feat(oauth): defaultOAuth2UserService 의존성 주입 추가, CustomOAuth2User 사용으로 변경

Author: m-a-king

src/main/java/com/somemore/global/auth/oauth/config/OAuth2Config.java

@@ -0,0 +1,14 @@
+package com.somemore.global.auth.oauth.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
+
+@Configuration
+public class OAuth2Config {
+
+    @Bean
+    public DefaultOAuth2UserService defaultOAuth2UserService() {
+        return new DefaultOAuth2UserService();
+    }
+}

src/main/java/com/somemore/global/auth/oauth/service/CustomOAuth2UserService.java

@@ -1,5 +1,7 @@
 package com.somemore.global.auth.oauth.service;
 
+import com.somemore.global.auth.oauth.domain.CustomOAuth2User;
+import com.somemore.global.auth.oauth.domain.OAuthProvider;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
@@ -14,18 +16,26 @@
 @RequiredArgsConstructor
 public class CustomOAuth2UserService implements OAuth2UserService<OAuth2UserRequest, OAuth2User> {
 
+    private final DefaultOAuth2UserService oauth2UserService;
+
     @Override
     public OAuth2User loadUser(OAuth2UserRequest userRequest) throws OAuth2AuthenticationException {
         try {
-            return fetchOAuthUser(userRequest);
+            OAuth2User oAuth2User = extractOAuth2User(userRequest);
+            OAuthProvider oAuthProvider = extractOAuthProvider(userRequest);
+
+            return CustomOAuth2User.of(oAuth2User, oAuthProvider);
         } catch (OAuth2AuthenticationException e) {
             log.error("OAuth 사용자 정보를 불러오는 중 문제가 발생했습니다: {}", e.getMessage(), e);
             throw e;
         }
     }
 
-    private OAuth2User fetchOAuthUser(OAuth2UserRequest userRequest) {
-        OAuth2UserService<OAuth2UserRequest, OAuth2User> oAuth2UserService = new DefaultOAuth2UserService();
-        return oAuth2UserService.loadUser(userRequest);
+    private OAuth2User extractOAuth2User(OAuth2UserRequest userRequest) {
+        return oauth2UserService.loadUser(userRequest);
+    }
+
+    private OAuthProvider extractOAuthProvider(OAuth2UserRequest userRequest) {
+        return OAuthProvider.from(userRequest.getClientRegistration().getRegistrationId());
     }
 }