<?php
/**
* @version		$Id: weblinks.php 7946 2007-07-14 01:52:32Z friesengeist $
* @package		Joomla
* @copyright	Copyright (C) 2005 - 2007 Open Source Matters. All rights reserved.
* @license		GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/

// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );

$mainframe->registerEvent( 'onSearch', 'plgSearchWeblinks' );
$mainframe->registerEvent( 'onSearchAreas', 'plgSearchWeblinksAreas' );
$lang =& JFactory::getLanguage();
$lang->load( 'plg_search_weblinks' );

/**
 * @return array An array of search areas
 */
function &plgSearchWeblinksAreas() {
	static $areas = array(
		'weblinks' => 'Weblinks'
	);
	return $areas;
}

/**
* Weblink Search method
*
* The sql must return the following fields that are used in a common display
* routine: href, title, section, created, text, browsernav
* @param string Target search string
* @param string mathcing option, exact|any|all
* @param string ordering option, newest|oldest|popular|alpha|category
 * @param mixed An array if the search it to be restricted to areas, null if search all
 */
function plgSearchWeblinks( $text, $phrase='', $ordering='', $areas=null )
{
	$db		=& JFactory::getDBO();
	$user	=& JFactory::getUser();

	if (is_array( $areas )) {
		if (!array_intersect( $areas, array_keys( plgSearchWeblinksAreas() ) )) {
			return array();
		}
	}

	// load plugin params info
 	$plugin =& JPluginHelper::getPlugin('search', 'weblinks');
 	$pluginParams = new JParameter( $plugin->params );

	$limit = $pluginParams->def( 'search_limit', 50 );

	$text = trim( $text );
	if ($text == '') {
		return array();
	}
	$section 	= JText::_( 'Web Links' );

	$wheres 	= array();
	switch ($phrase) {
		case 'exact':
			$text = $db->getEscaped($text);
			$wheres2 	= array();
			$wheres2[] 	= "LOWER(a.url) LIKE '%$text%'";
			$wheres2[] 	= "LOWER(a.description) LIKE '%$text%'";
			$wheres2[] 	= "LOWER(a.title) LIKE '%$text%'";
			$where 		= '(' . implode( ') OR (', $wheres2 ) . ')';
			break;

		case 'all':
		case 'any':
		default:
			$words 	= explode( ' ', $text );
			$wheres = array();
			foreach ($words as $word) {
				$word = $db->getEscaped($word);
				$wheres2 	= array();
				$wheres2[] 	= "LOWER(a.url) LIKE '%$word%'";
				$wheres2[] 	= "LOWER(a.description) LIKE '%$word%'";
				$wheres2[] 	= "LOWER(a.title) LIKE '%$word%'";
				$wheres[] 	= implode( ' OR ', $wheres2 );
			}
			$where 	= '(' . implode( ($phrase == 'all' ? ') AND (' : ') OR ('), $wheres ) . ')';
			break;
	}

	switch ( $ordering ) {
		case 'oldest':
			$order = 'a.date ASC';
			break;

		case 'popular':
			$order = 'a.hits DESC';
			break;

		case 'alpha':
			$order = 'a.title ASC';
			break;

		case 'category':
			$order = 'b.title ASC, a.title ASC';
			break;

		case 'newest':
		default:
			$order = 'a.date DESC';
	}

	$query = 'SELECT a.title AS title,'
	. ' a.description AS text,'
	. ' a.date AS created,'
	. ' CONCAT_WS( " / ", '.$db->Quote($section).', b.title ) AS section,'
	. ' "1" AS browsernav,'
	. ' CONCAT("index.php?option=com_weblinks&view=weblink&id=", a.id ) AS href'
	. ' FROM #__weblinks AS a'
	. ' INNER JOIN #__categories AS b ON b.id = a.catid'
	. ' WHERE ('. $where .')'
	. ' AND a.published = 1'
	. ' AND b.published = 1'
	. ' AND b.access <= '.(int) $user->get( 'aid' )
	. ' ORDER BY '. $order
	;
	$db->setQuery( $query, 0, $limit );
	$rows = $db->loadObjectList();

	return $rows;
}
?>
