Bottom nav bar

lib/home.dart

@@ -1,12 +1,31 @@
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/material.dart';
-import 'package:flutterfire_ui/auth.dart';
-
-import 'home.dart';
 
 class HomeScreen extends StatelessWidget {
   const HomeScreen({super.key});
 
+  @override
+  Widget build(BuildContext context) {
+    return const StatefulHome();
+  }
+}
+
+class StatefulHome extends StatefulWidget {
+  const StatefulHome({super.key});
+
+  @override
+  State<StatefulHome> createState() => _StatefulHomeState();
+}
+
+class _StatefulHomeState extends State<StatefulHome> {
+  int _selectedIndex = 0;
+
+  void _onItemTapped(int index) {
+    setState(() {
+      _selectedIndex = index;
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -27,6 +46,32 @@ class HomeScreen extends StatelessWidget {
           ],
         ),
       ),
+      bottomNavigationBar: BottomNavigationBar(
+        type: BottomNavigationBarType.fixed,
+        backgroundColor: Colors.red,
+        selectedItemColor: Colors.black,
+        unselectedItemColor: Colors.black54,
+        items: const <BottomNavigationBarItem>[
+          BottomNavigationBarItem(
+            icon: Icon(Icons.shopping_cart),
+            label: 'Buy',
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.attach_money),
+            label: 'Sell',
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.person),
+            label: 'Profile',
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.settings),
+            label: 'Settings',
+          ),
+        ],
+        currentIndex: _selectedIndex,
+        onTap: _onItemTapped,
+      ),
     );
   }
 }