// Import necessary packages
import 'package:firebase_analytics/firebase_analytics.dart';
import 'package:firebase_analytics_example_new/firebase_options.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';

// Main function
void main() async {
 // Ensure the widget tree is initialized before Firebase
 WidgetsFlutterBinding.ensureInitialized();

 // Initialize Firebase with default options
 await Firebase.initializeApp(
   options: DefaultFirebaseOptions.currentPlatform,
 );

 // Run the main Flutter app
 runApp(const MainApp());
}

// MainApp widget
class MainApp extends StatefulWidget {
 // Constructor
 const MainApp({super.key});

 // Create state for MainApp
 @override
 _MainAppState createState() => _MainAppState();
}

// State for MainApp
class _MainAppState extends State<MainApp> {
 // Initialize Firebase Analytics
 final FirebaseAnalytics analytics = FirebaseAnalytics.instance;

 // Counter variable
 int _counter = 0;

 // Function to increment counter and send analytics event
 void _incrementCounter() {
   // Increment counter
   setState(() {
     _counter++;
   });

   // Send analytics event
   _sendAnalyticsEvent();
 }

 // Function to send analytics event
 void _sendAnalyticsEvent() async {
   // Log event with Firebase Analytics
   await analytics.logEvent(
     name: 'counter_incremented',
     parameters: <String, dynamic>{
       'counter': _counter,
     },
   );
 }

 // Build function for widget
 @override
 Widget build(BuildContext context) {
   // Return MaterialApp widget
   return MaterialApp(
     home: Scaffold(
       body: Center(
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
             // Display text
             const Text(
               'You have pushed the button this many times:',
             ),
             // Display counter
             Text(
               '$_counter',
               style: Theme.of(context).textTheme.headlineMedium,
             ),
           ],
         ),
       ),
       // Floating action button to increment counter
       floatingActionButton: FloatingActionButton(
         onPressed: _incrementCounter,
         tooltip: 'Increment',
         child: const Icon(Icons.add),
       ),
     ),
     // Add Firebase Analytics observer
     navigatorObservers: [
       FirebaseAnalyticsObserver(analytics: analytics),
     ],
   );
 }
}