import 'dart:async';

import 'package:flutter/material.dart';
import 'package:firebase_auth/firebase_auth.dart';

import '../screens/login_page.dart';
import '../screens/dashboard_page.dart';

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

  @override
  State<SplashPage> createState() => _SplashPageState();
}

class _SplashPageState extends State<SplashPage> {
  @override
  void initState() {
    super.initState();
    _checkLogin();
  }

  void _checkLogin() {
    Timer(const Duration(seconds: 2), () {
      final user = FirebaseAuth.instance.currentUser;

      if (user != null) {
        Navigator.pushReplacement(
          context,
          MaterialPageRoute(builder: (_) => const DashboardPage()),
        );
      } else {
        Navigator.pushReplacement(
          context,
          MaterialPageRoute(builder: (_) => const LoginPage()),
        );
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.green,

      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            const Icon(Icons.air, size: 100, color: Colors.white),

            const SizedBox(height: 20),

            const Text(
              'Smart Air Quality',
              style: TextStyle(
                color: Colors.white,
                fontSize: 26,
                fontWeight: FontWeight.bold,
              ),
            ),

            const SizedBox(height: 10),

            const Text(
              'Monitoring Kualitas Udara',
              style: TextStyle(color: Colors.white70, fontSize: 14),
            ),

            const SizedBox(height: 50),

            const CircularProgressIndicator(color: Colors.white),
          ],
        ),
      ),
    );
  }
}