/// <summary>
/// Get a user's cart from the database
/// </summary>
/// <param name="id">Id of cartItem to search for</param>
/// <returns>Successful result of specified cartItem</returns>
public async Task <Cart> GetUserCart(string userId)
{
var cart = await _context.Cart.Where(x => x.UserId == userId).FirstOrDefaultAsync();
if (cart != null)
{
cart.CartItems = await _cartItem.GetUserCartItems(cart.Id);
}
return(cart);
}