다시봄 × Firebase
연동 완전 가이드

# 1. FlutterFire CLI 전역 설치
dart pub global activate flutterfire_cli

# 2. Firebase CLI 로그인
firebase login

# 3. FlutterFire 설정 (대화형 프롬프트 진행)
flutterfire configure

# → 위에서 생성한 class="token-string">'dacibom' 프로젝트를 선택
# → Android, iOS 플랫폼 모두 선택
# → lib/firebase_options.dart 파일이 자동 생성됩니다

import class="token-string">'package:firebase_core/firebase_core.dart';
import class="token-string">'firebase_options.dart'; class=class="token-string">"token-comment">// 자동 생성된 파일

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  class=class="token-string">"token-comment">// Firebase 초기화 (반드시 runApp 전에 호출)
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

  runApp(
    MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => AuthService()),
        ChangeNotifierProvider(create: (_) => AiChatService()),
      ],
      child: const DacibomApp(),
    ),
  );
}

import class="token-string">'package:firebase_auth/firebase_auth.dart';
import class="token-string">'package:flutter/material.dart';

class AuthService extends ChangeNotifier {
  final FirebaseAuth _auth = FirebaseAuth.instance;
  bool _isAuthenticated = false;
  String? _verificationId;
  String? _phoneNumber;

  bool get isAuthenticated => _isAuthenticated;
  String? get phoneNumber => _phoneNumber;

  class=class="token-string">"token-comment">// ① SMS 인증 요청
  Future<void> requestSmsCode(String phone) async {
    class=class="token-string">"token-comment">// 한국 번호 형식 변환: 01012345678 → +821012345678
    final formatted = class="token-string">'+82${phone.substring(1)}';
    _phoneNumber = phone;

    await _auth.verifyPhoneNumber(
      phoneNumber: formatted,
      timeout: const Duration(seconds: 60),
      verificationCompleted: (PhoneAuthCredential credential) async {
        class=class="token-string">"token-comment">// Android 자동 인증 처리
        await _auth.signInWithCredential(credential);
        _isAuthenticated = true;
        notifyListeners();
      },
      verificationFailed: (FirebaseAuthException e) {
        debugPrint(class="token-string">'인증 실패: ${e.message}');
      },
      codeSent: (String verificationId, int? resendToken) {
        _verificationId = verificationId;
        notifyListeners();
      },
      codeAutoRetrievalTimeout: (String verificationId) {
        _verificationId = verificationId;
      },
    );
  }

  class=class="token-string">"token-comment">// ② SMS 코드 확인 및 로그인
  Future verifySmsCode(String code) async {
    if (_verificationId == null) return false;

    try {
      final credential = PhoneAuthProvider.credential(
        verificationId: _verificationId!,
        smsCode: code,
      );
      final result = await _auth.signInWithCredential(credential);
      _isAuthenticated = result.user != null;
      notifyListeners();
      return _isAuthenticated;
    } on FirebaseAuthException catch (e) {
      debugPrint(class="token-string">'코드 확인 실패: ${e.message}');
      return false;
    }
  }

  class=class="token-string">"token-comment">// ③ 로그아웃
  Future<void> signOut() async {
    await _auth.signOut();
    _isAuthenticated = false;
    _phoneNumber = null;
    _verificationId = null;
    notifyListeners();
  }
}

class=class="token-string">"token-comment">// pubspec.yaml에 추가: dart_openai: ^4.1.0
import class="token-string">'package:dart_openai/dart_openai.dart';

class=class="token-string">"token-comment">// main.dart에서 초기화 (Firebase 초기화 이후)
OpenAI.apiKey = const String.fromEnvironment(class="token-string">'OPENAI_API_KEY');

class=class="token-string">"token-comment">// ai_chat_service.dart - sendMessage 메서드 교체
Future<void> sendMessage(
  String roomId,
  String text,
  String currentUserId,
  String aiType,
  String aiName,
) async {
  class=class="token-string">"token-comment">// 1. 사용자 메시지 추가
  final userMsg = ChatMessage(
    id: DateTime.now().millisecondsSinceEpoch.toString(),
    roomId: roomId,
    senderId: currentUserId,
    text: text,
    timestamp: DateTime.now(),
    isMe: true,
  );
  _messages.add(userMsg);
  notifyListeners();

  try {
    class=class="token-string">"token-comment">// 2. 대화 히스토리 구성 (최근 10개 메시지)
    final history = _messages.takeLast(10).map((msg) =>
      OpenAIChatCompletionChoiceMessageModel(
        role: msg.isMe
          ? OpenAIChatMessageRole.user
          : OpenAIChatMessageRole.assistant,
        content: [
          OpenAIChatCompletionChoiceMessageContentItemModel.text(msg.text)
        ],
      )
    ).toList();

    class=class="token-string">"token-comment">// 3. OpenAI API 호출
    final response = await OpenAI.instance.chat.create(
      model: class="token-string">'gpt-4o-mini',
      messages: [
        class=class="token-string">"token-comment">// 시스템 프롬프트 (페르소나 설정)
        OpenAIChatCompletionChoiceMessageModel(
          role: OpenAIChatMessageRole.system,
          content: [
            OpenAIChatCompletionChoiceMessageContentItemModel.text(
              getPersonaPrompt(aiName, aiType)
            )
          ],
        ),
        ...history,
      ],
      maxTokens: 300,
      temperature: 0.8,
    );

    final aiText = response.choices.first.message.content?.first.text ?? class="token-string">'';

    class=class="token-string">"token-comment">// 4. AI 응답 메시지 추가
    _messages.add(ChatMessage(
      id: (DateTime.now().millisecondsSinceEpoch + 1).toString(),
      roomId: roomId,
      senderId: class="token-string">'ai_$aiType',
      text: aiText,
      timestamp: DateTime.now(),
      isMe: false,
    ));
    notifyListeners();

  } catch (e) {
    debugPrint(class="token-string">'OpenAI API 오류: $e');
    class=class="token-string">"token-comment">// 오류 시 fallback 메시지
    _messages.add(ChatMessage(
      id: (DateTime.now().millisecondsSinceEpoch + 1).toString(),
      roomId: roomId,
      senderId: class="token-string">'ai_$aiType',
      text: class="token-string">'잠시 연결이 불안정합니다. 조금 후에 다시 말씀해 주세요.',
      timestamp: DateTime.now(),
      isMe: false,
    ));
    notifyListeners();
  }
}