복습 대상 URL 이메일 전송 스케줄러 구현

[jhan0121]

🚀 작업 내용

1. 스케줄링

• @EnableScheduling을 통해 스케줄링 활성화
• @Scheduled(cron = "0 0 8 * * *") 어노테이션을 사용하여 매일 오전 8시 실행

2. 비동기 처리

• @EnableAsync를 통해 비동기 처리 활성화
• @Async 어노테이션을 사용하여 이메일 전송을 비동기로 처리
• 스케줄러 실행 지연을 방지하기 위해 이메일 전송 작업을 별도 스레드에서 수행

3. 이메일 본문 렌더링

• Thymeleaf 템플릿 엔진을 사용하여 HTML 이메일 본문 생성
• 유저별 복습 대상 URL 목록을 템플릿에 바인딩

4. 전체 처리 흐름

[Scheduler 실행 (08:00)]
        ↓
[오늘 날짜 기준 복습 대상 ReviewCycle 조회]
        ↓
[유저별로 복습 URL 그룹핑]
        ↓
[각 유저별 HTML 렌더링 + 이메일 전송 (비동기)]

📸 이슈 번호

• close 복습 대상 URL 이메일 전송 스케줄러 구현 #16

✍ 궁금한 점

• 이후에 사용자가 받고 싶은 시간을 설정하는 기능이 추가된다면 변화가 얼마나 생길지

[github-actions]

🧪 테스트 커버리지 리포트

Overall Project	98.02%	🍏
Files changed	100%	🍏

File	Coverage
NotificationHistory.java	100%	🍏
ReviewCycle.java	100%	🍏
Review.java	100%	🍏
MemberController.java	100%	🍏
NotificationHistoryService.java	100%	🍏
ReviewCycleService.java	100%	🍏
ReviewService.java	100%	🍏
EmailSender.java	100%	🍏
ReviewEmailSender.java	100%	🍏
DeviceAuthEmailSender.java	100%	🍏
DeviceIdentifier.java	100%	🍏
Member.java	100%	🍏
ActivationExpiredDateTime.java	100%	🍏
Device.java	100%	🍏
Email.java	100%	🍏

[Copilot]

Pull request overview

This PR implements a scheduled email notification system that sends daily review reminders to users at 8 AM. The implementation introduces a scheduler using Spring's @Scheduled annotation, refactors the email service into more focused components, and adds a Member relationship to the Review entity to support user-specific email notifications.

Key Changes:

• Implemented ReviewEmailSender with scheduled execution at 8 AM daily using cron expressions
• Added ReviewCycleService to query and group review cycles by user email
• Refactored email functionality by splitting EmailService into EmailSender, DeviceAuthEmailSender, and ReviewEmailSender for better separation of concerns

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 11 comments.

Show a summary per file

File	Description
RecyclestudyApplication.java	Added @EnableScheduling to enable Spring's scheduling functionality
Review.java	Added Member relationship to associate reviews with users for targeted notifications
ReviewService.java	Updated to create reviews with associated member from device
ReviewCycleRepository.java	Added findAllByScheduledAt query method to retrieve scheduled review cycles
ReviewCycleService.java	New service to fetch and group review cycles by user for email notifications
ReviewSendInput.java	Input DTO for querying review cycles by scheduled date and time
ReviewSendOutput.java	Output DTO that groups review URLs by user email for batch email sending
EmailSender.java	Extracted core email sending logic into reusable component
DeviceAuthEmailSender.java	Refactored device authentication email logic from original EmailService
ReviewEmailSender.java	New scheduled service that sends daily review reminder emails to users
review_email.html	Thymeleaf template for review reminder email with list of URLs to review
Test files	Updated tests to reflect Review's new Member dependency and added comprehensive test coverage for new email sender components

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.