[FEAT] #37 댓글 삭제 기능 구현

src/main/java/com/example/be/apiPayload/code/status/ErrorStatus.java

@@ -29,7 +29,8 @@ public enum ErrorStatus implements BaseErrorCode {
     _NOT_USER_POST(HttpStatus.NOT_FOUND, "POST402", "해당 유저의 게시글이 아닙니다."),
 
     //댓글 관련 에러
-    _NOT_FOUND_COMMENT(HttpStatus.NOT_FOUND, "COMMENT404", "해당 댓글을 찾을 수 없습니다.");
+    _NOT_FOUND_COMMENT(HttpStatus.NOT_FOUND, "COMMENT401", "해당 댓글을 찾을 수 없습니다."),
+    _NOT_USER_COMMENT(HttpStatus.NOT_FOUND, "COMMENT402", "해당 유저의 댓글이 아닙니다.");
 
     private final HttpStatus httpStatus;
     private final String code;

src/main/java/com/example/be/repository/CommentRepository.java

@@ -4,6 +4,9 @@
 import com.example.be.domain.Post;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.Optional;
+
 public interface CommentRepository extends JpaRepository<Comment, Long> {
 
+    Optional<Comment> findByIdAndUserId(Long id, Long userId);
 }

src/main/java/com/example/be/service/CommentServiceImpl.java

@@ -70,4 +70,17 @@ public CommonDTO.IsSuccessDTO createComment(CommentDTO.CommentRequestDTO request
         commentRepository.save(comment);
         return CommonDTO.IsSuccessDTO.builder().isSuccess(true).build();
     }
+
+    public CommonDTO.IsSuccessDTO deleteComment(Long commentId, HttpServletRequest request) {
+        User user= getUserFromRequest(request);
+
+        Comment comment = commentRepository.findById(commentId).orElseThrow(()->
+                new CommentHandler(ErrorStatus._NOT_FOUND_COMMENT));
+
+        commentRepository.findByIdAndUserId(commentId, user.getId()).orElseThrow(() ->
+                new CommentHandler(ErrorStatus._NOT_USER_COMMENT));
+
+        commentRepository.delete(comment);
+        return CommonDTO.IsSuccessDTO.builder().isSuccess(true).build();
+    }
 }

src/main/java/com/example/be/web/controller/CommentController.java

@@ -35,4 +35,12 @@ public ApiResponse<CommentDTO.CommentLikeResponseDTO> toggleCommentLike(
             HttpServletRequest request) {
         return ApiResponse.onSuccess(commentLikeService.toggleCommentLike(commentId, request));
     }
+
+    @PostMapping("/{commentId}/delete")
+    @Operation(summary = "댓글 삭제 API", description = "댓글을 삭제합니다.")
+    public ApiResponse<CommonDTO.IsSuccessDTO> deleteComment(
+            @Parameter(description = "댓글 ID") @PathVariable Long commentId,
+            HttpServletRequest request) {
+        return ApiResponse.onSuccess(commentService.deleteComment(commentId, request));
+    }
 }