Fix Stripe Link errors and potential duplicate payments when purchasing a subscription product (#3304)

* Use link to create link payment method objects

* Add changelog entries

* Add comment

---------

Co-authored-by: Danae Millan <[email protected]>

Author: james-allan

changelog.txt

@@ -1,6 +1,7 @@
 *** Changelog ***
 
 = 8.5.2 - xxxx-xx-xx =
+* Fix - Fixed errors when using Link to purchase subscription products that could lead to duplicate payment attempts.
 * Fix - Prevent failures creating SetupIntents when using a non-saved payment method on the Legacy checkout experience.
 
 = 8.5.1 - 2024-07-12 =

includes/payment-methods/class-wc-stripe-upe-payment-gateway.php

@@ -2188,8 +2188,14 @@ private function handle_saving_payment_method( WC_Order $order, $payment_method_
 		$customer = new WC_Stripe_Customer( $user->ID );
 		$customer->clear_cache();
 
+		// If the payment method object is a Link payment method, use the Link payment method instance to create the payment token.
+		if ( isset( $payment_method_object->type ) && 'link' === $payment_method_object->type ) {
+			$payment_method_instance = $this->payment_methods['link'];
+		} else {
+			$payment_method_instance = $this->payment_methods[ $payment_method_type ];
+		}
+
 		// Create a payment token for the user in the store.
-		$payment_method_instance = $this->payment_methods[ $payment_method_type ];
 		$payment_method_instance->create_payment_token_for_user( $user->ID, $payment_method_object );
 
 		// Add the payment method information to the order.

readme.txt

@@ -129,6 +129,7 @@ If you get stuck, you can ask for help in the Plugin Forum.
 == Changelog ==
 
 = 8.5.2 - xxxx-xx-xx =
+* Fix - Fixed errors when using Link to purchase subscription products that could lead to duplicate payment attempts.
 * Fix - Prevent failures creating SetupIntents when using a non-saved payment method on the Legacy checkout experience.
 
 [See changelog for all versions](https://raw.githubusercontent.com/woocommerce/woocommerce-gateway-stripe/trunk/changelog.txt).