[QA-335] 카카오 로그인 api 생성

src/auth/dtos/kakao-login.dto.ts

@@ -0,0 +1,3 @@
+import { CreateOAuthDto } from './oauth-login.dto';
+
+export class KakaoLoginDto extends CreateOAuthDto {}

src/auth/dtos/oauth-login.dto.ts

@@ -0,0 +1,3 @@
+export class CreateOAuthDto {
+  authorizationToken: string;
+}

src/auth/dtos/request/kakao-login.request.dto.ts

@@ -0,0 +1,3 @@
+import { OAuthLoginRequest } from './oauth-login.request.dto';
+
+export class KakaoLoginRequest extends OAuthLoginRequest {}

src/auth/dtos/request/oauth-login.request.dto.ts

@@ -0,0 +1,8 @@
+import { ApiProperty } from '@nestjs/swagger';
+
+export class OAuthLoginRequest {
+  @ApiProperty({
+    description: 'OAuth 인증 토큰(ex. kakao access token, google id token)',
+  })
+  authorizationToken: string;
+}

src/auth/oauth.controller.ts

@@ -22,6 +22,7 @@ import { OAuthService } from './oauth.service';
 import { googleUserInfo } from './dtos/google.dto';
 import { LoginOutput } from './dtos/login.dto';
 import { ErrorOutput } from '../common/dtos/output.dto';
+import { KakaoLoginRequest } from './dtos/request/kakao-login.request.dto';
 
 @Controller('oauth')
 @ApiTags('OAuth')
@@ -129,4 +130,13 @@ export class OAuthController {
   async appleLogin(@Query('code') code: string): Promise<LoginOutput> {
     return this.oauthService.appleLogin(code);
   }
+
+  @ApiOperation({
+    summary: '카카오 로그인 요청',
+    description: 'accessToken을 받아 카카오 로그인을 요청합니다.',
+  })
+  @Post('kakao')
+  async createOneWithKakao(@Body() kakaoLoginRequest: KakaoLoginRequest) {
+    return this.oauthService.createOneWithKakao(kakaoLoginRequest);
+  }
 }

src/auth/oauth.service.ts

@@ -19,6 +19,8 @@ import * as CryptoJS from 'crypto-js';
 import { CookieOptions } from 'express';
 import { RedisService } from '../infra/redis/redis.service';
 import { REFRESH_TOKEN_KEY } from './constants';
+import { KakaoLoginRequest } from './dtos/request/kakao-login.request.dto';
+import { KakaoLoginDto } from './dtos/kakao-login.dto';
 
 @Injectable()
 export class OAuthService {
@@ -118,6 +120,40 @@ export class OAuthService {
     }
   }
 
+  async createOneWithKakao({ authorizationToken }: KakaoLoginDto) {
+    try {
+      const { userInfo } = await this.oauthUtil.getKakaoUserInfo(
+        authorizationToken,
+      );
+
+      const email = userInfo.kakao_account.email;
+      if (!email) {
+        throw new BadRequestException('Please Agree to share your email');
+      }
+
+      let user = await this.userRepository.findOneByEmail(email);
+
+      // 회원가입인 경우 기본 카테고리 생성 작업 진행
+      if (!user) {
+        user = new User();
+        user.email = email;
+        user.name = userInfo.kakao_account.profile.nickname;
+        user.profileImage = userInfo.kakao_account.profile?.profile_image_url;
+        user.password = this.encodePasswordFromEmail(
+          email,
+          process.env.KAKAO_JS_KEY,
+        );
+
+        await this.userRepository.createOne(user);
+        await this.categoryRepository.createDefaultCategories(user);
+      }
+
+      return this.oauthLogin(user.email);
+    } catch (e) {
+      throw e;
+    }
+  }
+
   // Login with Google account info
   async googleOauth({
     email,