Hide 'Create Account' on checkout if account exists for customer

Magewire/CreateAccount.php

@@ -0,0 +1,49 @@
+<?php declare(strict_types=1);
+/**
+ * @copyright   Copyright (c) Vendic B.V https://vendic.nl/
+ */
+
+namespace Vendic\HyvaCheckoutCreateAccount\Magewire;
+
+use Magento\Checkout\Model\Session;
+use Magento\Customer\Api\CustomerRepositoryInterface;
+use Magento\Framework\Exception\NoSuchEntityException;
+use Magewirephp\Magewire\Component;
+
+class CreateAccount extends Component
+{
+    private const ACCOUNT_EXISTS = 'account_exists';
+
+    /**
+     * @var bool
+     */
+    public $accountExists = false;
+
+    /**
+     * @var array
+     */
+    public $listeners = ['email_address_updated' => 'hideIfAccountExists'];
+
+    public function __construct(
+        private CustomerRepositoryInterface $customerRepository,
+        private Session $checkoutSession
+    ) {
+    }
+
+    public function mount(): void
+    {
+        $this->accountExists = $this->checkoutSession->getData(self::ACCOUNT_EXISTS) ?? false;
+    }
+
+    public function hideIfAccountExists(string $email): void
+    {
+        try {
+            $this->customerRepository->get($email);
+            $this->accountExists = true;
+            $this->checkoutSession->setData(self::ACCOUNT_EXISTS, true);
+        } catch (NoSuchEntityException) {
+            $this->accountExists = false;
+            $this->checkoutSession->setData(self::ACCOUNT_EXISTS, false);
+        }
+    }
+}

Model/Form/Field/HideCreateAccountModifier.php

@@ -0,0 +1,35 @@
+<?php declare(strict_types=1);
+
+namespace Vendic\HyvaCheckoutCreateAccount\Model\Form\Field;
+
+use Hyva\Checkout\Magewire\Checkout\AddressView\MagewireAddressFormInterface;
+use Hyva\Checkout\Model\Form\EntityFieldInterface;
+use Hyva\Checkout\Model\Form\EntityFormInterface;
+use Hyva\Checkout\Model\Form\EntityFormModifierInterface;
+use Magewirephp\Magewire\Component;
+
+/**
+ * @copyright   Copyright (c) Vendic B.V https://vendic.nl/
+ */
+class HideCreateAccountModifier implements EntityFormModifierInterface
+{
+
+    public function apply(EntityFormInterface $form): EntityFormInterface
+    {
+        $form->registerModificationListener(
+            'hide_create_account_if_already_exists',
+            'form:shipping:email:updated',
+            function (
+                EntityFormInterface $form,
+                EntityFieldInterface $field,
+                MagewireAddressFormInterface $addressComponent
+            ) {
+                /** @var Component $addressComponent */
+                $addressComponent->emit('email_address_updated', $field->getValue());
+                return $form;
+            }
+        );
+
+        return $form;
+    }
+}

etc/frontend/di.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <type name="Hyva\Checkout\Model\Form\EntityForm\EavAttributeShippingAddressForm">
+        <arguments>
+            <argument name="entityFormModifiers" xsi:type="array">
+                <item name="hide_create_account_modifier" xsi:type="object">
+                    Vendic\HyvaCheckoutCreateAccount\Model\Form\Field\HideCreateAccountModifier
+                </item>
+            </argument>
+        </arguments>
+    </type>
+</config>
+

view/frontend/layout/hyva_checkout_components.xml

@@ -5,8 +5,12 @@
         <referenceContainer name="checkout.section.quote-actions">
             <container name="create-account.wrapper" htmlTag="div" htmlClass="mt-4">
                 <block name="create-account"
-                       template="Vendic_HyvaCheckoutCreateAccount::create-account.phtml"
                        ifconfig="hyva_themes_checkout/new_customer/enable">
+                    <arguments>
+                        <argument name="magewire" xsi:type="object">
+                            Vendic\HyvaCheckoutCreateAccount\Magewire\CreateAccount
+                        </argument>
+                    </arguments>
                     <block name="create-account.checkbox" as="checkbox">
                         <arguments>
                             <argument name="magewire" xsi:type="object">

view/frontend/templates/magewire/create-account.phtml

@@ -0,0 +1,26 @@
+<?php declare(strict_types=1);
+
+/** @var \Magento\Framework\Escaper $escaper */
+/** @var \Magento\Framework\View\Element\Template $block */
+/** @var \Hyva\Theme\Model\ViewModelRegistry $viewModels */
+/** @var \Vendic\HyvaCheckoutCreateAccount\Magewire\CreateAccount $magewire */
+/** @var \Vendic\HyvaCheckoutCreateAccount\ViewModel\GuestChecker $guestCheckerViewModel */
+$guestCheckerViewModel = $viewModels->require(\Vendic\HyvaCheckoutCreateAccount\ViewModel\GuestChecker::class);
+
+if (!$guestCheckerViewModel->isCustomerGuest()) {
+    return;
+}
+
+?>
+<div wire:model="accountExists">
+    <?php if (!$magewire->accountExists): ?>
+        <div class="flex gap-x-4">
+            <div class="flex items-center">
+                <?= $block->getChildHtml('checkbox') ?>
+            </div>
+            <div class="flex-1 gap-y-2">
+                <label for="create-account"><?= $escaper->escapeHtml(__('Create Account')) ?></label>
+            </div>
+        </div>
+    <?php endif; ?>
+</div>