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<?php
declare(strict_types=1);
namespace Automattic\WooCommerce\Gateways\PayPal;
use Automattic\WooCommerce\Enums\OrderStatus;
use Automattic\WooCommerce\Gateways\PayPal\Constants as PayPalConstants;
use Automattic\WooCommerce\Gateways\PayPal\Helper as PayPalHelper;
use Automattic\WooCommerce\Gateways\PayPal\Request as PayPalRequest;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Class WebhookHandler file.
*
* Handles webhook events.
*
* @since 10.5.0
*/
class WebhookHandler {
/**
* Process the webhook event.
*
* @since 10.5.0
*
* @param \WP_REST_Request $request The request object.
* @return void
*/
public function process_webhook( \WP_REST_Request $request ): void {
$data = $request->get_json_params();
if ( ! is_array( $data ) || empty( $data['event_type'] ) || empty( $data['resource'] ) ) {
\WC_Gateway_Paypal::log( 'Invalid PayPal webhook payload: ' . wc_print_r( $data, true ) );
return;
}
\WC_Gateway_Paypal::log( 'Webhook received: ' . wc_print_r( PayPalHelper::redact_data( $data ), true ) );
switch ( $data['event_type'] ) {
case 'CHECKOUT.ORDER.APPROVED':
$this->process_checkout_order_approved( $data );
break;
case 'PAYMENT.CAPTURE.PENDING':
$this->process_payment_capture_pending( $data );
break;
case 'PAYMENT.CAPTURE.COMPLETED':
$this->process_payment_capture_completed( $data );
break;
case 'PAYMENT.AUTHORIZATION.CREATED':
$this->process_payment_authorization_created( $data );
break;
default:
\WC_Gateway_Paypal::log( 'Unhandled PayPal webhook event: ' . wc_print_r( PayPalHelper::redact_data( $data ), true ) );
break;
}
}
/**
* Process the CHECKOUT.ORDER.APPROVED webhook event.
*
* @since 10.5.0
*
* @param array $event The webhook event data.
* @return void
*/
private function process_checkout_order_approved( array $event ): void {
$custom_id = $event['resource']['purchase_units'][0]['custom_id'] ?? '';
$order = PayPalHelper::get_wc_order_from_paypal_custom_id( $custom_id );
if ( ! $order ) {
\WC_Gateway_Paypal::log( 'Invalid order. Custom ID: ' . wc_print_r( $custom_id, true ) );
return;
}
// Skip if the payment is already processed.
$paypal_status = $order->get_meta( PayPalConstants::PAYPAL_ORDER_META_STATUS, true );
if ( in_array( $paypal_status, array( PayPalConstants::STATUS_COMPLETED, PayPalConstants::STATUS_APPROVED ), true ) ) {
return;
}
$status = $event['resource']['status'] ?? null;
$paypal_order_id = $event['resource']['id'] ?? null;
if ( PayPalConstants::STATUS_APPROVED === $status ) {
\WC_Gateway_Paypal::log( 'PayPal payment approved. Order ID: ' . $order->get_id() );
$order->update_meta_data( PayPalConstants::PAYPAL_ORDER_META_STATUS, $status );
// Clear the shipping callback token by setting it to an empty string.
// This is done to prevent the token from being used again for the same order.
// We are not deleting the meta key as we use the existence of the meta key to determine if the token was ever generated for this order.
$order->update_meta_data( PayPalConstants::PAYPAL_ORDER_META_SHIPPING_CALLBACK_TOKEN, '' );
$order->save();
$order->add_order_note(
sprintf(
/* translators: %1$s: PayPal order ID */
__( 'PayPal payment approved. PayPal Order ID: %1$s', 'woocommerce' ),
$paypal_order_id
)
);
$order->save();
// Update the addresses in the order with the addresses from the PayPal order details.
PayPalHelper::update_addresses_in_order( $order, $event['resource'] );
// Authorize or capture the payment after approval.
$paypal_intent = $event['resource']['intent'] ?? null;
$action = PayPalConstants::INTENT_CAPTURE === $paypal_intent ? PayPalConstants::PAYMENT_ACTION_CAPTURE : PayPalConstants::PAYMENT_ACTION_AUTHORIZE;
$links = $event['resource']['links'] ?? array();
if ( ! is_array( $links ) ) {
$links = array();
}
$this->authorize_or_capture_payment( $order, $links, $action );
} else {
// This is unexpected for a CHECKOUT.ORDER.APPROVED event.
\WC_Gateway_Paypal::log( 'PayPal payment approval failed. Order ID: ' . $order->get_id() . ' Status: ' . $status );
$order->add_order_note(
sprintf(
/* translators: %1$s: PayPal order ID, %2$s: Status */
__( 'PayPal payment approval failed. PayPal Order ID: %1$s. Status: %2$s', 'woocommerce' ),
$paypal_order_id,
$status
)
);
}
}
/**
* Process the PAYMENT.CAPTURE.COMPLETED webhook event.
*
* @since 10.5.0
*
* @param array $event The webhook event data.
* @return void
*/
private function process_payment_capture_completed( array $event ): void {
$custom_id = $event['resource']['custom_id'] ?? '';
$order = PayPalHelper::get_wc_order_from_paypal_custom_id( $custom_id );
if ( ! $order ) {
\WC_Gateway_Paypal::log( 'Invalid order. Custom ID: ' . wc_print_r( $custom_id, true ) );
return;
}
// Skip if the payment is already processed.
if ( PayPalConstants::STATUS_COMPLETED === $order->get_meta( PayPalConstants::PAYPAL_ORDER_META_STATUS, true ) ) {
return;
}
$transaction_id = $event['resource']['id'] ?? null;
$status = $event['resource']['status'] ?? null;
$order->set_transaction_id( $transaction_id );
$order->update_meta_data( PayPalConstants::PAYPAL_ORDER_META_CAPTURE_ID, $transaction_id );
$order->update_meta_data( PayPalConstants::PAYPAL_ORDER_META_STATUS, $status );
$order->payment_complete();
$order->add_order_note(
sprintf(
/* translators: %1$s: Transaction ID */
__( 'PayPal payment captured. Transaction ID: %1$s.', 'woocommerce' ),
$transaction_id
)
);
$order->save();
}
/**
* Process the PAYMENT.CAPTURE.PENDING webhook event.
*
* @since 10.5.0
*
* @param array $event The webhook event data.
* @return void
*/
private function process_payment_capture_pending( array $event ): void {
$custom_id = $event['resource']['custom_id'] ?? '';
$order = PayPalHelper::get_wc_order_from_paypal_custom_id( $custom_id );
if ( ! $order ) {
\WC_Gateway_Paypal::log( 'Invalid order. Custom ID: ' . wc_print_r( $custom_id, true ) );
return;
}
// Skip if the payment is already processed.
if ( PayPalConstants::STATUS_COMPLETED === $order->get_meta( PayPalConstants::PAYPAL_ORDER_META_STATUS, true ) ) {
return;
}
$transaction_id = $event['resource']['id'] ?? null;
$status = $event['resource']['status'] ?? null;
$reason = $event['resource']['status_details']['reason'] ?? 'Unknown';
$order->set_transaction_id( $transaction_id );
$order->update_meta_data( PayPalConstants::PAYPAL_ORDER_META_CAPTURE_ID, $transaction_id );
$order->update_meta_data( PayPalConstants::PAYPAL_ORDER_META_STATUS, $status );
/* translators: %s: reason */
$order->update_status( OrderStatus::ON_HOLD, sprintf( __( 'Payment pending (reason: %s).', 'woocommerce' ), $reason ) );
$order->save();
}
/**
* Process the PAYMENT.AUTHORIZATION.CREATED webhook event.
*
* @since 10.5.0
*
* @param array $event The webhook event data.
* @return void
*/
private function process_payment_authorization_created( array $event ): void {
$custom_id = $event['resource']['custom_id'] ?? '';
$order = PayPalHelper::get_wc_order_from_paypal_custom_id( $custom_id );
if ( ! $order ) {
\WC_Gateway_Paypal::log( 'Invalid order. Custom ID: ' . wc_print_r( $custom_id, true ) );
return;
}
// Skip if the payment is already processed.
if ( PayPalConstants::STATUS_COMPLETED === $order->get_meta( PayPalConstants::PAYPAL_ORDER_META_STATUS, true ) ) {
return;
}
$transaction_id = $event['resource']['id'] ?? null;
$order->set_transaction_id( $transaction_id );
$order->update_meta_data( PayPalConstants::PAYPAL_ORDER_META_AUTHORIZATION_ID, $transaction_id );
$order->update_meta_data( PayPalConstants::PAYPAL_ORDER_META_STATUS, PayPalConstants::STATUS_AUTHORIZED );
$order->add_order_note(
sprintf(
/* translators: %1$s: Transaction ID */
__( 'PayPal payment authorized. Transaction ID: %1$s. Change payment status to processing or complete to capture funds.', 'woocommerce' ),
$transaction_id
)
);
$order->update_status( OrderStatus::ON_HOLD );
$order->save();
}
/**
* Capture the payment.
*
* @since 10.5.0
*
* @param \WC_Order $order The order object.
* @param array $links The links from the webhook event.
* @param string $action The action to perform (capture or authorize).
* @return void
*/
private function authorize_or_capture_payment( \WC_Order $order, array $links, string $action ): void {
$action_url = $this->get_action_url( $links, $action );
$payment_gateways = WC()->payment_gateways()->payment_gateways();
if ( ! isset( $payment_gateways['paypal'] ) ) {
\WC_Gateway_Paypal::log( 'PayPal gateway is not available.' );
return;
}
$gateway = $payment_gateways['paypal'];
$paypal_request = new PayPalRequest( $gateway );
$paypal_request->authorize_or_capture_payment( $order, $action_url, $action );
}
/**
* Get the action URL from the links.
*
* @since 10.5.0
*
* @param array $links The links from the webhook event.
* @param string $action The action to perform (capture or authorize).
* @return string|null
*/
private function get_action_url( array $links, string $action ): ?string {
$action_url = null;
foreach ( $links as $link ) {
if ( $action === $link['rel'] && 'POST' === $link['method'] && filter_var( $link['href'], FILTER_VALIDATE_URL ) ) {
$action_url = esc_url_raw( $link['href'] );
break;
}
}
return $action_url;
}
}