Add hook to give ability to add scripts into return controller

mollie.php

@@ -1314,6 +1314,17 @@ public function hookActionFrontControllerInitAfter(): void
         $this->frontControllerAfterInit();
     }
 
+    /**
+     * Hook used for displaying the return page top where the customer is redirected after payment
+     * Used if content like Google Analytics is being used.
+     *
+     * @return string
+     */
+    public function hookDisplayMollieReturnPageTop(): string
+    {
+        return '';
+    }
+
     private function frontControllerAfterInit(): void
     {
         if (!$this->context->controller instanceof OrderControllerCore) {

src/Install/Installer.php

@@ -172,6 +172,7 @@ public static function getHooks()
             'displayProductAdditionalInfo',
             'displayCustomerAccount',
             'actionCarrierUpdate',
+            'displayMollieReturnPageTop',
         ];
     }
 

upgrade/Upgrade-6.2.2.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Mollie       https://www.mollie.nl
+ *
+ * @author      Mollie B.V. <info@mollie.nl>
+ * @copyright   Mollie B.V.
+ * @license     https://github.com/mollie/PrestaShop/blob/master/LICENSE.md
+ *
+ * @see        https://github.com/mollie/PrestaShop
+ */
+
+use Mollie\Adapter\ConfigurationAdapter;
+use Mollie\Config\Config;
+
+if (!defined('_PS_VERSION_')) {
+    exit;
+}
+
+function upgrade_module_6_2_2(Mollie $module): bool
+{
+    return $module->registerHook('displayMollieReturnPageTop');
+}

views/templates/front/mollie_return.tpl

@@ -8,6 +8,9 @@
  * @see        https://github.com/mollie/PrestaShop
  * @codingStandardsIgnoreStart
  *}
+
+{hook h='displayMollieReturnPageTop'}
+
 <h2>{l s='Welcome back' mod='mollie'}</h2>
 <p>{$msg_details|escape:'htmlall':'UTF-8'}</p>
 <a class="btn btn-default" href="{$link->getPageLink('index', true)|escape:'htmlall':'UTF-8'}">