[BE/#94] PATCH /posts/{id} API 구현

BE/src/main.ts

@@ -16,6 +16,7 @@ async function bootstrap() {
       ],
     }),
   });
+
   app.useLogger(app.get(WINSTON_MODULE_NEST_PROVIDER));
   app.useGlobalPipes(new ValidationPipe());
   setupSwagger(app);

BE/src/post/post.controller.ts

@@ -1,15 +1,21 @@
 import {
+  Body,
   Controller,
   Get,
+  HttpCode,
   HttpException,
   Param,
-  Post,
+  Patch,
+  Req,
+  Res,
+   Post,
   UploadedFiles,
   UseInterceptors,
   ValidationPipe,
 } from '@nestjs/common';
 import { PostService } from './post.service';
 import { ApiOperation, ApiTags } from '@nestjs/swagger';
+import { UpdatePostDto } from './postUpdateDto';
 import { FilesInterceptor } from '@nestjs/platform-express';
 import { CreatePostDto } from './createPost.dto';
 import { MultiPartBody } from '../utils/multiPartBody.decorator';
@@ -56,4 +62,18 @@ export class PostController {
       throw new HttpException('서버 오류입니다.', 500);
     }
   }
+
+  @Patch('/:id')
+  @ApiOperation({ summary: 'fix post context', description: '게시글 수정' })
+  async postModify(@Param('id') id: number, @Body() body: UpdatePostDto) {
+    const isFixed = await this.postService.updatePostById(id, body);
+
+    if (isFixed) {
+      return HttpCode(200);
+    } else if (isFixed === false) {
+      throw new HttpException('게시글이 존재하지 않습니다.', 404);
+    } else {
+      throw new HttpException('서버 오류입니다.', 500);
+    }
+  }
 }

BE/src/post/post.service.ts

@@ -1,10 +1,12 @@
-import { Injectable } from '@nestjs/common';
+import { HttpException, Injectable } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { PostEntity } from '../entities/post.entity';
 import { Repository } from 'typeorm';
+import { UpdatePostDto } from './postUpdateDto';
+import { validate } from 'class-validator';
+import { PostImageEntity } from 'src/entities/postImage.entity';
 import { S3Handler } from '../utils/S3Handler';
 import { UserEntity } from '../entities/user.entity';
-import { PostImageEntity } from '../entities/postImage.entity';
 
 @Injectable()
 export class PostService {
@@ -34,7 +36,6 @@ export class PostService {
       };
       posts.push(post);
     });
-    // console.log(posts);
     return posts;
   }
 
@@ -59,6 +60,49 @@ export class PostService {
     }
   }
 
+  async changeImages(postId: number, images: string[]) {
+    try {
+      await this.postImageRepository.delete({ post_id: postId });
+      images.forEach(async (image) => {
+        await this.postImageRepository.save({
+          post_id: postId,
+          image_url: image,
+        });
+      });
+    } catch {
+      throw new HttpException('서버 오류입니다.', 500);
+    }
+  }
+
+  async changeExceptImages(postId: number, updatePostDto: UpdatePostDto) {
+    try {
+      await this.postRepository.update({ id: postId }, updatePostDto);
+    } catch {
+      throw new HttpException('서버 오류입니다.', 500);
+    }
+  }
+
+  async updatePostById(postId: number, updatePostDto: UpdatePostDto) {
+    const isDataExists = await this.postRepository.findOne({
+      where: { id: postId },
+    });
+
+    const isChangingImages = 'images' in updatePostDto; // images 가 존재여부 확인
+
+    try {
+      if (!isDataExists) {
+        return false;
+      } else if (!isChangingImages) {
+        await this.changeExceptImages(postId, updatePostDto);
+        return true;
+      } else {
+        await this.changeExceptImages(postId, updatePostDto);
+        await this.changeImages(postId, updatePostDto.images);
+        return true;
+      }
+    } catch {
+      return null;
+
   async uploadImages(files: Express.Multer.File[]): Promise<string[]> {
     const fileLocation: Array<string> = [];
     for (const file of files) {

BE/src/post/postUpdateDto.ts

@@ -0,0 +1,20 @@
+import { IsArray, IsNumber, IsOptional, IsString } from 'class-validator';
+
+export class UpdatePostDto {
+  @IsOptional() // 이 필드는 선택적으로 업데이트할 수 있도록 설정
+  @IsString()
+  title?: string;
+
+  @IsOptional()
+  @IsString()
+  contents?: string;
+
+  @IsOptional()
+  @IsNumber() // 전화번호 형식 검증
+  price?: number;
+
+  @IsArray()
+  @IsOptional()
+  @IsString({ each: true })
+  images?: string[];
+}