NestJS Guards (passport-kakao)

https://developers.kakao.com/ 사이트에서 애플리케이션을 등록하는 과정을 생략합니다.

1. kakao.strategy.ts 파일을 생성한다.

   $ tree
   src
   ├── app.controller.spec.ts
   ├── app.controller.ts
   ├── app.module.ts
   ├── app.service.ts
   ├── auth-kakao
   │   ├── auth-kakao.controller.spec.ts
   │   ├── auth-kakao.controller.ts
   │   ├── auth-kakao.module.ts
   │   └── kakao.strategy.ts
   └── main.ts

   kakao.strategy.ts

   import { PassportStrategy } from '@nestjs/passport';
   import { Strategy } from 'passport-kakao';
   import { Injectable } from '@nestjs/common';
   import { ConfigService } from '@nestjs/config';
   import * as _ from 'lodash';
   
   @Injectable()
   export class KakaoStrategy extends PassportStrategy(Strategy) {
     constructor(private readonly configService: ConfigService) {
       super({
         clientID: configService.get<string>('KAKAO_REST_API_KEY'),
         clientSecret: configService.get<string>('KAKAO_CLIENT_SECRET'),
         callbackURL: configService.get<string>('KAKAO_REDIRECT_URI'),
       });
     }
   
     async validate(accessToken, refreshToken, profile, done) {
       // eslint-disable-next-line @typescript-eslint/no-unused-vars
       const { _raw, _json, ...profileRest } = profile;
       const properties = _.mapKeys(_json.properties, (v, k) => {
         return _.camelCase(k);
       });
   
       const payload = {
         profile: profileRest,
         properties,
         token: {
           accessToken,
           refreshToken,
         },
       };
       done(null, payload);
     }
   }

2. passport 설치한다.

   $ npm install --save @nestjs/passport passport passport-kakao
   $ npm install --save-dev @types/passport-kakao

   passport-kakao 도입 이전에 autorization_code로 부터 직접 token을 얻어 오던 코드를 삭제하면서, HttpModule을 위한 axios도 제거한다.

   $ npm uninstall @nestjs/axios axios

참고)

• https://docs.nestjs.com/security/authentication
• https://velog.io/@eslerkang/TIL-NestJSpassport-kakao
• https://www.passportjs.org/packages/passport-kakao/