[feat] 알림: 전체 삭제 기능 추가 #292 (#302)

* Revert "chore: initData용 이미지 추가"

This reverts commit ef30eef.

* .

* chore: 수정사항 없음

* feat: MyHistoryPostItemDto에 상세 정보 필드 추가 및 매핑 로직 업데이트

* refactor: 게시글 좋아요 알림 메시지에 게시글 제목 추가

* chore: 수정사항 없음

* feat: NotificationRepository에 사용자별 알림 전체 삭제 기능 추가

* feat: NotificationService에 사용자 모든 알림 삭제 기능 추가

* feat: NotificationController에 모든 알림을 삭제하는 DELETE /me/notifications 엔드포인트 구현

* test: NotificationControllerTest에 알림 전체 삭제 테스트 케이스 구현

Author: MEOHIN

src/main/java/com/back/domain/notification/controller/NotificationController.java

@@ -12,6 +12,7 @@
 import jakarta.validation.Valid;
 import jakarta.validation.constraints.Max;
 import jakarta.validation.constraints.Min;
+import java.time.LocalDateTime;
 import lombok.RequiredArgsConstructor;
 import org.springframework.format.annotation.DateTimeFormat;
 import org.springframework.security.access.prepost.PreAuthorize;
@@ -20,8 +21,6 @@
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 
-import java.time.LocalDateTime;
-
 @RestController
 @RequestMapping("/me")
 @RequiredArgsConstructor
@@ -120,7 +119,17 @@ public RsData<NotificationGoResponseDto> goPostLink(
             @PathVariable("id") Long notificationId
     ) {
         Long userId = principal.getId();
-        var body = notificationService.markAsReadAndGetPostLink(userId, notificationId);
+        NotificationGoResponseDto body = notificationService.markAsReadAndGetPostLink(userId, notificationId);
         return RsData.successOf(body);
     }
+
+    @DeleteMapping("/notifications")
+    @Operation(summary = "Delete all notifications", description = "Remove every notification belonging to the authenticated user")
+    public RsData<Void> deleteNotifications(
+            @AuthenticationPrincipal SecurityUser principal
+    ) {
+        Long userId = principal.getId();
+        notificationService.deleteAll(userId);
+        return RsData.of(200, "cleared");
+    }
 }

src/main/java/com/back/domain/notification/repository/NotificationRepository.java

@@ -3,6 +3,7 @@
 import com.back.domain.notification.entity.Notification;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
@@ -37,4 +38,8 @@ List<Notification> findMyNotificationsAfter(@Param("userId") Long userId,
          where n.id = :id and n.user.id = :userId
     """)
     Notification findByIdAndUserId(@Param("id") Long id, @Param("userId") Long userId);
+
+    @Modifying(clearAutomatically = true, flushAutomatically = true)
+    long deleteByUser_Id(Long userId);
+
 }

src/main/java/com/back/domain/notification/service/NotificationService.java

@@ -115,4 +115,9 @@ public void sendNotification(User user, Post post, NotificationType type, String
         }
       }
     }
+
+    @Transactional
+    public void deleteAll(Long userId) {
+        notificationRepository.deleteByUser_Id(userId);
+    }
 }

src/test/java/com/back/domain/notification/controller/NotificationControllerTest.java

@@ -37,8 +37,10 @@
 
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.BDDMockito.given;
+import static org.mockito.BDDMockito.willDoNothing;
 import static org.mockito.Mockito.verify;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.asyncDispatch;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.patch;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
@@ -249,4 +251,21 @@ void goPostLink() throws Exception {
 
         verify(notificationService).markAsReadAndGetPostLink(principal.getId(), 999L);
     }
+    @Test
+    @DisplayName("Delete notifications")
+    void deleteNotifications() throws Exception {
+        SecurityUser principal = createPrincipal(17L);
+
+        willDoNothing().given(notificationService).deleteAll(principal.getId());
+
+        mockMvc.perform(delete("/me/notifications")
+                        .with(withPrincipal(principal))
+                        .accept(MediaType.APPLICATION_JSON))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.code").value(200))
+                .andExpect(jsonPath("$.message").value("cleared"))
+                .andExpect(jsonPath("$.data").doesNotExist());
+
+        verify(notificationService).deleteAll(principal.getId());
+    }
 }