<?php
/*
* 2007-2011 PrestaShop 
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* 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.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2011 PrestaShop SA
*  @version  Release: $Revision: 6594 $
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

abstract class ModuleGraphEngineCore extends Module
{
	protected	$_type;

	public function __construct($type)
	{
		$this->_type = $type;
	}
	
	public function install()
	{
		if (!parent::install())
			return false;
		return Configuration::updateValue('PS_STATS_RENDER', $this->name);
	}

	public static function getGraphEngines()
	{
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->ExecuteS('
    	SELECT m.`name`
    	FROM `'._DB_PREFIX_.'module` m
    	LEFT JOIN `'._DB_PREFIX_.'hook_module` hm ON hm.`id_module` = m.`id_module`
    	LEFT JOIN `'._DB_PREFIX_.'hook` h ON hm.`id_hook` = h.`id_hook`
    	WHERE h.`name` = \'GraphEngine\'');
		
		$arrayEngines = array();
		foreach ($result AS $module)
    	{
			$instance = Module::getInstanceByName($module['name']);
			if (!$instance)
				continue;
			$arrayEngines[$module['name']] = array($instance->displayName, $instance->description);
		}
		
		return $arrayEngines;
	}
	
	abstract public function createValues($values);
	abstract public function setSize($width, $height);
	abstract public function setLegend($legend);
	abstract public function setTitles($titles);
	abstract public function draw();
}