feat: 회원정보 변경시 이메일 중복 검사

backend/src/main/java/com/edufocus/edufocus/user/controller/UserController.java

@@ -37,7 +37,7 @@ public class UserController {
         if (userService.isUserIdExist(requestJoinDto.getUserId()))
             return new ResponseEntity<>("아이디가 중복 됐습니다.", HttpStatus.CONFLICT);
 
-        if(userService.isEmailExist(requestJoinDto.getEmail()))
+        if (userService.isEmailExist(requestJoinDto.getEmail()))
             return new ResponseEntity<>("이메일이 중복 됐습니다.", HttpStatus.CONFLICT);
 
         userService.join(requestJoinDto);
@@ -65,7 +65,7 @@ public class UserController {
             userService.changePassword(passwordDto, userId);
             return ResponseEntity.ok("Password changed successfully");
         } catch (Exception e) {
-            return ResponseEntity.badRequest().body(e.getMessage());
+            return ResponseEntity.status(HttpStatus.NOT_ACCEPTABLE).body(e.getMessage());
         }
     }
 

backend/src/main/java/com/edufocus/edufocus/user/model/repository/UserRepository.java

@@ -9,7 +9,7 @@ import org.springframework.data.repository.query.Param;
 
 import java.util.Optional;
 
-public interface UserRepository extends JpaRepository<User,Long> {
+public interface UserRepository extends JpaRepository<User, Long> {
     @Modifying
     @Transactional
     @Query("UPDATE User u SET u.refreshToken = :refreshToken WHERE u.id = :id")
@@ -26,7 +26,7 @@ public interface UserRepository extends JpaRepository<User,Long> {
     @Transactional
     @Modifying
     @Query("UPDATE User u set u.password = :password where u.id= :id")
-    void updatePassword(@Param("id") Long id , @Param("password") String password);
+    void updatePassword(@Param("id") Long id, @Param("password") String password);
 
 
     Optional<User> findByUserId(String userId);

backend/src/main/java/com/edufocus/edufocus/user/model/service/UserServiceImpl.java

@@ -74,6 +74,12 @@ public class UserServiceImpl implements UserService {
 
         User user = userRepository.findById(id).orElseThrow(IllegalArgumentException::new);
 
+
+        if (isEmailExist(infoDto.getEmail())) {
+            throw new IllegalArgumentException("이미 사용 중인 이메일입니다.");
+
+        }
+
         if (infoDto.getName() != null)
             user.setName(infoDto.getName());
 
@@ -159,7 +165,7 @@ public class UserServiceImpl implements UserService {
     }
 
     @Override
-    public boolean isTeacher(long userId){
+    public boolean isTeacher(long userId) {
         return userRepository.findById(userId).orElseThrow(IllegalArgumentException::new).getRole() == UserRole.ADMIN;
     }
 }