Fix Klarna line item values

Gateway/Request/CaptureDataBuilder.php

@@ -102,7 +102,7 @@ class CaptureDataBuilder implements BuilderInterface
         // The latest invoice will contain only the selected items(and quantities) for the (partial) capture
         $latestInvoice = $invoices->getLastItem();
 
-        foreach ($latestInvoice->getItemsCollection() as $invoiceItem) {
+        foreach ($latestInvoice->getItems() as $invoiceItem) {
             ++$count;
             $numberOfItems = (int)$invoiceItem->getQty();
             $formFields = $this->adyenHelper->createOpenInvoiceLineItem(
@@ -113,7 +113,7 @@ class CaptureDataBuilder implements BuilderInterface
                 $currency,
                 $invoiceItem->getTaxAmount(),
                 $invoiceItem->getPriceInclTax(),
-                $invoiceItem->getTaxPercent(),
+                $invoiceItem->getOrderItem()->getTaxPercent(),
                 $numberOfItems,
                 $payment,
                 $invoiceItem->getId()

Gateway/Request/CheckoutDataBuilder.php

@@ -219,15 +219,15 @@ class CheckoutDataBuilder implements BuilderInterface
 
         foreach ($this->quote->getAllVisibleItems() as $item) {
 
-            $numberOfItems = (int)$item->getQtyOrdered();
+            $numberOfItems = (int)$item->getQty();
 
             // Summarize the discount amount item by item
             $discountAmount += $item->getDiscountAmount();
 
-            $priceExcludingTax = $item->getPriceInclTax() - $item->getTaxAmount();
-            $formattedPriceExcludingTax = $this->adyenHelper->formatAmount($priceExcludingTax, $currency);
+            $formattedPriceExcludingTax = $this->adyenHelper->formatAmount($item->getPrice(), $currency);
 
-            $formattedTaxAmount = $this->adyenHelper->formatAmount($item->getTaxAmount(), $currency);
+            $taxAmount = $item->getPrice() * ($item->getTaxPercent() / 100);
+            $formattedTaxAmount = $this->adyenHelper->formatAmount($taxAmount, $currency);
             $formattedTaxPercentage = $item->getTaxPercent() * 100;
 
             $formFields['lineItems'][] = [
@@ -236,7 +236,7 @@ class CheckoutDataBuilder implements BuilderInterface
                 'amountExcludingTax' => $formattedPriceExcludingTax,
                 'taxAmount' => $formattedTaxAmount,
                 'description' => $item->getName(),
-                'quantity' => $item->getQty(),
+                'quantity' => $numberOfItems,
                 'taxCategory' => $item->getProduct()->getAttributeText('tax_class_id'),
                 'taxPercentage' => $formattedTaxPercentage
             ];

Gateway/Request/RefundDataBuilder.php

@@ -177,7 +177,10 @@ class RefundDataBuilder implements BuilderInterface
         return $result;
     }
 
-
+    /**
+     * @param \Magento\Payment\Model\InfoInterface $payment
+     * @return array|mixed
+     */
     protected function getOpenInvoiceData($payment)
     {
         $formFields = [];
@@ -185,11 +188,11 @@ class RefundDataBuilder implements BuilderInterface
         $currency = $payment->getOrder()->getOrderCurrencyCode();
 
         /**
-         * Magento\Sales\Model\Order\Creditmemo
+         * @var \Magento\Sales\Model\Order\Creditmemo $creditMemo
          */
         $creditMemo = $payment->getCreditMemo();
 
-        foreach ($creditMemo->getAllItems() as $refundItem) {
+        foreach ($creditMemo->getItems() as $refundItem) {
             ++$count;
             $numberOfItems = (int)$refundItem->getQty();
 
@@ -201,7 +204,7 @@ class RefundDataBuilder implements BuilderInterface
                 $currency,
                 $refundItem->getTaxAmount(),
                 $refundItem->getPriceInclTax(),
-                $refundItem->getTaxPercent(),
+                $refundItem->getOrderItem()->getTaxPercent(),
                 $numberOfItems,
                 $payment,
                 $refundItem->getId()