README

Provides SyncAPI and AsyncAPI schema files and the needed code to be used in a Payment Service Provider App.

Installation

composer require spryker/app-payment

Configure

App Identifier

config/Shared/config_default.php

use Spryker\Shared\AppPayment\AppConstants;

$config[AppConstants::APP_IDENTIFIER] = getenv('APP_IDENTIFIER') ?: 'hello-world';

Testing the AppPayment

You can test the AppPayment as usual with Codeception. Before that you need to run some commands:

composer setup

With these commands you've set up the AppPayment and can start the tests

vendor/bin/codecept build
vendor/bin/codecept run

Plugins

The following plugins can be used inside your Payment Service Provider App.

GlueApplication

\Spryker\Glue\AppPaymentBackendApi\Plugin\GlueApplication\AppPaymentBackendApiRouteProviderPlugin

This plugin provides the routes for the AppPaymentBackendApi module.

Routes provided

/private/initialize-payment - Used from the Tenant side to initialize a payment.
/private/confirm-pre-order-payment - Used from the Tenant side to confirm pre-order payment after the order was persisted.

AppKernel

\Spryker\Zed\AppPayment\Communication\Plugin\AppKernel\ConfigurePaymentMethodsConfigurationAfterSavePlugin
\Spryker\Zed\AppPayment\Communication\Plugin\AppKernel\DeleteTenantPaymentsConfigurationAfterDeletePlugin
\Spryker\Zed\AppPayment\Communication\Plugin\AppKernel\SendAddPaymentMethodMessageConfigurationAfterSavePlugin
\Spryker\Zed\AppPayment\Communication\Plugin\AppKernel\SendDeletePaymentMethodMessagesConfigurationAfterDeletePlugin

AppWebhook

\Spryker\Zed\AppPayment\Communication\Plugin\AppWebhook\PaymentWebhookHandlerPlugin

MessageBroker

\Spryker\Zed\AppPayment\Communication\Plugin\MessageBroker\CancelPaymentMessageHandlerPlugin
\Spryker\Zed\AppPayment\Communication\Plugin\MessageBroker\CapturePaymentMessageHandlerPlugin
\Spryker\Zed\AppPayment\Communication\Plugin\MessageBroker\RefundPaymentMessageHandlerPlugin

MessageBrokerAws

\Spryker\Zed\AppPayment\Communication\Plugin\MessageBrokerAws\ConsumerIdHttpChannelMessageReceiverRequestExpanderPlugin

Extensions

\Spryker\Zed\AppPayment\Dependency\Plugin\AppPaymentPlatformMarketplacePluginInterface
\Spryker\Zed\AppPayment\Dependency\Plugin\AppPaymentPlatformPaymentMethodsPluginInterface
\Spryker\Zed\AppPayment\Dependency\Plugin\AppPaymentPlatformPaymentPagePluginInterface
\Spryker\Zed\AppPayment\Dependency\Plugin\AppPaymentPlatformPluginInterface
\Spryker\Zed\AppPayment\Dependency\Plugin\AppPaymentPlatformPreOrderPluginInterface
\Spryker\Zed\AppPayment\Dependency\Plugin\PaymentTransmissionsRequestExtenderPluginInterface

AppPaymentPlatformMarketplacePluginInterface

You can implement this plugin when your PSP App supports Marketplace capabilities.

AppPaymentPlatformPaymentMethodsPluginInterface

This plugin must be implemented to provide the payment methods that the PSP App supports.

AppPaymentPlatformPaymentPagePluginInterface

This plugin can be implemented to provide a payment page that the PSP App supports. This is only needed when using the redirect flows after the order was created.

AppPaymentPlatformPluginInterface

This is the root plugin which must be implemented to provide the PSP App capabilities from the project level.

AppPaymentPlatformPreOrderPluginInterface

This plugin can be implemented to provide the pre-order capabilities that the PSP App supports.

When using the pre-order payment flow, the InitializePayment API endpoint is used before the order gets persisted and it returns the needed data for an headless approach to add the payment page on project side. Usually, this is done via a provided JavaScript that is send to the frontend in the InitializePayment API call response.

On project side the customer than makes the Payment via the provided JavaScripts and the payment page provided by the PSP provider. After the order is persistzed on the project side a call to the ConfirmPreOrderPayment API endpoint is made to confirm the payment and connect it with the orderReference.

PaymentTransmissionsRequestExtenderPluginInterface

This plugin can be implemented to extend the request data that is send to the PSP App when doing payouts to Merchants. This is usually only needed when the PSP App supports Marketplace capabilities.

Configure the MessageBroker

Add this to your project configuration:

$config[MessageBrokerConstants::MESSAGE_TO_CHANNEL_MAP] =
$config[MessageBrokerAwsConstants::MESSAGE_TO_CHANNEL_MAP] = [
    PaymentAuthorizedTransfer::class => 'payment-events',
    PaymentAuthorizationFailedTransfer::class => 'payment-events',
    PaymentCapturedTransfer::class => 'payment-events',
    PaymentCaptureFailedTransfer::class => 'payment-events',
    PaymentRefundedTransfer::class => 'payment-events',
    PaymentRefundFailedTransfer::class => 'payment-events',
    PaymentCanceledTransfer::class => 'payment-events',
    PaymentCancellationFailedTransfer::class => 'payment-events',
    CancelPaymentTransfer::class => 'payment-commands',
    CapturePaymentTransfer::class => 'payment-commands',
    RefundPaymentTransfer::class => 'payment-commands',
    AddPaymentMethodTransfer::class => 'payment-method-commands',
    UpdatePaymentMethodTransfer::class => 'payment-method-commands',
    DeletePaymentMethodTransfer::class => 'payment-method-commands',
    PaymentCreatedTransfer::class => 'payment-events',
    PaymentUpdatedTransfer::class => 'payment-events',
    // App event
    AppConfigUpdatedTransfer::class => 'app-events',
];

$config[MessageBrokerConstants::CHANNEL_TO_TRANSPORT_MAP] = [
    'app-events' => MessageBrokerAwsConfig::HTTP_TRANSPORT,
    'payment-events' => MessageBrokerAwsConfig::HTTP_TRANSPORT,
    'payment-method-commands' => MessageBrokerAwsConfig::HTTP_TRANSPORT,
    'payment-commands' => MessageBrokerAwsConfig::SQS_TRANSPORT,
];

$config[MessageBrokerAwsConstants::CHANNEL_TO_SENDER_TRANSPORT_MAP] = [
    'app-events' => MessageBrokerAwsConfig::HTTP_TRANSPORT,
    'payment-events' => MessageBrokerAwsConfig::HTTP_TRANSPORT,
    'payment-method-commands' => MessageBrokerAwsConfig::HTTP_TRANSPORT,
];

$config[MessageBrokerAwsConstants::CHANNEL_TO_RECEIVER_TRANSPORT_MAP] = [
    'payment-commands' => MessageBrokerAwsConfig::SQS_TRANSPORT,
];

Configure Payment Methods

Each PSP implementation has different Payment Methods available. Through the \Spryker\Zed\AppPayment\Dependency\Plugin\AppPaymentPlatformPaymentMethodsPluginInterface you can provide the available Payment Methods.

Each Payment Method can also have different configuration details.

Add the plugin interface to your implementation and you can configure the payment methods.

Payment Method default configuration

This package adds endpoints to be used from the SCOS side to each of the configured Payment Methods. The default configuration for each Payment Method is:

The base URL - This is the URL that the SCOS side will use to call the PSP App.
Endpoints - The endpoints that the SCOS side will call on the PSP App.
- authorization - The endpoint to initialize a Payment, /private/initialize-payment
- pre-order-confirmation - The endpint to confirm a PreOrder payment, /private/confirm-pre-order-payment
- pre-order-cancellation - The endpint to cancel a PreOrder payment, /private/cancel-pre-order-payment
- transfer - The endpoint to transfer money to a Merchant, /private/transfers

These are used on the SCOS side by their names. F.e. when the SCOS side wants to initialize a payment it will call the authorization endpoint on the PSP App.

Payment Service Provider with only one Payment Method

A simple example for a PSP with only one Payment Method could look like this:

public function configurePaymentMethods(PaymentMethodConfigurationRequestTransfer $paymentMethodConfigurationRequestTransfer): PaymentMethodConfigurationResponseTransfer
{
    $paymentMethodConfigurationResponseTransfer = new PaymentMethodConfigurationResponseTransfer();

    $checkoutConfigurationTransfer = new CheckoutConfigurationTransfer();
    $checkoutConfigurationTransfer->setStrategy('embedded');
    $checkoutConfigurationTransfer->setScripts([
        ...
    ]);

    $paymentMethodAppConfigurationTransfer = new PaymentMethodAppConfigurationTransfer();
    $paymentMethodAppConfigurationTransfer
        ->setCheckoutConfiguration($checkoutConfigurationTransfer);

    $paymentMethodTransfer = new PaymentMethodTransfer();
    $paymentMethodTransfer
        ->setName('Foo')
        ->setProviderName('Bar')
        ->setPaymentMethodAppConfiguration($paymentMethodAppConfigurationTransfer);

    $paymentMethodConfigurationResponseTransfer->addPaymentMethod($paymentMethodTransfer);

    return $paymentMethodConfigurationResponseTransfer;
}

Here we configure exactly one payment method. The payment method is named "Foo" and the provider is named "Bar". The Payment method also has a configuration that will be persisted on the SCOS side.

The strategy is set to "embedded" which means that the payment page will be embedded in the SCOS checkout. The scripts are the scripts that are needed to embed and run the payment page in the SCOS checkout.

This code runs when the PSP App gets configured. After this method call the so configured methods will be persisted on the App sides database, enriched with default configurations, and via the AddPaymentMethod message sent to the SCOS side.

When the App gets reconfigured and a different number of Payment Methods are configured, the DeletePaymentMethod message will be sent to the SCOS side and the previously configured Payment Methods for the current Tenant will be deleted from the database.

When the PaymentMethod configuration has changed the UpdatePaymentMethod message will be sent to the SCOS side.

Payment Service Provider with multiple Payment Methods

In case you have multiple payment methods, you can add multiple PaymentMethodTransfer objects to the PaymentMethodConfigurationResponseTransfer object. For this, you can get the AppConfigTransfer from the PaymentMethodConfigurationRequestTransfer. An example could look like this:

public function configurePaymentMethods(PaymentMethodConfigurationRequestTransfer $paymentMethodConfigurationRequestTransfer): PaymentMethodConfigurationResponseTransfer
{
    $appConfigTransfer = $paymentMethodConfigurationRequestTransfer->getAppConfig();

    // Contains ['bar'] which was the only one selected through the configuration page
    $configuredPaymentMethods = $appConfigTransfer->getPaymentMethods();

    // These are all methods you can provide which are configurable through the AppStore Catalogs App configuration page
    $availablePaymentMethods = [
        'foo',
        'bar',
        'baz',
    ];

    $paymentMethodConfigurationResponseTransfer = new PaymentMethodConfigurationResponseTransfer();

    foreeach ($availablePaymentMethods as $paymentMethodName) {
        if (!isset($configuredPaymentMethods[$paymentMethodName])) {
            continue;
        }

        $paymentMethodTransfer = new PaymentMethodTransfer();
        $paymentMethodTransfer
            ->setName($paymentMethodName)
            ->setProviderName('PaymentProviderName');

        $paymentMethodConfigurationResponseTransfer->addPaymentMethod($paymentMethodTransfer);
    }

    return $paymentMethodConfigurationResponseTransfer;
}

In thie example you would get one PaymentMethod added to SCOS via the AddPaymentMethod message. The PaymentMethod is named "bar" and the provider is named "PaymentProviderName".

spryker / app-payment

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