[NB-241] 회원탈퇴 후 로그인 시 예외 처리 구현

src/main/java/com/soyeon/nubim/domain/user/UserRepository.java

@@ -24,6 +24,9 @@ public interface UserRepository extends JpaRepository<User, Long> {
 
 	Boolean existsByNickname(String nickname);
 
+	@Query(value = "SELECT EXISTS(SELECT 1 FROM users WHERE email = :email AND is_deleted = true)", nativeQuery = true)
+	Boolean existsByEmailAndIsDeletedTrue(String email);
+
 	Page<User> findByNicknameStartsWith(Pageable pageable, String query);
 
 	@Modifying

src/main/java/com/soyeon/nubim/domain/user/UserService.java

@@ -20,6 +20,7 @@
 import com.soyeon.nubim.domain.user.dto.ProfileUpdateRequest;
 import com.soyeon.nubim.domain.user.dto.ProfileUpdateResponse;
 import com.soyeon.nubim.domain.user.dto.UserProfileResponseDto;
+import com.soyeon.nubim.domain.user.exception.DeletedUserSignupAttemptException;
 import com.soyeon.nubim.domain.user.exception.InvalidNicknameFormatException;
 import com.soyeon.nubim.domain.user.exception.MultipleProfileUpdateException;
 import com.soyeon.nubim.domain.user.exception.NicknameAlreadyExistsException;
@@ -151,6 +152,12 @@ public ProfileUpdateResponse updateProfile(ProfileUpdateRequest updateRequest) {
 		throw new MultipleProfileUpdateException();
 	}
 
+	public void checkIfUserIsDeleted(String email) {
+		if (userRepository.existsByEmailAndIsDeletedTrue(email)) {
+			throw new DeletedUserSignupAttemptException(email);
+		}
+	}
+
 	private void validateProfileImageContentType(String contentType) {
 		if (contentType == null || !contentType.equals("image/png")) {
 			throw new UnsupportedProfileImageTypeException(contentType);

src/main/java/com/soyeon/nubim/domain/user/exception/DeletedUserSignupAttemptException.java

@@ -0,0 +1,10 @@
+package com.soyeon.nubim.domain.user.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class DeletedUserSignupAttemptException extends ResponseStatusException {
+	public DeletedUserSignupAttemptException(String email) {
+		super(HttpStatus.FORBIDDEN, "deleted account : " + email);
+	}
+}

src/main/java/com/soyeon/nubim/security/oauth/AppleOAuthLoginService.java

@@ -79,6 +79,7 @@ private User upsertUserFromAppleUserInfo(User user) {
 			existingUser.updateNameFromOAuthProfile(user.getUsername());
 			return userService.saveUser(existingUser);
 		} catch (UserNotFoundException e) {
+			userService.checkIfUserIsDeleted(user.getEmail());
 			return userService.saveUser(user);
 		}
 	}

src/main/java/com/soyeon/nubim/security/oauth/GoogleOAuthLoginService.java

@@ -66,6 +66,7 @@ private User upsertUserFromGoogleUserInfo(GoogleUserInfo userInfo) {
 			oAuthLoginCommons.validateUserProvider(user, Provider.GOOGLE);
 			user = user.updateNameFromOAuthProfile(userInfo.getName());
 		} catch (UserNotFoundException e) {
+			userService.checkIfUserIsDeleted(userInfo.getEmail());
 			user = userInfo.toUserEntity();
 		}
 		return userService.saveUser(user);