import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../services/mqtt_service.dart';
import 'monitoring_screen.dart';
import 'control_settings_screen.dart';
import 'recording_screen.dart';
import 'settings_screen.dart';

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

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  int _currentIndex = 0;

  @override
  void initState() {
    super.initState();
    // Listen for MQTT connection results to show notifications
    WidgetsBinding.instance.addPostFrameCallback((_) {
      final mqtt = Provider.of<MqttService>(context, listen: false);
      mqtt.onConnectionResult = (message, isSuccess) {
        if (mounted) {
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(
              content: Text(message),
              backgroundColor: isSuccess ? Colors.green.withOpacity(0.8) : Colors.redAccent,
              duration: const Duration(seconds: 3),
            ),
          );
        }
      };
    });
  }

  final List<Widget> _screens = [
    const MonitoringScreen(),
    const ControlSettingsScreen(),
    const RecordingScreen(),
    const SettingsScreen(),
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: _screens[_currentIndex],
      bottomNavigationBar: BottomNavigationBar(
        currentIndex: _currentIndex,
        onTap: (index) => setState(() => _currentIndex = index),
        type: BottomNavigationBarType.fixed,
        backgroundColor: Colors.black,
        selectedItemColor: Colors.green,
        unselectedItemColor: Colors.grey,
        showSelectedLabels: false,
        showUnselectedLabels: false,
        items: const [
          BottomNavigationBarItem(icon: Icon(Icons.grid_view), label: 'Monitoring'),
          BottomNavigationBarItem(icon: Icon(Icons.build), label: 'Control'),
          BottomNavigationBarItem(icon: Icon(Icons.access_time), label: 'Recording'),
          BottomNavigationBarItem(icon: Icon(Icons.person), label: 'Profile'),
        ],
      ),
    );
  }
}