QR 로그인 구현 완료

userfront/lib/features/auth/presentation/qr_scan_screen.dart

@@ -19,6 +19,38 @@ class _QRScanScreenState extends State<QRScanScreen> {
     detectionSpeed: DetectionSpeed.noDuplicates,
   );
   bool _isScanned = false;
+  bool _isCheckingSession = false;
+  bool _isProcessing = false;
+  bool? _isSuccess;
+  String? _resultMessage;
+
+  @override
+  void initState() {
+    super.initState();
+    _bootstrapCookieSession();
+  }
+
+  Future<bool> _bootstrapCookieSession() async {
+    if (AuthTokenStore.usesCookie()) {
+      return true;
+    }
+    if (_isCheckingSession) {
+      return false;
+    }
+    setState(() => _isCheckingSession = true);
+    try {
+      await AuthProxyService.checkCookieSession();
+      AuthTokenStore.setCookieMode(provider: 'ory');
+      return true;
+    } catch (e) {
+      _log.info('Cookie session check failed: $e');
+      return false;
+    } finally {
+      if (mounted) {
+        setState(() => _isCheckingSession = false);
+      }
+    }
+  }
 
   @override
   void dispose() {
@@ -33,6 +65,9 @@ class _QRScanScreenState extends State<QRScanScreen> {
     for (final barcode in barcodes) {
       if (barcode.rawValue != null) {
         _isScanned = true;
+        if (mounted) {
+          setState(() => _isProcessing = true);
+        }
         String qrData = barcode.rawValue!;
         String pendingRef = qrData;
 
@@ -42,6 +77,12 @@ class _QRScanScreenState extends State<QRScanScreen> {
             final uri = Uri.parse(qrData);
             if (uri.queryParameters.containsKey('ref')) {
               pendingRef = uri.queryParameters['ref']!;
+            } else if (uri.pathSegments.isNotEmpty) {
+              final segments = uri.pathSegments;
+              final qlIndex = segments.indexOf('ql');
+              if (qlIndex != -1 && qlIndex + 1 < segments.length) {
+                pendingRef = segments[qlIndex + 1];
+              }
             }
           } catch (e) {
             _log.warning('Failed to parse QR URL: $qrData', e);
@@ -49,10 +90,15 @@ class _QRScanScreenState extends State<QRScanScreen> {
         }
 
         _log.info('QR Code detected raw: $qrData, ref: $pendingRef');
+        final approveRef = qrData;
         
-        final sessionToken = AuthTokenStore.getToken() ??
-            Descope.sessionManager.session?.sessionToken.jwt;
-        if (sessionToken == null) {
+        final storedToken = AuthTokenStore.getToken();
+        final sessionToken = storedToken ?? Descope.sessionManager.session?.sessionToken.jwt;
+        var usesCookie = AuthTokenStore.usesCookie();
+        if (sessionToken == null && !usesCookie) {
+          usesCookie = await _bootstrapCookieSession();
+        }
+        if (sessionToken == null && !usesCookie) {
           if (mounted) {
              ScaffoldMessenger.of(context).showSnackBar(
               const SnackBar(content: Text('로그인이 필요합니다.'), backgroundColor: Colors.red),
@@ -64,28 +110,27 @@ class _QRScanScreenState extends State<QRScanScreen> {
 
         try {
           // Call backend API to approve login with clean ref
-          await AuthProxyService.approveQrLogin(pendingRef, sessionToken);
+          await AuthProxyService.approveQrLogin(
+            approveRef,
+            token: sessionToken,
+            withCredentials: usesCookie,
+          );
           
           if (mounted) {
-            ScaffoldMessenger.of(context).showSnackBar(
-              const SnackBar(
-                content: Text('로그인 승인 완료!'),
-                backgroundColor: Colors.green,
-              ),
-            );
-            // Wait a bit and go back
-            await Future.delayed(const Duration(milliseconds: 500));
-            if (mounted) context.pop();
+            setState(() {
+              _isSuccess = true;
+              _resultMessage = 'QR 승인 완료! PC 화면에서 로그인이 진행됩니다.';
+              _isProcessing = false;
+            });
           }
         } catch (e) {
           _log.severe("QR Approval Failed", e);
           if (mounted) {
-            ScaffoldMessenger.of(context).showSnackBar(
-              SnackBar(content: Text('승인 실패: $e'), backgroundColor: Colors.red),
-            );
-            // Allow rescanning after a delay
-            await Future.delayed(const Duration(seconds: 2));
-            _isScanned = false;
+            setState(() {
+              _isSuccess = false;
+              _resultMessage = 'QR 승인 실패: $e';
+              _isProcessing = false;
+            });
           }
         }
         break;
@@ -93,6 +138,58 @@ class _QRScanScreenState extends State<QRScanScreen> {
     }
   }
 
+  void _resetScan() {
+    setState(() {
+      _isScanned = false;
+      _isProcessing = false;
+      _isSuccess = null;
+      _resultMessage = null;
+    });
+    controller.start();
+  }
+
+  Widget _buildResultView() {
+    final success = _isSuccess == true;
+    final icon = success ? Icons.check_circle_outline : Icons.error_outline;
+    final color = success ? Colors.green : Colors.red;
+    final title = success ? '승인 완료' : '승인 실패';
+    final message = _resultMessage ?? '';
+
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(24.0),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Icon(icon, color: color, size: 72),
+            const SizedBox(height: 16),
+            Text(
+              title,
+              style: TextStyle(fontSize: 22, fontWeight: FontWeight.bold, color: color),
+            ),
+            const SizedBox(height: 12),
+            Text(
+              message,
+              textAlign: TextAlign.center,
+              style: const TextStyle(color: Colors.black54),
+            ),
+            const SizedBox(height: 24),
+            if (!success)
+              FilledButton(
+                onPressed: _resetScan,
+                child: const Text('다시 스캔'),
+              ),
+            if (success)
+              FilledButton(
+                onPressed: () => context.pop(),
+                child: const Text('닫기'),
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -103,22 +200,30 @@ class _QRScanScreenState extends State<QRScanScreen> {
           onPressed: () => context.pop(),
         ),
       ),
-      body: MobileScanner(
-        controller: controller,
-        onDetect: _onDetect,
-        errorBuilder: (context, error, child) {
-          return Center(
-            child: Column(
-              mainAxisAlignment: MainAxisAlignment.center,
+      body: _isSuccess == null
+          ? Stack(
               children: [
-                const Icon(Icons.error, color: Colors.red, size: 50),
-                const SizedBox(height: 10),
-                Text('Camera Error: ${error.errorCode}'),
+                MobileScanner(
+                  controller: controller,
+                  onDetect: _onDetect,
+                  errorBuilder: (context, error, child) {
+                    return Center(
+                      child: Column(
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: [
+                          const Icon(Icons.error, color: Colors.red, size: 50),
+                          const SizedBox(height: 10),
+                          Text('Camera Error: ${error.errorCode}'),
+                        ],
+                      ),
+                    );
+                  },
+                ),
+                if (_isProcessing || _isCheckingSession)
+                  const Center(child: CircularProgressIndicator()),
               ],
-            ),
-          );
-        },
-      ),
+            )
+          : _buildResultView(),
     );
   }
 }