From ab1880f0da2d8b8c3d958d12f4cf90ff802c700a Mon Sep 17 00:00:00 2001
From: Emili Castells Guasch <ecastells@MacBook-Air-de-Emili.local>
Date: Tue, 11 Jul 2023 12:44:30 +0200
Subject: [PATCH] Add parent order previous transaction id to subscription

---
 .../ppcp-subscription/src/SubscriptionModule.php  | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/modules/ppcp-subscription/src/SubscriptionModule.php b/modules/ppcp-subscription/src/SubscriptionModule.php
index 4f971e13e..a33c189e8 100644
--- a/modules/ppcp-subscription/src/SubscriptionModule.php
+++ b/modules/ppcp-subscription/src/SubscriptionModule.php
@@ -13,6 +13,7 @@ use Exception;
 use WC_Product;
 use WooCommerce\PayPalCommerce\ApiClient\Endpoint\BillingSubscriptions;
 use WooCommerce\PayPalCommerce\ApiClient\Exception\PayPalApiException;
+use WooCommerce\PayPalCommerce\ApiClient\Repository\OrderRepository;
 use WooCommerce\PayPalCommerce\Onboarding\Environment;
 use WooCommerce\PayPalCommerce\Vendor\Dhii\Container\ServiceProvider;
 use WooCommerce\PayPalCommerce\Vendor\Dhii\Modular\Module\ModuleInterface;
@@ -26,6 +27,7 @@ use WooCommerce\PayPalCommerce\WcGateway\Gateway\PayPalGateway;
 use WooCommerce\PayPalCommerce\WcGateway\Gateway\CreditCardGateway;
 use WooCommerce\PayPalCommerce\Vendor\Interop\Container\ServiceProviderInterface;
 use WooCommerce\PayPalCommerce\Vendor\Psr\Container\ContainerInterface;
+use WooCommerce\PayPalCommerce\WcGateway\Processor\TransactionIdHandlingTrait;
 use WooCommerce\PayPalCommerce\WcGateway\Settings\Settings;
 use WooCommerce\PayPalCommerce\WcGateway\Exception\NotFoundException;
 
@@ -34,6 +36,8 @@ use WooCommerce\PayPalCommerce\WcGateway\Exception\NotFoundException;
  */
 class SubscriptionModule implements ModuleInterface {
 
+	use TransactionIdHandlingTrait;
+
 	/**
 	 * {@inheritDoc}
 	 */
@@ -76,8 +80,15 @@ class SubscriptionModule implements ModuleInterface {
 
 				if(count($subscription->get_related_orders()) === 1) {
 					$parent_order = $subscription->get_parent();
-					// get transaction id
-					// add trans as meta to sub
+					if ( is_a( $parent_order, WC_Order::class ) ) {
+						$order_repository = $c->get('api.repository.order');
+						$order = $order_repository->for_wc_order($parent_order);
+						$transaction_id = $this->get_paypal_order_transaction_id( $order );
+						if ( $transaction_id ) {
+							$subscription->update_meta_data( 'ppcp_previous_transaction_reference', $transaction_id );
+							$subscription->save();
+						}
+					}
 				}
 			}
 		);