Fix : out of bound 해결

[c5ln]

Fix : UserQuizRepository 특정 메소드 out of bound 해결

Summary by CodeRabbit

• 버그 수정
  • 일부 상황에서 오늘의 퀴즈가 없을 때 발생하던 오류를 방지했습니다. 이제 해당 경우 자동으로 새 일일 퀴즈가 배정되고, 기존 퀴즈가 있으면 그대로 제공됩니다. 예외로 인한 중단 가능성을 줄여 안정성과 연속성을 개선했으며, 드물게 표시되던 오류 메시지 문제도 해소되었습니다.
• 스타일
  • 불필요한 공백을 정리했습니다. 기능과 동작에는 변화가 없습니다.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

• RealQuizService: 오늘 퀴즈 조회 시 리스트 첫 요소 직접 접근을 Optional 기반의 첫 요소 조회로 변경하여 빈 결과 시 null 반환.
• HomeService: getPannelData 내부 공백 줄 제거만 수행. 공개 API 시그니처 변경 없음.

Changes

Cohort / File(s)	Change Summary
RealQuiz 서비스 로직 src/main/java/com/example/cp_main_be/domain/realquiz/service/RealQuizService.java	오늘자 사용자 퀴즈 조회에서 list.get(0) → stream().findFirst().orElse(null)로 변경. 빈 결과 시 예외 가능성 제거, null 분기 유지. 공개 시그니처 변화 없음.
Home 서비스 포맷팅 src/main/java/com/example/cp_main_be/domain/home/service/HomeService.java	getPannelData(User user) 내 불필요한 공백 줄 제거. 기능/흐름 변화 없음.

Sequence Diagram(s)

sequenceDiagram
    participant C as Client
    participant R as RealQuizService
    participant Q as UserQuizRepository
    participant A as DailyQuizAllocator

    C->>R: getTodayQuiz(user)
    R->>Q: findAllTodayUserQuizByUser(user)
    Q-->>R: List<UserQuiz>
    alt 첫 요소 Optional 조회 (변경)
        R->>R: list.stream().findFirst().orElse(null)
    end
    opt 존재함
        R-->>C: existing UserQuiz
    end
    alt 없음 (null)
        R->>A: allocateNewDailyQuiz(user)
        A-->>R: new UserQuiz
        R-->>C: new UserQuiz
    end

    Note over R: 빈 리스트 시 예외 대신 null 처리로 분기

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Feat/퀴즈 재구현 진짜최종 #106: 동일한 RealQuizService 영역 수정으로 로직 경합 가능성.
• feat : 리얼퀴즈 개선, Pannel 정보 API 구현 #112: HomeService.getPannelData와 RealQuizService 모두 동일 지점을 수정하여 충돌 가능성 높음.

Suggested labels

Refactor

Poem

새싹 퀴즈, 톡 톡—빈 바구니면 null이라구요!
예외는 훅, 깡총 피하고 흐름은 고요—
패널은 단정히 줄 맞춰 앉고,
오늘의 문제는 바람처럼 오죠.
깡총깡총 PR 승인 향해—(=^‥^=) 🥕

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📥 Commits

Reviewing files that changed from the base of the PR and between 8b51d7e and a6fcc74.

📒 Files selected for processing (2)

• src/main/java/com/example/cp_main_be/domain/home/service/HomeService.java (0 hunks)
• src/main/java/com/example/cp_main_be/domain/realquiz/service/RealQuizService.java (1 hunks)

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