feat: Configure Firebase initialization with platform-specific options and add URL types for Google authentication

lib/main.dart

@@ -4,10 +4,11 @@ import 'package:firebase_core/firebase_core.dart';
 import 'package:travel_mate/blocs/balance/balance_bloc.dart';
 import 'package:travel_mate/blocs/expense/expense_bloc.dart';
 import 'package:travel_mate/blocs/message/message_bloc.dart';
+import 'package:travel_mate/firebase_options.dart';
 import 'package:travel_mate/services/balance_service.dart';
 import 'package:travel_mate/services/error_service.dart';
 import 'package:flutter_dotenv/flutter_dotenv.dart';
-import 'package:travel_mate/services/expense_service.dart'; 
+import 'package:travel_mate/services/expense_service.dart';
 import 'blocs/auth/auth_bloc.dart';
 import 'blocs/auth/auth_event.dart';
 import 'blocs/theme/theme_bloc.dart';
@@ -31,19 +32,19 @@ import 'pages/signup.dart';
 import 'pages/resetpswd.dart';
 
 /// Entry point of the Travel Mate application.
-/// 
+///
 /// This function initializes Flutter widgets, loads environment variables,
 /// initializes Firebase, and starts the application.
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await dotenv.load(fileName: ".env");
-  await Firebase.initializeApp();
+  await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
 
   runApp(const MyApp());
 }
 
 /// The root widget of the Travel Mate application.
-/// 
+///
 /// This widget sets up the BLoC providers, repositories, and MaterialApp
 /// configuration. It manages the application's theme, routing, and global state.
 class MyApp extends StatelessWidget {
@@ -51,7 +52,7 @@ class MyApp extends StatelessWidget {
   const MyApp({super.key});
 
   /// Builds the widget tree for the application.
-  /// 
+  ///
   /// Sets up repository providers for dependency injection, BLoC providers
   /// for state management, and configures the MaterialApp with themes and routing.
   @override
@@ -105,7 +106,6 @@ class MyApp extends StatelessWidget {
             expenseRepository: context.read<ExpenseRepository>(),
           ),
         ),
-        
       ],
       child: MultiBlocProvider(
         providers: [
@@ -125,22 +125,17 @@ class MyApp extends StatelessWidget {
           ),
           // Trip BLoC for managing travel trips
           BlocProvider(
-            create: (context) =>
-                TripBloc(context.read<TripRepository>()),
+            create: (context) => TripBloc(context.read<TripRepository>()),
           ),
           // User BLoC for managing user data
           BlocProvider(create: (context) => UserBloc()),
           // Message BLoC for managing in-app messaging
-          BlocProvider(
-            create: (context) => MessageBloc(),
-          ),
+          BlocProvider(create: (context) => MessageBloc()),
           // Account BLoC for managing user account settings
           BlocProvider(
-            create: (context) => AccountBloc(
-              context.read<AccountRepository>(),
-            ),
+            create: (context) => AccountBloc(context.read<AccountRepository>()),
           ),
-          
+
           // Expense BLoC for managing trip expenses
           BlocProvider<ExpenseBloc>(
             create: (context) => ExpenseBloc(
@@ -156,7 +151,6 @@ class MyApp extends StatelessWidget {
               expenseRepository: context.read<ExpenseRepository>(),
             ),
           ),
-          
         ],
         child: BlocBuilder<ThemeBloc, ThemeState>(
           builder: (context, themeState) {