feat: OAuth2ProviderService 구현

src/main/java/com/pyro/yolog/global/oauth2/service/OAuth2ProviderService.java

@@ -0,0 +1,59 @@
+package com.pyro.yolog.global.oauth2.service;
+
+import com.pyro.yolog.global.oauth2.dto.LoginRequest;
+import com.pyro.yolog.global.oauth2.userInfo.GoogleOAuth2UserInfo;
+import com.pyro.yolog.global.oauth2.userInfo.KakaoOAuth2UserInfo;
+import com.pyro.yolog.global.oauth2.userInfo.OAuth2UserInfo;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.stereotype.Service;
+import org.springframework.web.reactive.function.client.WebClient;
+
+import java.util.Map;
+
+import static com.pyro.yolog.domain.member.entity.SocialType.GOOGLE;
+import static com.pyro.yolog.domain.member.entity.SocialType.KAKAO;
+
+@Service
+@RequiredArgsConstructor
+public class OAuth2ProviderService {
+    public OAuth2UserInfo getUserInfo(LoginRequest request) {
+        return switch (request.getSocialType()) {
+            case GOOGLE -> getKakaoUserInfo(request);
+            case KAKAO -> getKakaoUserInfo(request);
+        };
+    }
+
+    private OAuth2UserInfo getKakaoUserInfo(LoginRequest request) {
+        Map attributes = WebClient.create(KAKAO.getProviderUrl())
+                .get()
+                .headers(httpHeaders -> {
+                    httpHeaders.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
+                    httpHeaders.setBearerAuth(request.getToken());
+                })
+                .accept(MediaType.APPLICATION_JSON)
+                .retrieve()
+                .bodyToMono(Map.class)
+                .log()
+                .block();
+
+        return new KakaoOAuth2UserInfo(attributes);
+    }
+
+    private OAuth2UserInfo getGoogleUserInfo(LoginRequest request) {
+        Map attributes = WebClient.create(GOOGLE.getProviderUrl())
+                .get()
+                .headers(httpHeaders -> {
+                    httpHeaders.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
+                    httpHeaders.setBearerAuth(request.getToken());
+                })
+                .accept(MediaType.APPLICATION_JSON)
+                .retrieve()
+                .bodyToMono(Map.class)
+                .log()
+                .block();
+
+        return new GoogleOAuth2UserInfo(attributes);
+    }
+}