public override async Task <IActionResult> SelectShippingMethod(string shippingoption, IFormCollection form)
{
//validation
if (_orderSettings.CheckoutDisabled)
{
return(RedirectToRoute("ShoppingCart"));
}
var cart = await _shoppingCartService.GetShoppingCartAsync(await _workContext.GetCurrentCustomerAsync(), ShoppingCartType.ShoppingCart, (await _storeContext.GetCurrentStoreAsync()).Id);
if (!cart.Any())
{
return(RedirectToRoute("ShoppingCart"));
}
if (_orderSettings.OnePageCheckoutEnabled)
{
return(RedirectToRoute("CheckoutOnePage"));
}
if (await _customerService.IsGuestAsync(await _workContext.GetCurrentCustomerAsync()) && !_orderSettings.AnonymousCheckoutAllowed)
{
return(Challenge());
}
if (!(await _shoppingCartService.ShoppingCartRequiresShippingAsync(cart)))
{
await _genericAttributeService.SaveAttributeAsync <ShippingOption>(await _workContext.GetCurrentCustomerAsync(),
NopCustomerDefaults.SelectedShippingOptionAttribute, null, (await _storeContext.GetCurrentStoreAsync()).Id);
return(RedirectToRoute("CheckoutPaymentMethod"));
}
//pickup point
if (_shippingSettings.AllowPickupInStore && _orderSettings.DisplayPickupInStoreOnShippingMethodPage)
{
var pickupInStore = ParsePickupInStore(form);
if (pickupInStore)
{
var pickupOption = await ParsePickupOptionAsync(form);
await SavePickupOptionAsync(pickupOption);
return(RedirectToRoute("CheckoutPaymentMethod"));
}
//set value indicating that "pick up in store" option has not been chosen
await _genericAttributeService.SaveAttributeAsync <PickupPoint>(await _workContext.GetCurrentCustomerAsync(), NopCustomerDefaults.SelectedPickupPointAttribute, null, (await _storeContext.GetCurrentStoreAsync()).Id);
}
//parse selected method
if (string.IsNullOrEmpty(shippingoption))
{
return(RedirectToAction("ShippingMethod"));
}
var splittedOption = shippingoption.Split(new[] { "___" }, StringSplitOptions.RemoveEmptyEntries);
if (splittedOption.Length != 2)
{
return(RedirectToAction("ShippingMethod"));
}
var selectedName = splittedOption[0];
var shippingRateComputationMethodSystemName = splittedOption[1];
//find it
//performance optimization. try cache first
var shippingOptions = await _genericAttributeService.GetAttributeAsync <List <ShippingOption> >(await _workContext.GetCurrentCustomerAsync(),
NopCustomerDefaults.OfferedShippingOptionsAttribute, (await _storeContext.GetCurrentStoreAsync()).Id);
if (shippingOptions == null || !shippingOptions.Any())
{
//not found? let's load them using shipping service
shippingOptions = (await _shippingService.GetShippingOptionsAsync(cart, await _customerService.GetCustomerShippingAddressAsync(await _workContext.GetCurrentCustomerAsync()),
await _workContext.GetCurrentCustomerAsync(), shippingRateComputationMethodSystemName, (await _storeContext.GetCurrentStoreAsync()).Id)).ShippingOptions.ToList();
}
else
{
//loaded cached results. let's filter result by a chosen shipping rate computation method
shippingOptions = shippingOptions.Where(so => so.ShippingRateComputationMethodSystemName.Equals(shippingRateComputationMethodSystemName, StringComparison.InvariantCultureIgnoreCase))
.ToList();
}
var shippingOption = shippingOptions
.Find(so => !string.IsNullOrEmpty(so.Name) && so.Name.Equals(selectedName, StringComparison.InvariantCultureIgnoreCase));
if (shippingOption == null)
{
return(RedirectToAction("ShippingMethod"));
}
//save
await _genericAttributeService.SaveAttributeAsync(await _workContext.GetCurrentCustomerAsync(), NopCustomerDefaults.SelectedShippingOptionAttribute, shippingOption, (await _storeContext.GetCurrentStoreAsync()).Id);
await SendExternalShippingMethodRequestAsync();
if (await _warrantyService.CartContainsWarrantiesAsync(cart))
{
return(RedirectToRoute("WarrantySelection"));
}
return(RedirectToRoute("CheckoutPaymentMethod"));
}