/// <summary>
/// Gets a list of all purchased products.
/// </summary>
/// <param name="itemType">
/// The type of product to retrieve. See the <see cref="ItemType"/> class for a list of types.
/// </param>
/// <returns>A list of purchased products.</returns>
/// <exception cref="ArgumentNullException"><paramref name="itemType"/> is <c>null</c>.</exception>
/// <exception cref="ArgumentException">
/// <paramref name="itemType"/> is not <see cref="ItemType.Product"/> or <see cref="ItemType.Subscription"/>.
/// </exception>
/// <exception cref="InAppBillingException">
/// (asynchronous) Retrieving the purchases failed.
/// </exception>
public Task <IReadOnlyList <Purchase> > GetPurchases(string itemType)
{
if (itemType == null)
{
throw new ArgumentNullException(nameof(itemType));
}
if (itemType != ItemType.Product && itemType != ItemType.Subscription)
{
throw new ArgumentException("Invalid item type.");
}
return(Observable.Create <IReadOnlyList <Purchase> >(o =>
{
InAppBillingHandler.InAppBillingProcessingErrorDelegate errorDelegate = message =>
{
o.OnError(new InAppBillingException($"Getting purchases failed: {message}"));
};
this.serviceConnection.BillingHandler.InAppBillingProcesingError += errorDelegate;
IList <Purchase> purchases = this.serviceConnection.BillingHandler.GetPurchases(itemType);
o.OnNext(purchases == null ? new List <Purchase>() : purchases.ToList());
o.OnCompleted();
return () => this.serviceConnection.BillingHandler.InAppBillingProcesingError -= errorDelegate;
}).ToTask());
}
/// <summary>
/// Consumes the specified <see cref="Purchase"/>.
/// </summary>
/// <param name="purchase">The <see cref="Purchase"/> to consume.</param>
/// <exception cref="ArgumentNullException"><paramref name="purchase"/> is <c>null</c>.</exception>
/// <exception cref="InAppBillingException">
/// The <see cref="Purchase"/> couldn't be consumed.
/// </exception>
public Task ConsumePurchase(Purchase purchase)
{
if (purchase == null)
{
throw new ArgumentNullException(nameof(purchase));
}
return(Observable.Create <Unit>(o =>
{
InAppBillingHandler.OnPurchaseConsumedDelegate consumedDelegate = token =>
{
o.OnNext(Unit.Default);
o.OnCompleted();
};
InAppBillingHandler.OnPurchaseConsumedErrorDelegate consumedErrorDelegate = (responseCode, token) =>
{
o.OnError(new InAppBillingException("Failed to consume purchase"));
};
InAppBillingHandler.InAppBillingProcessingErrorDelegate errorDelegate = message =>
{
o.OnError(new InAppBillingException($"Failed to consume purchase: {message}"));
};
this.serviceConnection.BillingHandler.OnPurchaseConsumed += consumedDelegate;
this.serviceConnection.BillingHandler.OnPurchaseConsumedError += consumedErrorDelegate;
this.serviceConnection.BillingHandler.InAppBillingProcesingError += errorDelegate;
this.serviceConnection.BillingHandler.ConsumePurchase(purchase);
return () =>
{
this.serviceConnection.BillingHandler.OnPurchaseConsumed -= consumedDelegate;
this.serviceConnection.BillingHandler.OnPurchaseConsumedError -= consumedErrorDelegate;
this.serviceConnection.BillingHandler.InAppBillingProcesingError -= errorDelegate;
};
}).ToTask());
}
/// <summary>
/// Buys the specified <see cref="Product"/>
/// </summary>
/// <param name="product">The product to buy.</param>
/// <returns>
/// A future with the result of the operation.
///
/// The result maps to a value in the <see cref="BillingResult"/> class.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="product"/> is <c>null</c></exception>
public Task <PurchaseResult> BuyProduct(Product product)
{
if (product == null)
{
throw new ArgumentNullException(nameof(product));
}
return(Observable.Create <PurchaseResult>(o =>
{
InAppBillingHandler.OnProductPurchasedDelegate purchaseCompleted = (response, purchase, data, signature) =>
{
var res = new PurchaseResult();
res.Result = response;
res.Purchase = purchase;
res.Data = data;
res.Signature = signature;
o.OnNext(res);
o.OnCompleted();
};
InAppBillingHandler.OnProductPurchaseErrorDelegate purchaseError = (response, sku) =>
{
var res = new PurchaseResult();
res.Result = response;
res.Sku = sku;
o.OnNext(res);
o.OnCompleted();
};
InAppBillingHandler.BuyProductErrorDelegate errorDelegate = (code, sku) =>
{
var res = new PurchaseResult();
res.Result = code;
res.Sku = sku;
o.OnNext(res);
o.OnCompleted();
};
InAppBillingHandler.InAppBillingProcessingErrorDelegate errorDelegate2 = message =>
{
var res = new PurchaseResult();
res.Result = BillingResult.Error;
o.OnNext(res);
o.OnCompleted();
};
InAppBillingHandler.OnUserCanceledDelegate canceledDelegate = () =>
{
var res = new PurchaseResult();
res.Result = BillingResult.UserCancelled;
o.OnNext(res);
o.OnCompleted();
};
InAppBillingHandler.OnPurchaseFailedValidationDelegate validationErrorDelegate = (purchase, data, signature) =>
{
var res = new PurchaseResult();
res.Result = BillingResult.Error;
o.OnNext(res);
o.OnCompleted();
};
this.serviceConnection.BillingHandler.OnProductPurchased += purchaseCompleted;
this.serviceConnection.BillingHandler.OnProductPurchasedError += purchaseError;
this.serviceConnection.BillingHandler.BuyProductError += errorDelegate;
this.serviceConnection.BillingHandler.InAppBillingProcesingError += errorDelegate2;
this.serviceConnection.BillingHandler.OnUserCanceled += canceledDelegate;
this.serviceConnection.BillingHandler.OnPurchaseFailedValidation += validationErrorDelegate;
this.serviceConnection.BillingHandler.BuyProduct(product);
return () =>
{
this.serviceConnection.BillingHandler.OnProductPurchased -= purchaseCompleted;
this.serviceConnection.BillingHandler.OnProductPurchasedError -= purchaseError;
this.serviceConnection.BillingHandler.BuyProductError -= errorDelegate;
this.serviceConnection.BillingHandler.InAppBillingProcesingError -= errorDelegate2;
this.serviceConnection.BillingHandler.OnUserCanceled -= canceledDelegate;
this.serviceConnection.BillingHandler.OnPurchaseFailedValidation -= validationErrorDelegate;
};
}).ToTask());
}
