gistfile1.cs

public class HomeController : Controller
{
    private readonly IAppCookies _cookies;

    public HomeController(IAppCookies cookies)
    {
        _cookies = cookies;
    }

    public ActionResult Index()
    {
        DateTime currentTime = DateTime.Now;

        IndexViewModel viewModel = new IndexViewModel
        {
            CurrentTime = currentTime,
            LastVisit = (_cookies.LastVisit ?? currentTime),
            UserEmail = _cookies.UserEmail
        };

        _cookies.LastVisit = currentTime;

        return View(viewModel);
    }

    public class IndexViewModel
    {
        public string UserEmail { get; set; }
        public DateTime LastVisit { get; set; }
        public DateTime CurrentTime { get; set; }
    }
}