Enable repeat purchases to be done via the purchase (and authorize) methods

This is more compatible with other processors that accept a token or card reference
against the purchase and authorize actions in order to process a new payment using information
stored on file from previous interactions

Author: eileenmcnaughton

README.md

@@ -771,8 +771,8 @@ admin panel.
 * `refund()`
 * `void()` - void a purchase
 * `abort()` - abort an authorization before it is captured
-* `repeatAuthorize()` - new authorization based on past transaction
-* `repeatPurchase()` - new purchase based on past transaction
+* `repeatAuthorize()` - new authorization based on past transaction (deprecated, use authorize with cardReference)
+* `repeatPurchase()` - new purchase based on past transaction (deprecated, use purchase with cardReference)
 * `deleteCard()` - remove a cardReference or token from the account
 
 ### Repeat Authorize/Purchase
@@ -782,10 +782,14 @@ You will need the `transactionReference` of the original transaction.
 The `transactionReference` will be a JSON string containing the four pieces of
 information the gateway needs to reuse the transaction.
 
+Although a separate repeatPurchase/repeatAuthorize request exists it is
+recommended you use purchase along with the transactionReference for
+interoperability with other Omnipay gateways.
+
 ```php
-// repeatAuthorize() or repeatPurchase()
+// use authorize or purchase to process a repeat payment.
 
-$repeatRequest = $gateway->repeatAuthorize([
+$repeatRequest = $gateway->authorize([
     'transactionReference' => $originalTransactionReference,
     // or
     'securityKey' => $originalSecurityKey,

src/Message/AbstractRequest.php

@@ -648,4 +648,25 @@ public function setTransactionReference($value)
 
         return parent::setTransactionReference($value);
     }
+
+    /**
+     * Is this a repeat transaction.
+     *
+     * For an account to repeat transactions based on an
+     * initial approval they need to get continuous authorization
+     * enabled by Sagepay.
+     *
+     * https://www.opayo.co.uk/support/12/36/transaction-types
+     *
+     * These can be identified because the details from the previous
+     * transaction are passed in to be re-used. In this instance
+     * the txn_type is altered and the params sent include the details
+     * of the previous transaction.
+     *
+     * @return bool
+     */
+    protected function isRepeatTransaction()
+    {
+        return !empty($this->getRelatedTransactionId());
+    }
 }

src/Message/DirectAuthorizeRequest.php

@@ -21,7 +21,9 @@ class DirectAuthorizeRequest extends AbstractRequest
      */
     public function getTxType()
     {
-        if ($this->getUseAuthenticate()) {
+        if ($this->isRepeatTransaction()) {
+            return static::TXTYPE_REPEATDEFERRED;
+        } elseif ($this->getUseAuthenticate()) {
             return static::TXTYPE_AUTHENTICATE;
         } else {
             return static::TXTYPE_DEFERRED;
@@ -41,7 +43,12 @@ public function getService()
      */
     protected function getBaseAuthorizeData()
     {
-        $this->validate('amount', 'card', 'transactionId');
+        $this->validate('amount', 'transactionId');
+        if (!$this->isRepeatTransaction()) {
+            // If we have a related transation id the card is not required
+            // as we are using the cardReference.
+            $this->validate('card');
+        }
 
         // Start with the authorisation and API version details.
         $data = $this->getBaseData();
@@ -63,18 +70,27 @@ protected function getBaseAuthorizeData()
             $data['ReferrerID'] = $this->getReferrerId();
         }
 
-        // Billing details
-
-        $data = $this->getBillingAddressData($data);
-
-        // Shipping details
-
-        $data = $this->getDeliveryAddressData($data);
+        if ($this->getRelatedTransactionId()) {
+            // The following parameters allow the related transaction ID to be re-used.
+            $data['RelatedVendorTxCode'] = $this->getRelatedTransactionId();
+            $data['RelatedVPSTxId'] = $this->getVpsTxId();
+            $data['RelatedSecurityKey'] = $this->getSecurityKey();
+            $data['RelatedTxAuthNo'] = $this->getTxAuthNo();
+        }
 
         $card = $this->getCard();
+        // Card is optional for repeatPurchase so only process the following
+        // if it is present.
+        if ($card) {
+            // Billing details
+            $data = $this->getBillingAddressData($data);
+
+            // Shipping details
+            $data = $this->getDeliveryAddressData($data);
 
-        if ($card->getEmail()) {
-            $data['CustomerEMail'] = $card->getEmail();
+            if ($card->getEmail()) {
+                $data['CustomerEMail'] = $card->getEmail();
+            }
         }
 
         if ((bool)$this->getUseOldBasketFormat()) {

src/Message/ServerAuthorizeRequest.php

@@ -9,7 +9,7 @@ class ServerAuthorizeRequest extends DirectAuthorizeRequest
 {
     public function getService()
     {
-        return static::SERVICE_SERVER_REGISTER;
+        return $this->isRepeatTransaction() ? static::SERVICE_REPEAT : static::SERVICE_SERVER_REGISTER;
     }
 
     /**
@@ -20,9 +20,7 @@ public function getService()
      */
     public function getData()
     {
-        if (! $this->getReturnUrl()) {
-            $this->validate('notifyUrl');
-        }
+        $this->checkRequiredFields();
 
         $data = $this->getBaseAuthorizeData();
 
@@ -82,4 +80,27 @@ protected function getBaseAuthorizeData()
 
         return $data;
     }
+
+    /**
+     * Check necessary fields are passed in.
+     *
+     * @throws \Omnipay\Common\Exception\InvalidRequestException
+     */
+    protected function checkRequiredFields()
+    {
+        if (!$this->isRepeatTransaction()) {
+            if (!$this->getReturnUrl()) {
+                $this->validate('notifyUrl');
+            }
+        } else {
+            $this->validate(
+                'relatedTransactionId',
+                'vpsTxId',
+                'securityKey',
+                'txAuthNo',
+                'currency',
+                'description'
+            );
+        }
+    }
 }

src/Message/ServerPurchaseRequest.php

@@ -19,6 +19,6 @@ public function getData()
      */
     public function getTxType()
     {
-        return static::TXTYPE_PAYMENT;
+        return $this->getRelatedTransactionId() ? static::TXTYPE_REPEAT : static::TXTYPE_PAYMENT;
     }
 }

tests/Message/ServerRepeatPurchaseViaPurchaseRequestTest.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Omnipay\SagePay\Message;
+
+use Omnipay\Tests\TestCase;
+
+/**
+ * Class SharedRepeatPurchaseViaPurchaseRequestTest
+ *
+ * Tests for using the purchase action to process repeat
+ * purchases.
+ *
+ * @package Omnipay\SagePay\Message
+ */
+class ServerRepeatPurchaseViaPurchaseRequestTest extends TestCase
+{
+    /**
+     * @var \Omnipay\SagePay\Message\SharedPurchaseRequest $request
+     */
+    protected $request;
+
+    public function setUp()
+    {
+        parent::setUp();
+
+        $this->request = new ServerPurchaseRequest($this->getHttpClient(), $this->getHttpRequest());
+        $this->request->initialize(
+            array(
+                'amount' => '12.00',
+                'currency' => 'EUR',
+                'transactionId' => '123',
+            )
+        );
+    }
+
+    public function testSettingOfRelatedTransaction()
+    {
+        $relatedTransactionRef =
+        '{"SecurityKey":"F6AF4AIB1G","TxAuthNo":"1518884596","VPSTxId":"{9EC5D0BC-A816-E8C3-859A-55C1E476E7C2}","VendorTxCode":"D6429BY7x2217743"}';
+      $this->request->setTransactionReference($relatedTransactionRef);
+      $this->request->setDescription('testSettingOfRelatedTransaction');
+      $data = $this->request->getData();
+
+      $this->assertEquals('12.00', $data['Amount'], 'Transaction amount does not match');
+      $this->assertEquals('EUR', $data['Currency'], 'Currency code does not match');
+      $this->assertEquals('123', $data['VendorTxCode'], 'Transaction ID does not match');
+      $this->assertEquals('F6AF4AIB1G', $data['RelatedSecurityKey'], 'Security Key does not match');
+      $this->assertEquals('{9EC5D0BC-A816-E8C3-859A-55C1E476E7C2}', $data['RelatedVPSTxId'],
+        'Related VPSTxId does not match');
+      $this->assertEquals('D6429BY7x2217743', $data['RelatedVendorTxCode'], 'Related VendorTxCode does not match');
+      $this->assertEquals('1518884596', $data['RelatedTxAuthNo'], 'Related TxAuthNo does not match');
+
+        $this->assertEquals('REPEAT', $data['TxType']);
+        $this->assertEquals('repeat', $this->request->getService());
+    }
+
+}