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baron-sso/userfront/lib/features/auth/presentation/qr_scan_screen.dart
2026-02-10 19:13:00 +09:00

318 lines
9.9 KiB
Dart

import 'package:flutter/material.dart';
import 'package:mobile_scanner/mobile_scanner.dart';
import 'package:go_router/go_router.dart';
import 'package:logging/logging.dart';
import '../../../core/services/auth_proxy_service.dart';
import '../../../core/services/auth_token_store.dart';
import 'package:userfront/i18n.dart';
class QRScanScreen extends StatefulWidget {
const QRScanScreen({super.key});
@override
State<QRScanScreen> createState() => _QRScanScreenState();
}
class _QRScanScreenState extends State<QRScanScreen> {
final _log = Logger('QRScanScreen');
final MobileScannerController controller = MobileScannerController(
detectionSpeed: DetectionSpeed.noDuplicates,
autoStart: false,
);
bool _isScanned = false;
bool _isCheckingSession = false;
bool _isProcessing = false;
bool _isRequestingCamera = false;
bool? _isSuccess;
String? _resultMessage;
@override
void initState() {
super.initState();
_bootstrapCookieSession();
WidgetsBinding.instance.addPostFrameCallback((_) {
_startScannerIfNeeded();
});
}
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);
}
}
}
Future<void> _startScannerIfNeeded() async {
if (controller.value.isRunning || controller.value.isStarting) {
return;
}
try {
await controller.start();
} catch (e) {
_log.warning('Scanner start failed: $e');
}
}
Future<void> _stopScannerIfRunning() async {
if (!controller.value.isRunning && !controller.value.isStarting) {
return;
}
try {
await controller.stop();
} catch (e) {
_log.warning('Scanner stop failed: $e');
}
}
@override
void dispose() {
controller.dispose();
super.dispose();
}
Future<void> _onDetect(BarcodeCapture capture) async {
if (_isScanned) return;
final List<Barcode> barcodes = capture.barcodes;
for (final barcode in barcodes) {
if (barcode.rawValue != null) {
_isScanned = true;
await _stopScannerIfRunning();
if (mounted) {
setState(() => _isProcessing = true);
}
String qrData = barcode.rawValue!;
String pendingRef = qrData;
// URL 형식이라면 'ref' 파라미터 추출 시도
if (qrData.startsWith('http')) {
try {
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);
}
}
_log.info('QR Code detected raw: $qrData, ref: $pendingRef');
final approveRef = qrData;
final storedToken = AuthTokenStore.getToken();
final sessionToken = storedToken;
var usesCookie = AuthTokenStore.usesCookie();
if (sessionToken == null && !usesCookie) {
usesCookie = await _bootstrapCookieSession();
}
if (sessionToken == null && !usesCookie) {
if (mounted) {
context.go('/signin?notice=qr_login_required');
}
return;
}
try {
// Call backend API to approve login with clean ref
await AuthProxyService.approveQrLogin(
approveRef,
token: sessionToken,
withCredentials: usesCookie,
);
if (mounted) {
setState(() {
_isSuccess = true;
_resultMessage = tr(
'msg.userfront.qr.approve_success',
fallback: 'QR 승인 완료! PC 화면에서 로그인이 진행됩니다.',
);
_isProcessing = false;
});
}
} catch (e) {
_log.severe("QR Approval Failed", e);
if (mounted) {
setState(() {
_isSuccess = false;
_resultMessage = tr(
'msg.userfront.qr.approve_error',
fallback: 'QR 승인 실패: {{error}}',
params: {'error': '$e'},
);
_isProcessing = false;
});
}
}
break;
}
}
}
void _resetScan() {
setState(() {
_isScanned = false;
_isProcessing = false;
_isSuccess = null;
_resultMessage = null;
});
_startScannerIfNeeded();
}
Future<void> _requestCameraPermission() async {
if (_isRequestingCamera) return;
setState(() => _isRequestingCamera = true);
try {
await _startScannerIfNeeded();
} catch (e) {
_log.warning('Camera permission request failed: $e');
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(
tr(
'msg.userfront.qr.permission_error',
fallback: '카메라 권한 요청에 실패했습니다. 브라우저/OS 설정을 확인해주세요.',
),
),
backgroundColor: Colors.red,
),
);
}
} finally {
if (mounted) {
setState(() => _isRequestingCamera = false);
}
}
}
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
? tr('ui.userfront.qr.result_success', fallback: '승인 완료')
: tr('ui.userfront.qr.result_failure', fallback: '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: Text(tr('ui.userfront.qr.rescan', fallback: '다시 스캔')),
),
if (success)
FilledButton(
onPressed: () => context.pop(),
child: Text(tr('ui.common.close', fallback: '닫기')),
),
],
),
),
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(tr('ui.userfront.qr.title', fallback: 'Scan QR Code')),
leading: IconButton(
icon: const Icon(Icons.arrow_back),
onPressed: () => context.pop(),
),
),
body: _isSuccess == null
? Stack(
children: [
MobileScanner(
controller: controller,
onDetect: _onDetect,
errorBuilder: (context, error) {
final isPermissionDenied = error.errorCode ==
MobileScannerErrorCode.permissionDenied;
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Icon(Icons.error, color: Colors.red, size: 50),
const SizedBox(height: 10),
Text(
isPermissionDenied
? tr(
'msg.userfront.qr.permission_required',
fallback: '카메라 권한이 필요합니다.',
)
: tr(
'msg.userfront.qr.camera_error',
fallback: '카메라 오류: {{error}}',
params: {'error': '${error.errorCode}'},
),
),
const SizedBox(height: 12),
FilledButton(
onPressed: _isRequestingCamera
? null
: _requestCameraPermission,
child: Text(
_isRequestingCamera
? tr('ui.common.requesting', fallback: '요청 중...')
: tr(
'ui.userfront.qr.request_permission',
fallback: '카메라 권한 요청하기',
),
),
),
],
),
);
},
),
if (_isProcessing || _isCheckingSession)
const Center(child: CircularProgressIndicator()),
],
)
: _buildResultView(),
);
}
}