public async Task <IActionResult> AddToCart([FromBody] AddToCartRequest request)
{
var login = jwtHelper.GetClaimsFromToken()
.Claims.Single(x => x.Type == "login")
.Value;
await cart.AddPositionToCart(login, request.BookId);
return(Created("http://localhost:49194/api/Cart",
new CreatedResponse {
Message = "Resource added propperly."
}));
}