Refactor: user 회원가입 시 토큰 자동 발급 (#196)

* refactor: 회원가입 시 자동 토큰 발급

* refactor:  null 체크 순서가 잘못된 이슈 해결

* refactor: 사용하지않는 import문 삭제

* refactor: 자바 버전 변경 수정

Author: minjee2758

src/main/java/org/ezcode/codetest/application/usermanagement/auth/dto/response/SignupResponse.java

@@ -5,9 +5,13 @@
 @Schema(description = "회원가입 응답")
 public record SignupResponse(
 	@Schema(description = "회원 가입 완료 메세지")
-	String message
+	String message,
+	@Schema(description = "생성된 accessToken")
+	String accessToken,
+	@Schema(description = "생성된 refreshToken")
+	String refreshToken
 ) {
-	public static SignupResponse from(String message) {
-		return new SignupResponse(message);
+	public static SignupResponse from(String message, String accessToken, String refreshToken) {
+		return new SignupResponse(message, accessToken, refreshToken);
 	}
 }

src/main/java/org/ezcode/codetest/application/usermanagement/auth/service/AuthService.java

@@ -52,36 +52,41 @@ public class AuthService {
 	이메일 회원가입
 	- 이미 가입된 이메일 거절
 	- 비밀번호 암호화
+	- 토큰 자동 발급 (자동 로그인)
 	 */
 	@Transactional
 	public SignupResponse signup(SignupRequest request) {
 		validateRequest(request);
-		userRegisterationProcess(request);
+		User createdUser = userRegisterationProcess(request);
 
-		return SignupResponse.from("회원가입이 완료되었습니다.");
+		// 회원가입 성공 후 자동 로그인을 위한 토큰 발급
+		String accessToken = createAccessToken(createdUser);
+		String refreshToken = createRefreshToken(createdUser);
+
+		return SignupResponse.from("회원가입이 완료되었습니다.", accessToken, refreshToken);
 	}
 
 	//1. 보낸 요청의 비밀번호&비밀번호확인이 일치하는지
 	private void validateRequest(SignupRequest request) {
 		userDomainService.checkEmailUnique(request.getEmail());
 		if (!request.getPassword().equals(request.getPasswordConfirm())){
 			throw new AuthException(AuthExceptionCode.PASSWORD_NOT_MATCH);
-		};
+		}
 	}
 
 	//2. 이미 다른 방식으로 회원가입한 유저인지 검증
-	private void userRegisterationProcess(SignupRequest request) {
+	private User userRegisterationProcess(SignupRequest request) {
 		String encodedPassword = userDomainService.encodePassword(request.getPassword());
 		User existUser = userDomainService.getUserByEmail(request.getEmail());
 		if ((existUser == null)) {
-			createNewUser(request, encodedPassword);
+			return createNewUser(request, encodedPassword);
 		} else {
-			updateExistingUser(existUser, encodedPassword);
+			return updateExistingUser(existUser, encodedPassword);
 		}
 	}
 
 	//3. 만약 아예 첫 가입 유저일 때
-	private void createNewUser(SignupRequest request, String encodedPassword) {
+	private User createNewUser(SignupRequest request, String encodedPassword) {
 		String nickname = userDomainService.generateUniqueNickname();
 		Language language = languageDomainService.getLanguage(1L); //기본적으로 1번 언어로 가입 시 세팅
 		User newUser = User.emailUser(
@@ -96,15 +101,17 @@ private void createNewUser(SignupRequest request, String encodedPassword) {
 		userDomainService.createUser(newUser);
 		userDomainService.createUserAuthType(new UserAuthType(newUser, AuthType.EMAIL));
 
+		return newUser;
 	}
 
 	//4. 만약 이전에 다른 방식으로 가입했었던(소셜) 회원일 때 -> UserAuthType테이블에 인증 방식만 추가
-	private void updateExistingUser(User existUser, String encodedPassword) {
+	private User updateExistingUser(User existUser, String encodedPassword) {
 		//로컬 가입(이메일)은 안되어있는데 소셜은 되어있는 경우이므로, UUID 비번을 사용자가 지정한 비번으로 변경한다.
 		// -> 이후 비번 변경하면 User테이블에서 변경하면됨.
 		existUser.modifyPassword(encodedPassword);
 		UserAuthType userAuthType = new UserAuthType(existUser, AuthType.EMAIL);
 		userDomainService.createUserAuthType(userAuthType);
+		return existUser;
 	}
 
 	@Transactional

src/main/java/org/ezcode/codetest/application/usermanagement/user/service/UserService.java

@@ -1,12 +1,8 @@
 package org.ezcode.codetest.application.usermanagement.user.service;
 
-import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.temporal.ChronoUnit;
 import java.util.List;
-import java.util.stream.Collectors;
-
-import org.ezcode.codetest.application.usermanagement.user.dto.response.GrantAdminRoleResponse;
 import org.ezcode.codetest.application.usermanagement.user.dto.response.UserDailySolvedHistoryResponse;
 import org.ezcode.codetest.application.usermanagement.user.dto.response.UserProfileImageResponse;
 import org.ezcode.codetest.application.usermanagement.user.dto.response.UserReviewTokenResponse;
@@ -30,8 +26,6 @@
 import org.ezcode.codetest.domain.user.model.entity.User;
 import org.ezcode.codetest.domain.user.model.entity.UserAuthType;
 import org.ezcode.codetest.domain.user.model.enums.AuthType;
-import org.ezcode.codetest.domain.user.model.enums.UserRole;
-import org.ezcode.codetest.domain.user.service.MailService;
 import org.ezcode.codetest.domain.user.service.UserDomainService;
 import org.ezcode.codetest.infrastructure.s3.S3Directory;
 import org.ezcode.codetest.infrastructure.s3.S3Uploader;

src/main/java/org/ezcode/codetest/domain/user/model/entity/User.java

@@ -20,7 +20,6 @@
 import jakarta.persistence.JoinColumn;
 import jakarta.persistence.ManyToOne;
 import jakarta.persistence.OneToMany;
-import jakarta.persistence.OneToOne;
 import jakarta.persistence.Table;
 import lombok.AccessLevel;
 import lombok.Builder;
@@ -96,7 +95,7 @@ public static User emailUser(String email, String password, String username, Str
 			.nickname(nickname)
 			.age(age)
 			.tier(Tier.NEWBIE)
-			.role(UserRole.ADMIN) // 테스트용
+			.role(UserRole.USER)
 			.isDeleted(false)
 			.verified(false)
 			.gitPushStatus(false)