Add Klarna support

src/Magewire/Checkout/Payment/KlarnaProcessor.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rvvup\PaymentsHyvaCheckout\Magewire\Checkout\Payment;
+
+class KlarnaProcessor extends AbstractProcessor
+{
+    public function getMethodCode(): string
+    {
+        return 'rvvup_KLARNA';
+    }
+
+    public function placeOrder(): void
+    {
+        $this->loadPaymentActions();
+        $redirectUrl = $this->getRedirectUrl();
+        $this->redirect($redirectUrl);
+    }
+}

src/view/frontend/layout/hyva_checkout_index_index.xml

@@ -100,6 +100,17 @@
                 </arguments>
             </block>
 
+            <block name="checkout.payment.method.rvvup.klarna-processor"
+                   as="rvvup.klarna-processor"
+                   template="Rvvup_PaymentsHyvaCheckout::component/payment/klarna-processor.phtml"
+                   after="hyva.checkout.main">
+                <arguments>
+                    <argument name="magewire" xsi:type="object">
+                        Rvvup\PaymentsHyvaCheckout\Magewire\Checkout\Payment\KlarnaProcessor
+                    </argument>
+                </arguments>
+            </block>
+
             <block name="checkout.payment.method.rvvup.assets"
                    as="rvvup.assets"
                    template="Rvvup_PaymentsHyvaCheckout::component/payment/assets.phtml"

src/view/frontend/templates/component/payment/klarna-processor.phtml

@@ -0,0 +1,32 @@
+<?php
+declare(strict_types=1);
+
+use Magento\Framework\View\Element\Template;
+use Magento\Framework\Escaper;
+
+/** @var Template $block */
+/** @var Escaper $escaper */
+/** @var \Rvvup\PaymentsHyvaCheckout\Magewire\Checkout\Payment\ClearpayProcessor $magewire */
+?>
+<div wire:ignore>
+<script>
+    (() => {
+        window.addEventListener('checkout:payment:method-activate', event => {
+            if (event.detail.method !== 'rvvup_KLARNA') {
+                return;
+            }
+
+            const component = Magewire.find('<?= $escaper->escapeJs($block->getNameInLayout()) ?>');
+            hyvaCheckout.payment.activate('rvvup_KLARNA', {
+                placeOrderViaJs() {
+                    return document.querySelector('[wire\\:key="rvvup_KLARNA"].active') !== null;
+                },
+
+                placeOrder() {
+                    return component.placeOrder();
+                }
+            }, document.querySelector('[wire\\:key="rvvup_KLARNA"].active'));
+        });
+    })();
+</script>
+</div>