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6.1.0

With RuStore you can integrate payments in your mobile app.

tip

If you are in doubt read the instruction in the usage scenarios.

Implementation example​

Look at the example app to learn how to integrate our SDK.

All operations with the client are also accessible from Blueprints. Below is an initialization example.

img

Prerequisites​

  • App uploaded to RuStore Console.
  • App passed moderation (you don't have to publish the app).
Important
  • Test build signature (for example: debug) of the app must match the signature of the app build that was uploaded to the console and passed moderation (for example, release).
  • The user and the app are not banned in RuStore.
  • In-app purchases for the app are enabled in RuStore Console.
  • Unreal Engine 4.26 and later.
caution

The service has some restrictions to work outside of Russia.

Getting started​

  1. Copy the contents of the Plugins folder from the official RuStore repository on GitFlic into the Plugins folder of your project.
  2. Restart Unreal Engine.
  3. In the plugins list (Edit > Plugins > Project > Mobile) select the RuStoreBilling and RuStoreCore plugins.
  4. Connect the RuStoreCore and RuStoreBilling modules in the PublicDependencyModuleNames list of the YourProject.Build.cs file.
  5. In the project settings (Edit > Project Settings > Android) set the Minimum SDK Version parameter at least to 24 and the Target SDK Version parameter to 31 or later.

For payments via third party apps (SBP, SberPay и др.) to work, implement deeplink processing correctly. The RuStore Billing plugin will automatically add an additional activity with the required intent-filter to AndroidManifest.xml (see below). You can change this behavior in the RuStoreBilling_UPL_Android.xml file.

AndroidManifest.xml
<activity android:name="com.Plugins.RuStoreBilling.RuStoreIntentFilterActivity" android:exported="true" android:launchMode="singleTask">
    <intent-filter>
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.BROWSABLE" />
        <!-- Set your appscheme -->
        <data android:scheme="@string/rustore_app_scheme" />
    </intent-filter>
</activity>
caution

String resource @string/rustore_app_scheme needs to be implemented in your project.

@string/rustore_app_scheme — your deeplink scheme. This scheme must match the deeplink scheme specified during the initialization of the billing client.

Initialization​

Initialize the library before calling its methods.

Calling Init
FURuStoreBillingClientConfig config;
config.consoleApplicationId = "123456";
config.deeplinkScheme = "yourscheme";
config.allowNativeErrorHandling = false;
config.enableLogs = false;

URuStoreBillingClient::Instance()->Init(config);

All operations with the client are also accessible from Blueprints. Below is an initialization example.

img

  • consoleApplicationId — идентификатор приложения из консоли RuStore.

  • deeplinkSheme — deeplink URL address. You can use any unique name (for example: yourappscheme).
  • allowNativeErrorHandling — allow handling errors using native SDK (see more in Error handling).
  • enableLogs — enable logging.

The Init() call ties the object to the scene root, and, If no further work with the object is needed, execute the Dispose() method to free memory.

Deinitialization​

Calling Dispose
URuStoreBillingClient::Instance()->Dispose();
img

Initialization check​

If you need to check whether the library is initialized, use the GetIsInitialized() method. The method returns true if the library is initialized and false if Init hasn't been called yet.

Calling GetIsIninialized
bool isInitialized = URuStoreBillingClient::Instance()->GetIsIninialized();
img

Before you start​

Payment appRuStore Server RuStore_Billing_ClientYour serverYour appUserPayment appRuStore Server RuStore_Billing_ClientYour serverYour appUserPayments availability check[Optional]Server validation[Mandatory]Purchasing consumable product[Mandatory]Deeplink processing for paying with SBP, SberPay, etc.Product purchaseStarts your app checkPurchasesAvailabilityResult getProductsProducts list of your appDisplaying list of available purchasesPurchasing product purchaseProductRequest payment methodMaking paymentPayment methodPayment resultPayment infoServer validation (public API)Reliable purchase informationDeliver product to the userValidation result confirmPurchaseConsumption result purchaseProductRequest payment methodSpecified SBP/SberPay/T-PayStart payment processPayment scenarioPurchase paymentReturn to app OnNewIntentPayment resultDisplaying payment screen with the result

Payments availability check​

During the purchases availability check, the following conditions are verified.

  • The current version of RuStore is installed on the user's device.
  • RuStore app supports payments.
  • User is authorized in RuStore.
  • The user and the app are not banned in RuStore.
  • In-app purchases for the app are enabled in RuStore Console.

To check payments availability, use the CheckPurchasesAvailability method.

Every asynchronous request gets a requestId that is unique within a single app launch. Each event returns requestId of the request that triggered this event.

Calling CheckPurchasesAvailability
long requestId = URuStoreBillingClient::Instance()->CheckPurchasesAvailability( 
    []( long requestId, TSharedPtr<FURuStoreFeatureAvailabilityResult, ESPMode::ThreadSafe> response) { 
        // Process response 
    }, 
    []( long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) { 
        // Process error 
    } 
);
img

The Success callback returns the FURuStoreFeatureAvailabilityResult structure in the Response parameters (see below).

USTRUCT(BlueprintType)
struct RUSTORECORE_API FURuStoreFeatureAvailabilityResult
{
    GENERATED_USTRUCT_BODY()
 
    FURuStoreFeatureAvailabilityResult()
    {
        isAvailable = false;
    }
 
    UPROPERTY(BlueprintReadWrite)
    bool isAvailable;
     
    UPROPERTY(BlueprintReadWrite)
    FURuStoreError cause;
};
  • isAvailable — compliance with the payments availability conditions (true/false).
  • cause — error information.

All possible cause errors are described in Error Handling.(#handlingerrors). Other errors are returned in Failure.

The Failure callback returns the FURuStoreError structure with the error information in the Error parameter. The structure of the FURuStoreError error is described in [Error Handling].(#handlingerrors).

Working with SDK​

Retrieving products list​

You verified that payments are available and the users are able to make purchases. Now you can request products list. Use the GetProducts() method to request the information about products added to your app in RuStore Console.

Calling GetProducts
long requestId = URuStoreBillingClient::Instance()->GetProducts(
    productIds,
    []( long requestId, TSharedPtr<FURuStoreProductsResponse, ESPMode::ThreadSafe> response) {
        // Process response
    }, 
    []( long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);
img

TArray<FString> productIds — the list of product IDs. Must not exceed 100 entries.

To specify id of the products needed for the method, do the following.

  1. Open RuStore Console.
  2. Navigate to the Applications tab.
  3. Select the necessary app.
  4. In the left side menu select Monetization.
  5. Select product type: Subscriptions or In-App purchases.
  6. Copy the IDs of the required products. These are product ids.

The Success callback returns the FURuStoreFeatureAvailabilityResult structure in the Response parameter (see below).

GetProducts response

USTRUCT(BlueprintType)
struct FURuStoreProductsResponse
{
    GENERATED_USTRUCT_BODY()
 
    UPROPERTY(BlueprintReadOnly)
    TArray<FURuStoreProduct> products;
};

products — products list

Product structure

USTRUCT(BlueprintType)
struct FURuStoreProduct
{
    GENERATED_USTRUCT_BODY()
 
    FURuStoreProduct()
    {
        productId = "";
        productType = EURuStoreProductType::NON_CONSUMABLE;
        productStatus = EURuStoreProductStatus::INACTIVE;
        priceLabel = "";
        price = 0;
        currency = "";
        language = "";
        title = "";
        description = "";
        imageUrl = "";
        promoImageUrl = "";
    }
 
    UPROPERTY(BlueprintReadOnly)
    FString productId;
 
    UPROPERTY(BlueprintReadOnly)
    EURuStoreProductType productType;
 
    UPROPERTY(BlueprintReadOnly)
    EURuStoreProductStatus productStatus;
 
    UPROPERTY(BlueprintReadOnly)
    FString priceLabel;
 
    UPROPERTY(BlueprintReadOnly)
    int price;
 
    UPROPERTY(BlueprintReadOnly)
    FString currency;
 
    UPROPERTY(BlueprintReadOnly)
    FString language;
 
    UPROPERTY(BlueprintReadOnly)
    FString title;
 
    UPROPERTY(BlueprintReadOnly)
    FString description;
 
    UPROPERTY(BlueprintReadOnly)
    FString imageUrl;
 
    UPROPERTY(BlueprintReadOnly)
    FString promoImageUrl;
 
    UPROPERTY(BlueprintReadOnly)
    FURuStoreProductSubscription subscription;
};
  • productId — product ID assigned to product in RuStore Console (mandatory).
  • productType — product type: CONSUMABLE/NON-CONSUMABE/SUBSCRIPTION.
  • productStatus — product status.
  • priceLable — formatted product price, including currency symbol in language.
  • price — price in minimum currency units.
  • currency — ISO 4217 currency code.
  • language — language specified with BCP 47 code.
  • title — product name in language.
  • description — descriptions in language.
  • imageUrl — image URL.
  • promoImageUrl — promo image URL.
  • subscription — subscription description, returns only for subscription products.

Product type

UENUM(BlueprintType)
enum class EURuStoreProductType : uint8
{
    NON_CONSUMABLE UMETA(DisplayName = "NON_CONSUMABLE"),
    CONSUMABLE UMETA(DisplayName = "CONSUMABLE"),
    SUBSCRIPTION UMETA(DisplayName = "SUBSCRIPTION")
};

Product status

UENUM(BlueprintType)
enum class EURuStoreProductStatus : uint8
{
    ACTIVE UMETA(DisplayName = "ACTIVE"),
    INACTIVE UMETA(DisplayName = "INACTIVE")
};

Subscription structure

USTRUCT(BlueprintType)
struct FURuStoreProductSubscription
{
    GENERATED_USTRUCT_BODY()
 
    FURuStoreProductSubscription()
    {
        introductoryPrice = "";
        introductoryPriceAmount = "";
    }
 
    UPROPERTY(BlueprintReadOnly)
    FURuStoreSubscriptionPeriod subscriptionPeriod;
 
    UPROPERTY(BlueprintReadOnly)
    FURuStoreSubscriptionPeriod freeTrialPeriod;
 
    UPROPERTY(BlueprintReadOnly)
    FURuStoreSubscriptionPeriod gracePeriod;
 
    UPROPERTY(BlueprintReadOnly)
    FString introductoryPrice;
 
    UPROPERTY(BlueprintReadOnly)
    FString introductoryPriceAmount;
 
    UPROPERTY(BlueprintReadOnly)
    FURuStoreSubscriptionPeriod introductoryPricePeriod;
};
  • subscriptionPeriod — subscription period.
  • freeTrialPeriod — subscription trial period.
  • gracePeriod — subscription grace period.
  • introductoryPrice — formated introductory price with the currency symbol in the product:language language.
  • introductoryPriceAmount — introductory price in minimum currency units.
  • introductoryPricePeriod — introductory price invoice period.

Subscription period structure

USTRUCT(BlueprintType)
struct FURuStoreSubscriptionPeriod
{
    GENERATED_USTRUCT_BODY()
 
    FURuStoreSubscriptionPeriod()
    {
        years = 1970;
        months = 1;
        days = 1;
    }
 
    UPROPERTY(BlueprintReadOnly)
    int years;
 
    UPROPERTY(BlueprintReadOnly)
    int months;
 
    UPROPERTY(BlueprintReadOnly)
    int days;
};
  • years — amount of years.
  • months — amount of months.
  • days — amount of days.

The Failure callback returns the FURuStoreError structure with the error information in the Error parameter.

The structure of the FURuStoreError error is described in [Error Handling].(#handlingerrors).

Purchasing product​

To purchase product, use the PurchaseProduct() method.

Purchase product request

Calling PurchaseProduct
long requestId = URuStoreBillingClient::Instance()->PurchaseProduct(
    productId,
    orderId,
    quantity,
    developerPayload,
    []( long requestId, TShardPtr<FURuStorePaymentResult, ESPMode::ThreadSafe> response) {
        // Process response
    }, 
    []( long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);
img
  • productId — product ID assigned to product in RuStore Console (mandatory).
  • orderId: String — payment ID generated by the app (optional). If you specify this parameter in your system, you will receive it via our API. Если не укажете, он будет сгенерирован автоматически (uuid). Максимальная длина 150 символов.
  • quantity — количество продукта (необязательный параметр — если не указывать, будет подставлено значение 1).
  • developerPayload — string with additional order information, that you can specify on purchase initialization.

The Success callback returns a smart pointer to the inherited object (ESPMode::ThreadSafe) of the FURuStorePaymentResult structure in the Response parameter.

You can retrieve the inherited object type using the GetTypeName() method. Typecast can be done with StaticCastSharedPtr<>.

Calling GetTypeName and StaticCastSharedPtr
// TShardPtr<FURuStorePaymentResult, ESPMode::ThreadSafe> response
FString typeName = response->GetTypeName();
if (typeName == "FURuStoreSuccess")
{
    auto success = *StaticCastSharedPtr<FURuStoreSuccess>(response);
}

Possible type values:

  • FURuStoreSuccess - successful purchase result.
  • FURuStoreFailure - there was a problem during sending payment request or receiving payment status, purchase status unknown.
  • FURuStoreCancelled — payment request sent, although, the user closed the payment screen on their app, thus, the payment result is unknown.
  • FURuStoreInvalidPaymentState — SDK payments error. May occur due to an incorrect return deeplink.

In the blueprint implementation, the Success callback returns inherited class object URuStorePaymentResultClass in the Response parameter. Typecast can be done with calls Cast To.

img

Purchase result structure

UCLASS(BlueprintType)
class RUSTOREBILLING_API URuStorePaymentResultClass : public UObject
{
    GENERATED_BODY()
};
 
USTRUCT(BlueprintType)
struct RUSTOREBILLING_API FURuStorePaymentResult
{
    GENERATED_USTRUCT_BODY()
 
    virtual ~FURuStorePaymentResult() {}
 
    virtual FString GetTypeName() { return "FURuStorePaymentResult"; }
};

Success purchase result structure

UCLASS(BlueprintType)
class RUSTOREBILLING_API URuStoreSuccess : public URuStorePaymentResultClass
{
    GENERATED_BODY()
 
public:
    UPROPERTY(BlueprintReadOnly)
    FURuStoreSuccess value;
};
 
USTRUCT(BlueprintType)
struct RUSTOREBILLING_API FURuStoreSuccess : public FURuStorePaymentResult
{
    GENERATED_USTRUCT_BODY()
 
    FURuStoreSuccess()
    {
        orderId = "";
        purchaseId = "";
        productId = "";
        invoiceId = "";
        subscriptionToken = "";
        sandbox = false;
    }
 
    UPROPERTY(BlueprintReadOnly)
    FString orderId;
 
    UPROPERTY(BlueprintReadOnly)
    FString purchaseId;
 
    UPROPERTY(BlueprintReadOnly)
    FString productId;
 
    UPROPERTY(BlueprintReadOnly)
    FString invoiceId;
 
    UPROPERTY(BlueprintReadOnly)
    FString subscriptionToken;
 
    UPROPERTY(BlueprintReadOnly)
    bool sandbox;
 
    virtual FString GetTypeName() override { return "FURuStoreSuccess"; }
};

Cancelled purchase result structure

UCLASS(BlueprintType)
class RUSTOREBILLING_API URuStoreCancelled : public URuStorePaymentResultClass
{
    GENERATED_BODY()
 
public:
    UPROPERTY(BlueprintReadOnly)
    FURuStoreCancelled value;
};
 
USTRUCT(BlueprintType)
struct RUSTOREBILLING_API FURuStoreCancelled : public FURuStorePaymentResult
{
    GENERATED_USTRUCT_BODY()
 
    FURuStoreCancelled()
    {
        purchaseId = "";
        sandbox = false;
    }
 
    UPROPERTY(BlueprintReadOnly)
    FString purchaseId;
 
    UPROPERTY(BlueprintReadOnly)
    bool sandbox;
 
    virtual FString GetTypeName() override { return "FURuStoreCancelled"; }
};

Failure purchase result structure

UCLASS(BlueprintType)
class RUSTOREBILLING_API URuStoreFailure : public URuStorePaymentResultClass
{
    GENERATED_BODY()
 
public:
    UPROPERTY(BlueprintReadOnly)
    FURuStoreFailure value;
};
 
USTRUCT(BlueprintType)
struct RUSTOREBILLING_API FURuStoreFailure : public FURuStorePaymentResult
{
    GENERATED_USTRUCT_BODY()
 
public:
    FURuStoreFailure()
    {
        purchaseId = "";
        invoiceId = "";
        orderId = "";
        quantity = 0;
        productId = "";
        errorCode = 0;
        sandbox = false;
    }
 
    UPROPERTY(BlueprintReadOnly)
    FString purchaseId;
 
    UPROPERTY(BlueprintReadOnly)
    FString invoiceId;
 
    UPROPERTY(BlueprintReadOnly)
    FString orderId;
 
    UPROPERTY(BlueprintReadOnly)
    int quantity;
 
    UPROPERTY(BlueprintReadOnly)
    FString productId;
 
    UPROPERTY(BlueprintReadOnly)
    int errorCode;
 
    UPROPERTY(BlueprintReadOnly)
    bool sandbox;
 
    virtual FString GetTypeName() override { return "FURuStoreFailure"; }
};
info

The sandbox parameter defines whether a payment is a test payment. Available values: true or false, where true means a test payment and false — an actual payment.

InvalidPaymentState purchase result structure

UCLASS(BlueprintType)
class RUSTOREBILLING_API URuStoreInvalidPaymentState : public URuStorePaymentResultBase
{
    GENERATED_BODY()
 
public:
    UPROPERTY(BlueprintReadOnly)
    FURuStoreInvalidPaymentState value;
};
 
USTRUCT(BlueprintType)
struct RUSTOREBILLING_API FURuStoreInvalidPaymentState : public FURuStorePaymentResult
{
    GENERATED_USTRUCT_BODY()
     
    virtual FString GetTypeName() override { return "FURuStoreInvalidPaymentState"; }
};

The Failure callback returns the FURuStoreError structure with the error information in the Error parameter. The structure of the FURuStoreError error is described in [Error Handling].(#handlingerrors).

Getting products list​

This method returns purchases with the following statuses. For more informations on possible purchase states see Getting purchase info.

Type/StatusINVOICE_CREATEDCONFIRMEDPAID
CONSUMABLE++
NON-CONSUMABLE++
SUBSCRIPTION++
note

This method returns incomplete purchases that require attention. Also, it shows confirmed subscriptions and consumable products that cannot be purchased more than once.

Go get the user's purchases list, use the GetPurchases() method.

Calling GetPurchases
long requestId = URuStoreBillingClient::Instance()->GetPurchases(
    []( long requestId, TSharedPtr<FURuStorePurchasesResponse, ESPMode::ThreadSafe> response) {
        // Process response
    },
    []( long requestId, TSharedPtr<FURuStoreRuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);
img

The Success callback returns the FURuStorePurchasesResponse structure in the Response parameter (see below).

GetPurchases response

USTRUCT(BlueprintType)
struct FURuStorePurchasesResponse: public FURuStoreResponseWithCode 
{
    GENERATED_USTRUCT_BODY()
    UPROPERTY(BlueprintReadOnly)
    TArray<FURuStorePurchase> purchases;
};

purchases — list of requested purchases

Purchase structure

USTRUCT(BlueprintType)
struct FURuStorePurchase
{
    GENERATED_USTRUCT_BODY()
 
    FURuStorePurchase()
    {
        purchaseId = "";
        productId = "";
        invoiceId = "";
        language = "";
        purchaseTime = FDateTime(0);
        orderId = "";
        amountLabel = "";
        amount = 0;
        currency = "";
        quantity = 0;
        purchaseState = EURuStorePurchaseState::CANCELLED;
        developerPayload = "";
        subscriptionToken = "";
    }
 
    UPROPERTY(BlueprintReadOnly)
    FString purchaseId;
 
    UPROPERTY(BlueprintReadOnly)
    FString productId;
 
    UPROPERTY(BlueprintReadOnly)
    FString invoiceId;
 
    UPROPERTY(BlueprintReadOnly)
    FString language;
 
    UPROPERTY(BlueprintReadOnly)
    FDateTime purchaseTime;
 
    UPROPERTY(BlueprintReadOnly)
    FString purchaseTimeLabel;
 
    UPROPERTY(BlueprintReadOnly)
    FString orderId;
 
    UPROPERTY(BlueprintReadOnly)
    FString amountLabel;
 
    UPROPERTY(BlueprintReadOnly)
    int amount;
 
    UPROPERTY(BlueprintReadOnly)
    FString currency;
 
    UPROPERTY(BlueprintReadOnly)
    int quantity;
 
    UPROPERTY(BlueprintReadOnly)
    EURuStorePurchaseState purchaseState;
 
    UPROPERTY(BlueprintReadOnly)
    FString developerPayload;
 
    UPROPERTY(BlueprintReadOnly)
    FString subscriptionToken;
};

Purchase state

UENUM(BlueprintType)
enum class EURuStorePurchaseState : uint8
{
    CREATED UMETA(DisplayName = "CREATED"),
    INVOICE_CREATED UMETA(DisplayName = "INVOICE_CREATED"),
    CONFIRMED UMETA(DisplayName = "CONFIRMED"),
    PAID UMETA(DisplayName = "PAID UMETA"),
    CANCELLED UMETA(DisplayName = "CANCELLED"),
    CONSUMED UMETA(DisplayName = "CONSUMED"),
    PAUSED UMETA(DisplayName = "PAUSED"),
    CLOSED UMETA(DisplayName = "CLOSED")
};

  • purchaseId — product ID.

  • productId — product ID assigned to product in RuStore Console (mandatory).

  • invoiceId — invoice ID.

  • language — language specified with BCP 47 code.

  • purchaseTime — purchase time.

  • orderId — payment ID generated by the app (optional). If you specify this parameter in your system, you will receive it via our API. Если не укажете, он будет сгенерирован автоматически (uuid). Максимальная длина 150 символов.

  • amountLable — formatted purchase price, including currency symbol.

  • amount — price in minimum currency units.

  • currency — ISO 4217 currency code.

  • quantity — количество продукта (необязательный параметр — если не указывать, будет подставлено значение 1).

  • purchaseState — purchase state:

    • CREATED — purchase created;
    • INVOICE_CREATED — purchase invoiced is created and awaiting payment;
    • PAID — only for consumable products — intermediate status, the funds on the user's account are put on hold. The purchase is awaiting confirmation from the developer;
    • CONFIRMED — payment for non-consumable product successful;
    • CONSUMED — payment for consumable product successful;
    • CANCELLED — purchase canceled — there was no payment or the payment was refunded (if a purchase is a subscription it doesn't change its state to CANCELLED);
    • PAUSED — for subscriptions — the purchase is in HOLD period;
    • TERMINATED — subscription terminated.

  • developerPayload — string with additional order information, that you can specify on purchase initialization.

  • subscriptionToken — purchase token for server validation .

The Failure callback returns the FURuStoreError structure with error information in the Error parameter.

The structure of the FURuStoreError error is described in [Error Handling].(#handlingerrors).

Getting purchase information​

Go get purchase information, use the GetPurchaseInfo method.
Calling GetPurchaseInfo
long requestId = URuStoreBillingClient::Instance()->GetPurchaseInfo(
    purchaseId,
    []( long requestId, TSharedPtr<FURuStorePurchaseInfoResponse, ESPMode::ThreadSafe> response) {
        // Process response
    },    
    []( long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);
img

purchaseId — product ID

The Success callback returns the FURuStorePurchase structure in the Response parameter.

The Failure callback returns the FURuStoreError structure with the error information. The structure of the FURuStoreError error is described in [Error Handling].(#handlingerrors).

State model (purchaseState)

CONSUMABLES - purchase state model

Purchase created, however, the invoice was not createdNo payment was made. This purchase can be ignored.The user has an unfinished purchase. Invoice was created but not paid. You need to inform the user.Purchase canceledFor consumable products. Purchase paid, but not consumed. Any App need to send an immediate request for purchase confirmation.For consumable products. Purchase consumption confirmed.CREATEDINVOICE_CREATEDCANCELLEDInvoice createdInvoice paidConsumptionPAIDCONSUMEDInvoice canceledPayment returnInvoice was paid and received an errorPurchase canceled

NON-CONSUMABLES - purchase state model

Purchase created, however, the invoice was not created. There was no payment. This purchase can be ignored.The user has an unfinished purchase. Invoice was created but not paid. You need to inform the user.Purchase canceledPayment confirmation status for non-consumable or subscription products. This status means that the product is purchased, further purchase attempts will lead errors.CREATEDINVOICE_CREATEDCANCELLEDInvoice creationPurchase confirmedCONFIRMEDInvoice canceledPayment returnPurchase cancellation

(SUBSCRIPTIONS) - purchase state model

img

Consume (confirm) purchase​

Products that require confirmation​

Please, keep in mind the purchase type. Confirmation is only needed if your product is CONSUMABLE and can be purchased more than once.

To correctly deliver such products, confirm purchases with the confirmPurchase method. On delivering a product, use server validation. Deliver your product only after the payment (invoice) is in the CONFIRMED status. Use the addOnSuccessListener callback of the confirmPurchase method to deliver products.

Attention!

The PAID status is intermediate and meas that the user's money is put on hold on their card, so you need to confirm the purchase.

The exceptions are SBP or mobile payment — see the explanation below.

When paying for CONSUMABLE products with SBP or mobile payment, one-stage payment is used, although the payment model is as in two-stage payments. It means that what a payment is in the PAID status, when paying with SBP or mobile payment, the money is withdrawn from the buyer's account, as well as the developer's fee is withdrawn from their's. In this case, if a purchase is canceled from the PAID status the refund is made, not reverse. The developer's fee will not be returned. At the same time, to complete the purchase you still have to confirm purhchase — see the table below.

Payment methodPayment typePayment in the PAID status
  • bank cards;
  • Sber ID;
  • SberPay;
  • T-Pay;
  • VK Pay.
Two-stage
  • Money is on hold on the buyer's account.
  • Developer's fee is not applied.
  • Payment cancellation (reverse) is available.
  • SBP;
  • mobile payment.
One-stage
  • Money is withdrawn from the buyer's account.
  • The developer's fee is applied.
  • If a purchase is canceled form the PAID status the transaction is refunded, not reverse reversed. The developer's fee will not be returned.

ConfirmPurchase request​

Us the ConfirmPurchase method to confirm a purchase. Purchase confirmation request must be accompanied by the delivery of the product. After calling the confirmation method the purchase changes its state to CONSUMED.

Calling ConfirmPurchase
long requestId = RuStoreBillingClient::Instance()->ConfirmPurchase(
    purchaseId,
    []( long requestId, TSharedPtr<FURuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    },
    []( long requestId, TSharedPtr<FURuStoreConfirmPurchaseResponse, ESPMode::ThreadSafe> response) {
        // Process response
    }
);
img
  • purchaseId — product ID.

The Failure callback returns the FURuStoreError structure with error information in the Error parameter. The structure of the FURuStoreError error is described in [Error Handling].(#handlingerrors).

Purchase cancellation​

To cancel a purchase, use the DeletePurchase method.

Purchase cancellation request

Calling DeletePurchase
long requestId = URuStoreBillingClient::Instance()->DeletePurchase(
    purchaseId,
    []( long requestId, TSharedPtr<FURuStoreDeletePurchaseResponse, ESPMode::ThreadSafe> response) {
        // Process response
    },    
    []( long requestId, TSharedPtr<FURuStoreRuStoreError, ESPMode::ThreadSafe> error) {
        // Process error
    }
);
img
  • purchaseId — product ID.
info

Use this method if your app logic is related to purchase cancellation. The purchase is canceled automatically after a 20-min timeout, or upon a second purchase from the same customer.

The Failure callback returns the FURuStoreError structure with error information in the Error parameter. The structure of the FURuStoreError error is described in [Error Handling].(#handlingerrors).

Handling pending payments​

Handling of unfinished payments is done by the developer.

To confirm a purchase of CONSUMABLE product in the PAID state, call the [purchase confirmation method].(#confirm) (see Retrieve purchase details).

When dealing with purchase cancellation using payment processing methods take into account your business logic. Some developers implement additional checks before purchase confirmation or cancellation. In that case, make a separate purchase state request.

tip

For example, if the user paid for the product that you cannot deliver for some reason, call the payment cancellation method for the purchase in the PAID status to cancel the purchase.

If the get purchases list method returns a purchase in the INVOICE_CREATED state, you can us the purchase cancellation method. For instance, if you don't want to see a purchase in that state in the purchase list. This is optional as RuStore handles cancellation of such purchases on its side.

info

Sometimes, after paying with a bank app (SBP, SberPay, T-Pay etc.) and returning to the app, the status is still INVOICE_CREATED, and the payment status is unsuccessful. This is caused by the purchase processing time by the bank. In this case, you need to adapt your screen lifecycle to the product list retrieval logic.

Alternatively, you can implement cancellation of purchases in the INVOICE_CREATED state only through user action in your app. For example, create a dedicated button for this purpose.

Event logging​

If you need to log the events of the payment library, set enableLogs = true in the FURuStoreBillingClientConfig structure on calling the Init method.

Calling Init
FURuStoreBillingClientConfig config;
config.consoleApplicationId = "123456";
config.deeplinkScheme = "yourscheme";
config.allowNativeErrorHandling = false;
config.enableLogs = true;

URuStoreBillingClient::Instance()->Init(config);
img

The BillingClientLogger object will be used that implements messages output into Logcat

class BillingClientLogger(private val tag: String) : ExternalPaymentLogger {

    override fun d(e: Throwable?, message: () -> String) {
        Log.d(tag, message.invoke(), e)
    }
	
    override fun e(e: Throwable?, message: () -> String) {
        Log.e(tag, message.invoke(), e)
    }

    override fun i(e: Throwable?, message: () -> String) {
        Log.i(tag, message.invoke(), e)
    }

    override fun v(e: Throwable?, message: () -> String) {
        Log.v(tag, message.invoke(), e)
    }

    override fun w(e: Throwable?, message: () -> String) {
        Log.w(tag, message.invoke(), e)
    }
}

Changing interface theme​

To dynamically change the theme, use the SetTheme method.

Calling SetTheme
EURuStoreTheme theme = EURuStoreTheme::DARK;
URuStoreBillingClient::Instance()->SetTheme(theme);
img
  • theme — theme type from EURuStoreTheme.

Theme type

UENUM(BlueprintType)
enum class EURuStoreTheme : uint8
{
    DARK UMETA(DisplayName = "DARK"),
    LIGHT UMETA(DisplayName = "LIGHT")
};
  • DARK — dark theme.
  • LIGHT — light theme.

You can retrieve the information about the set theme using the GetTheme method.

Calling GetTheme
EURuStoreTheme theme = URuStoreBillingClient::Instance()->GetTheme();
img

Error handling​

Possible errors

  • RuStoreNotInstalledException — RuStore is not installed on the user's device;
  • RuStoreOutdatedException — RuStore version installed on the user's device does not support this SDK;
  • RuStoreUserUnauthorizedException — user is not authorized in RuStore;
  • RuStoreRequestLimitReached — not enough time has passed since the process was last shown;
  • RuStoreReviewExists — this user has already rated your app;
  • RuStoreInvalidReviewInfo — problems with ReviewInfo;
  • RuStoreException — basic RuStore error from which other errors are inherited.

Error structure

USTRUCT(BlueprintType)
struct RUSTORECORE_API FURuStoreRuStoreError
{
    GENERATED_USTRUCT_BODY()
    FURuStoreRuStoreError()
    {
        name = "" ;
        description = "" ;
    }
	
    UPROPERTY(BlueprintReadOnly)
    FString name;
	
    UPROPERTY(BlueprintReadOnly)
    FString description;
};
  • name – error name.
  • description – error description.

Automatic error handling

On calling the PurchaseProduct method, errors are handled automatically.

If allowNativeErrorHandling == true is passed the during SDK initialization, both the Failure handler is called and the user is shown the error dialog.

You can change this behavior any time using the SetAllowNativeErrorHandling() method.

Calling SetAllowNativeErrorHandling
RuStoreBillingClient::Instance()->SetAllowNativeErrorHandling(false);
img
  • true — display dialog.
  • false — do not display dialog.

Error codes​

Below is the list of possible errors that can be received errorCode field.

HTTP codeError codeDescription
40040001Incorrect request parameters: mandatory parameters are not filled in/incorrect parameters format.
40040003App not found.
40040004App status: inactive.
40040005Product not found.
40040006Product status: inactive.
40040007Invalid product type. Supported types: consumable, non-consumable, subscription.
40040008An order with this order_id already exists.
40040009This client already has an active order for this product in the invoice_created state. Prompt the client to either complete their payment or cancel the purchase.
40040010For consumable products. This customer has and order for this product in the paid state. First, the order needs to be consumed (confirmed) in the app, then, you can send another purchase request.
40040011For non-consumable products. This client already has an order of this product in the pre_confirmed/confirmed state. Such product has already been purchased. This product cannot be sold more than once.
40040012For subscription products. This client already has an order of this product in the pre_confirmed/confirmed state. Such product has already been purchased. This product cannot be sold more than once.
40040013For subscription products. The data was not received in the GET/products (serviceId, user_id) response.
40040014One or more mandatory attribute was not received in the request.
40040015Failed to change the order status during the purchase update (not allowed).
40040016quantity > 1 is specified for a non-consumable product purchase.
40040017Product deleted, new purchases not available.
40040018Cannot consume products with product type.
40140101Invalid token.
40140102Token lifetime has expired.
40340301Access to the requested resource is denied (unauthorized).
40340302This call is not authorized for the current token (method not allowed).
40340303The app ID in the request does not match the token.
40340305Incorrect token type.
40440401Not found.
40840801The notification timeout period specified in the request has expired.
50050***Payment service internal error.