[feat] OAuth2 기반 구조 구축

ahdeka · ahdeka · commit cb5bad605fa6 · 2025-09-29T14:22:38.000+09:00
diff --git a/src/main/generated/com/back/domain/funding/entity/QFunding.java b/src/main/generated/com/back/domain/funding/entity/QFunding.java
@@ -29,6 +29,8 @@ public class QFunding extends EntityPathBase<Funding> {
 
     public final NumberPath<Long> collectedAmount = createNumber("collectedAmount", Long.class);
 
+    public final ListPath<FundingCommunity, QFundingCommunity> communities = this.<FundingCommunity, QFundingCommunity>createList("communities", FundingCommunity.class, QFundingCommunity.class, PathInits.DIRECT2);
+
     //inherited
     public final DateTimePath<java.time.LocalDateTime> createDate = _super.createDate;
 
@@ -46,6 +48,8 @@ public class QFunding extends EntityPathBase<Funding> {
     //inherited
     public final DateTimePath<java.time.LocalDateTime> modifyDate = _super.modifyDate;
 
+    public final ListPath<FundingNews, QFundingNews> news = this.<FundingNews, QFundingNews>createList("news", FundingNews.class, QFundingNews.class, PathInits.DIRECT2);
+
     public final ListPath<FundingOption, QFundingOption> options = this.<FundingOption, QFundingOption>createList("options", FundingOption.class, QFundingOption.class, PathInits.DIRECT2);
 
     public final NumberPath<Integer> participantCount = createNumber("participantCount", Integer.class);
diff --git a/src/main/java/com/back/domain/user/entity/User.java b/src/main/java/com/back/domain/user/entity/User.java
@@ -163,6 +163,43 @@ public void changeGrade(Grade newGrade) {
         this.grade = newGrade;
     }
 
+    /**
+     * OAuth 관련 메서드들
+     */
+
+    // 정적 팩토리 메서드 - OAuth 회원가입
+    public static User createOAuthUser(String email, String name, Provider provider, String providerId) {
+        User user = new User();
+        user.email = email;
+        user.name = name;
+        user.provider = provider;
+        user.providerId = providerId;
+        user.password = null;  // 소셜 로그인은 비밀번호 없음
+        user.role = Role.USER;
+        user.grade = Grade.SPROUT;
+        user.status = Status.ACTIVE;
+        user.money = 0;
+        user.point = 0;
+        user.isArtistVerified = false;
+        user.privacyRequiredAgreed = true;  // OAuth 로그인 시 필수 동의로 간주
+        user.marketingAgreed = false;
+        user.termsAgreedAt = LocalDateTime.now();
+        return user;
+    }
+
+    // 소셜 로그인 사용자인지 확인
+    public boolean isOAuthUser() {
+        return !Provider.LOCAL.equals(this.provider);
+    }
+
+    // OAuth 프로필 정보 업데이트 (재로그인 시)
+    public void updateOAuthProfile(String name, String profileImageUrl) {
+        if (name != null && !name.isBlank()) {
+            this.name = name;
+        }
+        if (profileImageUrl != null && !profileImageUrl.isBlank()) {
+            this.profileImageUrl = profileImageUrl;
+        }
+    }
 
-    // TODO: 정적 팩토리 메서드 - 소셜 로그인 구현
 }
diff --git a/src/main/java/com/back/domain/user/repository/UserRepository.java b/src/main/java/com/back/domain/user/repository/UserRepository.java
@@ -1,5 +1,6 @@
 package com.back.domain.user.repository;
 
+import com.back.domain.user.entity.Provider;
 import com.back.domain.user.entity.User;
 import org.springframework.data.jpa.repository.JpaRepository;
 
@@ -21,4 +22,13 @@ public interface UserRepository extends JpaRepository<User, Long>{
     boolean existsByNameAndIdNot(String name, Long id);
     boolean existsByPhoneAndIdNot(String phone, Long id);
     */
+
+    // OAuth 로그인 시 기존 사용자 확인용
+    Optional<User> findByProviderAndProviderId(Provider provider, String providerId);
+
+    // 동일 이메일의 다른 Provider 계정 확인용
+    Optional<User> findByEmailAndProvider(String email, Provider provider);
+
+    // 이메일과 Provider로 사용자 찾기
+    boolean existsByEmailAndProvider(String email, Provider provider);
 }
diff --git a/src/main/java/com/back/global/security/oauth2/GoogleUserInfo.java b/src/main/java/com/back/global/security/oauth2/GoogleUserInfo.java
@@ -0,0 +1,50 @@
+package com.back.global.security.oauth2;
+
+import java.util.Map;
+
+/**
+ * Google OAuth2 사용자 정보 구현체
+ * 
+ * Google OAuth2 응답 예시:
+ * {
+ *   "sub": "1234567890",           // Google 고유 ID
+ *   "name": "홍길동",
+ *   "email": "hong@gmail.com",
+ *   "picture": "https://lh3.googleusercontent.com/..."
+ * }
+ */
+public class GoogleUserInfo implements OAuth2UserInfo {
+
+    private final Map<String, Object> attributes;
+
+    // SpringSecurity가 Google로부터 받은 JSON을 Map 형태로 전달
+    public GoogleUserInfo(Map<String, Object> attributes) {
+        this.attributes = attributes;
+    }
+
+    @Override
+    public String getProviderId() {
+        return (String) attributes.get("sub");
+    }
+
+    @Override
+    public String getProvider() {
+        return "GOOGLE";
+    }
+
+    @Override
+    public String getEmail() {
+        return (String) attributes.get("email");
+    }
+
+    @Override
+    public String getName() {
+        return (String) attributes.get("name");
+    }
+
+    @Override
+    public String getProfileImageUrl() {
+        return (String) attributes.get("picture");
+    }
+
+}
diff --git a/src/main/java/com/back/global/security/oauth2/KakaoUserInfo.java b/src/main/java/com/back/global/security/oauth2/KakaoUserInfo.java
@@ -0,0 +1,67 @@
+package com.back.global.security.oauth2;
+
+import java.util.Map;
+
+/**
+ * Kakao Oauth2 사용자 정보 구현체
+ * 
+ * Kakao OAuth2 응답 예시:
+ * {
+ *   "id": 1234567890,
+ *   "properties": {
+ *     "nickname": "홍길동",
+ *     "profile_image": "https://k.kakaocdn.net/..."
+ *   },
+ *   "kakao_account": {
+ *     "email": "hong@kakao.com"
+ *   }
+ * }
+ */
+public class KakaoUserInfo implements OAuth2UserInfo{
+
+    private final Map<String, Object> attributes;
+
+    // SpringSecurity가 Kakao로부터 받은 JSON을 Map 형태로 전달
+    public KakaoUserInfo(Map<String, Object> attributes) {
+        this.attributes = attributes;
+    }
+
+    @Override
+    public String getProviderId() {
+        // Kakao는 id를 숫자로 주므로 String으로 변환
+        return String.valueOf(attributes.get("id"));
+    }
+
+    @Override
+    public String getProvider() {
+        return "KAKAO";
+    }
+
+    @Override
+    public String getEmail() {
+        Map<String, Object> kakaoAccount = (Map<String, Object>) attributes.get("kakao_account");
+        if (kakaoAccount == null) {
+            return null;
+        }
+        return (String) kakaoAccount.get("email");
+    }
+
+    @Override
+    public String getName() {
+        Map<String, Object> properties = (Map<String, Object>) attributes.get("properties");
+        if (properties == null) {
+            return null;
+        }
+        return (String) properties.get("nickname");
+    }
+
+    @Override
+    public String getProfileImageUrl() {
+        Map<String, Object> properties = (Map<String, Object>) attributes.get("properties");
+        if (properties == null) {
+            return null;
+        }
+        return (String) properties.get("profile_image");
+    }
+
+}
diff --git a/src/main/java/com/back/global/security/oauth2/NaverUserInfo.java b/src/main/java/com/back/global/security/oauth2/NaverUserInfo.java
@@ -0,0 +1,70 @@
+package com.back.global.security.oauth2;
+
+import java.util.Map;
+
+/**
+ * Naver OAuth2 사용자 정보 구현체
+ *
+ * Naver OAuth2 응답 예시:
+ * {
+ *   "resultcode": "00",
+ *   "message": "success",
+ *   "response": {
+ *     "id": "1234567890",
+ *     "name": "홍길동",
+ *     "email": "hong@naver.com",
+ *     "profile_image": "https://phinf.pstatic.net/..."
+ *   }
+ * }
+ */
+public class NaverUserInfo implements OAuth2UserInfo {
+
+    private final Map<String, Object> attributes;
+
+    // SpringSecurity가 Naver로부터 받은 JSON을 Map 형태로 전달
+    public NaverUserInfo(Map<String, Object> attributes) {
+        this.attributes = attributes;
+    }
+
+    @Override
+    public String getProviderId() {
+        Map<String, Object> response = (Map<String, Object>) attributes.get("response");
+        if (response == null) {
+            return null;
+        }
+        return (String) response.get("id");
+    }
+
+    @Override
+    public String getProvider() {
+        return "NAVER";
+    }
+
+    @Override
+    public String getEmail() {
+        Map<String, Object> response = (Map<String, Object>) attributes.get("response");
+        if (response == null) {
+            return null;
+        }
+        return (String) response.get("email");
+    }
+
+    @Override
+    public String getName() {
+        Map<String, Object> response = (Map<String, Object>) attributes.get("response");
+        if (response == null) {
+            return null;
+        }
+        return (String) response.get("name");
+    }
+
+    @Override
+    public String getProfileImageUrl() {
+        Map<String, Object> response = (Map<String, Object>) attributes.get("response");
+        if (response == null) {
+            return null;
+        }
+        return (String) response.get("profile_image");
+    }
+
+}
diff --git a/src/main/java/com/back/global/security/oauth2/OAuth2UserInfo.java b/src/main/java/com/back/global/security/oauth2/OAuth2UserInfo.java
@@ -0,0 +1,18 @@
+package com.back.global.security.oauth2;
+
+/**
+ * Google, Kakao, Naver 등 각 Provider의 응답 형식이 다르기 때문에
+ * OAuth2 Provider 별로 사용자 정보를 추상화하기 위한 인터페이스
+ */
+public interface OAuth2UserInfo {
+
+    // Provider 고유 ID (예: Google의 sub, Kakao의 id 등)
+    String getProviderId();
+
+    // Provider 이름 (예: google, kakao, naver 등)
+    String getProvider();
+
+    String getEmail();
+    String getName();
+    String getProfileImageUrl();
+}
diff --git a/src/main/java/com/back/global/security/oauth2/OAuth2UserInfoFactory.java b/src/main/java/com/back/global/security/oauth2/OAuth2UserInfoFactory.java
@@ -0,0 +1,21 @@
+package com.back.global.security.oauth2;
+
+import com.back.global.exception.ServiceException;
+
+import java.util.Map;
+
+/**
+ * OAuth2UserInfo 팩토리 클래스
+ * 주어진 Provider에 따라 적절한 OAuth2UserInfo 구현체를 생성
+ */
+public class OAuth2UserInfoFactory {
+
+    public static OAuth2UserInfo getAuth2UserInfo(String registrationId, Map<String, Object> attributes) {
+        return switch (registrationId.toUpperCase()) {
+            case "GOOGLE" -> new GoogleUserInfo(attributes);
+            case "KAKAO" -> new KakaoUserInfo(attributes);
+            case "NAVER" -> new NaverUserInfo(attributes);
+            default -> throw new ServiceException("400", "지원하지 않는 소셜 로그인 제공자입니다: " + registrationId);
+        };
+    }
+}
