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<?php
/**
* This file contains an unmanaged message group implementation.
*
* @file
* @author Niklas Laxström
* @author Siebrand Mazeland
* @copyright Copyright © 2008-2013, Niklas Laxström, Siebrand Mazeland
* @license GPL-2.0-or-later
*/
/**
* @since 2011-11-28
* @ingroup MessageGroup
*/
class RecentMessageGroup extends WikiMessageGroup {
/*
* Yes this is very ugly hack and should not be removed.
* @see MessageCollection::getPages()
*/
protected $namespace = false;
protected $language;
/**
* These groups are always generated for one language. Method setLanguage
* must be called before calling getDefinitions.
*/
public function __construct() {
}
public function setLanguage( $code ) {
$this->language = $code;
}
public function getId() {
return '!recent';
}
public function getLabel( IContextSource $context = null ) {
$msg = wfMessage( 'translate-dynagroup-recent-label' );
$msg = self::addContext( $msg, $context );
return $msg->plain();
}
public function getDescription( IContextSource $context = null ) {
$msg = wfMessage( 'translate-dynagroup-recent-desc' );
$msg = self::addContext( $msg, $context );
return $msg->plain();
}
protected function getRCCutoff() {
$db = wfGetDB( DB_REPLICA );
$tables = 'recentchanges';
$max = $db->selectField( $tables, 'MAX(rc_id)', [], __METHOD__ );
return max( 0, $max - 50000 );
}
/**
* Allows subclasses to partially customize the query.
* @return array
*/
protected function getQueryConditions() {
global $wgTranslateMessageNamespaces;
$db = wfGetDB( DB_REPLICA );
$conds = [
'rc_title ' . $db->buildLike( $db->anyString(), '/' . $this->language ),
'rc_namespace' => $wgTranslateMessageNamespaces,
'rc_type != ' . RC_LOG,
'rc_id > ' . $this->getRCCutoff(),
];
return $conds;
}
/**
* Allows subclasses to filter out more unwanted messages.
*
* @param MessageHandle $msg
* @return bool
*/
protected function matchingMessage( MessageHandle $msg ) {
return true;
}
public function getDefinitions() {
if ( !$this->language ) {
throw new MWException( 'Language not set' );
}
$db = wfGetDB( DB_REPLICA );
if ( is_callable( RecentChange::class, 'getQueryInfo' ) ) {
$rcQuery = RecentChange::getQueryInfo();
$tables = $rcQuery['tables'];
$joins = $rcQuery['joins'];
} else {
$tables = 'recentchanges';
$joins = [];
}
$fields = [ 'rc_namespace', 'rc_title' ];
$conds = $this->getQueryConditions();
$options = [
'ORDER BY' => 'rc_id DESC',
'LIMIT' => 5000
];
$res = $db->select( $tables, $fields, $conds, __METHOD__, $options, $joins );
$groupIdsPreload = [];
foreach ( $res as $row ) {
$title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
$handle = new MessageHandle( $title );
if ( $handle->isValid() ) {
$groupIdsPreload[] = $handle->getGroup()->getId();
}
}
TranslateMetadata::preloadGroups( $groupIdsPreload );
$defs = [];
foreach ( $res as $row ) {
$title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
$handle = new MessageHandle( $title );
if ( !$handle->isValid() || !$this->matchingMessage( $handle ) ) {
continue;
}
$messageKey = $handle->getKey();
$fullKey = $row->rc_namespace . ':' . $messageKey;
/* Note: due to bugs, getMessage might return null even for
* known messages. These negatives are not cached, but that
* should be rare enough case to not affect performance. */
if ( !isset( $defs[$fullKey] ) ) {
$group = $handle->getGroup();
$msg = $group->getMessage( $messageKey, $group->getSourceLanguage() );
if ( $msg !== null ) {
$defs[$fullKey] = $msg;
}
}
}
return $defs;
}
public function getChecker() {
return null;
}
/**
* Subpage language code, if any in the title, is ignored.
* @param MessageHandle $handle
* @return null|string
* @throws MWException
*/
public function getMessageContent( MessageHandle $handle ) {
$groupId = MessageIndex::getPrimaryGroupId( $handle );
$group = MessageGroups::getGroup( $groupId );
if ( $group ) {
return $group->getMessage( $handle->getKey(), $group->getSourceLanguage() );
}
throw new MWException( 'Could not find group for ' . $handle->getKey() );
}
}
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