public async Task <IList <OutOfStockSubscription> > Handle(SendNotificationsToSubscribersCommand request, CancellationToken cancellationToken)
{
if (request.Product == null)
{
throw new ArgumentNullException(nameof(request.Product));
}
int result = 0;
var subscriptions = await GetAllSubscriptionsByProductId(request.Product.Id, request.Attributes, request.Warehouse);
foreach (var subscription in subscriptions)
{
var customer = await _customerService.GetCustomerById(subscription.CustomerId);
//ensure that customer is registered (simple and fast way)
if (customer != null && CommonHelper.IsValidEmail(customer.Email))
{
var customerLanguageId = customer.GetUserFieldFromEntity <string>(SystemCustomerFieldNames.LanguageId, subscription.StoreId);
await _messageProviderService.SendBackinStockMessage(customer, request.Product, subscription, customerLanguageId);
result++;
}
}
return(subscriptions);
}