[#72] 댓글/게시글 삭제시 count 줄이기

server/src/comment/v1/comment-v1.service.ts

@@ -267,9 +267,24 @@ export class CommentV1Service {
     userId: number;
     commentId: number;
   }): Promise<void> {
-    await this.commentRepository.delete({
-      id: commentId,
-      userId,
+    const comment = await this.commentRepository.findOne({
+      where: { id: commentId },
+    });
+
+    const transaction = await this.commentRepository.getTransaction();
+
+    await transaction.transaction(async (transactionalEntityManager) => {
+      await transactionalEntityManager.delete('Comment', {
+        id: commentId,
+        userId,
+      });
+
+      await transactionalEntityManager.decrement(
+        'Post',
+        { id: comment.postId },
+        'commentCount',
+        1,
+      );
     });
   }
 }

server/src/entity/comment/comment.repository.ts

@@ -1,6 +1,10 @@
-import { Repository } from 'typeorm';
+import { EntityManager, Repository } from 'typeorm';
 import { CustomRepository } from 'src/db/typeorm-ex.decorator';
 import { Comment } from './comment.entity';
 
 @CustomRepository(Comment)
-export class CommentRepository extends Repository<Comment> {}
+export class CommentRepository extends Repository<Comment> {
+  async getTransaction(): Promise<EntityManager> {
+    return this.manager;
+  }
+}

server/src/entity/post/post.repository.ts

@@ -1,6 +1,10 @@
-import { Repository } from 'typeorm';
+import { EntityManager, Repository } from 'typeorm';
 import { CustomRepository } from 'src/db/typeorm-ex.decorator';
 import { Post } from './post.entity';
 
 @CustomRepository(Post)
-export class PostRepository extends Repository<Post> {}
+export class PostRepository extends Repository<Post> {
+  async getTransaction(): Promise<EntityManager> {
+    return this.manager;
+  }
+}

server/src/post/v1/post-v1.service.ts

@@ -396,6 +396,15 @@ export class PostV1Service {
       throw new ForbiddenException('권한이 없습니다.');
     }
 
-    await this.postRepository.delete({ id: postId });
+    const transaction = await this.postRepository.getTransaction();
+    await transaction.transaction(async (manager) => {
+      await manager.delete('Like', { postId });
+      await manager.decrement(
+        'Meeting',
+        { id: post.meetingId },
+        'postCount',
+        1,
+      );
+    });
   }
 }