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plugins/system/updatenotification/postinstall/updatecachetime.php

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+<?php
+
+/**
+ * @package     Joomla.Plugin
+ * @subpackage  System.updatenotification
+ *
+ * @copyright   (C) 2016 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+use Joomla\CMS\Component\ComponentHelper;
+use Joomla\CMS\Factory;
+use Joomla\CMS\Plugin\PluginHelper;
+use Joomla\CMS\Table\Table;
+
+// phpcs:disable PSR1.Files.SideEffects
+\defined('_JEXEC') or die;
+// phpcs:enable PSR1.Files.SideEffects
+
+/**
+ * Checks if the com_installer config for the cache Hours are eq 0 and the updatenotification Plugin is enabled
+ *
+ * @return  boolean
+ *
+ * @since   3.6.3
+ */
+function updatecachetime_postinstall_condition()
+{
+    $cacheTimeout = (int) ComponentHelper::getComponent('com_installer')->params->get('cachetimeout', 6);
+
+    // Check if cachetimeout is eq zero
+    if ($cacheTimeout === 0 && PluginHelper::isEnabled('system', 'updatenotification')) {
+        return true;
+    }
+
+    return false;
+}
+
+/**
+ * Sets the cachetimeout back to the default (6 hours)
+ *
+ * @return  void
+ *
+ * @since   3.6.3
+ */
+function updatecachetime_postinstall_action()
+{
+    $installer = ComponentHelper::getComponent('com_installer');
+
+    // Sets the cachetimeout back to the default (6 hours)
+    $installer->params->set('cachetimeout', 6);
+
+    // Save the new parameters back to com_installer
+    $table = Table::getInstance('extension');
+    $table->load($installer->id);
+    $table->bind(['params' => $installer->params->toString()]);
+
+    // Store the changes
+    if (!$table->store()) {
+        // If there is an error show it to the admin
+        Factory::getApplication()->enqueueMessage($table->getError(), 'error');
+    }
+}