builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme).AddCookie();

builder.Services.AddAuthorization(options =>
{
    //Claim is required for this policy is UserId if any user have Claim Named UserId and Value 1,2,3,4,5 then this will work otherwise this will not give you the access 
    options.AddPolicy("SuperUser", policy => policy.RequireClaim("UserId", "1", "2", "3", "4", "5"));
});

builder.Services.AddSingleton<IAuthorizationHandler, SalaryHandler>();

app.UseAuthentication();
app.UseAuthorization();

if (username == "admin" && password == "dotnet")
            {
            //if i change the UserId to 6 it cann't access Privacy method Because we have registerd A Policy With a claim named UserId in Program/startup.cs
                var identity = new ClaimsIdentity(new[] { new Claim("UserId", "1") }, CookieAuthenticationDefaults.AuthenticationScheme);
                var principle = new ClaimsPrincipal(identity);
                var login = HttpContext.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, principle);
                return RedirectToAction("Index", "Home");
            }

[Authorize(Policy = "SuperUser")]
public IActionResult Privacy()
{
  return View();
}