import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:integration_test/integration_test.dart';
import 'package:timezone/data/latest.dart' as tzdata;
import 'package:hepan_everyday/services/android_calendar_service.dart';
import 'package:hepan_everyday/domain/schedule_engine.dart';

import '../test/domain/schedule_engine_test.dart' show course;

void main() {
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
  testWidgets(
    'native dedicated calendar creates updates deduplicates and deletes owned events',
    (tester) async {
      tzdata.initializeTimeZones();
      await tester.pumpWidget(const MaterialApp(home: Scaffold()));
      final gateway = MethodCalendarGateway();
      final service = AndroidCalendarService(gateway);
      expect(await service.requestAccess(),isTrue);
      final calendars = await service.listWritableCalendars();
      final selected = calendars.where(
        (c) => c.name == 'Hepan_Integration_Test',
      );
      if (selected.isEmpty) {
        fail('请先在专用模拟器建立 Hepan Integration Test 日历');
      }
      final id = selected.single.id;
      final events = ScheduleEngine.occurrences([
        course(last: 2),
      ], Semester(startDate: DateTime(2026, 9, 9), totalWeeks: 1));
      var mapping = await service.sync(events, id, {});
      expect(mapping, hasLength(1));
      final original = mapping.values.single;
      mapping = await service.sync(events, id, {}); // lost mapping recovery
      expect(mapping.values.single, original);
      expect(await gateway.ownedEvents(id), hasLength(1));
      await gateway.delete(original, 'wrong-occurrence');
      expect(await gateway.ownedEvents(id), hasLength(1));
      await service.deleteOwned(mapping);
      expect(await gateway.ownedEvents(id), isEmpty);
    },
  );
}