<?php
/**
 * Kunena Component
* @package Kunena.Installer
*
* @copyright (C) 2008 - 2013 Kunena Team. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @link http://www.kunena.org
**/
defined ( '_JEXEC' ) or die ();

class KunenaMigratorJoomlaboard {
	protected $versions = array (
		array('version' =>'1.0', 'date' => '0000-00-00', 'table' => 'sb_messages', 'column'=>'id'),
	);

	public static function getInstance() {
		static $instance = null;
		if(!$instance) $instance = new KunenaMigratorJoomlaboard();
		return $instance;
	}

	/**
	 * Detect JoomlaBoard version.
	 *
	 * @return  string  JoomlaBoard version or null.
	 */
	public function detect() {
		foreach ($this->versions as $version) {
			if (KunenaInstaller::getTableColumn($version['table'], $version['column'])) {
				return $version->version;
			}
		}

		return null;
	}
}