<?php
/**
 * @version		$Id: links.php 20267 2011-01-11 03:44:44Z eddieajau $
 * @package		Joomla.Administrator
 * @subpackage	com_redirect
 * @copyright	Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license		GNU General Public License version 2 or later; see LICENSE.txt
 */

// No direct access.
defined('_JEXEC') or die;

jimport('joomla.application.component.modellist');

/**
 * Methods supporting a list of redirect links.
 *
 * @package		Joomla.Administrator
 * @subpackage	com_redirect
 * @since		1.6
 */
class RedirectModelLinks extends JModelList
{
	/**
	 * Constructor.
	 *
	 * @param	array	An optional associative array of configuration settings.
	 * @see		JController
	 * @since	1.6
	 */
	public function __construct($config = array())
	{
		if (empty($config['filter_fields'])) {
			$config['filter_fields'] = array(
				'id', 'a.id',
				'old_url', 'a.old_url',
				'new_url', 'a.new_url',
				'referer', 'a.referer',
				'created_date', 'a.created_date',
				'published', 'a.published',
			);
		}

		parent::__construct($config);
	}

	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @since	1.6
	 */
	protected function populateState($ordering = null, $direction = null)
	{
		// Initialise variables.
		$app = JFactory::getApplication('administrator');

		// Load the filter state.
		$search = $this->getUserStateFromRequest($this->context.'.filter.search', 'filter_search');
		$this->setState('filter.search', $search);

		$state = $this->getUserStateFromRequest($this->context.'.filter.state', 'filter_state', '', 'string');
		$this->setState('filter.state', $state);

		// Load the parameters.
		$params = JComponentHelper::getParams('com_redirect');
		$this->setState('params', $params);

		// List state information.
		parent::populateState('a.old_url', 'asc');
	}

	/**
	 * Method to get a store id based on model configuration state.
	 *
	 * This is necessary because the model is used by the component and
	 * different modules that might need different sets of data or different
	 * ordering requirements.
	 *
	 * @param	string	A prefix for the store id.
	 *
	 * @return	string	A store id.
	 * @since	1.6
	 */
	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id	.= ':'.$this->getState('filter.search');
		$id	.= ':'.$this->getState('filter.state');

		return parent::getStoreId($id);
	}

	/**
	 * Build an SQL query to load the list data.
	 *
	 * @return	JDatabaseQuery
	 * @since	1.6
	 */
	protected function getListQuery()
	{
		// Create a new query object.
		$db		= $this->getDbo();
		$query	= $db->getQuery(true);

		// Select the required fields from the table.
		$query->select(
			$this->getState(
				'list.select',
				'a.*'
			)
		);
		$query->from('`#__redirect_links` AS a');

		// Filter by published state
		$state = $this->getState('filter.state');
		if (is_numeric($state)) {
			$query->where('a.published = '.(int) $state);
		} else if ($state === '') {
			$query->where('(a.published IN (0,1,2))');
		}

		// Filter the items over the search string if set.
		$search = $this->getState('filter.search');
		if (!empty($search)) {
			if (stripos($search, 'id:') === 0) {
				$query->where('a.id = '.(int) substr($search, 3));
			} else {
				$search = $db->Quote('%'.$db->getEscaped($search, true).'%');
				$query->where(
					'(`old_url` LIKE '.$search .
					' OR `new_url` LIKE '.$search .
					' OR `comment` LIKE '.$search .
					' OR `referer` LIKE '.$search.')'
				);
			}
		}

		// Add the list ordering clause.
		$query->order($db->getEscaped($this->getState('list.ordering', 'a.old_url')).' '.$db->getEscaped($this->getState('list.direction', 'ASC')));

		//echo nl2br(str_replace('#__','jos_',$query));
		return $query;
	}
}