Fixed new subscription creation with a non Stripe gateway

CHANGELOG.md

@@ -5,6 +5,7 @@
 - Craft Commerce now requires Craft CMS 4.6.0 or later.
 - Fixed a bug where calling `Carts::forgetCart()` wouldn’t completely clear the cart. ([#3353](https://github.com/craftcms/commerce/issues/3353))
 - Fixed a bug where the Edit Order page could become locked when editing an adjustment. ([#3351](https://github.com/craftcms/commerce/issues/3351))
+- Fixed a bug that prevented the creation of a non Stripe subscription. ([#3365](https://github.com/craftcms/commerce/pull/3365))
 
 ## 4.3.3 - 2023-12-14
 

src/controllers/SubscriptionsController.php

@@ -15,6 +15,7 @@
 use craft\commerce\helpers\PaymentForm;
 use craft\commerce\Plugin;
 use craft\commerce\Plugin as Commerce;
+use craft\commerce\stripe\gateways\PaymentIntents;
 use craft\commerce\web\assets\commercecp\CommerceCpAsset;
 use craft\helpers\App;
 use craft\helpers\StringHelper;
@@ -195,15 +196,26 @@ public function actionSubscribe(): ?Response
             try {
                 // We provide backward compatibility for stripe plugin 3.0
                 $paymentFormData = $this->request->getBodyParam(PaymentForm::getPaymentFormParamName($gateway->handle)) ?? [];
-                if (isset($paymentFormData['paymentMethodId'])) {
-                    // throw deprecation error
-                    Craft::$app->getDeprecator()->log('SubscriptionController::create-newPaymentMethod', 'The subscription subscription create action now requires that a default payment source is set up before subscribing.');
+
+                $createPaymentSource = function($gateway, $paymentFormData) use ($plugin) {
                     $paymentForm = $gateway->getPaymentFormModel();
                     $paymentForm->setAttributes($paymentFormData, false);
 
                     if ($paymentForm->validate()) {
                         $plugin->getPaymentSources()->createPaymentSource(Craft::$app->getUser()->getId(), $gateway, $paymentForm);
                     }
+                };
+
+                $exists = class_exists(PaymentIntents::class);
+                /** @phpstan-ignore-next-line */
+                if ($exists && $plan->getGateway() instanceof PaymentIntents) {
+                    Craft::$app->getDeprecator()->log('SubscriptionController::create-newPaymentMethod', 'The subscription create action now requires that a customer’s default payment source is set up before subscribing with Stripe.');
+                    // Only be backward compatible with Stripe if they supply the payment method ID.
+                    if (isset($paymentFormData['paymentMethodId'])) {
+                        $createPaymentSource($gateway, $paymentFormData);
+                    }
+                } else {
+                    $createPaymentSource($gateway, $paymentFormData);
                 }
 
                 $fieldsLocation = $this->request->getParam('fieldsLocation', 'fields');