Merge pull request #94 from HyeJiJUN11/feature/92-comment

feat: 댓글 개수 반환 API 추가

src/main/java/com/potatocake/everymoment/controller/CommentController.java

@@ -13,6 +13,7 @@
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PatchMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -60,4 +61,18 @@ public ResponseEntity<SuccessResponse<Void>> deleteComment(
         return ResponseEntity.ok()
                 .body(SuccessResponse.ok());
     }
+
+    @Operation(summary = "댓글 개수", description = "특정 일기의 댓글 개수를 조회합니다.")
+    @ApiResponse(responseCode = "200", description = "댓글 개수 조회 성공")
+    @GetMapping("/{diaryId}/count")
+    public ResponseEntity<SuccessResponse<Void>> getCommentCount(
+            @Parameter(description = "인증된 사용자 정보", hidden = true)
+            @AuthenticationPrincipal MemberDetails memberDetails,
+            @Parameter(description = "댓글 개수를 조회할 일기 ID", required = true)
+            @PathVariable Long diaryId) {
+        Long commentCount = commentService.getCommentCountByDiary(diaryId);
+
+        return ResponseEntity.ok()
+                .body(SuccessResponse.ok(commentCount));
+    }
 }

src/main/java/com/potatocake/everymoment/dto/response/CommentResponse.java

@@ -8,6 +8,7 @@
 @Builder
 public class CommentResponse {
     private Long id;
+    private Long memberId;
     private CommentFriendResponse commentFriendResponse;
     private String content;
     private LocalDateTime createdAt;

src/main/java/com/potatocake/everymoment/repository/CommentRepository.java

@@ -7,4 +7,6 @@
 
 public interface CommentRepository extends JpaRepository<Comment, Long> {
     Page<Comment> findAllByDiaryId(Long diaryId, Pageable pageable);
+
+    Long countByDiaryId(Long diaryId);
 }

src/main/java/com/potatocake/everymoment/service/CommentService.java

@@ -121,10 +121,14 @@ private CommentFriendResponse convertToCommentFriendResponseDTO(Member member) {
     private CommentResponse convertToCommentResponseDTO(Comment comment) {
         return CommentResponse.builder()
                 .id(comment.getId())
+                .memberId(comment.getMember().getId())
                 .commentFriendResponse(convertToCommentFriendResponseDTO(comment.getMember()))
                 .content(comment.getContent())
                 .createdAt(comment.getCreateAt())
                 .build();
     }
 
+    public Long getCommentCountByDiary(Long diaryId) {
+        return commentRepository.countByDiaryId(diaryId);
+    }
 }