From 6adaba44737a3b262cea3f9630ee0e1d477d129a Mon Sep 17 00:00:00 2001
From: Sangyoo <tkddbwkd@naver.com>
Date: Tue, 21 Feb 2023 00:14:45 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20=EB=8C=93=EA=B8=80=20=EC=82=AD=EC=A0=9C?=
 =?UTF-8?q?=20=EA=B5=AC=ED=98=84=20#63?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../comment/controller/CommentController.java |  1 +
 .../comment/dto/CommentDetailResponseDto.java |  2 ++
 .../pikcha/domain/comment/entity/Comment.java |  4 ++++
 .../comment/service/CommentService.java       | 21 ++++++++++++++++++-
 4 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/server/src/main/java/com/main36/pikcha/domain/comment/controller/CommentController.java b/server/src/main/java/com/main36/pikcha/domain/comment/controller/CommentController.java
index c77c3002..ea884b48 100644
--- a/server/src/main/java/com/main36/pikcha/domain/comment/controller/CommentController.java
+++ b/server/src/main/java/com/main36/pikcha/domain/comment/controller/CommentController.java
@@ -50,6 +50,7 @@ public ResponseEntity<DataResponseDto<?>> postComment(Member loginUser,
                                 .commentContent(commentPostDto.getCommentContent())
                                 .member(loginUser)
                                 .post(postService.findPostNoneSetView(postId))
+                                .status(Comment.CommentStatus.Alive)
                                 .build()
                 ,commentPostDto.getParentId());
 
diff --git a/server/src/main/java/com/main36/pikcha/domain/comment/dto/CommentDetailResponseDto.java b/server/src/main/java/com/main36/pikcha/domain/comment/dto/CommentDetailResponseDto.java
index 77fb73f8..dc37b180 100644
--- a/server/src/main/java/com/main36/pikcha/domain/comment/dto/CommentDetailResponseDto.java
+++ b/server/src/main/java/com/main36/pikcha/domain/comment/dto/CommentDetailResponseDto.java
@@ -19,6 +19,7 @@ public class CommentDetailResponseDto {
     private String username;
     private String memberPicture;
     private String commentContent;
+    private Comment.CommentStatus status;
     private LocalDateTime createdAt;
     private LocalDateTime modifiedAt;
     private List<CommentDetailResponseDto> children;
@@ -31,6 +32,7 @@ public static CommentDetailResponseDto convertCommentToDto(Comment comment){
                 .username(comment.getMember().getUsername())
                 .memberPicture(comment.getMember().getPicture())
                 .commentContent(comment.getCommentContent())
+                .status(comment.getStatus())
                 .createdAt(comment.getCreatedAt())
                 .modifiedAt(comment.getModifiedAt())
                 .children(new ArrayList<>())
diff --git a/server/src/main/java/com/main36/pikcha/domain/comment/entity/Comment.java b/server/src/main/java/com/main36/pikcha/domain/comment/entity/Comment.java
index e6e8b70c..ed6c924f 100644
--- a/server/src/main/java/com/main36/pikcha/domain/comment/entity/Comment.java
+++ b/server/src/main/java/com/main36/pikcha/domain/comment/entity/Comment.java
@@ -57,6 +57,10 @@ public List<Comment> getChildren(){
         return this.children;
     }
 
+    public void changeStatus(CommentStatus commentStatus) {
+        this.status = commentStatus;
+    }
+
     @Getter
     public enum CommentStatus {
         Alive("생존", "1"),
diff --git a/server/src/main/java/com/main36/pikcha/domain/comment/service/CommentService.java b/server/src/main/java/com/main36/pikcha/domain/comment/service/CommentService.java
index c752940b..4ac29f7d 100644
--- a/server/src/main/java/com/main36/pikcha/domain/comment/service/CommentService.java
+++ b/server/src/main/java/com/main36/pikcha/domain/comment/service/CommentService.java
@@ -59,7 +59,26 @@ public List<Comment> findComments(Post post){
         return customRepository.findCommentByPost(post);
     }
     public void deleteComment(Comment comment) {
-        commentRepository.delete(comment);
+        // 자식이 있는 댓글이라면
+        if(comment.getChildren().size() != 0) {
+            // 삭제 상태로 변경
+            comment.changeStatus(Comment.CommentStatus.Dead);
+        }
+        // 자식이 없는 댓글이라면
+        else {
+            // 삭제 가능한 조상 댓글을 전부 삭제
+            commentRepository.delete(getDeletableAncestorComment(comment));
+        }
+    }
+
+    public Comment getDeletableAncestorComment(Comment comment) {
+        Comment parent = comment.getParent();
+        // 1. 부모 댓글이 존재하고 2. 부모의 자식이 1개이며 3. 부모가 상태가 dead인 경우
+        if(parent != null && parent.getChildren().size() == 1 && parent.getStatus() == Comment.CommentStatus.Dead){
+            // 재귀로 삭제할 조상을 모두 리턴한다
+            return getDeletableAncestorComment(parent);
+        }
+        return comment;
     }
 
     @Transactional(readOnly = true)