776.diff

diff --git a/Service/Order/Lines/Generator/MagentoRewardPoints.php b/Service/Order/Lines/Generator/MagentoRewardPoints.php
new file mode 100644
index 00000000..66513849
--- /dev/null
+++ b/Service/Order/Lines/Generator/MagentoRewardPoints.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Mollie\Payment\Service\Order\Lines\Generator;
+
+use Magento\Sales\Api\Data\OrderInterface;
+use Mollie\Payment\Helper\General;
+
+class MagentoRewardPoints implements GeneratorInterface
+{
+    /**
+     * @var General
+     */
+    private $mollieHelper;
+
+    public function __construct(
+        General $mollieHelper
+    ) {
+        $this->mollieHelper = $mollieHelper;
+    }
+
+    public function process(OrderInterface $order, array $orderLines): array
+    {
+        $extensionAttributes = $order->getExtensionAttributes();
+
+        if (!method_exists($extensionAttributes, 'getRewardCurrencyAmount')) {
+            return $orderLines;
+        }
+
+        $amount = $extensionAttributes->getRewardCurrencyAmount();
+        if ($amount === null) {
+            return $orderLines;
+        }
+
+        $forceBaseCurrency = (bool)$this->mollieHelper->useBaseCurrency($order->getStoreId());
+        if ($forceBaseCurrency) {
+            $amount = $extensionAttributes->getBaseRewardCurrencyAmount();
+        }
+
+        $currency = $forceBaseCurrency ? $order->getBaseCurrencyCode() : $order->getOrderCurrencyCode();
+
+        $orderLines[] = [
+            'type' => 'surcharge',
+            'name' => 'Reward Points',
+            'quantity' => 1,
+            'unitPrice' => $this->mollieHelper->getAmountArray($currency, -$amount),
+            'totalAmount' => $this->mollieHelper->getAmountArray($currency, -$amount),
+            'vatRate' => 0,
+            'vatAmount' => $this->mollieHelper->getAmountArray($currency, 0.0),
+        ];
+
+        return $orderLines;
+    }
+}
diff --git a/Service/Order/Lines/OrderLinesProcessor.php b/Service/Order/Lines/OrderLinesProcessor.php
index 5f760c3d..746585e1 100644
--- a/Service/Order/Lines/OrderLinesProcessor.php
+++ b/Service/Order/Lines/OrderLinesProcessor.php
@@ -23,13 +23,7 @@ public function __construct(
         $this->processors = $processors;
     }
 
-    /**
-     * @param array $orderLine
-     * @param OrderInterface $order
-     * @param OrderItemInterface|null $orderItem
-     * @return array
-     */
-    public function process(array $orderLine, OrderInterface $order, OrderItemInterface $orderItem = null)
+    public function process(array $orderLine, OrderInterface $order, OrderItemInterface $orderItem = null): array
     {
         foreach ($this->processors as $processor) {
             $orderLine = $processor->process($orderLine, $order, $orderItem);
@@ -37,4 +31,4 @@ public function process(array $orderLine, OrderInterface $order, OrderItemInterf
 
         return $orderLine;
     }
-}
\ No newline at end of file
+}
diff --git a/etc/di.xml b/etc/di.xml
index 312a24c8..41a65097 100644
--- a/etc/di.xml
+++ b/etc/di.xml
@@ -161,6 +161,7 @@
                 <item name="magento_giftwrapping" xsi:type="object">Mollie\Payment\Service\Order\Lines\Generator\MagentoGiftWrapping</item>
                 <item name="geissweb_euvat" xsi:type="object">Mollie\Payment\Service\Order\Lines\Generator\GeisswebEuvat</item>
                 <item name="cart_rule_discount" xsi:type="object">Mollie\Payment\Service\Order\Lines\Generator\ShippingDiscount</item>
+                <item name="magento_reward_points" xsi:type="object">Mollie\Payment\Service\Order\Lines\Generator\MagentoRewardPoints</item>
             </argument>
         </arguments>
     </type>