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<?php
namespace Give\Controller;
use Exception;
use Give\PaymentGateways\PayPalCommerce\Repositories\MerchantDetails;
use Give\PaymentGateways\PayPalCommerce\Repositories\Webhooks;
use Give\PaymentGateways\PayPalCommerce\DataTransferObjects\PayPalWebhookHeaders;
use Give\PaymentGateways\PayPalCommerce\Webhooks\WebhookRegister;
class PayPalWebhooks {
/**
* @since 2.8.0
*
* @var MerchantDetails
*/
private $merchantRepository;
/**
* @var Webhooks
*/
private $webhookRepository;
/**
* @since 2.9.0
*
* @var WebhookRegister
*/
private $webhookRegister;
/**
* PayPalWebhooks constructor.
*
* @since 2.8.0
*
* @param MerchantDetails $merchantRepository
* @param WebhookRegister $register
* @param Webhooks $webhookRepository
*/
public function __construct( MerchantDetails $merchantRepository, WebhookRegister $register, Webhooks $webhookRepository ) {
$this->merchantRepository = $merchantRepository;
$this->webhookRegister = $register;
$this->webhookRepository = $webhookRepository;
}
/**
* Handles all webhook event requests. First it verifies that authenticity of the event with
* PayPal, and then it passes the event along to the appropriate listener to finish.
*
* @since 2.8.0
*
* @throws Exception
*/
public function handle() {
if ( ! $this->merchantRepository->accountIsConnected() ) {
return;
}
$merchantDetails = $this->merchantRepository->getDetails();
$event = json_decode( file_get_contents( 'php://input' ), false );
// If we receive an event that we're not expecting, just ignore it
if ( ! $this->webhookRegister->hasEventRegistered( $event->event_type ) ) {
return;
}
$payPalHeaders = PayPalWebhookHeaders::fromHeaders( getallheaders() );
if ( ! $this->webhookRepository->verifyEventSignature( $merchantDetails->accessToken, $event, $payPalHeaders ) ) {
give_record_gateway_error(
'Failed webhook event verification',
print_r(
[
'merchant' => $merchantDetails,
'event' => $event,
'headers' => getallheaders(),
],
true
)
);
throw new Exception( 'Failed event verification' );
}
try {
$this->webhookRegister
->getEventHandler( $event->event_type )
->processEvent( $event );
} catch ( Exception $exception ) {
$eventType = empty( $event->event_type ) ? 'Unknown' : $event->event_type;
give_record_gateway_error( "Error processing webhook: {$eventType}", print_r( $event, true ) );
throw $exception;
}
}
}