refactor: login by email (loginId kept as internal identifier)

backend/src/main/java/com/srsystem/config/jwt/CurrentUserArgumentResolver.java

@@ -34,11 +34,11 @@ public class CurrentUserArgumentResolver implements HandlerMethodArgumentResolve
             log.warn("No authentication found");
             return null;
         }
-        String loginId = authentication.getName();
-        log.info("Resolving current user for loginId: {}", loginId);
-        Employee emp = authService.getEmployeeByLoginId(loginId);
+        String email = authentication.getName();
+        log.info("Resolving current user for email: {}", email);
+        Employee emp = authService.getEmployeeByLoginId(email);
         if (emp == null) {
-            log.warn("Employee not found for loginId: {}", loginId);
+            log.warn("Employee not found for email: {}", email);
             return null;
         }
         log.info("Found employee: empId={}, name={}", emp.getEmpId(), emp.getName());

backend/src/main/java/com/srsystem/dto/LoginRequest.java

@@ -5,8 +5,8 @@ import com.srsystem.entity.enums.RoleCode;
 import jakarta.validation.constraints.NotBlank;
 
 public record LoginRequest(
-        @NotBlank(message = "로그인 ID 는 필수입니다")
-        String loginId,
+        @NotBlank(message = "이메일은 필수입니다")
+        String email,
         @NotBlank(message = "비밀번호는 필수입니다")
         String password
 ) {

backend/src/main/java/com/srsystem/repository/EmployeeRepository.java

@@ -16,6 +16,7 @@ import java.util.Optional;
 public interface EmployeeRepository extends JpaRepository<Employee, Long> {
     @Query("SELECT e FROM Employee e WHERE e.loginId = :loginId")
     Optional<Employee> findByLoginId(@Param("loginId") String loginId);
+    Optional<Employee> findByEmail(String email);
     List<Employee> findByNameContainingIgnoreCase(String name);
     Page<Employee> findByEmpStatus(EmpStatus status, Pageable pageable);
 }

backend/src/main/java/com/srsystem/service/AuthService.java

@@ -27,15 +27,15 @@ public class AuthService {
 
     @Transactional
     public LoginResponse login(LoginRequest request) {
-        Employee employee = employeeRepository.findByLoginId(request.loginId())
+        Employee employee = employeeRepository.findByEmail(request.email())
                 .orElseThrow(() -> new BusinessException(ErrorCode.INVALID_CREDENTIALS));
 
         if (!passwordEncoder.matches(request.password(), employee.getPassword())) {
             throw new BusinessException(ErrorCode.INVALID_CREDENTIALS);
         }
 
-        String accessToken = jwtTokenProvider.generateAccessToken(employee.getLoginId(), employee.getRoleCode().name());
-        String refreshToken = jwtTokenProvider.generateRefreshToken(employee.getLoginId());
+        String accessToken = jwtTokenProvider.generateAccessToken(employee.getEmail(), employee.getRoleCode().name());
+        String refreshToken = jwtTokenProvider.generateRefreshToken(employee.getEmail());
 
         EmployeeSummary summary = employeeService.toSummary(employee);
 
@@ -48,12 +48,12 @@ public class AuthService {
             throw new BusinessException(ErrorCode.INVALID_CREDENTIALS);
         }
 
-        String loginId = jwtTokenProvider.getLoginId(refreshToken);
-        Employee employee = employeeRepository.findByLoginId(loginId)
+        String email = jwtTokenProvider.getLoginId(refreshToken);
+        Employee employee = employeeRepository.findByEmail(email)
                 .orElseThrow(() -> new BusinessException(ErrorCode.EMPLOYEE_NOT_FOUND));
 
-        String newAccessToken = jwtTokenProvider.generateAccessToken(employee.getLoginId(), employee.getRoleCode().name());
-        String newRefreshToken = jwtTokenProvider.generateRefreshToken(employee.getLoginId());
+        String newAccessToken = jwtTokenProvider.generateAccessToken(employee.getEmail(), employee.getRoleCode().name());
+        String newRefreshToken = jwtTokenProvider.generateRefreshToken(employee.getEmail());
 
         EmployeeSummary summary = employeeService.toSummary(employee);
 
@@ -61,8 +61,8 @@ public class AuthService {
     }
 
     @Transactional(readOnly = true)
-    public Employee getEmployeeByLoginId(String loginId) {
-        return employeeRepository.findByLoginId(loginId)
+    public Employee getEmployeeByLoginId(String email) {
+        return employeeRepository.findByEmail(email)
                 .orElseThrow(() -> new BusinessException(ErrorCode.EMPLOYEE_NOT_FOUND));
     }
 }

backend/src/main/java/com/srsystem/service/EmployeeService.java

@@ -76,10 +76,9 @@ public class EmployeeService {
 
     @Transactional
     public Employee create(Employee employee) {
-        if (employeeRepository.findByLoginId(employee.getLoginId()).isPresent()) {
+        if (employee.getEmail() != null && employeeRepository.findByEmail(employee.getEmail()).isPresent()) {
             throw new BusinessException(ErrorCode.DUPLICATE_LOGIN_ID);
         }
-
         if (employee.getRoleCode() == null) employee.setRoleCode(RoleCode.EMPLOYEE);
         if (employee.getEmpStatus() == null) employee.setEmpStatus(EmpStatus.ACTIVE);
         if (employee.getDispatchStatus() == null) employee.setDispatchStatus(DispatchStatus.WAITING);

backend/src/main/resources/db/migration/V17__email_unique.sql

@@ -0,0 +1,3 @@
+ALTER TABLE tb_employee ADD CONSTRAINT uq_employee_email UNIQUE (email);
+
+UPDATE tb_employee SET email = CONCAT(login_id, '@sr-system.com') WHERE email IS NULL OR email = '';

src/app/(auth)/login/page.tsx

@@ -9,7 +9,7 @@ import type { LoginRequest } from '@/types';
 export default function LoginPage() {
   const router = useRouter();
   const login = useAuthStore((s) => s.login);
-  const [loginId, setLoginId] = useState('');
+  const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
   const [showPw, setShowPw] = useState(false);
   const [loading, setLoading] = useState(false);
@@ -17,14 +17,14 @@ export default function LoginPage() {
 
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
-    if (!loginId.trim() || !password.trim()) {
-      setError('아이디와 비밀번호를 입력해주세요.');
+    if (!email.trim() || !password.trim()) {
+      setError('이메일과 비밀번호를 입력해주세요.');
       return;
     }
     setLoading(true);
     setError('');
     try {
-      await login({ loginId, password } as LoginRequest);
+      await login({ email, password } as LoginRequest);
       router.push('/');
     } catch (err: unknown) {
       const msg = (err as { message?: string })?.message || '로그인에 실패했습니다.';
@@ -53,14 +53,14 @@ export default function LoginPage() {
           )}
 
           <div>
-            <label className="block text-sm font-medium text-text-main mb-1.5">아이디</label>
+            <label className="block text-sm font-medium text-text-main mb-1.5">이메일</label>
             <input
-              type="text"
-              value={loginId}
-              onChange={(e) => setLoginId(e.target.value)}
-              placeholder="아이디를 입력하세요"
+              type="email"
+              value={email}
+              onChange={(e) => setEmail(e.target.value)}
+              placeholder="이메일을 입력하세요"
               className="w-full px-4 py-2.5 rounded-xl border border-border bg-white text-text-main text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent transition-all"
-              autoComplete="username"
+              autoComplete="email"
             />
           </div>
 

src/app/(main)/settings/accounts/page.tsx

@@ -147,7 +147,7 @@ export default function AccountsPage() {
   const handleCreate = async (e: React.FormEvent) => {
     e.preventDefault();
     if (!createForm.loginId.trim() || !createForm.name.trim() || !createForm.password.trim()) {
-      setCreateError('로그인 ID, 이름, 비밀번호는 필수입니다.');
+      setCreateError('사번, 이름, 비밀번호는 필수입니다.');
       return;
     }
     setIsSubmitting(true);
@@ -350,7 +350,7 @@ export default function AccountsPage() {
                 {/* Basic Info */}
                 <div className="grid grid-cols-2 gap-3">
                   <div>
-                    <label className={labelClass}>로그인 ID *</label>
+                    <label className={labelClass}>사번 *</label>
                     <input value={createForm.loginId} onChange={(e) => setCreateForm((f) => ({ ...f, loginId: e.target.value }))} className={fieldClass} placeholder="login_id" />
                   </div>
                   <div>

src/services/employeeService.ts

@@ -2,7 +2,7 @@ import apiClient from './apiClient';
 import type { ApiResponse, Employee, EmployeeSearchResult, Page, DispatchHistory, Project, EmergencyContact } from '@/types';
 
 const employeeService = {
-  login(credentials: { loginId: string; password: string }) {
+  login(credentials: { email: string; password: string }) {
     return apiClient.post<ApiResponse<{ accessToken: string; refreshToken: string; employee: Employee }>>('/auth/login', credentials);
   },
 

src/types/index.ts

@@ -341,7 +341,7 @@ export interface WakeResponse {
 // Auth
 // ============================================
 export interface LoginRequest {
-  loginId: string;
+  email: string;
   password: string;
 }