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<?php
/**
* Kunena Component
* @package Kunena.Framework
* @subpackage Forum.Message
*
* @copyright (C) 2008 - 2014 Kunena Team. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @link http://www.kunena.org
**/
defined ( '_JEXEC' ) or die ();
/**
* Kunena Forum Message Helper Class
*/
abstract class KunenaForumMessageHelper {
/**
* @var KunenaForumMessage[]
*/
protected static $_instances = array();
protected static $_location = array();
/**
* Returns KunenaForumMessage object.
*
* @param null $identifier The message to load - Can be only an integer.
* @param bool $reload
*
* @return KunenaForumMessage The message object.
*/
static public function get($identifier = null, $reload = false) {
if ($identifier instanceof KunenaForumMessage) {
return $identifier;
}
$id = intval ( $identifier );
if ($id < 1)
return new KunenaForumMessage ();
if (empty ( self::$_instances [$id] )) {
self::$_instances [$id] = new KunenaForumMessage ( array('id'=>$id) );
self::$_instances [$id]->load();
} elseif ($reload) {
self::$_instances [$id]->load();
}
return self::$_instances [$id];
}
/**
* @param bool|array|int $ids
* @param string $authorise
*
* @return KunenaForumTopic[]
*/
static public function getMessages($ids = false, $authorise='read') {
if ($ids === false) {
return self::$_instances;
} elseif (is_array ($ids) ) {
$ids = array_unique($ids);
} else {
$ids = array($ids);
}
self::loadMessages($ids);
$list = array ();
foreach ( $ids as $id ) {
// TODO: authorisation needs topics to be loaded, make sure that they are! (performance increase)
if (!empty(self::$_instances [$id]) && self::$_instances [$id]->authorise($authorise, null, true)) {
$list [$id] = self::$_instances [$id];
}
}
return $list;
}
/**
* @param mixed $topic
* @param int $start
* @param int $limit
* @param string $ordering
* @param int $hold
* @param bool $orderbyid
*
* @return KunenaForumTopic[]
*/
static public function getMessagesByTopic($topic, $start=0, $limit=0, $ordering='ASC', $hold=0, $orderbyid = false) {
$topic = KunenaForumTopicHelper::get($topic);
if (!$topic->exists())
return array();
$total = $topic->getTotal();
if ($start < 0)
$start = 0;
if ($limit < 1)
$limit = KunenaFactory::getConfig()->messages_per_page;
// If out of range, use last page
if ($total < $start)
$start = intval($total / $limit) * $limit;
$ordering = strtoupper($ordering);
if ($ordering != 'DESC')
$ordering = 'ASC';
return self::loadMessagesByTopic($topic->id, $start, $limit, $ordering, $hold, $orderbyid);
}
/**
* @param bool|array|int $categories
* @param int $limitstart
* @param int $limit
* @param array $params
*
* @return array
*/
static public function getLatestMessages($categories=false, $limitstart=0, $limit=0, $params=array()) {
$reverse = isset($params['reverse']) ? (int) $params['reverse'] : 0;
$orderby = isset($params['orderby']) ? (string) $params['orderby'] : 'm.time DESC';
$starttime = isset($params['starttime']) ? (int) $params['starttime'] : 0;
$mode = isset($params['mode']) ? $params['mode'] : 'recent';
$user = isset($params['user']) ? $params['user'] : false;
$where = isset($params['where']) ? (string) $params['where'] : '';
$childforums = isset($params['childforums']) ? (bool) $params['childforums'] : false;
$db = JFactory::getDBO();
// FIXME: use right config setting
if ($limit < 1 && empty($params['nolimit'])) $limit = KunenaFactory::getConfig ()->threads_per_page;
$query = $db->getQuery(true);
$query->select('m.*, t.message')
->from('#__kunena_messages AS m')
->innerJoin('#__kunena_messages_text AS t ON m.id = t.mesid')
->where('m.moved=0') // TODO: remove column
->order($orderby);
$authorise = 'read';
$hold = 'm.hold=0';
$userfield = 'm.userid';
switch ($mode) {
case 'unapproved':
$authorise = 'approve';
$hold = "m.hold=1";
break;
case 'deleted':
$authorise = 'undelete';
$hold = "m.hold>=2";
break;
case 'mythanks':
$userfield = 'th.userid';
$query->innerJoin('#__kunena_thankyou AS th ON m.id = th.postid');
break;
case 'thankyou':
$userfield = 'th.targetuserid';
$query->innerJoin('#__kunena_thankyou AS th ON m.id = th.postid');
break;
case 'recent':
default:
}
if (is_array($categories) && in_array(0, $categories)) {
$categories = false;
}
$categories = KunenaForumCategoryHelper::getCategories($categories, $reverse, 'topic.'.$authorise);
if ($childforums) {
$categories += KunenaForumCategoryHelper::getChildren($categories, -1, array('action'=>'topic.'.$authorise));
}
$catlist = array();
foreach ($categories as $category) {
$catlist += $category->getChannels();
}
if (empty($catlist)) return array(0, array());
$allowed = implode(',', array_keys($catlist));
$query->where("m.catid IN ({$allowed})");
$query->where($hold);
if ($user) {
$query->where("{$userfield}={$db->Quote($user)}");
}
// Negative time means no time
if ($starttime == 0) {
$starttime = KunenaFactory::getSession ()->lasttime;
} elseif ($starttime > 0) {
$starttime = JFactory::getDate ()->toUnix () - ($starttime * 3600);
}
if ($starttime > 0) {
$query->where("m.time>{$db->Quote($starttime)}");
}
if ($where) {
$query->where($where);
}
$cquery = clone $query;
$cquery->clear('select')->clear('order')->select('COUNT(*)');
$db->setQuery ( $cquery );
$total = ( int ) $db->loadResult ();
if (KunenaError::checkDatabaseError() || !$total) return array(0, array());
// If out of range, use last page
if ($limit && $total < $limitstart)
$limitstart = intval($total / $limit) * $limit;
$db->setQuery ( $query, $limitstart, $limit );
$results = $db->loadAssocList ();
if (KunenaError::checkDatabaseError()) return array(0, array());
$messages = array();
foreach ( $results as $result ) {
$instance = new KunenaForumMessage ($result);
$instance->exists(true);
self::$_instances [$instance->id] = $instance;
$messages[$instance->id] = $instance;
}
unset ($results);
return array($total, $messages);
}
/**
* @param int $mesid
* @param null|string $direction
* @param null|array $hold
*
* @return int
*/
public static function getLocation($mesid, $direction = null, $hold = null) {
if (is_null($direction)) $direction = KunenaUserHelper::getMyself()->getMessageOrdering();
if (!$hold) {
$me = KunenaUserHelper::getMyself();
$mes_instance = KunenaForumMessageHelper::get($mesid);
$hold = KunenaAccess::getInstance()->getAllowedHold($me->userid, $mes_instance->catid, false);
}
if (!isset(self::$_location [$mesid])) {
self::loadLocation(array($mesid));
}
$location = self::$_location [$mesid];
$count = 0;
foreach ($location->hold as $meshold=>$values) {
if (isset($hold[$meshold])) {
$count += $values[$direction == 'asc' ? 'before' : 'after'];
if ($direction == 'both') $count += $values['before'];
}
}
return $count;
}
/**
* @param array|string $mesids
*/
public static function loadLocation($mesids) {
// NOTE: if you already know the location using this code just takes resources
if (!is_array($mesids)) $mesids = explode ( ',', $mesids );
$ids = array();
foreach ($mesids as $id) {
if ($id instanceof KunenaForumMessage) {
$id = $id->id;
} else {
$id = (int) $id;
}
if (!isset(self::$_location [$id])) {
$ids[$id] = $id;
self::$_location [$id] = new stdClass();
self::$_location [$id]->hold = array('before'=>0, 'after'=>0);
}
}
if (empty($ids))
return;
$idlist = implode ( ',', $ids );
$db = JFactory::getDBO ();
$db->setQuery ( "SELECT m.id, mm.hold, m.catid AS category_id, m.thread AS topic_id,
SUM(mm.time<m.time) AS before_count,
SUM(mm.time>m.time) AS after_count
FROM #__kunena_messages AS m
INNER JOIN #__kunena_messages AS mm ON m.thread=mm.thread
WHERE m.id IN ({$idlist})
GROUP BY m.id, mm.hold" );
$results = (array) $db->loadObjectList ();
KunenaError::checkDatabaseError();
foreach ($results as $result) {
$instance = self::$_location [$result->id];
if (!isset($instance->id)) {
$instance->id = $result->id;
$instance->category_id = $result->category_id;
$instance->topic_id = $result->topic_id;
self::$_location [$instance->id] = $instance;
}
$instance->hold[$result->hold] = array('before'=>$result->before_count, 'after'=>$result->after_count);
}
}
/**
* Free up memory by cleaning up all cached items.
*/
public static function cleanup() {
self::$_instances = array();
self::$_location = array();
}
/**
* @param bool|array|int $topicids
*
* @return bool|int
*/
public static function recount($topicids=false) {
$db = JFactory::getDBO ();
if (is_array($topicids)) {
$where = 'WHERE m.thread IN ('.implode(',', $topicids).')';
} elseif ((int)$topicids) {
$where = 'WHERE m.thread='.(int)$topicids;
} else {
$where = '';
}
// Update catid in all messages
$query ="UPDATE #__kunena_messages AS m
INNER JOIN #__kunena_topics AS tt ON tt.id=m.thread
SET m.catid=tt.category_id {$where}";
$db->setQuery($query);
$db->query ();
if (KunenaError::checkDatabaseError ())
return false;
return $db->getAffectedRows ();
}
// Internal functions
/**
* @param array $ids
*/
static protected function loadMessages(array $ids) {
foreach ($ids as $i=>$id) {
$id = intval($id);
if (!$id || isset(self::$_instances [$id]))
unset($ids[$i]);
}
if (empty($ids))
return;
$idlist = implode(',', $ids);
$db = JFactory::getDBO ();
$query = "SELECT m.*, t.message FROM #__kunena_messages AS m INNER JOIN #__kunena_messages_text AS t ON m.id=t.mesid WHERE m.id IN ({$idlist})";
$db->setQuery ( $query );
$results = (array) $db->loadAssocList ('id');
KunenaError::checkDatabaseError ();
foreach ( $ids as $id ) {
if (isset($results[$id])) {
$instance = new KunenaForumMessage ($results[$id]);
$instance->exists(true);
self::$_instances [$id] = $instance;
} else {
self::$_instances [$id] = null;
}
}
unset ($results);
}
/**
* @param int $topic_id
* @param int $start
* @param int $limit
* @param string $ordering
* @param int $hold
* @param bool $orderbyid
*
* @return array
*/
static protected function loadMessagesByTopic($topic_id, $start=0, $limit=0, $ordering='ASC', $hold=0, $orderbyid = false) {
$db = JFactory::getDBO ();
$query = "SELECT m.*, t.message
FROM #__kunena_messages AS m
INNER JOIN #__kunena_messages_text AS t ON m.id=t.mesid
WHERE m.thread={$db->quote($topic_id)} AND m.hold IN ({$hold}) ORDER BY m.time {$ordering}";
$db->setQuery ( $query, $start, $limit );
$results = (array) $db->loadAssocList ('id');
KunenaError::checkDatabaseError ();
$location = ($orderbyid || $ordering == 'ASC') ? $start : KunenaForumTopicHelper::get($topic_id)->getTotal($hold) - $start - 1;
$order = ($ordering == 'ASC') ? 1 : -1;
$list = array();
foreach ( $results as $id=>$result ) {
$instance = new KunenaForumMessage ($result);
$instance->exists(true);
self::$_instances [$id] = $instance;
$list[$orderbyid ? $id : $location] = $instance;
$location += $order;
}
unset ($results);
return $list;
}
}