import 'dart:typed_data';

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

import 'package:lanebow/screens/club/events_screen.dart';
import 'package:lanebow/services/auth_service.dart';
import 'package:lanebow/services/club_service.dart';
import 'package:lanebow/services/event_service.dart';
import 'package:lanebow/models/event_model.dart';
import 'package:lanebow/services/api_service.dart';

// Stub AuthService: 항상 토큰을 제공해 _loadEvents 내 initialize(token!) 경로가 실패하지 않도록 함
class StubAuthService extends AuthService {
  @override
  String? get token => 'test-token';
}

// Stub EventService: 네트워크 호출 없이 createEventsFromFile만 성공 처리
class StubEventService extends EventService {
  StubEventService() : super.forTest(ApiService());

  @override
  Future<List<Event>> createEventsFromFile(List<Map<String, dynamic>> eventsData) async {
    // 입력된 맵을 Event로 변환하여 반환 (필수 필드만 셋업)
    final List<Event> created = [];
    for (var i = 0; i < eventsData.length; i++) {
      final e = eventsData[i];
      created.add(Event(
        id: 'e$i',
        clubId: (e['clubId']?.toString() ?? 'club-1'),
        title: (e['title']?.toString() ?? 'Untitled'),
        startDate: DateTime.tryParse(e['startDate']?.toString() ?? '') ?? DateTime(2025, 1, 1),
        endDate: null,
        location: e['location']?.toString(),
        type: e['type']?.toString(),
        status: e['status']?.toString(),
        maxParticipants: null,
        currentParticipants: null,
        gameCount: null,
        participantFee: null,
        registrationDeadline: null,
        publicHash: null,
        accessPassword: null,
        isActive: true,
      ));
    }
    return created;
  }
}


void main() {
  group('EventsScreen 파일 업로드 플로우', () {
    testWidgets('CSV 바이트 주입으로 성공 플로우 및 결과 다이얼로그 표시/닫기', (tester) async {
      final auth = StubAuthService();
      final club = ClubService.forTest(ApiService()); // 호출되지 않지만 타입 만족
      final event = StubEventService();

      await tester.pumpWidget(
        MultiProvider(
          providers: [
            ChangeNotifierProvider<AuthService>.value(value: auth),
            ChangeNotifierProvider<ClubService>.value(value: club),
            ChangeNotifierProvider<EventService>.value(value: event),
          ],
          child: const MaterialApp(home: EventsScreen()),
        ),
      );

      await tester.pump();

      // CSV 본문 구성: 2 유효, 1 무효(title 누락)
      const csv = 'title,startDate,endDate,description,location,status,type,maxParticipants\n'
          'Match A,2025-10-01,,,,,,\n'
          ',2025-10-02,,,,,,\n'
          'Match B,2025-10-03,,,,,,\n';
      final bytes = Uint8List.fromList(csv.codeUnits);

      // 테스트 전용 훅으로 임포트 실행
      final stateFinder = find.byType(EventsScreen);
      expect(stateFinder, findsOneWidget);
      final state = tester.state(stateFinder);
      await (state as dynamic).importFromBytesForTest('sample.csv', bytes);

      // 결과 다이얼로그 표시 확인
      await tester.pumpAndSettle(const Duration(milliseconds: 300));
      expect(find.text('파일 처리 결과'), findsOneWidget);
      expect(find.textContaining('생성된 이벤트:'), findsOneWidget);
      expect(find.textContaining('유효하지 않은 행:'), findsOneWidget);

      // 닫기 눌러 닫힘 확인
      final closeBtn = find.text('닫기');
      expect(closeBtn, findsOneWidget);
      await tester.tap(closeBtn);
      await tester.pumpAndSettle();

      // 다이얼로그 사라짐
      expect(find.text('파일 처리 결과'), findsNothing);
    });
  });
}