[Feat]: 댓글 수정, 삭제 기능 구현

Author: shihan00321

back/src/main/java/com/back/domain/comment/controller/CommentController.java

@@ -4,7 +4,6 @@
 import com.back.domain.comment.dto.CommentResponse;
 import com.back.domain.comment.enums.CommentSortType;
 import com.back.domain.comment.service.CommentService;
-import com.back.domain.post.dto.PostSummaryResponse;
 import com.back.global.common.ApiResponse;
 import com.back.global.common.PageResponse;
 import io.swagger.v3.oas.annotations.Operation;
@@ -66,35 +65,26 @@ public ApiResponse<PageResponse<CommentResponse>> getPosts(
         return ApiResponse.success(PageResponse.of(responses), "성공적으로 조회되었습니다.", HttpStatus.OK);
     }
 
-//    // 게시글 단건 조회
-//    @GetMapping("/{postId}")
-//    @Operation(summary = "게시글 상세 조회", description = "게시글 ID로 게시글을 조회합니다.")
-//    public ApiResponse<PostDetailResponse> getPost(
-//            @Parameter(description = "조회할 게시글 ID", required = true) @PathVariable Long postId,
-//            @RequestParam Long userId) {
-//        return ApiResponse.success(postService.getPost(userId, postId), "성공적으로 조회되었습니다.", HttpStatus.OK);
-//    }
-//
-//    @PutMapping("/{postId}")
-//    @Operation(summary = "게시글 수정", description = "게시글 ID로 게시글을 수정합니다.")
-//    public ApiResponse<Long> updatePost(
-//            @Parameter(description = "수정할 게시글 ID", required = true) @PathVariable Long postId,
-//            @io.swagger.v3.oas.annotations.parameters.RequestBody(
-//                    description = "수정할 게시글 정보",
-//                    required = true
-//            )
-//            @RequestBody @Valid PostRequest request,
-//            @RequestParam Long userId) {
-//        return ApiResponse.success(postService.updatePost(userId, postId, request), "성공적으로 수정되었습니다.", HttpStatus.OK);
-//    }
-//
-//    @DeleteMapping("/{postId}")
-//    @Operation(summary = "게시글 삭제", description = "게시글 ID로 게시글을 삭제합니다.")
-//    public ApiResponse<Void> deletePost(
-//            @Parameter(description = "삭제할 게시글 ID", required = true) @PathVariable Long postId,
-//            @RequestParam Long userId) {
-//        postService.deletePost(userId, postId);
-//        return ApiResponse.success(null, "성공적으로 삭제되었습니다.", HttpStatus.OK);
-//    }
 
+    @PutMapping("/{commentId}")
+    @Operation(summary = "댓글 수정", description = "자신의 댓글을 수정합니다.")
+    public ApiResponse<Long> updateComment(
+            @Parameter(description = "수정할 댓글 ID", required = true) @PathVariable Long commentId,
+            @io.swagger.v3.oas.annotations.parameters.RequestBody(
+                    description = "수정할 댓글 정보",
+                    required = true
+            )
+            @RequestBody @Valid CommentRequest request,
+            @RequestParam Long userId) {
+        return ApiResponse.success(commentService.updateComment(userId, commentId, request), "성공적으로 수정되었습니다.", HttpStatus.OK);
+    }
+
+    @DeleteMapping("/{commentId}")
+    @Operation(summary = "댓글 삭제", description = "자신의 댓글을 삭제합니다.")
+    public ApiResponse<Void> deletePost(
+            @Parameter(description = "삭제할 댓글 ID", required = true) @PathVariable Long commentId,
+            @RequestParam Long userId) {
+        commentService.deleteComment(userId, commentId);
+        return ApiResponse.success(null, "성공적으로 삭제되었습니다.", HttpStatus.OK);
+    }
 }

back/src/main/java/com/back/domain/comment/entity/Comment.java

@@ -3,12 +3,10 @@
 import com.back.domain.post.entity.Post;
 import com.back.domain.user.entity.User;
 import com.back.global.baseentity.BaseEntity;
+import com.back.global.exception.ApiException;
+import com.back.global.exception.ErrorCode;
 import jakarta.persistence.*;
-import lombok.AllArgsConstructor;
-import lombok.Builder;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-import lombok.Setter;
+import lombok.*;
 import org.hibernate.annotations.ColumnDefault;
 import org.springframework.data.annotation.LastModifiedDate;
 
@@ -24,9 +22,8 @@
 @Entity
 @Table(name = "comments")
 @Getter
-@Setter
-@NoArgsConstructor
-@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PROTECTED)
 @Builder
 public class Comment extends BaseEntity {
 
@@ -56,4 +53,13 @@ public class Comment extends BaseEntity {
 
     @LastModifiedDate
     private LocalDateTime updatedAt;
+
+    public void checkUser(Long userId) {
+        if (!user.getId().equals(userId))
+            throw new ApiException(ErrorCode.UNAUTHORIZED_USER);
+    }
+
+    public void updateContent(String content) {
+        this.content = content;
+    }
 }

back/src/main/java/com/back/domain/comment/service/CommentService.java

@@ -19,12 +19,14 @@
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Sort;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 /**
  * 댓글 관련 비즈니스 로직을 처리하는 서비스.
  */
 @Service
 @RequiredArgsConstructor
+@Transactional(readOnly = true)
 public class CommentService {
 
     private final UserRepository userRepository;
@@ -48,4 +50,20 @@ public Page<CommentResponse> getComments(Long userId, Long postId, Pageable page
         Page<Comment> commentsPage = commentRepository.findCommentsByPostId(postId, pageable);
         return commentsPage.map(CommentMappers.COMMENT_READ::map);
     }
+
+    @Transactional
+    public Long updateComment(Long userId, Long commentId, CommentRequest request) {
+        Comment comment = commentRepository.findById(commentId)
+                .orElseThrow(() -> new ApiException(ErrorCode.COMMENT_NOT_FOUND));
+        comment.checkUser(userId);
+        comment.updateContent(request.content());
+        return comment.getId();
+    }
+
+    public void deleteComment(Long userId, Long commentId) {
+        Comment comment = commentRepository.findById(commentId)
+                .orElseThrow(() -> new ApiException(ErrorCode.COMMENT_NOT_FOUND));
+        comment.checkUser(userId);
+        commentRepository.delete(comment);
+    }
 }