoute<void>(
          builder: (innerContext) => _NestedSettingState(
            onPreview: () => Navigator.of(
              innerContext,
              rootNavigator: true,
            ).push<void>(
              GetPageRoute<void>(
                routeName: '/customer',
                settings: const RouteSettings(
                  name: '/customer',
                  arguments: {'scenario': 'review'},
                ),
                page: () => const CustomerDisplayPreviewPage(
                  arguments: {'scenario': 'review'},
                ),
                transition: Transition.noTransition,
                transitionDuration: Duration.zero,
              ),
            ),
          ),
        ),
      ),
    );
  }
}

class _NestedSettingState extends StatefulWidget {
  const _NestedSettingState({required this.onPreview});

  final VoidCallback onPreview;

  @override
  State<_NestedSettingState> createState() => _NestedSettingStateState();
}

class _NestedSettingStateState extends State<_NestedSettingState> {
  bool _selected = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          TextButton(
            onPressed: () => setState(() => _selected = true),
            child: const Text('商品核对'),
          ),
          ElevatedButton(
            onPressed: widget.onPreview,
            child: const Text('全屏预览'),
          ),
          if (_selected) const Text('商品核对：已选中'),
        ],
      ),
    );
  }
}

Map<String, dynamic> _comboProductEvent() {
  return {
    'sysType': 'CANTEEN',
    'payUser': null,
    'totalPrice': 6400,
    'amountMealPrice': 0,
    'shopList': <Map<String, dynamic>>[
      {
        'productName': '中餐A',
        'productPrice': 5200,
        'nature': 'DEFAULT',
        'productNumber': 1,
        'productWidget': 0,
        'totalPrice': 5200,
        'isCombo': true,
        'comboItems': <Map<String, dynamic>>[
          {'name': '蒜香黑虎虾', 'quantity': 1},
          {'name': '口蘑炒牛肉', 'quantity': 1},
          {'name': '清炒有机西兰花', 'quantity': 1},
        ],
      },
      {
        'productName': '例汤',
        'productPrice': 1200,
        'nature': 'DEFAULT',
        'productNumber': 1,
        'productWidget': 0,
        'totalPrice': 1200,
        'isCombo': false,
      },
    ],
  };
}