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Refactor: board 도메인 리팩토링 (#245) #271

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Merged
merged 2 commits into from
Oct 14, 2025
Merged

Refactor: board 도메인 리팩토링 (#245) #271

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93d6e96
Ref: comment 도메인 리팩토링
joyewon0705 Oct 14, 2025
7831761
Ref: post 도메인 리팩토링
joyewon0705 Oct 14, 2025
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4 changes: 2 additions & 2 deletions src/main/java/com/back/domain/board/comment/controller/CommentController.java
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Original file line number Diff line number Diff line change
Expand Up @@ -41,15 +41,15 @@ public ResponseEntity<RsData<CommentResponse>> createComment(
));
}

// 댓글 다건 조회
// 댓글 목록 조회
@GetMapping
public ResponseEntity<RsData<PageResponse<CommentListResponse>>> getComments(
@PathVariable Long postId,
@AuthenticationPrincipal CustomUserDetails user,
@PageableDefault(sort = "createdAt", direction = Sort.Direction.ASC) Pageable pageable
) {
Long userId = (user != null) ? user.getUserId() : null;
PageResponse<CommentListResponse> response = commentService.getComments(postId, userId, pageable);
PageResponse<CommentListResponse> response = commentService.getComments(postId, pageable, userId);
return ResponseEntity
.status(HttpStatus.OK)
.body(RsData.success(
Expand Down
20 changes: 18 additions & 2 deletions src/main/java/com/back/domain/board/comment/controller/docs/CommentControllerDocs.java
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Expand Up @@ -357,10 +357,18 @@ ResponseEntity<RsData<PageResponse<CommentListResponse>>> getComments(
),
@ApiResponse(
responseCode = "404",
description = "존재하지 않는 게시글 또는 댓글",
description = "존재하지 않는 사용자/게시글/댓글",
content = @Content(
mediaType = "application/json",
examples = {
@ExampleObject(name = "존재하지 않는 사용자", value = """
{
"success": false,
"code": "USER_001",
"message": "존재하지 않는 사용자입니다.",
"data": null
}
"""),
@ExampleObject(name = "존재하지 않는 게시글", value = """
{
"success": false,
Expand Down Expand Up @@ -473,10 +481,18 @@ ResponseEntity<RsData<CommentResponse>> updateComment(
),
@ApiResponse(
responseCode = "404",
description = "존재하지 않는 게시글 또는 댓글",
description = "존재하지 않는 사용자/게시글/댓글",
content = @Content(
mediaType = "application/json",
examples = {
@ExampleObject(name = "존재하지 않는 사용자", value = """
{
"success": false,
"code": "USER_001",
"message": "존재하지 않는 사용자입니다.",
"data": null
}
"""),
@ExampleObject(name = "존재하지 않는 게시글", value = """
{
"success": false,
Expand Down
2 changes: 1 addition & 1 deletion src/main/java/com/back/domain/board/comment/controller/docs/CommentLikeControllerDocs.java
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Expand Up @@ -29,7 +29,7 @@ public interface CommentLikeControllerDocs {
examples = @ExampleObject(value = """
{
"success": true,
"code": "SUCCESS_201",
"code": "SUCCESS_200",
"message": "댓글 좋아요가 등록되었습니다.",
"data": {
"commentId": 25,
Expand Down
20 changes: 19 additions & 1 deletion src/main/java/com/back/domain/board/comment/entity/Comment.java
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Original file line number Diff line number Diff line change
Expand Up @@ -58,7 +58,7 @@ public static Comment createRoot(Post post, User user, String content) {
/** 대댓글 생성 */
public static Comment createChild(Post post, User user, String content, Comment parent) {
Comment comment = new Comment(post, user, content, parent);
parent.getChildren().add(comment);
parent.addChildren(comment);
return comment;
}

Expand All @@ -71,6 +71,14 @@ public void removeLike(CommentLike like) {
this.commentLikes.remove(like);
}

public void addChildren(Comment child) {
this.children.add(child);
}

public void removeChildren(Comment child) {
this.children.remove(child);
}

// -------------------- 비즈니스 메서드 --------------------
/** 댓글 내용 수정 */
public void update(String content) {
Expand All @@ -88,4 +96,14 @@ public void decreaseLikeCount() {
this.likeCount--;
}
}

// -------------------- 헬퍼 메서드 --------------------
/** 댓글 삭제 시 연관관계 정리 */
public void remove() {
this.post.removeComment(this);
this.user.removeComment(this);
if (this.parent != null) {
this.parent.removeChildren(this);
}
}
}
7 changes: 7 additions & 0 deletions src/main/java/com/back/domain/board/comment/entity/CommentLike.java
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Original file line number Diff line number Diff line change
Expand Up @@ -29,4 +29,11 @@ public CommentLike(Comment comment, User user) {
comment.addLike(this);
user.addCommentLike(this);
}

// -------------------- 헬퍼 메서드 --------------------
/** 댓글 좋아요 삭제 시 연관관계 정리 */
public void remove() {
this.comment.removeLike(this);
this.user.removeCommentLike(this);
}
}
36 changes: 14 additions & 22 deletions src/main/java/com/back/domain/board/comment/service/CommentLikeService.java
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Expand Up @@ -26,11 +26,10 @@ public class CommentLikeService {

/**
* 댓글 좋아요 서비스
* 1. User 조회
* 2. Comment 조회
* 3. 이미 존재하는 경우 예외 처리
* 4. CommentLike 저장 및 likeCount 증가
* 5. 알림 이벤트 발행 (자기 글이 아닐 경우)
*
* @param commentId 댓글 ID
* @param userId 사용자 ID
* @return 댓글 좋아요 응답 DTO
*/
public CommentLikeResponse likeComment(Long commentId, Long userId) {
// User 조회
Expand All @@ -41,21 +40,20 @@ public CommentLikeResponse likeComment(Long commentId, Long userId) {
Comment comment = commentRepository.findById(commentId)
.orElseThrow(() -> new CustomException(ErrorCode.COMMENT_NOT_FOUND));

// 이미 좋아요를 누른 경우 예외
// 이미 좋아요한 경우 예외
if (commentLikeRepository.existsByUserIdAndCommentId(userId, commentId)) {
throw new CustomException(ErrorCode.COMMENT_ALREADY_LIKED);
}

// 좋아요 수 증가
// CommentLike 생성 및 좋아요 수 증가 처리
comment.increaseLikeCount();

// CommentLike 저장 및 응답 반환
commentLikeRepository.save(new CommentLike(comment, user));

// 댓글 좋아요 이벤트 발행 (자기 댓글이 아닐 때만)
if (!comment.getUser().getId().equals(userId)) {
eventPublisher.publishEvent(
new CommentLikedEvent(
userId, // 좋아요 누른 사람
userId, // 좋아요한 사용자
comment.getUser().getId(), // 댓글 작성자
comment.getPost().getId(), // 게시글 ID
comment.getId(),
Expand All @@ -69,10 +67,10 @@ public CommentLikeResponse likeComment(Long commentId, Long userId) {

/**
* 댓글 좋아요 취소 서비스
* 1. User 조회
* 2. Comment 조회
* 3. CommentLike 조회
* 4. CommentLike 삭제 및 likeCount 감소
*
* @param commentId 댓글 ID
* @param userId 사용자 ID
* @return 댓글 좋아요 응답 DTO
*/
public CommentLikeResponse cancelLikeComment(Long commentId, Long userId) {
// User 조회
Expand All @@ -87,17 +85,11 @@ public CommentLikeResponse cancelLikeComment(Long commentId, Long userId) {
CommentLike commentLike = commentLikeRepository.findByUserIdAndCommentId(userId, commentId)
.orElseThrow(() -> new CustomException(ErrorCode.COMMENT_LIKE_NOT_FOUND));

// 연관관계 제거
comment.removeLike(commentLike);
user.removeCommentLike(commentLike);

// CommentLike 삭제
// CommentLike 삭제 및 좋아요 수 감소 처리
commentLike.remove();
commentLikeRepository.delete(commentLike);

// 좋아요 수 감소
comment.decreaseLikeCount();

// 응답 반환
return CommentLikeResponse.from(comment);
}
}
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