RhythmBox/lib/shells/nav_shell.dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:go_router/go_router.dart';
import 'package:rhythm_box/widgets/player/bottom_player.dart';

class Destination {
  const Destination(this.title, this.page, this.icon);
  final String title;
  final String page;
  final IconData icon;
}

class NavShell extends StatefulWidget {
  final Widget child;

  const NavShell({super.key, required this.child});

  @override
  State<NavShell> createState() => _NavShellState();
}

class _NavShellState extends State<NavShell> {
  int _focusDestination = 0;

  final List<Destination> _allDestinations = <Destination>[
    Destination('explore'.tr, 'explore', Icons.explore),
    Destination('search'.tr, 'search', Icons.search),
    Destination('settings'.tr, 'settings', Icons.settings),
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: widget.child,
      bottomNavigationBar: Material(
        elevation: 2,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            const BottomPlayer(key: Key('app-wide-bottom-player')),
            const Divider(height: 0.3, thickness: 0.3),
            BottomNavigationBar(
              elevation: 0,
              showUnselectedLabels: false,
              currentIndex: _focusDestination,
              items: _allDestinations
                  .map((x) => BottomNavigationBarItem(
                        icon: Icon(x.icon),
                        label: x.title,
                      ))
                  .toList(),
              onTap: (value) {
                GoRouter.of(context).goNamed(_allDestinations[value].page);
                setState(() => _focusDestination = value);
              },
            ),
          ],
        ),
      ),
    );
  }
}