/api/v1/user/me 세션 시각을 추가하고 userfront 대시보드 Unknown 세션 시간 문제 수정

userfront/lib/features/dashboard/domain/session_time_resolver.dart

@@ -0,0 +1,50 @@
+import 'dart:convert';
+
+import '../../profile/data/models/user_profile_model.dart';
+
+DateTime? resolveDashboardSessionIssuedAt({
+  String? token,
+  UserProfile? profile,
+}) {
+  final tokenIssuedAt = _getJwtIssuedAt(token);
+  if (tokenIssuedAt != null) {
+    return tokenIssuedAt;
+  }
+  return _parseSessionAuthenticatedAt(profile?.sessionAuthenticatedAt);
+}
+
+DateTime? _getJwtIssuedAt(String? token) {
+  if (token == null || token.isEmpty) {
+    return null;
+  }
+  try {
+    final parts = token.split('.');
+    if (parts.length != 3) {
+      return null;
+    }
+    final payload = utf8.decode(
+      base64Url.decode(base64Url.normalize(parts[1])),
+    );
+    final data = json.decode(payload) as Map<String, dynamic>;
+    final iatValue = data['iat'] ?? data['auth_time'];
+    if (iatValue is num) {
+      return DateTime.fromMillisecondsSinceEpoch(
+        iatValue.toInt() * 1000,
+      ).toLocal();
+    }
+  } catch (_) {
+    return null;
+  }
+  return null;
+}
+
+DateTime? _parseSessionAuthenticatedAt(String? value) {
+  if (value == null || value.trim().isEmpty) {
+    return null;
+  }
+  try {
+    return DateTime.parse(value).toLocal();
+  } catch (_) {
+    return null;
+  }
+}

userfront/lib/features/dashboard/presentation/dashboard_screen.dart

@@ -7,6 +7,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'package:flutter_dotenv/flutter_dotenv.dart';
+import '../domain/session_time_resolver.dart';
 import '../domain/providers/linked_rps_provider.dart';
 import '../../../../core/notifiers/auth_notifier.dart';
 import '../../../../core/services/auth_proxy_service.dart';
@@ -404,32 +405,6 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
     }
   }
 
-  DateTime? _getJwtIssuedAt() {
-    final token = AuthTokenStore.getToken();
-    if (token == null || token.isEmpty) {
-      return null;
-    }
-    try {
-      final parts = token.split('.');
-      if (parts.length != 3) {
-        return null;
-      }
-      final payload = utf8.decode(
-        base64Url.decode(base64Url.normalize(parts[1])),
-      );
-      final data = json.decode(payload) as Map<String, dynamic>;
-      final iatValue = data['iat'] ?? data['auth_time'];
-      if (iatValue is num) {
-        return DateTime.fromMillisecondsSinceEpoch(
-          iatValue.toInt() * 1000,
-        ).toLocal();
-      }
-    } catch (_) {
-      return null;
-    }
-    return null;
-  }
-
   String _formatDateTime(DateTime dateTime) {
     final yyyy = dateTime.year.toString().padLeft(4, '0');
     final mm = dateTime.month.toString().padLeft(2, '0');
@@ -716,7 +691,10 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
       final department = departmentValue.isNotEmpty
           ? departmentValue
           : tr('ui.userfront.profile.department_empty');
-      final sessionIssuedAt = _getJwtIssuedAt();
+      final sessionIssuedAt = resolveDashboardSessionIssuedAt(
+        token: AuthTokenStore.getToken(),
+        profile: profile,
+      );
 
       return Scaffold(
         backgroundColor: _subtle,

userfront/lib/features/profile/data/models/user_profile_model.dart

@@ -33,6 +33,7 @@ class UserProfile {
   final String department;
   final String affiliationType;
   final String companyCode;
+  final String? sessionAuthenticatedAt;
   final Map<String, dynamic>? metadata;
   final Tenant? tenant;
 
@@ -44,6 +45,7 @@ class UserProfile {
     required this.department,
     required this.affiliationType,
     required this.companyCode,
+    this.sessionAuthenticatedAt,
     this.metadata,
     this.tenant,
   });
@@ -57,6 +59,7 @@ class UserProfile {
       department: json['department'] ?? '',
       affiliationType: json['affiliationType'] ?? '',
       companyCode: json['companyCode'] ?? '',
+      sessionAuthenticatedAt: json['sessionAuthenticatedAt'] as String?,
       metadata: json['metadata'] != null
           ? Map<String, dynamic>.from(json['metadata'])
           : null,
@@ -73,6 +76,7 @@ class UserProfile {
       'department': department,
       'affiliationType': affiliationType,
       'companyCode': companyCode,
+      'sessionAuthenticatedAt': sessionAuthenticatedAt,
       'metadata': metadata,
       'tenant': tenant?.toJson(),
     };
@@ -87,6 +91,7 @@ class UserProfile {
       department: department ?? this.department,
       affiliationType: affiliationType,
       companyCode: companyCode,
+      sessionAuthenticatedAt: sessionAuthenticatedAt,
       tenant: tenant,
     );
   }