🐛 fix: 관리자 로그인 성공 시, last_login 업데이트

Author: jiwon1217

backend/src/main/java/io/f1/backend/domain/admin/app/handler/AdminLoginSuccessHandler.java

@@ -3,10 +3,13 @@
 import static io.f1.backend.domain.user.constants.SessionKeys.ADMIN;
 import static io.f1.backend.global.util.SecurityUtils.getCurrentAdminPrincipal;
 
+import io.f1.backend.domain.admin.dao.AdminRepository;
 import io.f1.backend.domain.admin.dto.AdminPrincipal;
+import io.f1.backend.domain.admin.entity.Admin;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import jakarta.servlet.http.HttpSession;
+import java.time.LocalDateTime;
 import lombok.RequiredArgsConstructor;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
@@ -16,6 +19,7 @@
 @RequiredArgsConstructor
 public class AdminLoginSuccessHandler implements AuthenticationSuccessHandler {
 
+    private final AdminRepository adminRepository;
     private final HttpSession httpSession;
 
     @Override
@@ -25,6 +29,11 @@ public void onAuthenticationSuccess(
         Authentication authentication) {
 
         AdminPrincipal principal = getCurrentAdminPrincipal();
+        Admin admin = adminRepository.findByUsername(principal.getUsername())
+            .orElseThrow(() -> new RuntimeException("E404007: 존재하지 않는 관리자입니다."));
+
+        admin.updateLastLogin(LocalDateTime.now());
+        adminRepository.save(admin);
         httpSession.setAttribute(ADMIN, principal.getAuthenticationAdmin());
 
         response.setStatus(HttpServletResponse.SC_OK); // 200

backend/src/main/java/io/f1/backend/domain/admin/entity/Admin.java

@@ -27,4 +27,8 @@ public class Admin extends BaseEntity {
 
     @Column(nullable = false)
     private LocalDateTime lastLogin;
+
+    public void updateLastLogin(LocalDateTime lastLogin) {
+        this.lastLogin = lastLogin;
+    }
 }