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

import 'package:lanebow/models/participant_model.dart';
import 'package:lanebow/screens/club/participant_form_screen.dart';
import 'package:lanebow/services/event_service.dart';

class FakeEventService extends EventService {
  Map<String, dynamic>? lastPayload;
  String? lastEventId;
  String? lastParticipantId;
  bool addCalled = false;
  bool updateCalled = false;

  // EventService의 공개 API 중 테스트에 필요한 최소 메서드만 구현
  @override
  Future<Participant> addParticipant(String eventId, Map<String, dynamic> participantData) async {
    lastEventId = eventId;
    lastPayload = participantData;
    addCalled = true;
    // 응답은 신규 Participant로 모의
    return Participant(
      id: 'new-1',
      eventId: eventId,
      memberId: '',
      name: participantData['name'] as String?,
      email: participantData['email'] as String?,
      phoneNumber: participantData['phoneNumber'] as String?,
      status: participantData['status'] as String?,
      isPaid: participantData['isPaid'] as bool? ?? false,
      paidAmount: participantData['paidAmount'] as double?,
      notes: participantData['notes'] as String?,
    );
  }

  @override
  Future<Participant> updateParticipant(String eventId, String participantId, Map<String, dynamic> participantData) async {
    lastEventId = eventId;
    lastParticipantId = participantId;
    lastPayload = participantData;
    updateCalled = true;
    return Participant(
      id: participantId,
      eventId: eventId,
      memberId: '',
      name: participantData['name'] as String?,
      email: participantData['email'] as String?,
      phoneNumber: participantData['phoneNumber'] as String?,
      status: participantData['status'] as String?,
      isPaid: participantData['isPaid'] as bool? ?? false,
      paidAmount: participantData['paidAmount'] as double?,
      notes: participantData['notes'] as String?,
    );
  }

  // 나머지는 사용하지 않음
}

Widget _wrapWithProviders(Widget child, EventService service) {
  return MultiProvider(
    providers: [
      ChangeNotifierProvider<EventService>.value(value: service),
    ],
    child: MaterialApp(home: child),
  );
}

void main() {
  group('ParticipantFormScreen', () {
    testWidgets('편집 모드: 영문 status와 isPaid가 저장 시 올바르게 전송되고 paymentStatus 포함', (tester) async {
      final fakeService = FakeEventService();
      final participant = Participant(
        id: 'p1',
        eventId: 'e1',
        memberId: 'm1',
        name: '홍길동',
        status: 'confirmed',
        isPaid: true,
      );

      await tester.pumpWidget(
        _wrapWithProviders(
          ParticipantFormScreen(eventId: 'e1', participant: participant),
          fakeService,
        ),
      );

      // 저장 아이콘 탭
      final saveButton = find.byIcon(Icons.save);
      expect(saveButton, findsOneWidget);
      await tester.tap(saveButton);
      await tester.pumpAndSettle();

      expect(fakeService.updateCalled, isTrue);
      expect(fakeService.lastEventId, 'e1');
      expect(fakeService.lastParticipantId, 'p1');
      // 상태는 영문으로 전송되어야 함
      expect(fakeService.lastPayload!['status'], 'confirmed');
      // 결제 상태 동기화
      expect(fakeService.lastPayload!['isPaid'], isTrue);
      expect(fakeService.lastPayload!['paymentStatus'], 'paid');
    });

    testWidgets('편집 모드: 알 수 없는 status는 안전 기본값(pending)으로 전송', (tester) async {
      final fakeService = FakeEventService();
      final participant = Participant(
        id: 'p2',
        eventId: 'e2',
        memberId: 'm2',
        name: '아무개',
        status: 'unknown',
        isPaid: false,
      );

      await tester.pumpWidget(
        _wrapWithProviders(
          ParticipantFormScreen(eventId: 'e2', participant: participant),
          fakeService,
        ),
      );

      // 저장
      await tester.tap(find.byIcon(Icons.save));
      await tester.pumpAndSettle();

      expect(fakeService.updateCalled, isTrue);
      expect(fakeService.lastPayload!['status'], 'pending');
      expect(fakeService.lastPayload!['paymentStatus'], 'unpaid');
    });

    testWidgets('추가 모드: 빈 이메일/전화/메모는 명시적 null로 전송', (tester) async {
      final fakeService = FakeEventService();

      await tester.pumpWidget(
        _wrapWithProviders(
          const ParticipantFormScreen(eventId: 'evt-1'),
          fakeService,
        ),
      );

      // 필수 이름 입력
      await tester.enterText(find.byType(TextFormField).first, '새 참가자');

      // 저장
      await tester.tap(find.byIcon(Icons.save));
      await tester.pumpAndSettle();

      expect(fakeService.addCalled, isTrue);
      expect(fakeService.lastPayload!['email'], isNull);
      expect(fakeService.lastPayload!['phoneNumber'], isNull);
      expect(fakeService.lastPayload!['notes'], isNull);
    });
  });
}