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<?php
/**
* JComments - Joomla Comment System
*
* @version 3.0
* @package JComments
* @author Sergey M. Litvinov (smart@joomlatune.ru)
* @copyright (C) 2006-2013 by Sergey M. Litvinov (http://www.joomlatune.ru)
* @license GNU/GPL: http://www.gnu.org/copyleft/gpl.html
*/
defined('_JEXEC') or die;
require_once (JCOMMENTS_MODELS.'/object.php');
require_once (JCOMMENTS_CLASSES.'/objectinfo.php');
/**
* JComments objects frontend helper
*/
class JCommentsObjectHelper
{
/**
* Returns title for given object
*
* @param int $object_id
* @param string $object_group
* @param string $language
* @return string
*/
public static function getTitle( $object_id, $object_group = 'com_content', $language = null )
{
$info = self::getObjectInfo($object_id, $object_group, $language);
return $info->title;
}
/**
* Returns URI for given object
*
* @param int $object_id
* @param string $object_group
* @param string $language
* @return string
*/
public static function getLink( $object_id, $object_group = 'com_content', $language = null )
{
$info = self::getObjectInfo($object_id, $object_group, $language);
return $info->link;
}
/**
* Returns identifier of user who is owner of an object
*
* @param int $object_id
* @param string $object_group
* @param string $language
* @return string
*/
public static function getOwner( $object_id, $object_group = 'com_content', $language = null )
{
$info = self::getObjectInfo($object_id, $object_group, $language);
return $info->userid;
}
protected static function _call($class, $methodName, $args = array())
{
if (!is_callable(array($class, $methodName))) {
$class = new JCommentsPlugin;
}
return call_user_func_array(array($class, $methodName), $args);
}
protected static function _loadObjectInfo($object_id, $object_group = 'com_content', $language = null)
{
static $plugins = array();
$object_group = JCommentsSecurity::clearObjectGroup($object_group);
// get object information via plugins
if (!isset($plugins[$object_group])) {
ob_start();
include_once (JCOMMENTS_SITE.'/plugins/'.$object_group.'.plugin.php');
ob_end_clean();
$className = 'jc_' . $object_group;
if (class_exists($className)) {
$plugins[$object_group] = $className;
} else {
$plugins[$object_group] = 'JCommentsPlugin';
}
}
$className = $plugins[$object_group];
$class = new $className;
if (is_callable(array($class, 'getObjectInfo'))) {
// retrieve object information via getObjectInfo plugin's method
$info = self::_call($class, 'getObjectInfo', array($object_id, $language));
} else {
// retrieve object information via separate plugin's methods (old plugins)
$info = new JCommentsObjectInfo();
$info->title = self::_call($class, 'getObjectTitle', array($object_id, $language));
$info->link = self::_call($class, 'getObjectLink', array($object_id, $language));
$info->userid = self::_call($class, 'getObjectOwner', array($object_id, $language));
}
$info->lang = $language;
$info->object_id = $object_id;
$info->object_group = $object_group;
return $info;
}
public static function fetchObjectInfo($object_id, $object_group = 'com_content', $language = null)
{
$object = JCommentsModelObject::getObjectInfo($object_id, $object_group, $language);
if ($object !== false) {
// use object information stored in database
$info = new JCommentsObjectInfo($object);
} else {
// get object information via plugins
$info = self::_loadObjectInfo($object_id, $object_group, $language);
if (!JCommentsModelObject::IsEmpty($info)) {
$app = JFactory::getApplication();
if (!$app->isAdmin()) {
// insert object information
JCommentsModelObject::setObjectInfo(0, $info);
}
}
}
return $info;
}
/**
* Returns object information
*
* @param int $object_id
* @param string $object_group
* @param string $language
* @param boolean $useCache
* @return JCommentsObjectInfo
*/
public static function getObjectInfo($object_id, $object_group = 'com_content', $language = null, $useCache = true)
{
static $info = array();
if (empty($language)) {
$language = JCommentsMultilingual::getLanguage();
}
$key = md5($object_group.'_'.$object_id.'_'.($language ? $language : ''));
if (!isset($info[$key])) {
if ($useCache) {
$cache = JFactory::getCache('com_jcomments_objects_'.strtolower($object_group), 'callback');
$info[$key] = $cache->get(array('JCommentsObjectHelper', 'fetchObjectInfo'), array($object_id, $object_group, $language));
} else {
$info[$key] = self::fetchObjectInfo($object_id, $object_group, $language);
}
}
return $info[$key];
}
/**
* Stores object information (inserts new or updates existing)
*
* @param int $object_id
* @param string $object_group
* @param string $language
* @param boolean $cleanCache
* @param boolean $allowEmpty
* @return JCommentsObjectInfo
*/
public static function storeObjectInfo($object_id, $object_group = 'com_content', $language = null, $cleanCache = false, $allowEmpty = false)
{
if (empty($language)) {
$language = JCommentsMultilingual::getLanguage();
}
$app = JFactory::getApplication();
// try to load object information from database
$object = JCommentsModelObject::getObjectInfo($object_id, $object_group, $language);
$objectId = $object === false ? 0 : $object->id;
if ($objectId == 0 && $app->isAdmin()) {
// return empty object because we can not create link in backend
return new JCommentsObjectInfo();
}
// get object information via plugins
$info = self::_loadObjectInfo($object_id, $object_group, $language);
if (!JCommentsModelObject::IsEmpty($info) || $allowEmpty) {
if ($app->isAdmin()) {
// we do not have to update object's link from backend
$info->link = null;
}
// insert/update object information
JCommentsModelObject::setObjectInfo($objectId, $info);
if ($cleanCache) {
// clean cache for given object group
$cache = JFactory::getCache('com_jcomments_objects_'.strtolower($object_group));
$cache->clean();
}
}
return $info;
}
}