PostHog last fixes hopefully

frontend/pshared/lib/config/common.dart

@@ -11,6 +11,8 @@ class CommonConstants {
   static String apiEndpoint = '/api/v1';
   static String amplitudeSecret = 'c3d75b3e2520d708440acbb16b923e79';
   static String amplitudeServerZone = 'EU';
+  static String posthogApiKey = 'phc_lVhbruaZpxiQxppHBJpL36ARnPlkqbCewv6cauoceTN';
+  static String posthogHost = 'https://eu.i.posthog.com';
   static Locale defaultLocale = const Locale('en');
   static String defaultCurrency = 'EUR';
   static int defaultDimensionLength = 500;
@@ -36,6 +38,8 @@ class CommonConstants {
     apiEndpoint = configJson['apiEndpoint'] ?? apiEndpoint;
     amplitudeSecret = configJson['amplitudeSecret'] ?? amplitudeSecret;
     amplitudeServerZone = configJson['amplitudeServerZone'] ?? amplitudeServerZone;
+    posthogApiKey = configJson['posthogApiKey'] ?? posthogApiKey;
+    posthogHost = configJson['posthogHost'] ?? posthogHost;
     defaultLocale = Locale(configJson['defaultLocale'] ?? defaultLocale.languageCode);
     defaultCurrency = configJson['defaultCurrency'] ?? defaultCurrency;
     wsProto = configJson['wsProto'] ?? wsProto;

frontend/pshared/lib/config/mobile.dart

@@ -15,6 +15,8 @@ class Constants extends CommonConstants {
   static String get currentOrgKey => CommonConstants.currentOrgKey;
   static String get apiUrl => CommonConstants.apiUrl;
   static String get serviceUrl => CommonConstants.serviceUrl;
+  static String get posthogApiKey => CommonConstants.posthogApiKey;
+  static String get posthogHost => CommonConstants.posthogHost;
   static int get defaultDimensionLength => CommonConstants.defaultDimensionLength;
   static String get deviceIdStorageKey => CommonConstants.deviceIdStorageKey;
   static String get nilObjectRef => CommonConstants.nilObjectRef;

frontend/pshared/lib/config/web.dart

@@ -21,6 +21,8 @@ extension AppConfigExtension on AppConfig {
   external String? get apiEndpoint;
   external String? get amplitudeSecret;
   external String? get amplitudeServerZone;
+  external String? get posthogApiKey;
+  external String? get posthogHost;
   external String? get defaultLocale;
   external String? get wsProto;
   external String? get wsEndpoint;
@@ -40,6 +42,8 @@ class Constants extends CommonConstants {
   static String get currentOrgKey => CommonConstants.currentOrgKey;
   static String get apiUrl => CommonConstants.apiUrl;
   static String get serviceUrl => CommonConstants.serviceUrl;
+  static String get posthogApiKey => CommonConstants.posthogApiKey;
+  static String get posthogHost => CommonConstants.posthogHost;
   static int get defaultDimensionLength => CommonConstants.defaultDimensionLength;
   static String get deviceIdStorageKey => CommonConstants.deviceIdStorageKey;
   static String get nilObjectRef => CommonConstants.nilObjectRef;
@@ -57,6 +61,8 @@ class Constants extends CommonConstants {
         'apiEndpoint': config.apiEndpoint,
         'amplitudeSecret': config.amplitudeSecret,
         'amplitudeServerZone': config.amplitudeServerZone,
+        'posthogApiKey': config.posthogApiKey,
+        'posthogHost': config.posthogHost,
         'defaultLocale': config.defaultLocale,
         'wsProto': config.wsProto,
         'wsEndpoint': config.wsEndpoint,

frontend/pshared/lib/models/resources.dart

@@ -79,12 +79,13 @@ enum ResourceType {
   @JsonValue('payments')
   payments,
 
-  @JsonValue('payment_methods')
-  paymentMethods,
-
+  /// Represents payment orchestration service
   @JsonValue('payment_orchestrator')
   paymentOrchestrator,
 
+  @JsonValue('payment_methods')
+  paymentMethods,
+
   /// Represents permissions service
   @JsonValue('permissions')
   permissions,

frontend/pshared/lib/provider/account.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 
 import 'package:share_plus/share_plus.dart';
@@ -20,6 +22,8 @@ import 'package:pshared/utils/exception.dart';
 
 
 class AccountProvider extends ChangeNotifier {
+  AccountProvider();
+
   static String get currentUserRef => Constants.nilObjectRef;
 
   // The resource now wraps our Account? state along with its loading/error state.
@@ -27,6 +31,7 @@ class AccountProvider extends ChangeNotifier {
   Resource<Account?> get resource => _resource;
   late LocaleProvider _localeProvider;
   PendingLogin? _pendingLogin;
+  Future<void>? _restoreFuture;
 
   Account? get account => _resource.data;
   PendingLogin? get pendingLogin => _pendingLogin;
@@ -52,9 +57,18 @@ class AccountProvider extends ChangeNotifier {
     );
   }
 
-  // Private helper to update the resource and notify listeners.
+  @protected
+  Future<void> onAccountChanged(Account? previous, Account? current) => Future<void>.value();
+
   void _setResource(Resource<Account?> newResource) {
+    final previousAccount = _resource.data;
     _resource = newResource;
+    final currentAccount = newResource.data;
+
+    if (previousAccount != currentAccount) {
+      unawaited(onAccountChanged(previousAccount, currentAccount));
+    }
+
     notifyListeners();
   }
 
@@ -220,4 +234,11 @@ class AccountProvider extends ChangeNotifier {
       rethrow;
     }
   }
+
+  Future<void> restoreIfPossible() {
+    return _restoreFuture ??= AuthorizationService.isAuthorizationStored().then<void>((hasAuth) async {
+      if (!hasAuth) return;
+      await restore();
+    });
+  }
 }

frontend/pshared/lib/provider/permissions.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 
 import 'package:collection/collection.dart';
@@ -21,9 +23,17 @@ class PermissionsProvider extends ChangeNotifier {
   Resource<UserAccess> _userAccess = Resource(data: null, isLoading: false, error: null);
   late OrganizationsProvider _organizations;
   bool _isLoaded = false;
+  String? _loadedOrgRef;
+  //For permissions to auto-load when an organization is set, so the dashboard no longer hangs waiting for permissions to become ready.
 
   void update(OrganizationsProvider venue) {
     _organizations = venue;
+    // Trigger a reload when organization changes or when permissions were never loaded.
+    if (_organizations.isOrganizationSet &&
+        _loadedOrgRef != _organizations.current.id &&
+        !_userAccess.isLoading) {
+      unawaited(load());
+    }
   }
 
   // Generic wrapper to perform service calls and reload state
@@ -56,6 +66,7 @@ class PermissionsProvider extends ChangeNotifier {
         _userAccess = _userAccess.copyWith(data: allAccess, isLoading: false);
       }
       _isLoaded = true;
+      _loadedOrgRef = orgRef;
     } catch (e) {
       _userAccess = _userAccess.copyWith(
         error: e is Exception ? e : Exception(e.toString()),
@@ -164,6 +175,7 @@ class PermissionsProvider extends ChangeNotifier {
   void reset() {
     _userAccess = Resource(data: null, isLoading: false, error: null);
     _isLoaded = false;
+    _loadedOrgRef = null;
     notifyListeners();
   }
 

frontend/pweb/lib/main.dart

@@ -12,6 +12,8 @@ import 'package:pshared/provider/locale.dart';
 import 'package:pshared/provider/permissions.dart';
 import 'package:pshared/provider/account.dart';
 import 'package:pshared/provider/organizations.dart';
+import 'package:pshared/provider/payment/amount.dart';
+import 'package:pshared/provider/payment/quotation.dart';
 import 'package:pshared/provider/recipient/provider.dart';
 import 'package:pshared/provider/recipient/pmethods.dart';
 
@@ -26,8 +28,10 @@ import 'package:pweb/providers/wallets.dart';
 import 'package:pweb/providers/wallet_transactions.dart';
 import 'package:pweb/services/operations.dart';
 import 'package:pweb/services/payments/history.dart';
+import 'package:pweb/services/posthog.dart';
 import 'package:pweb/services/wallet_transactions.dart';
 import 'package:pweb/services/wallets.dart';
+import 'package:pweb/providers/account.dart';
 
 
 void _setupLogging() {
@@ -39,11 +43,9 @@ void _setupLogging() {
 }
 
 void main() async {
-  await Constants.initialize();
-
   WidgetsFlutterBinding.ensureInitialized();
-
-  // await AmplitudeService.initialize();
+  await Constants.initialize();
+  await PosthogService.initialize();
 
 
   _setupLogging();
@@ -56,7 +58,7 @@ void main() async {
       providers: [
         ChangeNotifierProvider(create: (_) => LocaleProvider(null)),
         ChangeNotifierProxyProvider<LocaleProvider, AccountProvider>(
-          create: (_) => AccountProvider(),
+          create: (_) => PwebAccountProvider(),
           update: (context, localeProvider, provider) => provider!..updateProvider(localeProvider),
         ),
         ChangeNotifierProxyProvider<AccountProvider, TwoFactorProvider>(
@@ -69,6 +71,7 @@ void main() async {
           update: (context, orgnization, provider) => provider!..update(orgnization),
         ),
         ChangeNotifierProvider(create: (_) => CarouselIndexProvider()),
+
         ChangeNotifierProvider(
           create: (_) => UploadHistoryProvider(service: MockUploadHistoryService())..load(),
         ),
@@ -90,9 +93,17 @@ void main() async {
         ChangeNotifierProvider(
           create: (_) => MockPaymentProvider(),
         ),
+        
         ChangeNotifierProvider(
           create: (_) => OperationProvider(OperationService())..loadOperations(),
         ),
+        ChangeNotifierProvider(
+          create: (_) => PaymentAmountProvider(),
+        ),
+        ChangeNotifierProxyProvider2<OrganizationsProvider, PaymentAmountProvider, QuotationProvider>(
+          create: (_) => QuotationProvider(),
+          update: (context, orgnization, payment, provider) => provider!..update(orgnization, payment),
+        ),
       ],
       child: const PayApp(),
     ),

frontend/pweb/lib/pages/address_book/form/page.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 
 import 'package:collection/collection.dart';
@@ -14,6 +16,7 @@ import 'package:pshared/provider/recipient/pmethods.dart';
 import 'package:pshared/provider/recipient/provider.dart';
 
 import 'package:pweb/pages/address_book/form/view.dart';
+import 'package:pweb/services/posthog.dart';
 import 'package:pweb/utils/error/snackbar.dart';
 import 'package:pweb/utils/payment/label.dart';
 import 'package:pweb/utils/snackbar.dart';
@@ -106,11 +109,11 @@ class _AdressBookRecipientFormState extends State<AdressBookRecipientForm> {
       return;
     }
 
-    // AmplitudeService.recipientAddCompleted(
-    //   _type,
-    //   _status,
-    //   _methods.keys.toSet(),
-    // );
+    unawaited(PosthogService.recipientAddCompleted(
+      _type,
+      _status,
+      _methods.keys.toSet(),
+    ));
     final recipient = await executeActionWithNotification(
       context: context, 
       action: _doSave, 

frontend/pweb/lib/pages/loaders/account.dart

@@ -1,5 +1,7 @@
 import 'package:flutter/material.dart';
 
+import 'package:logging/logging.dart';
+
 import 'package:provider/provider.dart';
 
 import 'package:pshared/provider/account.dart';
@@ -12,24 +14,56 @@ import 'package:pweb/generated/i18n/app_localizations.dart';
 
 class AccountLoader extends StatelessWidget {
   final Widget child;
-
   const AccountLoader({super.key, required this.child});
 
-  @override
-  Widget build(BuildContext context) => Consumer<AccountProvider>(builder: (context, provider, _) {
-    if (provider.isLoading) return const Center(child: CircularProgressIndicator());
-    if (provider.error != null) {
+  static final _logger = Logger('loader.account');
+
+  void _notifyErrorAndRedirect(BuildContext context, Object error) {
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!context.mounted) return;
       postNotifyUserOfErrorX(
         context: context,
         errorSituation: AppLocalizations.of(context)!.errorLogin,
-        exception: provider.error!,
+        exception: error,
       );
       navigateAndReplace(context, Pages.login);
-    }
-    if (provider.account == null) {
-      WidgetsBinding.instance.addPostFrameCallback((_) => navigateAndReplace(context, Pages.login));
+    });
+  }
+
+  void _restoreAndHandleResult(BuildContext context, AccountProvider provider) {
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      try {
+        await provider.restoreIfPossible();
+      } catch (error, stack) {
+        _logger.warning('Account restore failed: $error', error, stack);
+      }
+      if (!context.mounted) return;
+      final latest = Provider.of<AccountProvider>(context, listen: false);
+      if (latest.account != null) return;
+      if (latest.error != null) {
+        _notifyErrorAndRedirect(context, latest.error!);
+        return;
+      }
+      if (!latest.isLoading) {
+        navigateAndReplace(context, Pages.login);
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Consumer<AccountProvider>(builder: (context, provider, _) {
+      if (provider.account != null) return child;
+      if (provider.error != null) {
+        _notifyErrorAndRedirect(context, provider.error!);
+        return const Center(child: CircularProgressIndicator());
+      }
+      if (!provider.isLoading) {
+        _restoreAndHandleResult(context, provider);
+      }
+      if (provider.isLoading) return const Center(child: CircularProgressIndicator());
+      // In case of error or missing account we show loader while side effects handle navigation.
       return const Center(child: CircularProgressIndicator());
-    }
-    return child;
-  });
+    });
+  }
 }

frontend/pweb/lib/pages/loaders/permissions.dart

@@ -13,28 +13,32 @@ import 'package:pweb/generated/i18n/app_localizations.dart';
 
 class PermissionsLoader extends StatelessWidget {
   final Widget child;
-
   const PermissionsLoader({super.key, required this.child});
 
-  @override
-  Widget build(BuildContext context) => Consumer2<PermissionsProvider, AccountProvider>(builder: (context, provider, accountProvider, _) {
-    if (provider.isLoading) {
-      return const Center(child: CircularProgressIndicator());
-    }
-    if (provider.error != null) {
+  void _notifyError(BuildContext context, Exception exception) {
+    WidgetsBinding.instance.addPostFrameCallback((_) {
       postNotifyUserOfErrorX(
         context: context,
         errorSituation: AppLocalizations.of(context)!.errorLogin,
-        exception: provider.error!,
+        exception: exception,
       );
       navigateAndReplace(context, Pages.login);
-    }
-    if (provider.error == null && !provider.isReady && accountProvider.account != null) {
-      WidgetsBinding.instance.addPostFrameCallback((_) {
-        provider.load();
-      });
-      return const Center(child: CircularProgressIndicator());
-    }
-    return child;
-  });
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Consumer2<PermissionsProvider, AccountProvider>(
+      builder: (context, provider, accountProvider, _) {
+        if (provider.isLoading) {
+          return const Center(child: CircularProgressIndicator());
+        }
+        if (provider.error != null) {
+          _notifyError(context, provider.error!);
+          return const Center(child: CircularProgressIndicator());
+        }
+        return child;
+      },
+    );
+  }
 }

frontend/pweb/lib/pages/login/form.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 
 import 'package:provider/provider.dart';
@@ -14,6 +16,7 @@ import 'package:pweb/widgets/password/password.dart';
 import 'package:pweb/widgets/username.dart';
 import 'package:pweb/widgets/vspacer.dart';
 import 'package:pweb/widgets/error/snackbar.dart';
+import 'package:pweb/services/posthog.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';
 
@@ -43,6 +46,7 @@ class _LoginFormState extends State<LoginForm> {
         password: _passwordController.text,
         locale: context.read<LocaleProvider>().locale.languageCode,
       );
+      unawaited(PosthogService.login(pending: outcome.isPending));
       if (outcome.isPending) {
         // TODO: fix context usage
         navigateAndReplace(context, Pages.sfactor);

frontend/pweb/lib/pages/payment_methods/page.dart

@@ -16,6 +16,7 @@ import 'package:pweb/providers/payment_flow.dart';
 import 'package:pweb/pages/payment_methods/payment_page/body.dart';
 import 'package:pweb/providers/wallets.dart';
 import 'package:pweb/widgets/sidebar/destinations.dart';
+import 'package:pweb/services/posthog.dart';
 
 
 class PaymentPage extends StatefulWidget {
@@ -109,7 +110,7 @@ class _PaymentPageState extends State<PaymentPage> {
 
   void _handleSendPayment() {
     // TODO: Handle Payment logic
-    // AmplitudeService.paymentInitiated();
+    PosthogService.paymentInitiated(method: _flowProvider.selectedType);
   }
 
   @override

frontend/pweb/lib/pages/settings/profile/account/locale.dart

@@ -1,10 +1,12 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 
 import 'package:provider/provider.dart';
 
 import 'package:pshared/provider/locale.dart';
 
-// import 'package:pweb/services/amplitude.dart';
+import 'package:pweb/services/posthog.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';
 
@@ -58,7 +60,7 @@ class LocalePicker extends StatelessWidget {
                 onChanged: (locale) {
                   if (locale != null) {
                     localeProvider.setLocale(locale);
-                    // AmplitudeService.localeChanged(locale);
+                    unawaited(PosthogService.localeChanged(locale));
                   }
                 },
                 decoration: const InputDecoration(

frontend/pweb/lib/providers/account.dart

@@ -0,0 +1,17 @@
+import 'dart:async';
+
+import 'package:pshared/models/account/account.dart';
+import 'package:pshared/provider/account.dart';
+
+import 'package:pweb/services/posthog.dart';
+
+
+class PwebAccountProvider extends AccountProvider {
+  @override
+  Future<void> onAccountChanged(Account? previous, Account? current) {
+    if (current != null) {
+      return PosthogService.identify(current);
+    }
+    return PosthogService.reset();
+  }
+}

frontend/pweb/lib/services/posthog.dart

@@ -0,0 +1,136 @@
+import 'package:flutter/material.dart';
+
+import 'package:logging/logging.dart';
+
+import 'package:posthog_flutter/posthog_flutter.dart';
+
+import 'package:pshared/config/constants.dart';
+import 'package:pshared/models/account/account.dart';
+import 'package:pshared/models/payment/type.dart';
+import 'package:pshared/models/recipient/status.dart';
+import 'package:pshared/models/recipient/type.dart';
+
+import 'package:pweb/widgets/sidebar/destinations.dart';
+
+
+class PosthogService {
+  static final _logger = Logger('service.posthog');
+  static String? _identifiedUserId;
+  static bool _initialized = false;
+
+  static bool get isEnabled => _initialized;
+
+  static Future<void> initialize() async {
+    final apiKey = Constants.posthogApiKey;
+    if (apiKey.isEmpty) {
+      _logger.warning('PostHog API key is not configured, analytics disabled.');
+      return;
+    }
+
+    try {
+      final config = PostHogConfig(apiKey)
+        ..host = Constants.posthogHost
+        ..captureApplicationLifecycleEvents = true;
+      await Posthog().setup(config);
+      await Posthog().register('client_id', Constants.clientId);
+      _initialized = true;
+      _logger.info('PostHog initialized with host ${Constants.posthogHost}');
+    } catch (e, st) {
+      _initialized = false;
+      _logger.warning('Failed to initialize PostHog: $e', e, st);
+    }
+  }
+
+  static Future<void> identify(Account account) async {
+    if (!_initialized) return;
+    if (_identifiedUserId == account.id) return;
+
+    await Posthog().identify(
+      userId: account.id,
+      userProperties: {
+        'email': account.login,
+        'name': account.name,
+        'locale': account.locale,
+        'created_at': account.createdAt.toIso8601String(),
+      },
+    );
+    _identifiedUserId = account.id;
+  }
+
+  static Future<void> reset() async {
+    if (!_initialized) return;
+    _identifiedUserId = null;
+    await Posthog().reset();
+  }
+
+  static Future<void> login({required bool pending}) async {
+    if (!_initialized) return;
+    await _capture(
+      'login',
+      properties: {
+        'result': pending ? 'pending' : 'success',
+      },
+    );
+  }
+
+  static Future<void> pageOpened(PayoutDestination page, {String? path, String? uiSource}) async {
+    if (!_initialized) return;
+    return _capture(
+      'pageOpened',
+      properties: {
+        'page': page.name,
+        if (path != null) 'path': path,
+        if (uiSource != null) 'uiSource': uiSource,
+      },
+    );
+  }
+
+  static Future<void> localeChanged(Locale locale) async {
+    if (!_initialized) return;
+    return _capture(
+      'localeChanged',
+      properties: {'locale': locale.toLanguageTag()},
+    );
+  }
+
+  static Future<void> recipientAddCompleted(
+    RecipientType type,
+    RecipientStatus status,
+    Set<PaymentType> methods,
+  ) async {
+    if (!_initialized) return;
+    return _capture(
+      'recipientAddCompleted',
+      properties: {
+        'methods': methods.map((m) => m.name).toList(),
+        'type': type.name,
+        'status': status.name,
+      },
+    );
+  }
+
+  static Future<void> paymentInitiated({PaymentType? method}) async {
+    if (!_initialized) return;
+    return _capture(
+      'paymentInitiated',
+      properties: {
+        if (method != null) 'method': method.name,
+      },
+    );
+  }
+
+  static Future<void> _capture(
+    String eventName, {
+    Map<String, Object?>? properties,
+  }) async {
+    if (!_initialized) return;
+    final filtered = <String, Object>{};
+    if (properties != null) {
+      for (final entry in properties.entries) {
+        final value = entry.value;
+        if (value != null) filtered[entry.key] = value;
+      }
+    }
+    await Posthog().capture(eventName: eventName, properties: filtered.isEmpty ? null : filtered);
+  }
+}

frontend/pweb/lib/widgets/sidebar/side_menu.dart

@@ -1,6 +1,8 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 
-// import 'package:pweb/services/amplitude.dart';
+import 'package:pweb/services/posthog.dart';
 import 'package:pweb/widgets/sidebar/destinations.dart';
 
 
@@ -49,7 +51,7 @@ class SideMenuColumn extends StatelessWidget {
                 child: InkWell(
                   onTap: () {
                     onSelected(item);
-                    // AmplitudeService.pageOpened(item, uiSource: 'sidebar');
+                    unawaited(PosthogService.pageOpened(item, uiSource: 'sidebar'));
                   },
                   borderRadius: BorderRadius.circular(12),
                   hoverColor: theme.colorScheme.primaryContainer,

frontend/pweb/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -9,6 +9,7 @@ import amplitude_flutter
 import file_selector_macos
 import flutter_timezone
 import path_provider_foundation
+import posthog_flutter
 import share_plus
 import shared_preferences_foundation
 import sqflite_darwin
@@ -19,6 +20,7 @@ func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
   FlutterTimezonePlugin.register(with: registry.registrar(forPlugin: "FlutterTimezonePlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
+  PosthogFlutterPlugin.register(with: registry.registrar(forPlugin: "PosthogFlutterPlugin"))
   SharePlusMacosPlugin.register(with: registry.registrar(forPlugin: "SharePlusMacosPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
   SqflitePlugin.register(with: registry.registrar(forPlugin: "SqflitePlugin"))

frontend/pweb/pubspec.yaml

@@ -35,6 +35,7 @@ dependencies:
     sdk: flutter
   pshared: 
     path: ../pshared
+  posthog_flutter: ^5.9.0
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.