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modules/psxmarketingwithgoogle/classes/Buffer/TemplateBuffer.php

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+<?php
+/**
+ * Copyright since 2007 PrestaShop SA and Contributors
+ * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Academic Free License version 3.0
+ * that is bundled with this package in the file LICENSE.md.
+ * It is also available through the world-wide-web at this URL:
+ * https://opensource.org/licenses/AFL-3.0
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@prestashop.com so we can send you a copy immediately.
+ *
+ * @author    PrestaShop SA and Contributors <contact@prestashop.com>
+ * @copyright Since 2007 PrestaShop SA and Contributors
+ * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License version 3.0
+ */
+
+namespace PrestaShop\Module\PsxMarketingWithGoogle\Buffer;
+
+use Symfony\Component\HttpFoundation\Session\Session;
+use Symfony\Component\HttpFoundation\Session\Storage\MockFileSessionStorage;
+
+class TemplateBuffer
+{
+    /**
+     * @var Session
+     */
+    private $session;
+
+    /**
+     * @param string $userId
+     */
+    public function init($userId)
+    {
+        $this->session = new Session(
+            new MockFileSessionStorage(
+                \_PS_CACHE_DIR_ . '/psxmarketingwithgoogle_sessions',
+                'conversionaction'
+            )
+        );
+        $this->session->setId($userId);
+        $this->session->start();
+        register_shutdown_function([$this, 'save']);
+    }
+
+    /**
+     * add data to the buffer
+     *
+     * @param string $data
+     *
+     * @return void
+     */
+    public function add($data)
+    {
+        $this->session->getFlashBag()->add('gtag_events', $data);
+    }
+
+    /**
+     * return buffer content and reset it
+     *
+     * @return string
+     */
+    public function flush(): string
+    {
+        $data = '';
+        foreach ($this->session->getFlashBag()->get('gtag_events', []) as $message) {
+            $data .= $message;
+        }
+
+        return $data;
+    }
+
+    public function save(): void
+    {
+        $this->session->save();
+    }
+}