Fingerprint option added in profile screen

lib/features/profile/profile_screen.dart

@@ -4,6 +4,8 @@ import 'package:flutter/services.dart';
 import 'package:kmobile/data/repositories/auth_repository.dart';
 import 'package:kmobile/features/profile/change_password/change_password_screen.dart';
 import 'package:kmobile/features/profile/logout_dialog.dart';
+import 'package:kmobile/security/secure_storage.dart';
+import 'package:local_auth/local_auth.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import '../../di/injection.dart';
 import '../../l10n/app_localizations.dart';
@@ -18,6 +20,21 @@ class ProfileScreen extends StatefulWidget {
 }
 
 class _ProfileScreenState extends State<ProfileScreen> {
+    bool _isBiometricEnabled = false;
+     @override
+ void initState() {
+   super.initState();
+   _loadBiometricStatus();
+ }
+
+ Future<void> _loadBiometricStatus() async {
+   final storage = getIt<SecureStorage>();
+   final isEnabled = await storage.read('biometric_enabled');
+   setState(() {
+     _isBiometricEnabled = isEnabled == 'true';
+   });
+ }
+
     Future<void> _handleLogout(BuildContext context) async {
     final auth = getIt<AuthRepository>();
     final prefs = await SharedPreferences.getInstance();
@@ -27,6 +44,90 @@ class _ProfileScreenState extends State<ProfileScreen> {
     Navigator.pushNamedAndRemoveUntil(context, '/login', (route) => false);
   }
 
+   
+ Future<void> _handleBiometricToggle(bool enable) async {
+   final localAuth = LocalAuthentication();
+   final storage = getIt<SecureStorage>();
+   final canCheck = await localAuth.canCheckBiometrics;
+
+   if (!canCheck) {
+     // Optional: Show a snackbar or dialog if biometrics are not available
+     ScaffoldMessenger.of(context).showSnackBar(
+       SnackBar(content: Text(AppLocalizations.of(context).biometricsNotAvailable)),
+     );
+     return;
+   }
+
+   if (enable) {
+     // Show "Enable" dialog
+     final optIn = await showDialog<bool>(
+       context: context,
+       barrierDismissible: false,
+       builder: (ctx) => AlertDialog(
+         title: Text(AppLocalizations.of(context).enableFingerprintLogin),
+         content: Text(AppLocalizations.of(context).enableFingerprintMessage),
+         actions: [
+           TextButton(
+             onPressed: () => Navigator.of(ctx).pop(false),
+             child: Text(AppLocalizations.of(context).no),
+           ),
+           TextButton(
+             onPressed: () => Navigator.of(ctx).pop(true),
+             child: Text(AppLocalizations.of(context).yes),
+           ),
+         ],
+       ),
+     );
+
+     if (optIn == true) {
+       try {
+         final didAuth = await localAuth.authenticate(
+           localizedReason: AppLocalizations.of(context).authenticateToEnable,
+           options: const AuthenticationOptions(
+             stickyAuth: true,
+             biometricOnly: true,
+           ),
+         );
+         if (didAuth) {
+           await storage.write('biometric_enabled', 'true');
+           setState(() {
+             _isBiometricEnabled = true;
+           });
+         }
+       } catch (e) {
+         // Handle authentication errors
+       }
+     }
+   } else {
+     // Show "Disable" dialog
+     final optOut = await showDialog<bool>(
+       context: context,
+       barrierDismissible: false,
+       builder: (ctx) => AlertDialog(
+         title: Text(AppLocalizations.of(context).disableFingerprintLogin),
+         content: Text(AppLocalizations.of(context).disableFingerprintMessage),
+         actions: [
+           TextButton(
+             onPressed: () => Navigator.of(ctx).pop(false),
+             child: Text(AppLocalizations.of(context).no),
+           ),
+           TextButton(
+             onPressed: () => Navigator.of(ctx).pop(true),
+             child: Text(AppLocalizations.of(context).yes),
+           ),
+         ],
+       ),
+     );
+
+     if (optOut == true) {
+       await storage.write('biometric_enabled', 'false');
+       setState(() {
+         _isBiometricEnabled = false;
+       });
+     }
+   }
+ }
+
   @override
   Widget build(BuildContext context) {
     final loc = AppLocalizations.of(context);
@@ -48,6 +149,14 @@ class _ProfileScreenState extends State<ProfileScreen> {
               );
             },
           ),
+           SwitchListTile(
+   title: Text(AppLocalizations.of(context).enableFingerprintLogin),
+   value: _isBiometricEnabled,
+   onChanged: (bool value) {
+     _handleBiometricToggle(value);
+   },
+   secondary: const Icon(Icons.fingerprint),
+ ),
           ListTile(
             leading: const Icon(Icons.password),
             title: Text(loc.changeLoginPassword),