import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:progetto_m335_flutter/pages/LoginView.dart';
import 'package:progetto_m335_flutter/pages/RegisterView.dart';
import 'pages/TodayView.dart';
import 'pages/InboxView.dart';
import 'pages/NotesView.dart';



class Navigation extends StatefulWidget {
  const Navigation({super.key});

  @override
  State<Navigation> createState() => _NavigationState();
}

class _NavigationState extends State<Navigation> {

  int _selectedIndex = 1;
  static const List<Widget> _widgetOptions = <Widget>[
    LoginView(),
    RegisterView(),
    TodayView(),
    InboxView(),
    NotesView(),
  ];
  FirebaseAuth auth = FirebaseAuth.instance;

  void _onItemTapped(int index) {
    setState(() {
      _selectedIndex = index;
    });
  }

  @override
  void initState() {
    FirebaseAuth.instance
        .authStateChanges()
        .listen((User? user) {
      if (user == null) {
        print('User is currently signed out!');
      } else {
        print('User is signed in!');
      }
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("BottomNavBar"),
      ),
      body: Center(child: _widgetOptions.elementAt(_selectedIndex)),
      bottomNavigationBar: BottomNavigationBar(
        items: const <BottomNavigationBarItem>[
          BottomNavigationBarItem(icon: Icon(Icons.login), label: "Login"),
          BottomNavigationBarItem(icon: Icon(Icons.app_registration), label: "Register"),
          BottomNavigationBarItem(
              icon: Icon(Icons.calendar_today), label: "today"),
          BottomNavigationBarItem(icon: Icon(Icons.inbox), label: "Inbox"),
          BottomNavigationBarItem(icon: Icon(Icons.note), label: "Notes"),
        ],
        currentIndex: _selectedIndex,
        onTap: _onItemTapped,
        type: BottomNavigationBarType.fixed,
      ),
    );
  }
}