add: restrieve setup intent and fix the setup intents response

Author: Alexander (SASh) Alexiev

src/Message/SetupIntents/AbstractRequest.php

@@ -25,15 +25,15 @@ abstract class AbstractRequest extends \Omnipay\Stripe\Message\AbstractRequest
      */
     public function setSetupIntentReference($value)
     {
-        return $this->setParameter('paymentIntentReference', $value);
+        return $this->setParameter('setupIntentReference', $value);
     }
 
     /**
      * @return mixed
      */
     public function getSetupIntentReference()
     {
-        return $this->getParameter('paymentIntentReference');
+        return $this->getParameter('setupIntentReference');
     }
 
 }

src/Message/SetupIntents/Response.php

@@ -74,7 +74,7 @@ public function getCustomerReference()
     public function isSuccessful()
     {
         if (isset($this->data['object']) && 'setup_intent' === $this->data['object']) {
-            return in_array($this->getStatus(), ['succeeded', 'requires_capture']);
+            return in_array($this->getStatus(), ['succeeded', 'requires_payment_method']);
         }
 
         return parent::isSuccessful();
@@ -127,4 +127,18 @@ public function getSetupIntentReference()
 
         return null;
     }
+
+    /**
+     * Get the payment intent reference.
+     *
+     * @return string|null
+     */
+    public function getPaymentMethod()
+    {
+        if (isset($this->data['object']) && 'setup_intent' === $this->data['object']) {
+            return $this->data['payment_method'];
+        }
+
+        return null;
+    }
 }

src/Message/SetupIntents/RetrieveSetupIntentRequest.php

@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * Stripe Create Payment Method Request.
+ */
+namespace Omnipay\Stripe\Message\SetupIntents;
+
+/**
+ * Stripe create setup intent
+ *
+ * ### Example
+ *
+ * <code>
+ *
+ * </code>
+ *
+ * @see \Omnipay\Stripe\Message\PaymentIntents\AttachPaymentMethodRequest
+ * @see \Omnipay\Stripe\Message\PaymentIntents\DetachPaymentMethodRequest
+ * @see \Omnipay\Stripe\Message\PaymentIntents\UpdatePaymentMethodRequest
+ * @link https://stripe.com/docs/api/setup_intents/create
+ */
+class RetrieveSetupIntentRequest extends AbstractRequest
+{
+    /**
+     * @inheritdoc
+     */
+    public function getData()
+    {
+        $this->validate('setupIntentReference');
+
+        return [];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getEndpoint()
+    {
+        return $this->endpoint.'/setup_intents/'.$this->getSetupIntentReference();
+    }
+
+    public function getHttpMethod()
+    {
+        return 'GET';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function createResponse($data, $headers = [])
+    {
+        return $this->response = new Response($this, $data, $headers);
+    }
+}

src/PaymentIntentsGateway.php

@@ -178,4 +178,13 @@ public function createSetupIntent(array $parameters = array())
     {
         return $this->createRequest('\Omnipay\Stripe\Message\SetupIntents\CreateSetupIntentRequest', $parameters);
     }
+    /**
+     * @inheritdoc
+     *
+     * @return \Omnipay\Stripe\Message\SetupIntents\CreateSetupIntentRequest
+     */
+    public function retrieveSetupIntent(array $parameters = array())
+    {
+        return $this->createRequest('\Omnipay\Stripe\Message\SetupIntents\RetrieveSetupIntentRequest', $parameters);
+    }
 }