/// <summary>
/// Adds a coupon to the Cart.
/// </summary>
/// <param name="param"></param>
/// <returns>The lightweight CartViewModel</returns>
public virtual async Task <CartViewModel> AddCouponAsync(CouponParam param)
{
var cart = await CartRepository.AddCouponAsync(param).ConfigureAwait(false);
await CartRepository.RemoveCouponsAsync(new RemoveCouponsParam
{
CartName = param.CartName,
CouponCodes = GetInvalidCouponsCode(cart.Coupons).ToList(),
CustomerId = param.CustomerId,
Scope = param.Scope
}).ConfigureAwait(false);
var vmParam = new CreateCartViewModelParam
{
Cart = cart,
CultureInfo = param.CultureInfo,
IncludeInvalidCouponsMessages = true,
BaseUrl = param.BaseUrl
};
var viewModel = await CreateCartViewModelAsync(vmParam).ConfigureAwait(false);
AddSuccessMessageIfRequired(param, viewModel, param.CultureInfo);
return(viewModel);
}
