fix : 소셜 회원가입 분기를 위해 수정

Author: yhi9839

src/main/java/checkmo/authentication/internal/security/auth/PrincipalDetails.java

@@ -15,17 +15,20 @@ public class PrincipalDetails implements UserDetails, OAuth2User {
 
     private final AuthUser user;
     private final Map<String, Object> attributes;
+    private final boolean newSocialSignUp;
 
     // 이건 이메일 로그인 시 사용하는 생성자
     public PrincipalDetails(AuthUser user) {
         this.user = user;
         this.attributes = null;
+        this.newSocialSignUp = false;
     }
 
     // 이건 OAuth2 로그인 시 사용하는 생성자
-    public PrincipalDetails(AuthUser user, Map<String, Object> attributes) {
+    public PrincipalDetails(AuthUser user, Map<String, Object> attributes, boolean newSocialSignUp) {
         this.user = user;
         this.attributes = attributes;
+        this.newSocialSignUp = newSocialSignUp;
     }
 
     @Override

src/main/java/checkmo/authentication/internal/security/oauth2/CustomOAuth2UserService.java

@@ -43,9 +43,17 @@ public OAuth2User loadUser(OAuth2UserRequest userRequest) throws OAuth2Authentic
         }
 
         // 기존 회원인지 확인, 신규 회원이면 생성
-        AuthUser user = authRepository.findByEmail(email)
-                .orElseGet(() -> registerNewMember(attributes, registrationId));
-        return new PrincipalDetails(user, oAuth2User.getAttributes());
+
+        AuthUser user = authRepository.findByEmail(email).orElse(null);
+
+        boolean newSocialSignUp = false;
+
+        if (user == null) {
+            user = registerNewMember(attributes, registrationId);
+            newSocialSignUp = true;
+        }
+
+        return new PrincipalDetails(user, oAuth2User.getAttributes(), newSocialSignUp);
     }
 
     private AuthUser registerNewMember(OAuth2Attributes attributes, String registrationId) {

src/main/java/checkmo/authentication/internal/security/oauth2/OAuth2AuthenticationSuccessHandler.java

@@ -39,12 +39,20 @@ public void onAuthenticationSuccess(
         PrincipalDetails principalDetails = (PrincipalDetails) authentication.getPrincipal();
         AuthUser user = principalDetails.getUser();
 
-        String path = user.isProfileCompleted() ? "/" : "/signup/terms";
-
-        // 기본 리다이렉트 URI
-        String targetUrl = UriComponentsBuilder.fromUriString(baseUri)
-                .pathSegment(path)
-                .build().toUriString();
+        String targetUrl;
+
+        if (user.isProfileCompleted()) {
+            targetUrl = UriComponentsBuilder.fromUriString(baseUri)
+                    .path("/")
+                    .build()
+                    .toUriString();
+        } else {
+            targetUrl = UriComponentsBuilder.fromUriString(baseUri)
+                    .path("/signup/terms")
+                    .queryParam("isSocial", principalDetails.isNewSocialSignUp())
+                    .build()
+                    .toUriString();
+        }
 
         // 성공 후 리다이렉트 URL 설정
         clearAuthenticationAttributes(request);