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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
*/
use MediaWiki\Context\IContextSource;
use MediaWiki\Extension\Translate\MessageGroupProcessing\MessageGroups;
use MediaWiki\Extension\Translate\MessageLoading\MessageHandle;
use MediaWiki\Extension\Translate\Services;
use MediaWiki\MediaWikiServices;
use MediaWiki\Title\Title;
use Wikimedia\Rdbms\SelectQueryBuilder;
/**
* @since 2011-11-28
* @ingroup MessageGroup
*/
class RecentMessageGroup extends WikiMessageGroup {
/**
* Yes this is very ugly hack and should not be removed.
* @see \MediaWiki\Extension\Translate\MessageLoading\MessageCollection::getPages()
* @var int|false
*/
protected $namespace = false;
/** @var string */
protected $language;
/**
* These groups are always generated for one language. Method setLanguage
* must be called before calling getDefinitions.
*/
public function __construct() {
}
public function setLanguage( string $code ) {
$this->language = $code;
}
/** @inheritDoc */
public function getId() {
return '!recent';
}
/** @inheritDoc */
public function getLabel( ?IContextSource $context = null ) {
$msg = wfMessage( 'translate-dynagroup-recent-label' );
$msg = self::addContext( $msg, $context );
return $msg->plain();
}
/** @inheritDoc */
public function getDescription( ?IContextSource $context = null ) {
$msg = wfMessage( 'translate-dynagroup-recent-desc' );
$msg = self::addContext( $msg, $context );
return $msg->plain();
}
protected function getRCCutoff(): int {
$db = MediaWikiServices::getInstance()->getDBLoadBalancer()->getConnection( DB_REPLICA );
$max = $db->newSelectQueryBuilder()
->select( 'MAX(rc_id)' )
->from( 'recentchanges' )
->caller( __METHOD__ )
->fetchField();
return max( 0, $max - 50000 );
}
/**
* Allows subclasses to partially customize the query.
* @return array
*/
protected function getQueryConditions() {
global $wgTranslateMessageNamespaces;
$db = MediaWikiServices::getInstance()->getDBLoadBalancer()->getConnection( DB_REPLICA );
$conds = [
'rc_title ' . $db->buildLike( $db->anyString(), '/' . $this->language ),
'rc_namespace' => $wgTranslateMessageNamespaces,
'rc_type != ' . RC_LOG,
'rc_id > ' . $this->getRCCutoff(),
];
return $conds;
}
/**
* Filters out messages that should not be displayed here
* as they are not displayed in other places.
*
* @param MessageHandle $handle
* @return bool
*/
protected function matchingMessage( MessageHandle $handle ): bool {
return MessageGroups::isTranslatableMessage( $handle, $this->language );
}
/** @inheritDoc */
public function getDefinitions() {
if ( !$this->language ) {
throw new BadMethodCallException( 'Language not set' );
}
$db = MediaWikiServices::getInstance()->getDBLoadBalancer()->getConnection( DB_REPLICA );
$rcQuery = RecentChange::getQueryInfo();
$res = $db->newSelectQueryBuilder()
->select( [ 'rc_namespace', 'rc_title' ] )
->tables( $rcQuery['tables'] )
->where( $this->getQueryConditions() )
->orderBy( 'rc_id', SelectQueryBuilder::SORT_DESC )
->limit( 5000 )
->joinConds( $rcQuery['joins'] )
->caller( __METHOD__ )
->fetchResultSet();
$defs = [];
foreach ( $res as $row ) {
$title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
$handle = new MessageHandle( $title );
if ( !$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;
}
/** @inheritDoc */
public function getValidator() {
return null;
}
/**
* Subpage language code, if any in the title, is ignored.
* @param MessageHandle $handle
* @return null|string
*/
public function getMessageContent( MessageHandle $handle ) {
$groupId = Services::getInstance()->getMessageIndex()->getPrimaryGroupId( $handle );
if ( $groupId ) {
$group = MessageGroups::getGroup( $groupId );
if ( $group ) {
return $group->getMessage( $handle->getKey(), $group->getSourceLanguage() );
}
}
throw new InvalidArgumentException( 'Could not find group for ' . $handle->getKey() );
}
}