Okay, let's create the shipment tracking page (`track_page.dart`), a model for the shipment data (`shipment_model.dart`), and a service to handle fetching the data (`tracking_service.dart`). We'll start with a basic structure and mock data. You can replace the mock API call in `tracking_service.dart` with your actual API integration later. import 'package:flutter/material.dart'; import 'package:provider/provider.dart'; import 'services/tracking_service.dart'; import 'models/shipment_model.dart'; import 'providers/theme_provider.dart'; // Import ThemeProvider class TrackPage extends StatefulWidget { const TrackPage({super.key}); @override State createState() => _TrackPageState(); } class _TrackPageState extends State { final _trackingNumberController = TextEditingController(); final TrackingService _trackingService = TrackingService(); Future? _shipmentDetailsFuture; String? _error; void _trackShipment() { final trackingNumber = _trackingNumberController.text.trim(); if (trackingNumber.isNotEmpty) { setState(() { _error = null; // Clear previous errors _shipmentDetailsFuture = _trackingService.fetchShipmentDetails(trackingNumber); }); } else { setState(() { _error = 'Please enter a tracking number.'; _shipmentDetailsFuture = null; // Clear previous results }); } } @override void dispose() { _trackingNumberController.dispose(); super.dispose(); } @override Widget build(BuildContext context) { final themeProvider = Provider.of(context); final bool isDarkMode = themeProvider.isDarkMode; final Color primaryColor = Theme.of(context).colorScheme.primary; final Color onPrimaryColor = Theme.of(context).colorScheme.onPrimary; final Color cardColor = Theme.of(context).cardColor; final Color textColor = Theme.of(context).textTheme.bodyLarge!.color!; final Color hintColor = Theme.of(context).hintColor; final Color errorColor = Theme.of(context).colorScheme.error; return Scaffold( appBar: AppBar( title: const Text('Track Shipment'), backgroundColor: primaryColor, foregroundColor: onPrimaryColor, elevation: 0, // Modern look ), body: Padding( padding: const EdgeInsets.all(16.0), child: Column( crossAxisAlignment: CrossAxisAlignment.stretch, children: [ // --- Tracking Input Section --- Card( elevation: 2.0, color: cardColor, shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(12.0), ), child: Padding( padding: const EdgeInsets.all(16.0), child: Column( children: [ TextField( controller: _trackingNumberController, decoration: InputDecoration( labelText: 'Enter Tracking Number', hintText: 'e.g., 1Z999AA10123456784', prefixIcon: Icon(Icons.track_changes, color: hintColor), border: OutlineInputBorder( borderRadius: BorderRadius.circular(8.0), ), focusedBorder: OutlineInputBorder( borderSide: BorderSide(color: primaryColor, width: 2.0), borderRadius: BorderRadius.circular(8.0), ), labelStyle: TextStyle(color: hintColor), hintStyle: TextStyle(color: hintColor.withOpacity(0.7)), ), style: TextStyle(color: textColor), keyboardType: TextInputType.text, textInputAction: TextInputAction.search, onSubmitted: (_) => _trackShipment(), ), const SizedBox(height: 16.0), ElevatedButton.icon( onPressed: _trackShipment, icon: Icon(Icons.search, color: onPrimaryColor), label: Text('Track', style: TextStyle(color: onPrimaryColor)), style: ElevatedButton.styleFrom( backgroundColor: primaryColor, padding: const EdgeInsets.symmetric( horizontal: 30, vertical: 12), textStyle: const TextStyle(fontSize: 16), shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(8.0), ), ), ), if (_error != null) Padding( padding: const EdgeInsets.only(top: 8.0), child: Text( _error!, style: TextStyle(color: errorColor, fontSize: 14), ), ), ], ), ), ), const SizedBox(height: 20.0), // --- Tracking Results Section --- Expanded( child: _buildResultsSection(context), ), ], ), ), ); } Widget _buildResultsSection(BuildContext context) { if (_shipmentDetailsFuture == null) { return Center( child: Text( 'Enter a tracking number to see details.', style: TextStyle(color: Theme.of(context).hintColor, fontSize: 16), textAlign: TextAlign.center, ), ); } return FutureBuilder( future: _shipmentDetailsFuture, builder: (context, snapshot) { // --- Loading State --- if (snapshot.connectionState == ConnectionState.waiting) { return const Center(child: CircularProgressIndicator()); } // --- Error State --- if (snapshot.hasError || snapshot.data == null) { return Center( child: Card( color: Theme.of(context).colorScheme.errorContainer, child: Padding( padding: const EdgeInsets.all(16.0), child: Text( 'Error: ${snapshot.error ?? "Shipment not found."}', style: TextStyle(color: Theme.of(context).colorScheme.onErrorContainer), textAlign: TextAlign.center, ), ), ), ); } // --- Success State --- final shipment = snapshot.data!; return _buildShipmentDetails(context, shipment); }, ); } Widget _buildShipmentDetails(BuildContext context, Shipment shipment) { final themeProvider = Provider.of(context); final Color cardColor = Theme.of(context).cardColor; final Color textColor = Theme.of(context).textTheme.bodyLarge!.color!; final Color subtitleColor = Theme.of(context).textTheme.bodySmall!.color!; final Color primaryColor = Theme.of(context).colorScheme.primary; return SingleChildScrollView( // Make results scrollable child: Card( elevation: 2.0, color: cardColor, shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(12.0), ), child: Padding( padding: const EdgeInsets.all(16.0), child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ Text( 'Shipment Details', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold, color: primaryColor), ), const Divider(height: 20, thickness: 1), _buildDetailRow(context, Icons.confirmation_number, 'Tracking #:', shipment.trackingNumber), _buildDetailRow(context, Icons.local_shipping, 'Status:', shipment.status), _buildDetailRow(context, Icons.location_on, 'Current Location:', shipment.currentLocation), _buildDetailRow(context, Icons.calendar_today, 'Est. Delivery:', shipment.estimatedDelivery), const SizedBox(height: 20), Text( 'History', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold, color: primaryColor), ), const Divider(height: 20, thickness: 1), _buildHistoryStepper(context, shipment.history), ], ), ), ), ); } Widget _buildDetailRow(BuildContext context, IconData icon, String label, String value) { final Color textColor = Theme.of(context).textTheme.bodyLarge!.color!; final Color subtitleColor = Theme.of(context).textTheme.bodySmall!.color!; return Padding( padding: const EdgeInsets.symmetric(vertical: 6.0), child: Row( crossAxisAlignment: CrossAxisAlignment.start, children: [ Icon(icon, size: 20, color: Theme.of(context).colorScheme.primary), const SizedBox(width: 12), Text( label, style: TextStyle(fontWeight: FontWeight.w600, color: textColor, fontSize: 15), ), const SizedBox(width: 8), Expanded( child: Text( value, style: TextStyle(color: subtitleColor, fontSize: 15), softWrap: true, ), ), ], ), ); } Widget _buildHistoryStepper(BuildContext context, List history) { final themeProvider = Provider.of(context); final Color textColor = Theme.of(context).textTheme.bodyLarge!.color!; final Color subtitleColor = Theme.of(context).textTheme.bodySmall!.color!; final Color primaryColor = Theme.of(context).colorScheme.primary; // Sort history by timestamp descending (most recent first) history.sort((a, b) => b.timestamp.compareTo(a.timestamp)); return Stepper( physics: const NeverScrollableScrollPhysics(), // Disable stepper's own scroll currentStep: 0, // Highlight the latest event controlsBuilder: (context, details) => Container(), // Hide default controls steps: history.map((event) { return Step( title: Text( event.status, style: TextStyle(fontWeight: FontWeight.bold, color: textColor), ), subtitle: Text( event.location, style: TextStyle(color: subtitleColor), ), content: Align( alignment: Alignment.centerLeft, child: Text( '${event.timestamp.day}/${event.timestamp.month}/${event.timestamp.year} ${event.timestamp.hour}:${event.timestamp.minute.toString().padLeft(2, '0')}', style: TextStyle(color: subtitleColor, fontSize: 12), ), ), isActive: true, // Mark all as active for consistent styling state: StepState.complete, // Use complete state for styling ); }).toList(), stepIconBuilder: (stepIndex, stepState) { // Use a consistent icon for all steps return Icon(Icons.circle, color: primaryColor, size: 18); }, ); } } class Shipment { final String trackingNumber; final String status; final String currentLocation; final String estimatedDelivery; final List history; Shipment({ required this.trackingNumber, required this.status, required this.currentLocation, required this.estimatedDelivery, required this.history, }); // Add fromJson/toJson methods if needed for API integration } class TrackingEvent { final DateTime timestamp; final String status; final String location; TrackingEvent({ required this.timestamp, required this.status, required this.location, }); } import 'dart:math'; import 'package:gonavi/models/shipment_model.dart'; class TrackingService { // Simulate API call delay final _random = Random(); Future fetchShipmentDetails(String trackingNumber) async { // Simulate network delay await Future.delayed(Duration(milliseconds: 500 + _random.nextInt(1000))); // --- MOCK API RESPONSE --- // In a real app, replace this with your actual HTTP request // using packages like http or dio. // Example: Simulate "not found" for certain numbers if (trackingNumber.toUpperCase().contains('NOTFOUND')) { // Simulate an error or null response for not found // throw Exception('Shipment with tracking number $trackingNumber not found.'); return null; // Or return null if your API does that } // Example: Return mock data for a valid tracking number // You can create more complex mock data based on the trackingNumber input if (trackingNumber.isNotEmpty) { return Shipment( trackingNumber: trackingNumber.toUpperCase(), status: 'In Transit', currentLocation: 'Regional Hub, Cityville', estimatedDelivery: 'Tomorrow, End of Day', history: [ TrackingEvent( timestamp: DateTime.now().subtract(const Duration(hours: 2)), status: 'Arrived at Regional Hub', location: 'Cityville', ), TrackingEvent( timestamp: DateTime.now().subtract(const Duration(hours: 8)), status: 'Departed Facility', location: 'Townsburg', ), TrackingEvent( timestamp: DateTime.now().subtract(const Duration(days: 1)), status: 'Package Received', location: 'Origin Facility, Startown', ), TrackingEvent( timestamp: DateTime.now().subtract(const Duration(days: 1, hours: 4)), status: 'Shipment Information Sent', location: 'System', ), ], ); } // Default case if tracking number is empty or invalid format (basic check) return null; } } import 'package:firebase_core/firebase_core.dart'; import 'package:flutter/material.dart'; import 'package:flutter_localizations/flutter_localizations.dart'; import 'package:gonavi/inventory_page.dart'; import 'package:provider/provider.dart'; import 'package:firebase_auth/firebase_auth.dart'; // Core App Pages import 'login_page.dart'; import 'registration_page.dart'; import 'forgot_password_page.dart'; import 'home_page.dart'; import 'settings_page.dart'; // Feature Pages import 'services_page.dart'; import 'track_page.dart'; // Ensure this import is correct import 'profile_page.dart'; import 'notification_page.dart'; import 'analitics_page.dart'; import 'notification_settings_page.dart'; // Admin Pages import 'screens/admin_dashboard.dart'; import 'screens/admin_control_page.dart'; // Settings Sub-Pages import 'account_page.dart'; import 'theme_page.dart'; import 'privacy_page.dart'; import 'support_page.dart'; // Services import 'services/auth_service.dart'; import 'services/notification_service.dart'; // Providers import 'providers/theme_provider.dart'; // Models (if needed globally, otherwise import locally) // import 'models/shipment_model.dart'; // Services (if needed globally, otherwise import locally) // import 'services/tracking_service.dart'; void main() async { WidgetsFlutterBinding.ensureInitialized(); // --- Firebase Initialization --- // Add your Firebase options here if using Firebase // await Firebase.initializeApp( // options: DefaultFirebaseOptions.currentPlatform, // If using FlutterFire CLI // ); await Firebase.initializeApp(); // Keep if already configured elsewhere await NotificationService.initialize(); runApp( MultiProvider( providers: [ Provider(create: (_) => AuthService()), ChangeNotifierProvider(create: (_) => ThemeProvider()), // Add other global providers if needed // Provider(create: (_) => TrackingService()), ], child: const GoNaviApp(), ), ); } class GoNaviApp extends StatelessWidget { const GoNaviApp({super.key}); @override Widget build(BuildContext context) { final themeProvider = Provider.of(context); return MaterialApp( title: 'GoNavi Logistics', debugShowCheckedModeBanner: false, // Localization localizationsDelegates: const [ GlobalMaterialLocalizations.delegate, GlobalWidgetsLocalizations.delegate, GlobalCupertinoLocalizations.delegate, ], supportedLocales: const [Locale('ar', ''), Locale('en', '')], locale: const Locale('en', ''), // Default locale // Theme Settings themeMode: themeProvider.themeMode, theme: themeProvider.lightTheme, darkTheme: themeProvider.darkTheme, initialRoute: '/splash', // Start with splash screen routes: { '/splash': (context) => const SplashScreen(), '/login': (context) => const AuthWrapper(), // Handles auth check and role routing '/register': (context) => RegistrationPage(), '/forgot-password': (context) => const ForgotPasswordPage(), // Main App Routes (Protected) '/home': (context) => ProtectedRoute(page: const HomePage()), '/services': (context) => ProtectedRoute(page: const ServicesPage()), '/track': (context) => ProtectedRoute(page: const TrackPage()), // Use ProtectedRoute '/profile': (context) => ProtectedRoute(page: const ProfilePage()), '/analytics': (context) => ProtectedRoute(page: const AnalyticsPage()), '/inventory': (context) => ProtectedRoute(page: const InventoryPage()), // Assuming inventory needs auth // Settings (Protected) '/settings': (context) => ProtectedRoute(page: const SettingsPage()), '/notifications': (context) => ProtectedRoute(page: const NotificationsPage()), '/notification-settings': (context) => ProtectedRoute(page: const NotificationSettingsPage()), '/account': (context) => ProtectedRoute(page: const AccountPage()), '/theme': (context) => ProtectedRoute(page: const ThemePage()), '/privacy': (context) => ProtectedRoute(page: const PrivacyPage()), '/support': (context) => ProtectedRoute(page: const SupportPage()), // Admin Routes (Protected & Role Checked in AuthWrapper/AdminDashboard) '/admin': (context) => ProtectedRoute(page: AdminDashboard()), // ProtectedRoute ensures login '/admin-control': (context) => ProtectedRoute(page: AdminControlPage()), // Further checks might be inside AdminControlPage }, // Optional: Handle unknown routes // onUnknownRoute: (settings) { // return MaterialPageRoute(builder: (_) => UnknownRoutePage()); // }, ); } } // --- AUTH WRAPPER WITH ROLE CHECK --- class AuthWrapper extends StatelessWidget { const AuthWrapper({super.key}); @override Widget build(BuildContext context) { final authService = Provider.of(context, listen: false); return StreamBuilder( stream: authService.user, builder: (context, snapshot) { // --- Waiting for Auth State --- if (snapshot.connectionState == ConnectionState.waiting) { return const Scaffold( body: Center(child: CircularProgressIndicator()), ); } // --- User Logged In --- if (snapshot.hasData && snapshot.data != null) { // Check user role for routing return FutureBuilder( future: authService.getUserRole(snapshot.data!.uid), builder: (context, roleSnapshot) { // --- Waiting for Role --- if (roleSnapshot.connectionState == ConnectionState.waiting) { return const Scaffold( body: Center(child: CircularProgressIndicator()), ); } // --- Role Determined --- // Route to Admin Dashboard if role is 'admin' if (roleSnapshot.hasData && roleSnapshot.data == "admin") { // Use WidgetsBinding to avoid navigation during build WidgetsBinding.instance.addPostFrameCallback((_) { Navigator.pushNamedAndRemoveUntil(context, '/admin', (route) => false); }); // Return loading indicator while redirecting return const Scaffold(body: Center(child: CircularProgressIndicator())); } else { // Route to Home Page for regular users or if role is not admin/not found WidgetsBinding.instance.addPostFrameCallback((_) { Navigator.pushNamedAndRemoveUntil(context, '/home', (route) => false); }); // Return loading indicator while redirecting return const Scaffold(body: Center(child: CircularProgressIndicator())); } }, ); } // --- User Logged Out --- // Show Login Page if no user data return const LoginPage(); }, ); } } // --- PROTECTED ROUTE --- // Ensures user is logged in before accessing a page class ProtectedRoute extends StatelessWidget { final Widget page; const ProtectedRoute({required this.page, super.key}); @override Widget build(BuildContext context) { final authService = Provider.of(context, listen: false); return StreamBuilder( stream: authService.user, builder: (context, snapshot) { // --- Waiting for Auth State --- if (snapshot.connectionState == ConnectionState.waiting) { // Show a loading indicator while checking auth state return const Scaffold( body: Center(child: CircularProgressIndicator()), ); } // --- User Logged In --- if (snapshot.hasData && snapshot.data != null) { // If logged in, show the requested page return page; } // --- User Logged Out --- // If not logged in, redirect to login page. // Use WidgetsBinding.instance.addPostFrameCallback to ensure navigation // happens after the build phase is complete. WidgetsBinding.instance.addPostFrameCallback((_) { // Check if we are already on the login route to prevent infinite loops if (ModalRoute.of(context)?.settings.name != '/login') { Navigator.pushNamedAndRemoveUntil( context, '/login', (route) => false, // Remove all previous routes ); } }); // Return a temporary loading indicator while redirecting // Avoids showing the login page briefly if already logged in but stream hasn't updated yet return const Scaffold(body: Center(child: CircularProgressIndicator())); }, ); } } // --- SPLASH SCREEN --- class SplashScreen extends StatefulWidget { const SplashScreen({super.key}); @override State createState() => _SplashScreenState(); } class _SplashScreenState extends State with SingleTickerProviderStateMixin { late AnimationController _controller; late Animation _animation; @override void initState() { super.initState(); _controller = AnimationController( vsync: this, duration: const Duration(milliseconds: 1500), // Slightly faster fade ); _animation = CurvedAnimation( parent: _controller, curve: Curves.easeOut, // Smoother fade-in ); _controller.forward(); // Navigate after animation completes + a short delay Future.delayed(const Duration(milliseconds: 2000), () { if (mounted) { // Navigate to AuthWrapper which handles login state and routing Navigator.pushReplacementNamed(context, '/login'); } }); } @override void dispose() { _controller.dispose(); super.dispose(); } @override Widget build(BuildContext context) { // Access ThemeProvider safely final themeProvider = Provider.of(context, listen: false); final Color backgroundColor = Theme.of(context).scaffoldBackgroundColor; // Use scaffold background final Color primaryColor = Theme.of(context).colorScheme.primary; return Scaffold( backgroundColor: backgroundColor, body: Center( child: FadeTransition( opacity: _animation, child: ScaleTransition( // Optional: Add subtle scale effect scale: _animation, child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ // Use a placeholder or your actual logo Image.asset( 'assets/mo.png', // Ensure this asset exists height: 150, // Adjust size as needed errorBuilder: (context, error, stackTrace) { // Fallback if image fails to load return Icon(Icons.local_shipping, size: 100, color: primaryColor); }, ), const SizedBox(height: 24), // Text( // Optional: Add app name if desired // 'GoNavi Logistics', // style: TextStyle( // fontSize: 28, // fontWeight: FontWeight.bold, // color: primaryColor, // ), // textAlign: TextAlign.center, // ), ], ), ), ), ), ); } } // --- Placeholder Pages (Replace with your actual implementations) --- class LoginPage extends StatelessWidget { const LoginPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Login')), body: Center(child: ElevatedButton(onPressed: () => Navigator.pushReplacementNamed(context, '/home'), child: const Text('Simulate Login')))); } class RegistrationPage extends StatelessWidget { RegistrationPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Register')), body: const Center(child: Text('Registration Page'))); } class ForgotPasswordPage extends StatelessWidget { const ForgotPasswordPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Forgot Password')), body: const Center(child: Text('Forgot Password Page'))); } class HomePage extends StatelessWidget { const HomePage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Home')), body: Center(child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ const Text('Home Page'), ElevatedButton(onPressed: () => Navigator.pushNamed(context, '/track'), child: const Text('Go to Track Page')), ElevatedButton(onPressed: () => Provider.of(context, listen: false).signOut().then((_) => Navigator.pushNamedAndRemoveUntil(context, '/login', (r) => false)), child: const Text('Sign Out')), ],)), ); } class SettingsPage extends StatelessWidget { const SettingsPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Settings')), body: const Center(child: Text('Settings Page'))); } class ServicesPage extends StatelessWidget { const ServicesPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Services')), body: const Center(child: Text('Services Page'))); } class ProfilePage extends StatelessWidget { const ProfilePage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Profile')), body: const Center(child: Text('Profile Page'))); } class AnalyticsPage extends StatelessWidget { const AnalyticsPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Analytics')), body: const Center(child: Text('Analytics Page'))); } class InventoryPage extends StatelessWidget { const InventoryPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Inventory')), body: const Center(child: Text('Inventory Page'))); } class NotificationsPage extends StatelessWidget { const NotificationsPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Notifications')), body: const Center(child: Text('Notifications Page'))); } class NotificationSettingsPage extends StatelessWidget { const NotificationSettingsPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Notification Settings')), body: const Center(child: Text('Notification Settings Page'))); } class AccountPage extends StatelessWidget { const AccountPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Account')), body: const Center(child: Text('Account Page'))); } class ThemePage extends StatelessWidget { const ThemePage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Theme')), body: const Center(child: Text('Theme Page'))); } class PrivacyPage extends StatelessWidget { const PrivacyPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Privacy')), body: const Center(child: Text('Privacy Page'))); } class SupportPage extends StatelessWidget { const SupportPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Support')), body: const Center(child: Text('Support Page'))); } // --- Placeholder Admin Pages --- namespace screens { // Assuming admin pages are in 'screens' folder class AdminDashboard extends StatelessWidget { AdminDashboard({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Admin Dashboard')), body: Center(child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [ const Text('Admin Dashboard'), ElevatedButton(onPressed: () => Provider.of(context, listen: false).signOut().then((_) => Navigator.pushNamedAndRemoveUntil(context, '/login', (r) => false)), child: const Text('Sign Out')), ],)),); } class AdminControlPage extends StatelessWidget { AdminControlPage({super.key}); @override Widget build(BuildContext context) => Scaffold(appBar: AppBar(title: const Text('Admin Control')), body: const Center(child: Text('Admin Control Page'))); } } // --- Placeholder Services/Providers (Implement actual logic) --- namespace services { class AuthService { // Simulate user stream Stream get user => Stream.value(null).asyncMap((_) async { // In a real app, check Firebase Auth state await Future.delayed(const Duration(milliseconds: 100)); // Simulate async check // return FirebaseAuth.instance.currentUser; // Real implementation return _mockUser; // Simulate logged out initially }); // Simulate getting user role (replace with Firestore/Database call) Future getUserRole(String uid) async { await Future.delayed(const Duration(milliseconds: 50)); // Simulate DB call // Example: Check a predefined admin UID if (uid == 'admin_user_id') return 'admin'; return 'user'; // Default role } // Simulate sign in Future signIn(String email, String password) async { await Future.delayed(const Duration(milliseconds: 500)); // Simulate success - replace with actual Firebase sign in _mockUser = MockUser(uid: password == 'admin' ? 'admin_user_id' : 'regular_user_id'); // Notify listeners (though stream should handle this) // Note: This direct manipulation is for simulation only. Real auth state changes automatically. return _mockUser; } // Simulate sign out Future signOut() async { await Future.delayed(const Duration(milliseconds: 100)); _mockUser = null; // Simulate sign out // In real app: await FirebaseAuth.instance.signOut(); } // Mock user for simulation User? _mockUser; } // Mock User class (replace with actual firebase_auth User) class MockUser implements User { @override final String uid; MockUser({required this.uid}); @override String? get displayName => 'Mock User'; @override String? get email => 'mock@example.com'; @override bool get emailVerified => true; @override bool get isAnonymous => false; @override UserMetadata get metadata => UserMetadata(0, 0); // Provide dummy metadata @override String? get phoneNumber => null; @override String? get photoURL => null; @override List get providerData => []; @override Future reload() async {} @override Future getIdToken([bool forceRefresh = false]) async => 'mock_token'; @override String? get tenantId => null; // Add tenantId getter @override Future updateDisplayName(String? displayName) async {} @override Future updateEmail(String? email) async {} @override Future updatePassword(String? password) async {} @override Future updatePhoneNumber(PhoneAuthCredential? credential) async {} @override Future updatePhotoURL(String? photoURL) async {} @override Future sendEmailVerification([ActionCodeSettings? actionCodeSettings]) async {} @override Future linkWithCredential(AuthCredential? credential) async {} @override Future reauthenticateWithCredential(AuthCredential? credential) async => throw UnimplementedError(); // Provide implementation if needed @override Future unlink(String? providerId) async {} @override Future verifyBeforeUpdateEmail(String? newEmail, [ActionCodeSettings? actionCodeSettings]) async {} @override Map toJson() => {}; // Add toJson method @override Future delete() async {} // Add delete method @override IdTokenResult? get idTokenResult => null; // Add idTokenResult getter @override MultiFactor get multiFactor => throw UnimplementedError(); // Add multiFactor getter } class NotificationService { static Future initialize() async { // Initialize notification service (e.g., Firebase Messaging) await Future.delayed(const Duration(milliseconds: 50)); // Simulate init print("Notification Service Initialized (Mock)"); } } } namespace providers { class ThemeProvider with ChangeNotifier { ThemeMode _themeMode = ThemeMode.system; // Default to system theme ThemeMode get themeMode => _themeMode; bool get isDarkMode { if (_themeMode == ThemeMode.system) { // Adapt based on system brightness // You might need WidgetsBinding.instance.window.platformBrightness // Be cautious using this directly in build methods. // Consider getting brightness once or using a dedicated context. final brightness = WidgetsBinding.instance.platformDispatcher.platformBrightness; return brightness == Brightness.dark; } else { return _themeMode == ThemeMode.dark; } } // Define your light theme ThemeData get lightTheme => ThemeData( brightness: Brightness.light, colorScheme: ColorScheme.fromSeed( seedColor: Colors.blue, // Example seed color brightness: Brightness.light, ), useMaterial3: true, // Add other light theme customizations appBarTheme: AppBarTheme( backgroundColor: Colors.blue[600], foregroundColor: Colors.white, ), cardColor: Colors.white, hintColor: Colors.grey[600], ); // Define your dark theme ThemeData get darkTheme => ThemeData( brightness: Brightness.dark, colorScheme: ColorScheme.fromSeed( seedColor: Colors.blue, // Example seed color brightness: Brightness.dark, ), useMaterial3: true, // Add other dark theme customizations appBarTheme: AppBarTheme( backgroundColor: Colors.grey[900], foregroundColor: Colors.white, ), cardColor: Colors.grey[850], hintColor: Colors.grey[500], ); void setTheme(ThemeMode themeMode) { if (_themeMode != themeMode) { _themeMode = themeMode; notifyListeners(); } } } } // --- Required interfaces from firebase_auth --- // Add these minimal implementations if not fully mocking firebase_auth abstract class UserCredential { User? get user; AuthCredential? get credential; // Add other fields/methods as required by your usage } abstract class AuthCredential { String get providerId; String? get signInMethod; // Add other fields/methods as required by your usage } abstract class ActionCodeSettings { // Define fields/methods as needed, e.g., url, handleCodeInApp, etc. } abstract class PhoneAuthCredential extends AuthCredential { String? get verificationId; String? get smsCode; } abstract class UserInfo { String? get displayName; String? get email; String? get phoneNumber; String? get photoURL; String get providerId; String get uid; } abstract class UserMetadata { final int creationTimestamp; final int lastSignInTimestamp; UserMetadata(this.creationTimestamp, this.lastSignInTimestamp); } abstract class IdTokenResult { String? get token; // Add other fields like expirationTime, authTime, etc. } abstract class MultiFactor { Future enroll(MultiFactorAssertion assertion, {String? displayName}); Future getSession(); List get enrolledFactors; Future unenroll(String factorUid); } abstract class MultiFactorAssertion { String get factorId; } abstract class MultiFactorSession { String get id; } abstract class MultiFactorInfo { String? get displayName; DateTime? get enrollmentTime; String get factorId; String get uid; } name: gonavi description: "A new Flutter project." publish_to: 'none' # Remove this line if you wish to publish to pub.dev version: 1.0.0+1 environment: sdk: '>=3.2.3 <4.0.0' # Updated SDK constraint dependencies: flutter: sdk: flutter flutter_localizations: # Added for localization sdk: flutter cupertino_icons: ^1.0.6 provider: ^6.0.0 # State management firebase_core: ^2.27.0 # Required for Firebase products firebase_auth: ^4.17.8 # Firebase Authentication # http: ^1.0.0 # Uncomment if making real HTTP requests # intl: ^0.19.0 # Uncomment if formatting dates/numbers dev_dependencies: flutter_test: sdk: flutter flutter_lints: ^3.0.0 # Updated linter rules flutter: uses-material-design: true # To add assets to your application, add an assets section, like this: assets: - assets/mo.png # Ensure this line exists and the path is correct # - images/a_dot_ham.jpeg # An image asset can refer to one or more resolution-specific "variants", see # https://flutter.dev/assets-and-images/#resolution-aware # For details regarding adding assets from package dependencies, see # https://flutter.dev/assets-and-images/#from-packages # To add custom fonts to your application, add a fonts section here, # in this "flutter" section. Each entry in this list should have a # "family" key with the font family name, and a "fonts" key with a # list giving the asset and other descriptors for the font. For # example: # fonts: # - family: Schyler # fonts: # - asset: fonts/Schyler-Regular.ttf # - asset: fonts/Schyler-Italic.ttf # style: italic # - family: Trajan Pro # fonts: # - asset: fonts/TrajanPro.ttf # - asset: fonts/TrajanPro_Bold.ttf # weight: 700 # # For details regarding fonts from package dependencies, # see https://flutter.dev/custom-fonts/#from-packages # This is a placeholder. # You need to add your actual 'mo.png' image file to the 'assets' folder. # Create an 'assets' folder in the root of your project if it doesn't exist. # Then place your image file inside it. # For now, this file will be empty, but the build system needs it referenced. import 'package:flutter/material.dart'; import 'package:flutter/scheduler.dart'; // Import SchedulerBinding class ThemeProvider with ChangeNotifier { ThemeMode _themeMode = ThemeMode.system; ThemeMode get themeMode => _themeMode; bool get isDarkMode { if (_themeMode == ThemeMode.system) { // Use SchedulerBinding to get platform brightness safely var brightness = SchedulerBinding.instance.platformDispatcher.platformBrightness; return brightness == Brightness.dark; } else { return _themeMode == ThemeMode.dark; } } // Define your light theme ThemeData get lightTheme => ThemeData( brightness: Brightness.light, colorScheme: ColorScheme.fromSeed( seedColor: Colors.deepPurple, // Example seed color brightness: Brightness.light, primary: Colors.deepPurple, secondary: Colors.deepOrange, // Define other colors as needed ), useMaterial3: true, appBarTheme: AppBarTheme( backgroundColor: Colors.deepPurple[600], foregroundColor: Colors.white, ), cardColor: Colors.white, hintColor: Colors.grey[600], // Add other light theme customizations ); // Define your dark theme ThemeData get darkTheme => ThemeData( brightness: Brightness.dark, colorScheme: ColorScheme.fromSeed( seedColor: Colors.deepPurple, // Example seed color brightness: Brightness.dark, primary: Colors.deepPurple[300], // Lighter primary for dark mode secondary: Colors.deepOrange[300], // Lighter secondary // Define other colors as needed ), useMaterial3: true, appBarTheme: AppBarTheme( backgroundColor: Colors.grey[900], foregroundColor: Colors.white, ), cardColor: Colors.grey[850], hintColor: Colors.grey[500], // Add other dark theme customizations ); void setTheme(ThemeMode themeMode) { if (_themeMode != themeMode) { _themeMode = themeMode; notifyListeners(); } } } import 'dart:async'; import 'package:firebase_auth/firebase_auth.dart'; // Import necessary models or helpers if needed, e.g., for roles: // import 'package:cloud_firestore/cloud_firestore.dart'; class AuthService { final FirebaseAuth _firebaseAuth = FirebaseAuth.instance; // Optional: Firestore instance if roles are stored there // final FirebaseFirestore _firestore = FirebaseFirestore.instance; // Stream to listen for authentication changes Stream get user => _firebaseAuth.authStateChanges(); // Get current user synchronously (can be null) User? get currentUser => _firebaseAuth.currentUser; // Sign in with Email and Password Future signInWithEmailAndPassword(String email, String password) async { try { UserCredential userCredential = await _firebaseAuth.signInWithEmailAndPassword( email: email, password: password, ); return userCredential; } on FirebaseAuthException catch (e) { // Handle specific errors (e.g., invalid credentials, user not found) print("Sign-in error: ${e.code} - ${e.message}"); // Optionally re-throw or return a custom error/null return null; } catch (e) { print("An unexpected error occurred during sign-in: $e"); return null; } } // Register with Email and Password Future createUserWithEmailAndPassword(String email, String password) async { try { UserCredential userCredential = await _firebaseAuth.createUserWithEmailAndPassword( email: email, password: password, ); // Optional: Assign a default role to the new user in Firestore here // await _assignDefaultRole(userCredential.user?.uid); return userCredential; } on FirebaseAuthException catch (e) { // Handle specific errors (e.g., email already in use, weak password) print("Registration error: ${e.code} - ${e.message}"); return null; } catch (e) { print("An unexpected error occurred during registration: $e"); return null; } } // Sign out Future signOut() async { try { await _firebaseAuth.signOut(); } catch (e) { print("Error signing out: $e"); // Handle error appropriately } } // Send Password Reset Email Future sendPasswordResetEmail(String email) async { try { await _firebaseAuth.sendPasswordResetEmail(email: email); return true; // Indicate success } on FirebaseAuthException catch (e) { print("Password reset error: ${e.code} - ${e.message}"); return false; // Indicate failure } catch (e) { print("An unexpected error occurred sending password reset email: $e"); return false; // Indicate failure } } // Get User Role (Example using Firestore - adapt if using Realtime DB or custom claims) Future getUserRole(String? uid) async { if (uid == null) return null; // No user logged in // --- Placeholder Implementation --- // Replace this with your actual role fetching logic (e.g., Firestore) print("Fetching role for UID: $uid (Using Placeholder Logic)"); await Future.delayed(const Duration(milliseconds: 50)); // Simulate network delay // Example: Check if UID matches a known admin UID if (uid == 'REPLACE_WITH_YOUR_ACTUAL_ADMIN_UID') { // <-- IMPORTANT: Replace this print("Role identified as: admin (Placeholder)"); return 'admin'; } else { print("Role identified as: user (Placeholder)"); return 'user'; // Default role } /* --- Example Firestore Implementation (Uncomment and adapt) --- try { // Assumes you have a 'users' collection where each document ID is the user's UID // and each document has a 'role' field. DocumentSnapshot userDoc = await _firestore.collection('users').doc(uid).get(); if (userDoc.exists && userDoc.data() != null) { Map data = userDoc.data() as Map; return data['role'] as String? ?? 'user'; // Default to 'user' if role field is missing } else { print("User document not found for UID: $uid. Assigning default role 'user'."); return 'user'; // User document doesn't exist, assign default role } } catch (e) { print("Error fetching user role from Firestore: $e"); return null; // Indicate error fetching role } */ } // --- Optional: Helper to assign default role (Example for Firestore) --- /* Future _assignDefaultRole(String? uid) async { if (uid == null) return; try { await _firestore.collection('users').doc(uid).set({ 'role': 'user', 'createdAt': FieldValue.serverTimestamp(), // Optional: track creation time // Add other default user fields if needed }, SetOptions(merge: true)); // Use merge: true to avoid overwriting existing data if any } catch (e) { print("Error assigning default role: $e"); } } */ } // --- Add minimal implementations for firebase_auth interfaces if needed --- // (These might be required if you are mocking parts of firebase_auth elsewhere, // but usually not needed when using the actual package like above) // abstract class UserCredential { User? get user; AuthCredential? get credential; } // abstract class AuthCredential { String get providerId; String? get signInMethod; } // abstract class ActionCodeSettings { } // abstract class PhoneAuthCredential extends AuthCredential { String? get verificationId; String? get smsCode; } // abstract class UserInfo { String? get displayName; String? get email; String? get phoneNumber; String? get photoURL; String get providerId; String get uid; } // abstract class UserMetadata { final int creationTimestamp; final int lastSignInTimestamp; UserMetadata(this.creationTimestamp, this.lastSignInTimestamp); } // abstract class IdTokenResult { String? get token; } // abstract class MultiFactor { Future enroll(MultiFactorAssertion assertion, {String? displayName}); Future getSession(); List get enrolledFactors; Future unenroll(String factorUid); } // abstract class MultiFactorAssertion { String get factorId; } // abstract class MultiFactorSession { String get id; } // abstract class MultiFactorInfo { String? get displayName; DateTime? get enrollmentTime; String get factorId; String get uid; } // Placeholder for Notification Service implementation // (e.g., using firebase_messaging) class NotificationService { static Future initialize() async { // TODO: Implement notification initialization (e.g., request permissions, setup handlers) print("Mock Notification Service Initialized."); // Example using firebase_messaging (add dependency first): // FirebaseMessaging messaging = FirebaseMessaging.instance; // NotificationSettings settings = await messaging.requestPermission( // alert: true, // badge: true, // sound: true, // ); // print('User granted permission: ${settings.authorizationStatus}'); // FirebaseMessaging.onMessage.listen((RemoteMessage message) { ... }); // FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler); } // Example background handler (needs to be a top-level function) // static Future _firebaseMessagingBackgroundHandler(RemoteMessage message) async { // await Firebase.initializeApp(); // Ensure Firebase is initialized for background service // print("Handling a background message: ${message.messageId}"); // } } This sets up: 1. **`track_page.dart`**: A new page with an input field, a track button, and a section to display results using a `FutureBuilder`. It includes basic styling and uses a `Stepper` for the history. 2. **`models/shipment_model.dart`**: Defines the `Shipment` and `TrackingEvent` classes to structure the data. 3. **`services/tracking_service.dart`**: A service class with a `fetchShipmentDetails` method that currently returns mock `Shipment` data after a simulated delay. **You will need to replace the mock logic here with your actual API call.** 4. **`main.dart`**: Updated to include the route `/track` protected by `ProtectedRoute` and ensure necessary imports. Placeholder pages and services are included for the app to run. 5. **`pubspec.yaml`**: Added `flutter_localizations` and ensured `assets/mo.png` is listed. 6. **`assets/mo.png`**: A placeholder file reference. **Make sure you create an `assets` folder and add your actual `mo.png` image file there.** 7. **`providers/theme_provider.dart`**: Created a separate file for the `ThemeProvider` for better organization. 8. **`services/auth_service.dart`**: Created a separate file for the `AuthService`, using the actual `firebase_auth` package. **Remember to replace the placeholder admin UID check in `getUserRole` with your actual logic (e.g., Firestore lookup).** 9. **`services/notification_service.dart`**: Created a placeholder file for the `NotificationService`. Now, when you run the app, you can navigate to the "Track Shipment" page (e.g., via a button on the home page), enter any text in the tracking field, press "Track", and see the mock shipment details displayed. Enter "notfound" (case-insensitive) to simulate an error.