refactor: 사용자 구조를 팀 레포지토리 기반 아키텍처에 맞게 정렬

src/main/java/com/zimdugo/auth/application/AccountWithdrawalService.java

@@ -4,10 +4,10 @@
 import com.zimdugo.core.exception.BusinessException;
 import com.zimdugo.core.exception.ErrorCode;
 import com.zimdugo.user.application.UserQueryService;
-import com.zimdugo.user.domain.SocialAccountStore;
 import com.zimdugo.user.domain.User;
 import com.zimdugo.user.domain.UserStatus;
-import com.zimdugo.user.domain.UserStore;
+import com.zimdugo.user.infrastructure.SocialAccountJpaRepository;
+import com.zimdugo.user.infrastructure.UserJpaRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -20,8 +20,8 @@ public class AccountWithdrawalService {
     private final AccessTokenValidationService accessTokenValidationService;
     private final JwtTokenProvider jwtTokenProvider;
     private final UserQueryService userQueryService;
-    private final UserStore userStore;
-    private final SocialAccountStore socialAccountStore;
+    private final UserJpaRepository userJpaRepository;
+    private final SocialAccountJpaRepository socialAccountJpaRepository;
     private final RefreshTokenRepository refreshTokenRepository;
 
     public void withdraw(String accessToken) {
@@ -39,9 +39,9 @@ public void withdraw(String accessToken) {
         }
 
         user.changeStatus(UserStatus.DELETED);
-        userStore.store(user);
+        userJpaRepository.save(user);
 
-        socialAccountStore.deleteAllByUserId(userId);
+        socialAccountJpaRepository.deleteAllByUserId(userId);
         refreshTokenRepository.deleteAllByUserId(userId);
     }
 }

src/main/java/com/zimdugo/auth/application/CustomOAuth2UserService.java

@@ -3,12 +3,14 @@
 import com.zimdugo.auth.domain.OAuth2UserInfo;
 import com.zimdugo.auth.domain.OAuth2UserInfoFactory;
 import com.zimdugo.user.domain.SocialAccount;
-import com.zimdugo.user.domain.SocialAccountReader;
-import com.zimdugo.user.domain.SocialAccountStore;
 import com.zimdugo.user.domain.User;
 import com.zimdugo.user.domain.UserRole;
 import com.zimdugo.user.domain.UserStatus;
-import com.zimdugo.user.domain.UserStore;
+import com.zimdugo.user.infrastructure.SocialAccountJpaRepository;
+import com.zimdugo.user.infrastructure.UserJpaRepository;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 import lombok.RequiredArgsConstructor;
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
 import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
@@ -21,18 +23,13 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
 @Service
 @RequiredArgsConstructor
 @Transactional
 public class CustomOAuth2UserService implements OAuth2UserService<OAuth2UserRequest, OAuth2User> {
 
-    private final UserStore userStore;
-    private final SocialAccountReader socialAccountReader;
-    private final SocialAccountStore socialAccountStore;
+    private final UserJpaRepository userJpaRepository;
+    private final SocialAccountJpaRepository socialAccountJpaRepository;
 
     @Override
     public OAuth2User loadUser(OAuth2UserRequest userRequest) throws OAuth2AuthenticationException {
@@ -48,67 +45,51 @@ public OAuth2User loadUser(OAuth2UserRequest userRequest) throws OAuth2Authentic
 
         Map<String, Object> attributes = new HashMap<>(oAuth2User.getAttributes());
         attributes.put("userId", user.getId());
-        attributes.put("email", user.getEmail());      // null 가능
+        attributes.put("email", user.getEmail());
         attributes.put("nickname", user.getNickname());
         attributes.put("role", user.getRoleOrDefault().name());
 
-        String nameAttributeKey = resolveNameAttributeKey(user, userInfo);
+        String nameAttributeKey = resolveNameAttributeKey(user);
 
         return new DefaultOAuth2User(
-                List.of(new SimpleGrantedAuthority(toAuthority(user.getRoleOrDefault()))),
-                attributes,
-                nameAttributeKey
+            List.of(new SimpleGrantedAuthority(toAuthority(user.getRoleOrDefault()))),
+            attributes,
+            nameAttributeKey
         );
     }
 
     private void validateRequiredFields(OAuth2UserInfo userInfo, String registrationId) {
         if (userInfo.getProviderUserId() == null || userInfo.getProviderUserId().isBlank()) {
             throw new OAuth2AuthenticationException(
-                    new OAuth2Error("invalid_user_info"),
-                    registrationId + " 사용자 식별값(providerUserId)을 가져오지 못했습니다."
+                new OAuth2Error("invalid_user_info"),
+                registrationId + " 사용자 식별자(providerUserId)를 가져오지 못했습니다."
             );
         }
     }
 
     private User findOrCreateUser(OAuth2UserInfo userInfo) {
-        return socialAccountReader
+        return socialAccountJpaRepository
             .findByProviderAndProviderUserId(userInfo.getProvider(), userInfo.getProviderUserId())
-            .map(socialAccount -> syncAndGetUser(socialAccount, userInfo))
+            .map(SocialAccount::getUser)
             .orElseGet(() -> createNewUser(userInfo));
     }
 
-    private User syncAndGetUser(SocialAccount socialAccount, OAuth2UserInfo userInfo) {
-        socialAccount.updateProviderProfile(
-            normalize(userInfo.getEmail()),
-            normalize(userInfo.getProfileImageUrl())
-        );
-        SocialAccount saved = socialAccountStore.store(socialAccount);
-        return saved.getUser();
-    }
-
     private User createNewUser(OAuth2UserInfo userInfo) {
         String email = normalize(userInfo.getEmail());
         String nickname = resolveNickname(userInfo);
         String profileImageUrl = normalize(userInfo.getProfileImageUrl());
 
-        User user = new User(
-                email,               // 카카오는 null일 수 있음
-                nickname,
-                profileImageUrl,
-                UserStatus.ACTIVE
-        );
-
-        User savedUser = userStore.store(user);
+        User user = new User(email, nickname, profileImageUrl, UserStatus.ACTIVE);
+        User savedUser = userJpaRepository.save(user);
 
         SocialAccount socialAccount = new SocialAccount(
-                savedUser,
-                userInfo.getProvider(),
-                userInfo.getProviderUserId(),
-                email,               // null 가능
-                profileImageUrl
+            savedUser,
+            userInfo.getProvider(),
+            userInfo.getProviderUserId(),
+            email,
+            profileImageUrl
         );
-
-        socialAccountStore.store(socialAccount);
+        socialAccountJpaRepository.save(socialAccount);
 
         return savedUser;
     }
@@ -135,7 +116,7 @@ private String normalize(String value) {
         return trimmed.isBlank() ? null : trimmed;
     }
 
-    private String resolveNameAttributeKey(User user, OAuth2UserInfo userInfo) {
+    private String resolveNameAttributeKey(User user) {
         if (user.getEmail() != null && !user.getEmail().isBlank()) {
             return "email";
         }

src/main/java/com/zimdugo/auth/domain/FacebookOAuth2UserInfo.java

@@ -1,6 +1,6 @@
 package com.zimdugo.auth.domain;
 
-import com.zimdugo.identity.domain.AuthProvider;
+import com.zimdugo.user.domain.AuthProvider;
 
 import java.util.Map;
 

src/main/java/com/zimdugo/auth/domain/GoogleOAuth2UserInfo.java

@@ -1,6 +1,6 @@
 package com.zimdugo.auth.domain;
 
-import com.zimdugo.identity.domain.AuthProvider;
+import com.zimdugo.user.domain.AuthProvider;
 
 import java.util.Map;
 

src/main/java/com/zimdugo/auth/domain/KakaoOAuth2UserInfo.java

@@ -1,6 +1,6 @@
 package com.zimdugo.auth.domain;
 
-import com.zimdugo.identity.domain.AuthProvider;
+import com.zimdugo.user.domain.AuthProvider;
 
 import java.util.Map;
 

src/main/java/com/zimdugo/auth/domain/NaverOAuth2UserInfo.java

@@ -1,6 +1,6 @@
 package com.zimdugo.auth.domain;
 
-import com.zimdugo.identity.domain.AuthProvider;
+import com.zimdugo.user.domain.AuthProvider;
 
 import java.util.Map;
 

src/main/java/com/zimdugo/auth/domain/OAuth2UserInfo.java

@@ -1,6 +1,6 @@
 package com.zimdugo.auth.domain;
 
-import com.zimdugo.identity.domain.AuthProvider;
+import com.zimdugo.user.domain.AuthProvider;
 
 public interface OAuth2UserInfo {
 

src/main/java/com/zimdugo/user/application/UserQueryService.java

@@ -1,45 +1,46 @@
 package com.zimdugo.user.application;
 
 import com.zimdugo.user.domain.SocialAccount;
-import com.zimdugo.user.domain.SocialAccountReader;
 import com.zimdugo.user.domain.User;
-import com.zimdugo.user.domain.UserReader;
-import com.zimdugo.core.exception.BusinessException;
-import com.zimdugo.core.exception.ErrorCode;
-import java.util.List;
+import com.zimdugo.user.infrastructure.SocialAccountJpaRepository;
+import com.zimdugo.user.infrastructure.UserJpaRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.List;
+
 @Service
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
 public class UserQueryService {
 
-    private final UserReader userReader;
-    private final SocialAccountReader socialAccountReader;
+    private final UserJpaRepository userJpaRepository;
+    private final SocialAccountJpaRepository socialAccountJpaRepository;
 
     public UserProfileResponse getProfile(Long userId) {
         User user = findById(userId);
 
-        List<SocialAccount> socialAccounts = socialAccountReader.findAllByUserId(userId);
+        List<SocialAccount> socialAccounts =
+                socialAccountJpaRepository.findAllByUserId(userId);
 
         List<String> providers = socialAccounts.stream()
-            .map(sa -> sa.getProvider().name().toLowerCase())
-            .toList();
+                .map(sa -> sa.getProvider().name().toLowerCase())
+                .toList();
 
         return new UserProfileResponse(
-            user.getId(),
-            user.getEmail(),
-            user.getNickname(),
-            user.getProfileImageUrl(),
-            user.getStatus().name(),
-            providers
+                user.getId(),
+                user.getEmail(),
+                user.getNickname(),
+                user.getProfileImageUrl(),
+                user.getStatus().name(),
+                providers
         );
     }
 
+    // AuthController에서 재발급 시 User 조회용
     public User findById(Long userId) {
-        return userReader.findById(userId)
-            .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+        return userJpaRepository.findById(userId)
+                .orElseThrow(() -> new IllegalArgumentException("user not found. id=" + userId));
     }
 }

src/main/java/com/zimdugo/identity/domain/AuthProvider.java → src/main/java/com/zimdugo/user/domain/AuthProvider.java

@@ -1,8 +1,8 @@
-package com.zimdugo.identity.domain;
+package com.zimdugo.user.domain;
 
 public enum AuthProvider {
     GOOGLE,
     KAKAO,
     NAVER,
     FACEBOOK
-}
+}

src/main/java/com/zimdugo/user/domain/SocialAccount.java

@@ -1,51 +1,78 @@
 package com.zimdugo.user.domain;
 
-import com.zimdugo.identity.domain.AuthProvider;
-import java.time.LocalDateTime;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.PrePersist;
+import jakarta.persistence.Table;
+import jakarta.persistence.UniqueConstraint;
+import lombok.AccessLevel;
 import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
 
+@Entity
+@Table(
+        name = "social_account",
+        uniqueConstraints = {
+                @UniqueConstraint(
+                        name = "uk_provider_provider_user_id",
+                        columnNames = {"provider", "provider_user_id"}
+                )
+        }
+)
 @Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class SocialAccount {
 
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
+
+    @JoinColumn(name = "user_id", nullable = false)
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
     private User user;
+
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false, length = 20)
     private AuthProvider provider;
+
+    @Column(name = "provider_user_id", nullable = false, length = 100)
     private String providerUserId;
+
+    @Column(length = 100)
     private String providerEmail;
+
+    @Column(length = 255)
     private String providerProfileImageUrl;
-    private LocalDateTime linkedAt;
 
-    public SocialAccount(
-        User user,
-        AuthProvider provider,
-        String providerUserId,
-        String providerEmail,
-        String providerProfileImageUrl
-    ) {
-        this(null, user, provider, providerUserId, providerEmail, providerProfileImageUrl, null);
-    }
+    @Column(nullable = false)
+    private LocalDateTime linkedAt;
 
-    @SuppressWarnings("checkstyle:ParameterNumber")
     public SocialAccount(
-        Long id,
-        User user,
-        AuthProvider provider,
-        String providerUserId,
-        String providerEmail,
-        String providerProfileImageUrl,
-        LocalDateTime linkedAt
+            User user,
+            AuthProvider provider,
+            String providerUserId,
+            String providerEmail,
+            String providerProfileImageUrl
     ) {
-        this.id = id;
         this.user = user;
         this.provider = provider;
         this.providerUserId = providerUserId;
         this.providerEmail = providerEmail;
         this.providerProfileImageUrl = providerProfileImageUrl;
-        this.linkedAt = linkedAt;
     }
 
-    public void updateProviderProfile(String providerEmail, String providerProfileImageUrl) {
-        this.providerEmail = providerEmail;
-        this.providerProfileImageUrl = providerProfileImageUrl;
+    @PrePersist
+    protected void onCreate() {
+        this.linkedAt = LocalDateTime.now();
     }
 }