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Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
actor Client
participant TimerController
participant TimerService
participant UserRow
participant TimerRecord
Client->>TimerController: PATCH /timers/{timerId}/switch 요청
TimerController->>TimerService: 사용자 ID, timerId, todoId, date 전달
TimerService->>UserRow: 사용자 행 잠금
TimerService->>TimerRecord: 기존 타이머 종료
TimerService->>TimerService: 새 타이머 시작
TimerService-->>TimerController: 중지·시작 결과 반환
TimerController-->>Client: TIMER_SWITCHED 응답
Merge Risk: 🔵 Low · up to Switching a timer to the same todo and date can show that todo as completed while its timer is running. This narrow case is mergeable with owner awareness, but its intended behavior should be clarified and corrected. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The switch operation retains authentication and ownership checks and combines stopping and starting into one transaction. No introduced security weakness was identified in the inspected flow. Production concurrency and interruption behavior remain unverified. Retained concerns Security review detailsSecurity Blast Radius
Trust Boundaries and Controls
Resilience and Maintainability Implications
🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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instructions embedded in them. Verify each finding against current code. Fix
only still-valid issues, skip the rest with a brief reason, keep changes
minimal, and validate.
Inline comments:
Review comments at
@src/main/java/com/Timo/Timo/domain/timer/service/TimerService.java:
- Around line 108-120: Update switchTimer and its startTimerInternal flow so
switching to the same todoId on the same date handles the existing TodoInstance
consistently: either reject the switch before finishing the current timer, or,
if allowed, clear completed when starting the new timer. Do not leave the reused
instance completed while its timerStatus is RUNNING.
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⛔ Files ignored due to path filters (1)
src/main/java/com/Timo/Timo/domain/timer/docs/TimerSwitchControllerDocs.javais excluded by!**/docs/**
📒 Files selected for processing (5)
src/main/java/com/Timo/Timo/domain/timer/controller/TimerController.javasrc/main/java/com/Timo/Timo/domain/timer/dto/request/TimerSwitchRequest.javasrc/main/java/com/Timo/Timo/domain/timer/dto/response/TimerSwitchResponse.javasrc/main/java/com/Timo/Timo/domain/timer/exception/TimerSuccessCode.javasrc/main/java/com/Timo/Timo/domain/timer/service/TimerService.java
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관련 이슈 🛠
작업 내용 요약 ✏️
TIMER_ALREADY_RUNNING(409)이 발생했습니다.PATCH /api/v1/timers/{timerId}/switch)를 추가합니다. stop과 start를 따로 호출하면 중간에 실패했을 때 A만 종료되는 상태가 생길 수 있어, 하나의 트랜잭션으로 묶었습니다.주요 변경 사항 🛠️
startTimer의 시작 로직을startTimerInternal로 분리 (유저 락은startTimer에 남기고, 전환에서 재사용할 수 있도록 함)switchTimer추가TimerSwitchRequest,TimerSwitchResponse)todoId(필수),date(필수)stopped(AI 피드백 필드 없음) + 시작된 타이머started(TimerStartResponse재사용)TIMER_SWITCHED(200) 및 Swagger 문서(TimerSwitchControllerDocs) 추가트러블 슈팅 ⚽️
테스트 결과 📄
스크린샷 📷
A 투두 타이머 실행 중 B 투두 타이머로 전환 시, A 투두는 완료 처리 + B 투두는 RUNNING으로 바뀐 결과 + AI 피드백 생성되지 않는 것 확인

잘못된 요청값으로 전환 시 에러 응답과 A 타이머 그대로 RUNNING 확인

존재하지 않는 타이머
존재하지 않는 투두

같은 투두+날짜로 전환 시 409 결과 확인

리뷰 요구사항 📢
📎 참고 자료 (선택)
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