done

app/Loader.php

@@ -4,12 +4,30 @@
 
 namespace BeycanPress\CryptoPay\WPForms;
 
+use BeycanPress\CryptoPay\Integrator\Helpers;
+
 class Loader
 {
     /**
      * Loader constructor.
      */
     public function __construct()
     {
+        Helpers::registerIntegration('wpforms');
+
+        // add transaction page
+        Helpers::createTransactionPage(
+            esc_html__('WPForms Transactions', 'wpforms-cryptopay'),
+            'wpforms',
+            10,
+            [
+                'orderId' => function ($tx) {
+                    return Helpers::run('view', 'components/link', [
+                        'url' => sprintf(admin_url('admin.php?page=wpforms-payments&view=payment&payment_id=%d'), $tx->orderId), // @phpcs:ignore
+                        'text' => sprintf(esc_html__('View payment #%d', 'wpforms-cryptopay'), $tx->orderId)
+                    ]);
+                }
+            ]
+        );
     }
 }

app/Payments.php

@@ -0,0 +1,179 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BeycanPress\CryptoPay\WPForms;
+
+// phpcs:disable Generic.Files.InlineHTML
+// phpcs:disable Generic.Files.LineLength
+// phpcs:disable PSR1.Methods.CamelCapsMethodName
+// phpcs:disable Squiz.NamingConventions.ValidVariableName
+// phpcs:disable SlevomatCodingStandard.TypeHints.PropertyTypeHint
+// phpcs:disable SlevomatCodingStandard.TypeHints.ParameterTypeHint
+
+class Payments
+{
+    /**
+     * @var string
+     */
+    private $slug;
+
+    /**
+     * @var string
+     */
+    private $name;
+
+    /**
+     * @var bool
+     */
+    private $recommended = true;
+
+    /**
+     * @var string
+     */
+    private $icon = '';
+
+    /**
+     * @var array $form_data
+     */
+    private $form_data = [];
+
+    /**
+     * @param string $name
+     * @param string $slug
+     * Initialize the class.
+     */
+    public function __construct(string $name, string $slug)
+    {
+        $this->name      = $name;
+        $this->slug      = $slug;
+        $this->icon      = WPFORMS_CRYPTOPAY_URL . 'assets/images/icon.svg';
+        $this->form_data = $this->getFormData();
+
+        add_filter('wpforms_payments_available', [$this, 'registerPayment']);
+        add_action('wpforms_payments_panel_content', [$this, 'builderOutput'], 0);
+        add_action('wpforms_payments_panel_sidebar', [$this, 'builderSidebar'], 0);
+        add_filter(
+            'wpforms_admin_education_addons_item_base_display_single_addon_hide',
+            [$this, 'shouldHideEducationalMenuItem'],
+            10,
+            2
+        );
+    }
+
+    /**
+     * @return array<mixed>
+     */
+    private function getFormData(): array
+    {
+        $formId = isset($_GET['form_id']) ? absint($_GET['form_id']) : 0;
+
+        if (!$formId) {
+            return [];
+        }
+
+        $formData = wpforms()->get('form')->get(
+            $formId,
+            [
+                'content_only' => true,
+            ]
+        );
+
+        return is_array($formData) ? $formData : [];
+    }
+
+    /**
+     * @param array<string> $paymentsAvailable List of available payment gateways.
+     * @return array<string>
+     */
+    public function registerPayment($paymentsAvailable): array
+    {
+
+        $paymentsAvailable[$this->slug] = $this->name;
+
+        return $paymentsAvailable;
+    }
+
+    /**
+     * @return void
+     */
+    public function builderOutput(): void
+    {
+        ?>
+        <div class="wpforms-panel-content-section wpforms-panel-content-section-<?php echo esc_attr($this->slug); ?>" id="<?php echo esc_attr($this->slug); ?>-provider" data-provider="<?php echo esc_attr($this->slug); ?>">
+
+            <div class="wpforms-panel-content-section-title">
+                <?php echo esc_html($this->name); ?>
+            </div>
+
+            <div class="wpforms-payment-settings wpforms-clear">
+                <?php $this->builderContent(); ?>
+            </div>
+        </div>
+        <?php
+    }
+
+    /**
+     * @return void
+     */
+    public function builderContent(): void
+    {
+        echo '<div id="wpforms-panel-content-section-payment-' . $this->slug . '">';
+
+        ?>
+        <div class="wpforms-panel-content-section-payment">
+            <h2 class="wpforms-panel-content-section-payment-subtitle">
+                <?php echo $this->name; ?>
+            </h2>
+            <?php
+                wpforms_panel_field(
+                    'toggle',
+                    $this->slug,
+                    'enable',
+                    $this->form_data,
+                    sprintf(
+                        esc_html__('Enable %s', 'wpforms-lite'),
+                        $this->name
+                    ),
+                    [
+                        'parent'  => 'payments',
+                        'default' => '0',
+                        'tooltip' => esc_html__('Allow your customers to cryptocurrency payments via the form.', 'wpforms-cryptopay'),
+                        'class'   => 'wpforms-panel-content-section-payment-toggle wpforms-panel-content-section-payment-toggle-' . $this->slug,
+                    ]
+                );
+            ?>
+        </div>
+        <?php
+
+        echo '</div>';
+    }
+
+    /**
+     * @return void
+     */
+    public function builderSidebar(): void
+    {
+        echo wpforms_render(
+            'builder/payment/sidebar',
+            [
+                'configured'  => 'configured',
+                'slug'        => $this->slug,
+                'icon'        => $this->icon,
+                'name'        => $this->name,
+                'recommended' => $this->recommended,
+            ],
+            true
+        );
+    }
+
+    /**
+     * @param bool         $hide  Whether to hide the menu item.
+     * @param array<mixed> $addon Addon data.
+     * @return bool
+     */
+    public function shouldHideEducationalMenuItem($hide, $addon): bool
+    {
+        return isset($addon['clear_slug']) && $this->slug === $addon['clear_slug'] ? true : $hide;
+    }
+}