Using IFeatureManager to access feature flags

HomeController.cs

using Microsoft.FeatureManagement.Mvc;

namespace MusicStore.Web.Controllers
{
    public class HomeController : Controller
    {
        private readonly ILogger<HomeController> _logger;
        private readonly IAlbumService _albumService;
        private readonly IFeatureManager _featureManager;

        public HomeController(IAlbumService albumService, IFeatureManagerSnapshot featureManager, ILogger<HomeController> logger)
        {
            _albumService = albumService;
            _featureManager = featureManager;
            _logger = logger;
        }

        public async Task<IActionResult> Index()
        {
            var vm = new HomeViewModel();
            vm.Featured = _albumService.AllAlbums();
            
            // Check if the UserSuggestion feature is enabled.
            if (await _featureManager.IsEnabledAsync(Features.UserSuggestions))
            {
                vm.Suggestions = _albumService.UserPreferenceAlbums();
            }

            return View(vm);
        }
        
        ...
    }
}