import 'package:flutter/material.dart';

import 'etiquettes_screen.dart';
import 'produits_screen.dart';
import 'scan_screen.dart';

/// Coquille principale : contient les 3 onglets et la barre de navigation.
class HomeShell extends StatefulWidget {
  const HomeShell({super.key});

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

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

  @override
  Widget build(BuildContext context) {
    final pages = [
      ProduitsScreen(onAllerScanner: () => setState(() => _index = 1)),
      ScanScreen(active: _index == 1),
      const EtiquettesScreen(),
    ];
    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.inventory_2_outlined),
            selectedIcon: Icon(Icons.inventory_2),
            label: 'Produits',
          ),
          NavigationDestination(
            icon: Icon(Icons.qr_code_scanner_outlined),
            selectedIcon: Icon(Icons.qr_code_scanner),
            label: 'Scanner',
          ),
          NavigationDestination(
            icon: Icon(Icons.print_outlined),
            selectedIcon: Icon(Icons.print),
            label: 'Étiquettes',
          ),
        ],
      ),
    );
  }
}