6.0.1

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.

Prerequisites

The user and the app are not banned in RuStore.
In-app purchases for the app are enabled in RuStore Console.

caution

The service has some restrictions to work outside of Russia.

Getting started

To connect payments to your project, execute the following command.

flutter pub add flutter_rustore_billing

This command will add the following string to the pubspec.yaml file.

dependencies: flutter_rustore_billing: ^6.0.1

Deeplink handling

RuStore SDK uses deeplink to handle third-party payment applications. This makes it easier to pay with third-party apps and return to your app.

To configure deeplinks functionality in your app, define deeplinkScheme in your AndroidManifest file and redefine the OnNewIntent method of your activity.

AndroidManifest.xml
<activity
    android:name=".sample.MainActivity">
     <intent-filter>
    
    <action android:name="android.intent.action.MAIN"/>
    
    <category android:name="android.intent.category.LAUNCHER"/>
    </intent-filter>
     <intent-filter>
    
    <action android:name="android.intent.action.VIEW"/>
    
    <category android:name="android.intent.category.DEFAULT"/>
    
    <category android:name="android.intent.category.BROWSABLE"/>
    
    <data android:scheme="yourappscheme"/>
    </intent-filter> </activity>

Replace yourappscheme in the example above with the name of your scheme. For example, ru.package.name.rustore.scheme.

info

The scheme defined in the Androidmanifest file must match the scheme you specify in the create method of the RuStore SDK billing.

Initialization

Initialize the library before calling its methods.

For initialization, call the RustoreBillingClient.initialize() method.

RustoreBillingClient.initialize(
"123456", //consolApplicationId
"yourappscheme://iamback", //deeplinkScheme
).then((value) {
    print( "initialize success: $value" );
}, onError: (err) {
    print( "initialize err: $err" );});

consoleApplicationId — application code from the RuStore console (example: https://console.rustore.ru/apps/123456).
To get the app ID, copy digits from the URL address of the app page in the RuStore Console that appear after apps/.

note

applicationId specified in build.gradle must match applicationId of the APK file you published in the RuStore Console.(https://console.rustore.ru/sign-in).

deeplinkScheme — deeplink scheme that i sused to return to your app after paying with a third party payment app (for example, SberPay or SBP). SDK generates its own host to this scheme.

note

Tye deeplink scheme that is passed in deeplinkScheme must match the scheme specified in AndroidManifest.xml (see Deeplink processing).

Before you start

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 RustoreBillingClient.available() method.If all above conditions are met, true is returned.

RustoreBillingClient.available().then((value) { 
        print("available success $value"); 
}, onError: (err) { 
        print("available err: $err"); 
});

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 RustoreBillingClient.products(ids) method to request the information about products added to your app in RuStore Console.

RustoreBillingClient.products(ids).then((response) {
      for ( final product in response.products) {
        print(product?.productId);
      }
}, onError: (err) {
      print("products err: $err");
});

ids: List<String?> — the list of product IDs. Must not exceed 100 entries.

To specify the product IDs required for the method:

Open RuStore Console.
Click the "Applications" tab.
Select the necessary app.
In the left side menu select "Monetization".
Select product type: "Subscriptions" or "In-App purchases".
Copy the IDs of the required products. These are product ids.

The method returns ProductsResponse

class ProductsResponse {
  int code;
  String? errorMessage;
  String? errorDescription;
  String? traceId;
  List<Product?> products;
  List<DigitalShopGeneralError?> errors;
}

code — response code.
errorMessage — error message for the user.
errorDescription — detailed error message.
traceId — error ID.
errors — errors list for requested products.
products — products list.

DigitalShopGeneralError error structure

class DigitalShopGeneralError {
  String? name;
  int ? code;
  String? description
}

name – error name.
code — error code.
description – error description.

Product structure

class Product {
  String productId;
  String? productType;
  String productStatus;
  String? priceLabel;
  int ? price;
  String? currency;
  String? language;
  String? title;
  String? description;
  String? imageUrl;
  String? promoImageUrl;
  Subscription? subscription;
}

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

Subscription structure

class Subscription {
  SubscriptionPeriod? subscriptionPeriod;
  SubscriptionPeriod? freeTrialPeriod;
  SubscriptionPeriod? gracePeriod;
  String? introductoryPrice;
  String? introductoryPriceAmount;
  SubscriptionPeriod? 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.

SubscriptionPeriod structure

class SubscriptionPeriod {
  int years;
  int months;
  int days;
}

years — amount of years.
months — amount of months.
days — amount of days.

Purchasing product

To purchase product, use the RustoreBillingClient.purchase(id) method.

RustoreBillingClient.purchase(id).then((response) {
      print("purchase success: $response");
    }, onError: (err) {
      print("purchase err: $err");
});

id — product ID assigned to product in RuStore Console (mandatory)

PaymentResult structure

class PaymentResult {
  SuccessInvoice? successInvoice;
  InvalidInvoice? invalidInvoice;
  SuccessPurchase? successPurchase;
  InvalidPurchase? invalidPurchase;
}

SuccessInvoice structure

class SuccessInvoice {
  String invoiceId;
  String finishCode;
}

InvalidInvoice structure

class InvalidInvoice {
  String? invoiceId;
}

SuccessPurchase structure

class SuccessPurchase {
  String finishCode;
  String? orderId;
  String purchaseId;
  String productId;
  String? invoiceId;
  String? subscriptionToken;
  bool? sandbox;
}

InvalidPurchase structure

class InvalidPurchase {
  String? purchaseId;
  String? invoiceId;
  String? orderId;
  int? quantity;
  String? productId;
  int? errorCode;
  bool? sandbox;
}

SuccessInvoice — payments completed with a result.
InvalidInvoice — payments completed without invoice id. They might have been started with an invalid invoice number (for example: an empty line).
SuccessPurchase — successful product purchase result.
InvalidPurchase — payments completed with error.

Possible finishCode statuses

SUCCESSFUL_PAYMENT — payment successful.
CLOSED_BY_USER — canceled by the user.
UNHANDLED_FORM_ERROR — unknown error.
PAYMENT_TIMEOUT — timeout payment error.
DECLINED_BY_SERVER — declined by server.
RESULT_UNKNOWN — unknown payment status.

Getting products list

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

Type/Status	`INVOICE_CREATED`	`CONFIRMED`	`PAID`	`PAUSED`
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 RustoreBillingClient.purchases method.

RustoreBillingClient.purchases().then((response) {
      for ( final product in response.purchases) {
        print(product?.purchaseId);
      }
}, onError: (err) {
      print( "purchases err: $err" );
});

The method returns PurchasesResponse (see below).

class PurchasesResponse {
  int code;
  String? errorMessage;
  String? errorDescription;
  String? traceId;
  List<Purchase?> purchases;
  List<DigitalShopGeneralError?> errors;
}

code — response code.
errorMessage — error message for the user.
errorDescription — detailed error message.
errors — errors list for requested products.
purchases — list of requested purchases.

DigitalShopGeneralError structure (see below).

class DigitalShopGeneralError {
  String? name;
  int ? code;
  String? description;
}

name – error name.
code — error code.
description – error description.

class Purchase {
  String? purchaseId;
  String? productId;
  String? productType;
  String? language;
  String? purchaseTime;
  String? orderId;
  String? amountLabel;
  int? amount;
  String? currency;
  int? quantity;
  String? purchaseState;
  String? developerPayload;
  String? invoiceId;
  String? subscriptionToken;
}

Purchase structure (see below).

purchaseId — product ID.
productId — product ID assigned to product in RuStore Console (mandatory).
description — descriptions in language.
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. Otherwise, it will be generated automatically.
amountLable — formatted price, including currency symbol specified in the language language.
amount — price in minimum currency units.
currency — ISO 4217 currency code.
quantity — product amount (optional).
purchaseState — purchase state.
developerPayload — string with additional order information, that you can specify on purchase initialization.

Getting purchase information

Go get purchase information, use the purchaseInfo method.

RustoreBillingClient.purchaseInfo(purchaseId).then((purchase) {
      print(purchase);
    }, onError: (err) {
      print("Error getPurchaseInfo: $err");
    });

Purchase structure (see below).

class Purchase {
  String? purchaseId;
  String? productId;
  String? productType;
  String? language;
  String? purchaseTime;
  String? orderId;
  String? amountLabel;
  int? amount;
  String? currency;
  int? quantity;
  String? purchaseState;
  String? developerPayload;
  String? invoiceId;
  String? subscriptionToken;
}

purchaseId — product ID.
productId — product ID assigned to product in RuStore Console (mandatory).
description — descriptions in language.
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. Otherwise, it will be generated automatically.
amountLable — formatted price, including currency symbol specified in the language language.
amount — price in minimum currency units.
currency — ISO 4217 currency code.
quantity — product amount (optional).
purchaseState — purchase state.
developerPayload — string with additional order information, that you can specify on purchase initialization.

State model (purchaseState)

CONSUMABLES - purchase state model

NON-CONSUMABLES - purchase state model

(SUBSCRIPTIONS) - purchase state model

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.

caution

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

ConfirmPurchase request

Us the RustoreBillingClient.confirm(id) 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.

RustoreBillingClient.confirm(id).then((response) {
      print( "confirm success: $response" );
    }, onError: (err) {
      print( "confirm err: $err" );
});

id — product ID.

The method returns ConfirmPurchaseResponse (see below).

class ConfirmPurchaseResponse {
  int code;
  String? errorMessage;
  String? errorDescription;
  String? traceId;
  List<DigitalShopGeneralError?> errors;
}

code — response code.
errorMessage — error message for the user.
errorDescription — detailed error message.
traceId — error ID.
errors — errors list for requested products.

DigitalShopGeneralError structure (see below).

class DigitalShopGeneralError {
  String? name;
  int ? code;
  String? description;
}

name – error name.
code — error code.
description – error description.

Server validation

If you need to validate a successful app using API RuStore methods, you can use subscriptionToken in PurchaseResult returned by purchaseProduct on successful purchase.

SubscriptionToken consists of invoiceId and userId of the purchase separated by period: $invoiceId.$userId.

You can also get a subscriptionToken from the Purchase entity. You can retrieve the Purchase entity using the purchases() method.

Event logging

By default, logging in flutter sdk is enabled. You can view log entries using the RuStoreFlutterBillingPlugin tag.

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.

6.0.1

Implementation example​

Prerequisites​

Getting started​

Deeplink handling​

Initialization​

Before you start​

Payments availability check​

Working with SDK​

Retrieving products list​

Purchasing product​

Getting products list​

Getting purchase information​

Consume (confirm) purchase​

Products that require confirmation​

ConfirmPurchase request​

Server validation​

Event logging​

Error handling​

Implementation example

Prerequisites

Getting started

Deeplink handling

Initialization

Before you start

Payments availability check

Working with SDK

Retrieving products list

Purchasing product

Getting products list

Getting purchase information

Consume (confirm) purchase

Products that require confirmation

ConfirmPurchase request

Server validation

Event logging

Error handling