PW-455: Support partial refunds for open invoice payment methods (#278)

* PW-455: Support partial refunds for open invoice payment methods

* PW-455: Use Plugin(Interceptor) instead of Event and Observer

* PW-455: Removed observer reference

* PW-455: Refactor

* PW-455: Refactor

* PW-455: Removed plugin and added check on invoice

Gateway/Request/RefundDataBuilder.php

@@ -41,6 +41,11 @@ class RefundDataBuilder implements BuilderInterface
      */
     private $orderPaymentCollectionFactory;
 
+    /**
+     * @var \Adyen\Payment\Model\ResourceModel\Invoice\CollectionFactory
+     */
+    protected $adyenInvoiceCollectionFactory;
+
     /**
      * RefundDataBuilder constructor.
      * @param \Adyen\Payment\Helper\Data $adyenHelper
@@ -48,11 +53,12 @@ class RefundDataBuilder implements BuilderInterface
      */
     public function __construct(
         \Adyen\Payment\Helper\Data $adyenHelper,
-        \Adyen\Payment\Model\ResourceModel\Order\Payment\CollectionFactory $orderPaymentCollectionFactory
-    )
-    {
+        \Adyen\Payment\Model\ResourceModel\Order\Payment\CollectionFactory $orderPaymentCollectionFactory,
+        \Adyen\Payment\Model\ResourceModel\Invoice\CollectionFactory $adyenInvoiceCollectionFactory
+    ) {
         $this->adyenHelper = $adyenHelper;
         $this->orderPaymentCollectionFactory = $orderPaymentCollectionFactory;
+        $this->adyenInvoiceCollectionFactory = $adyenInvoiceCollectionFactory;
     }
 
     /**
@@ -63,7 +69,7 @@ class RefundDataBuilder implements BuilderInterface
     {
         /** @var \Magento\Payment\Gateway\Data\PaymentDataObject $paymentDataObject */
         $paymentDataObject = \Magento\Payment\Gateway\Helper\SubjectReader::readPayment($buildSubject);
-        $amount =  \Magento\Payment\Gateway\Helper\SubjectReader::readAmount($buildSubject);
+        $amount = \Magento\Payment\Gateway\Helper\SubjectReader::readAmount($buildSubject);
 
         $order = $paymentDataObject->getOrder();
         $payment = $paymentDataObject->getPayment();
@@ -96,7 +102,7 @@ class RefundDataBuilder implements BuilderInterface
                 $orderPaymentCollection->addPaymentFilterDescending($payment->getId());
             } elseif ($refundStrategy == "3") {
                 // refund based on ratio
-                $ratio =  $amount / $grandTotal;
+                $ratio = $amount / $grandTotal;
                 $orderPaymentCollection->addPaymentFilterAscending($payment->getId());
             }
 
@@ -109,7 +115,7 @@ class RefundDataBuilder implements BuilderInterface
                         // refund based on ratio calculate refund amount
                         $modificationAmount = $ratio * (
                                 $splitPayment->getAmount() - $splitPayment->getTotalRefunded()
-                        );
+                            );
                     } else {
                         // total authorised amount of the split payment
                         $splitPaymentAmount = $splitPayment->getAmount() - $splitPayment->getTotalRefunded();
@@ -119,7 +125,7 @@ class RefundDataBuilder implements BuilderInterface
                             continue;
                         }
 
-                        // if refunded amount is greather then split payment amount do a full refund
+                        // if refunded amount is greater than split payment amount do a full refund
                         if ($amount >= $splitPaymentAmount) {
                             $modificationAmount = $splitPaymentAmount;
                         } else {
@@ -155,8 +161,81 @@ class RefundDataBuilder implements BuilderInterface
                     "merchantAccount" => $merchantAccount
                 ]
             ];
+
+            $brandCode = $payment->getAdditionalInformation(
+                \Adyen\Payment\Observer\AdyenHppDataAssignObserver::BRAND_CODE
+            );
+
+            if ($this->adyenHelper->isPaymentMethodOpenInvoiceMethod($brandCode)) {
+                $openInvoiceFields = $this->getOpenInvoiceData($payment);
+
+                //There is only one payment, so we add the fields to the first(and only) result
+                $result[0]["additionalData"] = $openInvoiceFields;
+            }
+
         }
-        
+
         return $result;
     }
+
+
+    protected function getOpenInvoiceData($payment)
+    {
+        $formFields = [];
+        $count = 0;
+        $currency = $payment->getOrder()->getOrderCurrencyCode();
+
+        /**
+         * Magento\Sales\Model\Order\Creditmemo
+         */
+        $creditMemo = $payment->getCreditMemo();
+
+        foreach ($creditMemo->getAllItems() as $refundItem) {
+            ++$count;
+            $numberOfItems = $refundItem->getQty();
+
+            $formFields = $this->adyenHelper->createOpenInvoiceLineItem(
+                $formFields,
+                $count,
+                $refundItem->getName(),
+                $refundItem->getPrice(),
+                $currency,
+                $refundItem->getTaxAmount(),
+                $refundItem->getPriceInclTax(),
+                $refundItem->getTaxPercent(),
+                $numberOfItems,
+                $payment
+            );
+
+        }
+
+        // Shipping cost
+        if ($creditMemo->getShippingAmount() > 0) {
+            ++$count;
+            $formFields = $this->adyenHelper->createOpenInvoiceLineShipping(
+                $formFields,
+                $count,
+                $payment->getOrder(),
+                $creditMemo->getShippingAmount(),
+                $creditMemo->getShippingTaxAmount(),
+                $currency,
+                $payment
+            );
+        }
+
+        $formFields['openinvoicedata.numberOfLines'] = $count;
+
+        //Retrieve acquirerReference from the adyen_invoice
+        $invoiceId = $creditMemo->getInvoice()->getId();
+        $invoices = $this->adyenInvoiceCollectionFactory->create()
+            ->addFieldToFilter('invoice_id', $invoiceId);
+
+        $invoice = $invoices->getFirstItem();
+
+        if($invoice) {
+            $formFields['acquirerReference'] = $invoice->getAcquirerReference();
+        }
+
+        return $formFields;
+    }
 }
\ No newline at end of file

Model/ResourceModel/Invoice/Collection.php

+<?php
+/**
+ *                       ######
+ *                       ######
+ * ############    ####( ######  #####. ######  ############   ############
+ * #############  #####( ######  #####. ######  #############  #############
+ *        ######  #####( ######  #####. ######  #####  ######  #####  ######
+ * ###### ######  #####( ######  #####. ######  #####  #####   #####  ######
+ * ###### ######  #####( ######  #####. ######  #####          #####  ######
+ * #############  #############  #############  #############  #####  ######
+ *  ############   ############  #############   ############  #####  ######
+ *                                      ######
+ *                               #############
+ *                               ############
+ *
+ * Adyen Payment Module
+ *
+ * Copyright (c) 2018 Adyen B.V.
+ * This file is open source and available under the MIT license.
+ * See the LICENSE file for more info.
+ *
+ * Author: Adyen <magento@adyen.com>
+ */
+
+namespace Adyen\Payment\Model\ResourceModel\Invoice;
+
+class Collection extends \Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection
+{
+    /**
+     * Construct
+     */
+    public function _construct()
+    {
+        $this->_init('Adyen\Payment\Model\Invoice', 'Adyen\Payment\Model\ResourceModel\Invoice');
+    }
+
+}
\ No newline at end of file