[BE#441] 친구 검색기능 상태코드

BE/src/mates/mates.controller.ts

@@ -97,6 +97,31 @@ export class MatesController {
     return { statusCode: 201, message: '친구가 성공적으로 구독되었습니다.' };
   }
 
+  @Get('search')
+  @UseGuards(AccessTokenGuard)
+  @ApiBearerAuth()
+  @ApiCreatedResponse({
+    description: '닉네임을 검색',
+  })
+  @ApiBody({
+    schema: {
+      properties: {
+        following_nickname: {
+          type: 'string',
+          description: '검색할 닉네임',
+          example: '어린콩',
+        },
+      },
+    },
+  })
+  @ApiOperation({ summary: '친구 검색하기 (완)' })
+  async findMate(
+    @User() user: UsersModel,
+    @Query('nickname') nickname: string,
+  ): Promise<object> {
+    return this.matesService.findMate(user, nickname);
+  }
+
   @Delete('')
   @UseGuards(AccessTokenGuard)
   @ApiBearerAuth()

BE/src/mates/mates.service.spec.ts

@@ -149,4 +149,36 @@ describe('MatesService', () => {
       following_primary_category: null,
     });
   });
+
+  describe('.findMate()', () => {
+    it('유효한 데이터가 주어지면 20000코드를 준다.', async () => {
+      const result = await service.findMate(user, '어린콩3');
+      expect(result).toStrictEqual({
+        statusCode: 20000,
+        image_url: null,
+      });
+    });
+
+    it('자신을 검색하면 20001코드를 준다.', async () => {
+      const result = await service.findMate(user, '어린콩');
+      expect(result).toStrictEqual({
+        statusCode: 20001,
+        image_url: null,
+      });
+    });
+
+    it('이미 친구 관계인 유저를 검색하면 20002코드를 준다.', async () => {
+      const result = await service.findMate(user, '어린콩2');
+      expect(result).toStrictEqual({
+        statusCode: 20002,
+        image_url: null,
+      });
+    });
+
+    it('존재하지 않는 유저를 검색하면 에러를 던진다.', async () => {
+      expect(service.findMate(user, '어린콩4')).rejects.toThrow(
+        NotFoundException,
+      );
+    });
+  });
 });

BE/src/mates/mates.service.ts

@@ -141,6 +141,37 @@ export class MatesService {
     return this.entityToDto(result);
   }
 
+  async findMate(user: UsersModel, following_nickname: string) {
+    let statusCode = 20000;
+    const following = await this.userRepository.findOne({
+      where: { nickname: following_nickname },
+    });
+
+    if (user.id === following?.id) {
+      statusCode = 20001; //자신을 친구 추가 할 수 없습니다.
+    }
+
+    if (!user || !following) {
+      throw new NotFoundException('해당 유저는 존재하지 않습니다.');
+    }
+
+    const isExist = await this.matesRepository.findOne({
+      where: { follower_id: user, following_id: following },
+    });
+
+    if (isExist) {
+      statusCode = 20002; //이미 친구 관계입니다.
+    }
+
+    return {
+      statusCode,
+      image_url: getImageUrl(
+        this.configService.get(ENV.CDN_ENDPOINT),
+        following.image_url,
+      ),
+    };
+  }
+
   async deleteMate(user: UsersModel, following_id: number): Promise<void> {
     const following = await this.userRepository.findOne({
       where: { id: following_id },

BE/test/mock-table/users.json

@@ -4,7 +4,7 @@
     "nickname": "어린콩",
     "auth_type": "google",
     "email": "[email protected]",
-    "image_url": "image.png"
+    "image_url": null
   },
   {
     "id": 2,