Added ads

lib/main.dart

@@ -7,7 +7,13 @@ import 'package:QuickSSH/services/theme_controller.dart';
 final themeController = ThemeController();
 final settingsController = SettingsController();
 
-void main() {
+final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
+
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  await settingsController.initializationFuture;
+
   runApp(MyApp());
 }
 
@@ -22,6 +28,8 @@ class MyApp extends StatelessWidget {
         return MaterialApp(
           title: 'Quick SSH',
 
+          navigatorKey: navigatorKey,
+
           theme: MyThemes.lightTheme,
           darkTheme: MyThemes.darkTheme,
           themeMode: themeController.themeMode,

lib/screens/home_screen.dart

@@ -5,6 +5,9 @@ import 'add_client.dart';
 import 'package:QuickSSH/classes/ServerCommand.dart';
 import 'package:QuickSSH/services/storage_service.dart';
 import 'package:QuickSSH/screens/settings.dart';
+import 'package:flutter/services.dart';
+import 'package:QuickSSH/main.dart';
+import 'package:QuickSSH/widgets/ad_banner.dart';
 
 class HomeScreen extends StatefulWidget {
   const HomeScreen({super.key});
@@ -20,6 +23,13 @@ class _HomeScreenState extends State<HomeScreen> {
   void initState() {
     super.initState();
     _loadData();
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      bool allowed = await settingsController.checkSecurity();
+
+      if (!allowed) {
+        SystemNavigator.pop();
+      }
+    });
   }
 
   void _loadData() async {
@@ -106,6 +116,9 @@ class _HomeScreenState extends State<HomeScreen> {
           );
         },
       ),
+      bottomNavigationBar: SafeArea(
+        child: MyBannerAd(isEnabled: settingsController.adsEnabled),
+      ),
       backgroundColor: theme.surface,
     );
   }
@@ -151,7 +164,9 @@ class _HomeScreenState extends State<HomeScreen> {
   _openSettings() {
     Navigator.push(
       context,
-      MaterialPageRoute(builder: (context) => const Settings()),
-    );
+      MaterialPageRoute(builder: (context) => Settings()),
+    ).then((_) {
+      setState(() {});
+    });
   }
 }

lib/screens/settings.dart

@@ -115,6 +115,64 @@ class _SettingsState extends State<Settings> {
                     ),
                   ],
                 ),
+                SizedBox(height: 20),
+                Row(
+                  children: [
+                    Expanded(
+                      child: Text(
+                        "Biometric Unlock",
+                        style: TextStyle(
+                          fontWeight: FontWeight.bold,
+                          fontSize: 20,
+                          color: theme.onSurface,
+                        ),
+                      ),
+                    ),
+                    Expanded(
+                      child: Switch(
+                        activeTrackColor: theme.primary,
+                        activeThumbColor: theme.onPrimary,
+                        inactiveThumbColor: theme.onSurface,
+                        inactiveTrackColor: theme.surface,
+                        value: settingsController.biometricEnabled,
+                        onChanged: (bool value) {
+                          settingsController.toggleBiometric(value);
+                          if (value) HapticFeedback.mediumImpact();
+                          setState(() {});
+                        },
+                      ),
+                    ),
+                  ],
+                ),
+                SizedBox(height: 20),
+                Row(
+                  children: [
+                    Expanded(
+                      child: Text(
+                        "Enable Ads",
+                        style: TextStyle(
+                          fontWeight: FontWeight.bold,
+                          fontSize: 20,
+                          color: theme.onSurface,
+                        ),
+                      ),
+                    ),
+                    Expanded(
+                      child: Switch(
+                        activeTrackColor: theme.primary,
+                        activeThumbColor: theme.onPrimary,
+                        inactiveThumbColor: theme.onSurface,
+                        inactiveTrackColor: theme.surface,
+                        value: settingsController.adsEnabled,
+                        onChanged: (bool value) {
+                          settingsController.toggleAds(value);
+                          if (value) HapticFeedback.mediumImpact();
+                          setState(() {});
+                        },
+                      ),
+                    ),
+                  ],
+                ),
               ],
             ),
           ),

lib/services/settings_controller.dart

@@ -1,25 +1,71 @@
 import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:local_auth/local_auth.dart';
 
 class SettingsController extends ChangeNotifier {
   bool _vibrationEnabled = true;
   bool get vibrationEnabled => _vibrationEnabled;
 
+  bool _biometricEnabled = false;
+  bool get biometricEnabled => _biometricEnabled;
+
+  bool _adsEnabled = true;
+  bool get adsEnabled => _adsEnabled;
+
+  final LocalAuthentication auth = LocalAuthentication();
+
+  late Future<void> initializationFuture;
+
   SettingsController() {
-    _loadSettings();
+    initializationFuture = _loadSettings();
   }
 
   Future<void> _loadSettings() async {
     final prefs = await SharedPreferences.getInstance();
     _vibrationEnabled = prefs.getBool('vibration_enabled') ?? true;
+    _biometricEnabled = prefs.getBool('biometric_enabled') ?? false;
+    _adsEnabled = prefs.getBool('ads_enabled') ?? true;
     notifyListeners();
   }
 
   Future<void> toggleVibration(bool value) async {
-    print("Toggling vibration to: $value");
     _vibrationEnabled = value;
     final prefs = await SharedPreferences.getInstance();
     await prefs.setBool('vibration_enabled', value);
     notifyListeners();
   }
+
+  Future<void> toggleBiometric(bool value) async {
+    _biometricEnabled = value;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool('biometric_enabled', value);
+    notifyListeners();
+  }
+
+  Future<void> toggleAds(bool value) async {
+    _adsEnabled = value;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool('ads_enabled', value);
+    notifyListeners();
+  }
+
+  Future<bool> checkSecurity() async {
+    await initializationFuture;
+
+    if (!_biometricEnabled) return true;
+
+    bool canCheck = await auth.canCheckBiometrics;
+    bool isSupported = await auth.isDeviceSupported();
+
+    if (!canCheck && !isSupported) return true;
+
+    try {
+      return await auth.authenticate(
+        localizedReason: 'Unlock QuickSSH',
+        biometricOnly: false,
+      );
+    } catch (e) {
+      return false;
+    }
+  }
 }

lib/widgets/ad_banner.dart

@@ -0,0 +1,58 @@
+import 'package:google_mobile_ads/google_mobile_ads.dart';
+import 'package:flutter/material.dart';
+
+class MyBannerAd extends StatefulWidget {
+  final bool isEnabled;
+  const MyBannerAd({super.key, required this.isEnabled});
+
+  @override
+  State<MyBannerAd> createState() => _MyBannerAdState();
+}
+
+class _MyBannerAdState extends State<MyBannerAd> {
+  BannerAd? _bannerAd;
+  bool _isLoaded = false;
+  bool _isInitializing = false;
+
+  @override
+  void initState() {
+    super.initState();
+    if (widget.isEnabled) {
+      _loadAd();
+    }
+  }
+
+  void _loadAd() async {
+    _bannerAd = BannerAd(
+      adUnitId: 'ca-app-pub-2626773788355001/7557216229',
+      request: const AdRequest(),
+      size: AdSize.banner,
+      listener: BannerAdListener(
+        onAdLoaded: (ad) => setState(() => _isLoaded = true),
+        onAdFailedToLoad: (ad, error) {
+          ad.dispose();
+          print('Ad failed to load: $error');
+        },
+      ),
+    )..load();
+  }
+
+  @override
+  void dispose() {
+    _bannerAd?.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (!widget.isEnabled || !_isLoaded || _bannerAd == null) {
+      return const SizedBox.shrink();
+    }
+    return Container(
+      alignment: Alignment.center,
+      width: double.infinity,
+      height: _bannerAd!.size.height.toDouble(),
+      child: AdWidget(ad: _bannerAd!),
+    );
+  }
+}