Fix/panel npe 버그 수정

[c5ln]

Fix/panel npe 버그 수정

UserQuiz out of bound 문제 해결

Summary by CodeRabbit

• 버그 수정
  • 오늘 작성한 일기나 퀴즈가 없는 경우 발생하던 예외를 방지하여 홈 화면 로딩 실패 이슈를 해결했습니다.
• 개선
  • 오늘 날짜 기준으로 일기/퀴즈 데이터를 더욱 정확하게 조회하도록 로직을 개선했습니다.
  • 데이터가 없을 때도 자연스럽게 처리되어 빈 화면이나 오류 대신 안정적으로 화면이 표시됩니다.
  • 전반적인 안정성과 사용자 경험(UX)을 향상했습니다.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

HomeService now retrieves today’s diary and quiz via date-scoped repository queries and uses stream().findFirst().orElse(null) instead of list.get(0). DiaryRepository adds a JPQL method findTodayDiaryByUser(User, LocalDateTime, LocalDateTime) using createdAt and BETWEEN for filtering.

Changes

Cohort / File(s)	Summary
Home service retrieval hardening src/main/java/com/example/cp_main_be/domain/home/service/HomeService.java	Replaced list index access with stream().findFirst().orElse(null) for today’s diary and quiz; switched diary source to DiaryRepository.findTodayDiaryByUser with start/end of day bounds; preserved existing null checks and completion logic.
Diary repository date-range query src/main/java/com/example/cp_main_be/domain/mission/diary/domain/repository/DiaryRepository.java	Added LocalDateTime import and new JPQL method findTodayDiaryByUser(User, LocalDateTime, LocalDateTime) filtering by createdAt BETWEEN startDate and endDate; no changes to existing methods.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  actor U as User
  participant HS as HomeService
  participant DR as DiaryRepository
  participant QR as QuizRepository

  U->>HS: getHomeData()
  HS->>DR: findTodayDiaryByUser(user, startOfDay, endOfDay)
  DR-->>HS: List<Diary>
  HS->>HS: diary = list.stream().findFirst().orElse(null)

  HS->>QR: findAllTodayUserQuizByUser(user, startOfDay, endOfDay)
  QR-->>HS: List<UserQuiz>
  HS->>HS: quiz = list.stream().findFirst().orElse(null)

  alt diary or quiz is null
    HS->>HS: handle nulls in completion logic
  else both present
    HS->>HS: proceed with existing logic
  end
  HS-->>U: Home data response

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related issues

• Fix : panel NPE 버그 수정 , Diary에 예외처리 #117 — Adds repository method and null-safe retrieval to prevent diary NPE in HomeService, matching this change.

Possibly related PRs

• 97 요청 사항 반영 #98 — Touches Diary domain/repository structure; related to adding a new DiaryRepository query here.
• feat : 리얼퀴즈 개선, Pannel 정보 API 구현 #112 — Earlier today-scoped queries introduced; this PR aligns by using findFirst() instead of get(0).

Suggested labels

Refactor

Poem

토끼는 깡충, 날짜를 딱! 오늘만 골라본다
리스트 첫째 말고, 살포시 findFirst 한다
비어도 괜찮아, null이면 조심하자
일기와 퀴즈 모아, 집으로 가져가자
깡총깡총 코드도 오늘처럼 단단하다 🐇✨

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📥 Commits

Reviewing files that changed from the base of the PR and between 3e1d3a0 and ad5689b.

📒 Files selected for processing (2)

• src/main/java/com/example/cp_main_be/domain/home/service/HomeService.java (1 hunks)
• src/main/java/com/example/cp_main_be/domain/mission/diary/domain/repository/DiaryRepository.java (2 hunks)

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• Commit unit tests in branch fix/panel-npe-버그-수정

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