import 'package:flutter/material.dart';

import 'clients_screen.dart';
import 'recompenses_screen.dart';
import 'reglages_screen.dart';
import 'scan_screen.dart';

/// Coquille principale : 4 onglets + barre de navigation.
class HomeShell extends StatefulWidget {
  const HomeShell({super.key});

  @override
  State<HomeShell> createState() => _HomeShellState();
}

class _HomeShellState extends State<HomeShell> {
  int _index = 0;

  void _allerScanner() => setState(() => _index = 1);

  @override
  Widget build(BuildContext context) {
    final pages = [
      ClientsScreen(onAllerScanner: _allerScanner),
      ScanScreen(active: _index == 1),
      const RecompensesScreen(),
      const ReglagesScreen(),
    ];
    return Scaffold(
      body: IndexedStack(index: _index, children: pages),
      bottomNavigationBar: NavigationBar(
        selectedIndex: _index,
        height: 68,
        labelBehavior: NavigationDestinationLabelBehavior.alwaysShow,
        onDestinationSelected: (i) => setState(() => _index = i),
        destinations: const [
          NavigationDestination(
            icon: Icon(Icons.people_alt_outlined),
            selectedIcon: Icon(Icons.people_alt),
            label: 'Clients',
          ),
          NavigationDestination(
            icon: Icon(Icons.qr_code_scanner_outlined),
            selectedIcon: Icon(Icons.qr_code_scanner),
            label: 'Scanner',
          ),
          NavigationDestination(
            icon: Icon(Icons.card_giftcard_outlined),
            selectedIcon: Icon(Icons.card_giftcard),
            label: 'Récompenses',
          ),
          NavigationDestination(
            icon: Icon(Icons.settings_outlined),
            selectedIcon: Icon(Icons.settings),
            label: 'Réglages',
          ),
        ],
      ),
    );
  }
}