Cambios para pwa

lib/main.dart

@@ -1,9 +1,10 @@
+import 'dart:html' as html;
 import 'package:flutter/material.dart';
+import 'package:google_fonts/google_fonts.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:crcivan/BloC/contenedores_event.dart';
 import '../pages/my_home_page.dart';
 
-
 void main() {
   runApp(
     BlocProvider(
@@ -13,18 +14,68 @@ void main() {
   );
 }
 
-class MyApp extends StatelessWidget {
+class MyApp extends StatefulWidget {
   const MyApp({super.key});
 
+  @override
+  _MyAppState createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  html.BeforeInstallPromptEvent? deferredPrompt;
+
+  @override
+  void initState() {
+    super.initState();
+    _detectInstallPrompt();
+  }
+
+  void _detectInstallPrompt() {
+    html.window.addEventListener('beforeinstallprompt', (event) {
+      event.preventDefault(); 
+      setState(() {
+        deferredPrompt = event as html.BeforeInstallPromptEvent;
+      });
+    });
+  }
+
+  void _showInstallDialog() {
+    if (deferredPrompt != null) {
+      showDialog(
+        context: context,
+        builder: (context) => AlertDialog(
+          title: Text("Instalar CR-Civán"),
+          content: Text("Añade esta app a tu pantalla de inicio para una mejor experiencia."),
+          actions: [
+            TextButton(
+              onPressed: () {
+                deferredPrompt!.prompt();
+                deferredPrompt = null;
+                Navigator.of(context).pop();
+              },
+              child: Text("Instalar"),
+            ),
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(),
+              child: Text("Más tarde"),
+            ),
+          ],
+        ),
+      );
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
+      title: 'CR-Civán',
       theme: ThemeData(
         colorScheme: ColorScheme.fromSeed(seedColor: const Color.fromARGB(255, 0, 67, 168)),
         useMaterial3: true,
       ),
-      home: const MyHomePage(title: 'COMUNIDAD DE REGANTES DE CIVÁN'),
+      home: MyHomePage(
+        title: 'COMUNIDAD DE REGANTES DE CIVÁN'
+      ),
     );
   }
 }