feat: BE - kakao oauth로 시작하기 구현

Author: anzmin

backend/src/auth/service/oauth/kakao-oauth.service.ts

@@ -1,6 +1,8 @@
 import {
+	AUTHORIZATION_TOKEN_TYPE,
 	KAKAO_ACCESS_TOKEN_URL,
 	KAKAO_AUTHORIZE_PAGE_URL,
+	KAKAO_PROFILE_API_URL,
 	OAUTH_CALLBACK_URL,
 	OAUTH_TYPE,
 } from '@constant';
@@ -36,7 +38,19 @@ export class OauthKakaoService implements OauthService {
 		console.log(access_token);
 		return access_token;
 	}
-	getSocialInfoByAccessToken(accessToken: string): Promise<UserSocialInfo> {
-		throw new Error('Method not implemented.');
+
+	/**
+	 * @link https://developers.kakao.com/docs/latest/ko/kakaologin/rest-api#req-user-info
+	 * @param accessToken
+	 * @returns userInfo
+	 */
+	async getSocialInfoByAccessToken(accessToken: string): Promise<UserSocialInfo> {
+		const headers = { Authorization: `${AUTHORIZATION_TOKEN_TYPE} ${accessToken}` };
+		const res = await axios.get(KAKAO_PROFILE_API_URL, { headers }).then((res) => res.data);
+
+		const user = res['kakao_account'] as UserSocialInfo;
+		user.id = res.id;
+		user.oauthType = OAUTH_TYPE.KAKAO;
+		return user;
 	}
 }

backend/src/auth/service/oauth/naver-oauth.service.ts

@@ -22,13 +22,11 @@ export class OauthNaverService implements OauthService {
 	].join('/');
 
 	getSocialUrl(): string {
-		const queryString = `?response_type=token&client_id=${this.clientId}&redirect_uri=${this.callbackUrl}`;
+		const queryString = `?response_type=code&client_id=${this.clientId}&redirect_uri=${this.callbackUrl}`;
 		return NAVER_AUTHORIZE_PAGE_URL + queryString;
 	}
 
 	async getAccessTokenByAuthorizationCode(authorizationCode: string): Promise<string> {
-		if (!authorizationCode) throw new Error();
-
 		const queryString =
 			`?grant_type=authorization_code` +
 			`&client_id=${this.clientId}&client_secret=${this.clientSecret}` +
@@ -57,7 +55,8 @@ export class OauthNaverService implements OauthService {
 		if (res.resultcode !== '00') {
 			throw new Error(res.message);
 		}
-
-		return res.response;
+		const user = res.response as UserSocialInfo;
+		user.oauthType = OAUTH_TYPE.NAVER;
+		return user;
 	}
 }

backend/src/constant/auth.constant.ts

@@ -16,3 +16,4 @@ export const NAVER_PROFILE_API_URL = 'https://openapi.naver.com/v1/nid/me';
 // KAKAO
 export const KAKAO_AUTHORIZE_PAGE_URL = 'https://kauth.kakao.com/oauth/authorize';
 export const KAKAO_ACCESS_TOKEN_URL = 'https://kauth.kakao.com/oauth/token';
+export const KAKAO_PROFILE_API_URL = 'https://kapi.kakao.com/v2/user/me';