void ValidateNotification(AppStoreNotification notification)
{
if (notification.SharedSecret != Options.SharedSecret)
{
throw new Exception("SharedSecret doesn't match.");
}
if (notification.Environment != Options.Environment)
{
throw new Exception("Environment doesn't match.");
}
}
public async Task Intercept(AppStoreNotification notification)
{
try
{
ValidateNotification(notification);
var subscription = await Repository.GetByPurchaseToken(notification.PurchaseToken);
SubscriptionInfo subscriptionInfo = null;
if (subscription is null)
{
subscriptionInfo = await StoreConnector.GetSubscriptionInfo(new SubscriptionInfoArgs
{
UserId = null,
ProductId = notification.ProductId,
ReceiptData = notification.UnifiedReceipt.LatestReceipt
});
if (subscriptionInfo is null)
{
return;
}
subscription = await Repository.GetByTransactionId(subscriptionInfo.TransactionId);
}
if (subscription is not null)
{
if (notification.Type.IsAnyOf(AppStoreNotificationType.InitialBuy, AppStoreNotificationType.InteractivelyRenewed))
{
subscription.SubscriptionDate = notification.PurchaseDate;
subscription.ExpirationDate = notification.ExpirationDate;
subscription.CancellationDate = notification.CancellationDate;
subscription.AutoRenews = notification.AutoRenewStatus;
}
else if (notification.Type.IsAnyOf(AppStoreNotificationType.CanceledOrUpgraded, AppStoreNotificationType.Refunded, AppStoreNotificationType.FamilySharingRevoked))
{
subscription.CancellationDate = notification.CancellationDate;
}
else if (notification.Type.IsAnyOf(AppStoreNotificationType.AutoRenewed, AppStoreNotificationType.AutoRecovered))
{
subscription.ExpirationDate = notification.ExpirationDate;
}
else if (notification.Type == AppStoreNotificationType.AutoRenewFailed)
{
subscription.ExpirationDate = notification.IsInBillingRetryPeriod == true ? notification.GracePeriodExpirationDate : LocalTime.UtcNow;
}
else if (notification.Type == AppStoreNotificationType.RenewalStatusChanged)
{
subscription.AutoRenews = notification.AutoRenewStatus;
}
await Repository.UpdateSubscription(subscription);
}
else
{
subscription = await Repository.AddSubscription(new Subscription
{
Id = Guid.NewGuid().ToString(),
ProductId = notification.ProductId,
UserId = subscriptionInfo.UserId.Or("<NOT_PROVIDED>"),
Platform = "AppStore",
TransactionId = subscriptionInfo.TransactionId,
ReceiptData = notification.UnifiedReceipt.LatestReceipt,
PurchaseToken = notification.PurchaseToken,
TransactionDate = notification.PurchaseDate,
SubscriptionDate = subscriptionInfo.SubscriptionDate,
ExpirationDate = subscriptionInfo.ExpirationDate,
CancellationDate = subscriptionInfo.CancellationDate,
LastUpdate = LocalTime.UtcNow,
AutoRenews = subscriptionInfo.AutoRenews
});
}
await Repository.AddTransaction(new Transaction
{
Id = Guid.NewGuid().ToString(),
SubscriptionId = subscription.Id,
Platform = "AppStore",
Date = LocalTime.UtcNow,
Details = notification.OriginalData
});
}
catch (Exception ex)
{
Logger.LogError(ex, $"Failed to intercept following notification. {notification.OriginalData}");
}
}
