feat(notification): 알림 전체 읽음/삭제 및 테스트 푸시 기능 추가

- 사용자의 모든 알림을 읽음 처리하는 기능 추가
- 알림 soft delete 방식으로 삭제 기능 구현
- 삭제된 알림은 목록에서 제외되도록 조회 로직 수정
- 테스트용 알림 푸시 전송 API (/api/notifications/test-push) 추가

Author: AshtonSW

src/main/java/com/project/Journey/notification/controller/NotificationController.java

@@ -44,4 +44,32 @@ public void read(@PathVariable Long id) {
     public ResponseEntity<Long> countUnread(@AuthenticationPrincipal CustomUserDetails user) {
         return ResponseEntity.ok(notificationService.countUnread(user.getMember().getId()));
     }
+
+    @Operation(summary = "전체 알림 읽음 처리")
+    @PatchMapping("/read-all")
+    public ResponseEntity<Void> readAll(@AuthenticationPrincipal CustomUserDetails user) {
+        notificationService.markAllRead(user.getMember().getId());
+        return ResponseEntity.ok().build();
+    }
+
+    @Operation(summary = "알림 삭제(soft delete)")
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable Long id,
+                                       @AuthenticationPrincipal CustomUserDetails user) {
+        notificationService.delete(id, user.getMember().getId());
+        return ResponseEntity.noContent().build();
+    }
+
+    @Operation(summary = "[테스트] 알림 푸시 전송", description = "알림 전송 테스트용 API입니다.")
+    @PostMapping("/test-push")
+    public void testPush(
+            @AuthenticationPrincipal CustomUserDetails sender,
+            @RequestParam Long receiverId,
+            @RequestParam String type,
+            @RequestParam String message,
+            @RequestParam String link
+    ) {
+        notificationService.testPush(sender.getMember(), receiverId, type, message, link);
+    }
+
 }

src/main/java/com/project/Journey/notification/entity/Notification.java

@@ -44,6 +44,13 @@ public class Notification {
     @Column(nullable = false, updatable = false)
     private LocalDateTime createdAt;
 
+    @Column(nullable = false)
+    private boolean isDeleted = false;
+
+    public void delete() {
+        this.isDeleted = true;
+    }
+
     @PrePersist
     void onCreate() {
         this.createdAt = LocalDateTime.now();

src/main/java/com/project/Journey/notification/repository/NotificationRepository.java

@@ -9,6 +9,8 @@
 
 @Repository
 public interface NotificationRepository extends JpaRepository<Notification, Long> {
-    List<Notification> findByReceiverOrderByCreatedAtDesc(Member receiver);
     long countByReceiverAndReadFalse(Member receiver);
+    List<Notification> findByReceiverAndIsDeletedFalseOrderByCreatedAtDesc(Member receiver);
+    List<Notification> findByReceiverAndReadFalseAndIsDeletedFalse(Member receiver);
+
 }

src/main/java/com/project/Journey/notification/service/NotificationService.java

@@ -52,11 +52,40 @@ public void push(Member receiver,
     @Transactional(readOnly = true)
     public List<NotificationDTO> list(Long receiverId) {
         Member proxy = em.getReference(Member.class, receiverId);
-        return notificationRepository.findByReceiverOrderByCreatedAtDesc(proxy)
-                .stream().map(NotificationDTO::from).toList();
+        return notificationRepository
+                .findByReceiverAndIsDeletedFalseOrderByCreatedAtDesc(proxy)
+                .stream()
+                .map(NotificationDTO::from)
+                .toList();
     }
 
     public void markRead(Long id) {
         notificationRepository.findById(id).ifPresent(Notification::markAsRead);
     }
+
+    public void markAllRead(Long receiverId) {
+        Member proxy = em.getReference(Member.class, receiverId);
+        List<Notification> notifications = notificationRepository.findByReceiverAndReadFalseAndIsDeletedFalse(proxy);
+        notifications.forEach(Notification::markAsRead);
+    }
+
+    public void delete(Long id, Long receiverId) {
+        Notification notification = notificationRepository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException("알림이 존재하지 않습니다"));
+
+        if (!notification.getReceiver().getId().equals(receiverId)) {
+            throw new IllegalStateException("삭제 권한이 없습니다");
+        }
+
+        notification.delete();
+    }
+
+    // 클라 테스트용
+    public void testPush(Member sender, Long receiverId, String type, String message, String link) {
+        Member receiver = em.getReference(Member.class, receiverId);
+
+        NotificationType notificationType = NotificationType.valueOf(type.toUpperCase());
+
+        push(receiver, sender, notificationType, message, link);
+    }
 }