import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:patbond_flutter/app/app_localization.dart';
import 'package:patbond_flutter/core/network/api_exception.dart';
import 'package:patbond_flutter/core/theme/app_theme.dart';
import 'package:patbond_flutter/core/widgets/app_date_picker.dart';
import 'package:patbond_flutter/features/pets/care_reminder_form_page.dart';
import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
import 'package:patbond_flutter/features/pets/pet_models.dart';

import '../../helpers/pet_test_helpers.dart';

void main() {
  late FakePetsRepository repository;
  late List<(String, Map<String, dynamic>?)> events;
  late HealthRecordAnalytics analytics;

  setUp(() {
    repository = FakePetsRepository();
    events = [];
    analytics = HealthRecordAnalytics(
      (name, [props]) async => events.add((name, props)),
    );
  });

  List<Map<String, dynamic>?> eventsOf(String name) => [
    for (final e in events)
      if (e.$1 == name) e.$2,
  ];

  Future<void> pumpForm(WidgetTester tester) async {
    tester.view.physicalSize = const Size(700, 1600);
    tester.view.devicePixelRatio = 1.0;
    addTearDown(tester.view.reset);
    await tester.pumpWidget(
      MaterialApp(
        theme: buildAppTheme(),
        // M3.5-01：与生产一致挂 zh-CN delegate。
        localizationsDelegates: appLocalizationsDelegates,
        supportedLocales: appSupportedLocales,
        locale: appLocale,
        home: Builder(
          builder: (context) => Scaffold(
            body: Center(
              child: TextButton(
                onPressed: () => Navigator.of(context).push(
                  MaterialPageRoute<CareReminder>(
                    builder: (_) => CareReminderFormPage(
                      repository: repository,
                      petId: 'p-1',
                      analytics: analytics,
                    ),
                  ),
                ),
                child: const Text('打开表单'),
              ),
            ),
          ),
        ),
      ),
    );
    await tester.tap(find.text('打开表单'));
    await tester.pumpAndSettle();
  }

  Future<void> fillValid(WidgetTester tester) async {
    await tester.tap(find.text('用药'));
    await tester.pump();
    await tester.enterText(
      find.widgetWithText(TextFormField, '提醒内容（如：体内外驱虫）'),
      '心丝虫预防药',
    );
    await tester.tap(find.text('到期日期'));
    await tester.pumpAndSettle();
    await tester.tap(find.text('确定'));
    await tester.pumpAndSettle();
  }

  testWidgets('started 去重：首次输入一次；四类类型可选', (tester) async {
    await pumpForm(tester);
    await fillValid(tester);
    await tester.enterText(
      find.widgetWithText(TextFormField, '提醒内容（如：体内外驱虫）'),
      '改个名字',
    );
    await tester.pump();

    final started = eventsOf('health_record_create_started');
    expect(started.single, {
      'recordType': 'reminder',
      'entryPoint': 'record_list',
    });
    // 四类类型齐备。
    for (final label in ['驱虫', '体检', '用药', '其他']) {
      expect(find.text(label), findsOneWidget);
    }
  });

  testWidgets('40300 横幅 / 网络 SnackBar 兜底 + 失败事件', (tester) async {
    var attempt = 0;
    repository.createCareReminderHandler = (petId, request) async {
      attempt++;
      if (attempt == 1) {
        throw const PetAccessDeniedException(message: '无权限');
      }
      throw const ApiNetworkException('断网');
    };

    await pumpForm(tester);
    await fillValid(tester);

    await tester.tap(find.text('保存提醒'));
    await tester.pumpAndSettle();
    expect(find.text('你没有权限为该宠物添加提醒'), findsOneWidget);

    await tester.tap(find.text('保存提醒'));
    await tester.pumpAndSettle();
    expect(find.text('网络异常，请检查网络后重试'), findsOneWidget);

    final failed = eventsOf('health_record_create_failed');
    expect(failed.length, 2);
    expect(failed[0], {
      'recordType': 'reminder',
      'failureReason': 'permission_denied',
      'attemptSeq': 1,
      'errorCode': 40300,
      'httpStatus': 403,
    });
    expect(failed[1]!['failureReason'], 'network_error');
    expect(failed[1]!['attemptSeq'], 2);
  });

  group('M3.5-02 · 到期日期录入（firstDate 就是今天的那一格）', () {
    testWidgets('未选日期时也有「今天」快捷键；一键落今天并清掉必填校验错', (tester) async {
      await pumpForm(tester);

      // 先触发必填校验错。
      await tester.tap(find.text('保存提醒'));
      await tester.pumpAndSettle();
      expect(find.text('未选择'), findsOneWidget);

      await tester.tap(find.text('今天'));
      await tester.pumpAndSettle();

      expect(find.text(dateToJson(DateTime.now())), findsOneWidget);
      expect(find.text('未选择'), findsNothing);
      expect(find.text('选择日期'), findsNothing);
    });

    testWidgets('业务约束不变：firstDate 今天（不许补记过去）、lastDate 五年后', (tester) async {
      await pumpForm(tester);

      await tester.tap(find.widgetWithText(ListTile, '到期日期'));
      await tester.pumpAndSettle();

      final dialog = tester.widget<DatePickerDialog>(
        find.byType(DatePickerDialog),
      );
      expect(dialog.firstDate, dateOnly(DateTime.now()));
      expect(dialog.lastDate, DateTime(DateTime.now().year + 5));
      expect(find.text('选择日期'), findsOneWidget);
    });
  });
}