DynamicPageList3/classes/db/CreateTemplateUpdateMaintenance.php

<?php
/**
 * DynamicPageList3
 * CreateTemplateUpdateMaintenance
 *
 * @license		GPL-2.0-or-later
 * @package		DynamicPageList3
 *
 **/

namespace DPL\DB;

use LoggedUpdateMaintenance;
use Title;
use WikiPage;
use ContentHandler;


$IP = getenv( 'MW_INSTALL_PATH' );
if ( $IP === false ) {
	$IP = __DIR__ . '/../../../..';
}
require_once "$IP/maintenance/Maintenance.php";

/*
 * Creates the DPL template when updating.
 */
class CreateTemplateUpdateMaintenance extends LoggedUpdateMaintenance {
	/**
	 * Handle inserting DPL's necessary template for content inclusion.
	 *
	 * @access	protected
	 * @return	void
	 */
	protected function doDBUpdates() {
		//Make sure page "Template:Extension DPL" exists
		$title = Title::newFromText('Template:Extension DPL');

		if (!$title->exists()) {
			$page = WikiPage::factory($title);
			$pageContent = ContentHandler::makeContent("<noinclude>This page was automatically created.  It serves as an anchor page for all '''[[Special:WhatLinksHere/Template:Extension_DPL|invocations]]''' of [http://mediawiki.org/wiki/Extension:DynamicPageList Extension:DynamicPageList (DPL)].</noinclude>", $title);
			$page->doEditContent(
				$pageContent,
				$title,
				EDIT_NEW | EDIT_FORCE_BOT
			);
		}
	}

	/**
	 * Get the unique update key for this logged update.
	 *
	 * @access	protected
	 * @return	string	Unique Key
	 */
	protected function getUpdateKey() {
		return 'dynamic-page-list-create-template';
	}
}

$maintClass = CreateTemplateUpdateMaintenance::class;
require_once RUN_MAINTENANCE_IF_MAIN;