ActiveUsersPager.php

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<?php
class ActiveUsersPager extends UsersPager {

    protected $opts;

    protected $groups;

    private $blockStatusByUid;

    public function __construct( IContextSource $context = null, FormOptions $opts ) {
        parent::__construct( $context );

        $this->RCMaxAge = $this->getConfig()->get( 'ActiveUserDays' );
        $this->requestedUser = '';

        $un = $opts->getValue( 'username' );
        if ( $un != '' ) {
            $username = Title::makeTitleSafe( NS_USER, $un );
            if ( !is_null( $username ) ) {
                $this->requestedUser = $username->getText();
            }
        }

        $this->groups = $opts->getValue( 'groups' );
        $this->excludegroups = $opts->getValue( 'excludegroups' );
        // Backwards-compatibility with old URLs
        if ( $opts->getValue( 'hidebots' ) ) {
            $this->excludegroups[] = 'bot';
        }
        if ( $opts->getValue( 'hidesysops' ) ) {
            $this->excludegroups[] = 'sysop';
        }
    }

    function getIndexField() {
        return 'qcc_title';
    }

    function getQueryInfo( $data = null ) {
        $dbr = $this->getDatabase();

        $useActor = (bool)(
            $this->getConfig()->get( 'ActorTableSchemaMigrationStage' ) & SCHEMA_COMPAT_READ_NEW
        );

        $activeUserSeconds = $this->getConfig()->get( 'ActiveUserDays' ) * 86400;
        $timestamp = $dbr->timestamp( wfTimestamp( TS_UNIX ) - $activeUserSeconds );
        $fname = __METHOD__ . ' (' . $this->getSqlComment() . ')';

        // Inner subselect to pull the active users out of querycachetwo
        $tables = [ 'querycachetwo', 'user' ];
        $fields = [ 'qcc_title', 'user_id' ];
        $jconds = [
            'user' => [ 'JOIN', 'user_name = qcc_title' ],
        ];
        $conds = [
            'qcc_type' => 'activeusers',
            'qcc_namespace' => NS_USER,
        ];
        $options = [];
        if ( $data !== null ) {
            $options['ORDER BY'] = 'qcc_title ' . $data['order'];
            $options['LIMIT'] = $data['limit'];
            $conds = array_merge( $conds, $data['conds'] );
        }
        if ( $this->requestedUser != '' ) {
            $conds[] = 'qcc_title >= ' . $dbr->addQuotes( $this->requestedUser );
        }
        if ( $this->groups !== [] ) {
            $tables['ug1'] = 'user_groups';
            $jconds['ug1'] = [ 'JOIN', 'ug1.ug_user = user_id' ];
            $conds['ug1.ug_group'] = $this->groups;
            $conds[] = 'ug1.ug_expiry IS NULL OR ug1.ug_expiry >= ' . $dbr->addQuotes( $dbr->timestamp() );
        }
        if ( $this->excludegroups !== [] ) {
            $tables['ug2'] = 'user_groups';
            $jconds['ug2'] = [ 'LEFT JOIN', [
                'ug2.ug_user = user_id',
                'ug2.ug_group' => $this->excludegroups,
                'ug2.ug_expiry IS NULL OR ug2.ug_expiry >= ' . $dbr->addQuotes( $dbr->timestamp() ),
            ] ];
            $conds['ug2.ug_user'] = null;
        }
        if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
            $conds[] = 'NOT EXISTS (' . $dbr->selectSQLText(
                    'ipblocks', '1', [ 'ipb_user=user_id', 'ipb_deleted' => 1 ]
                ) . ')';
        }
        if ( $useActor ) {
            $tables[] = 'actor';
            $jconds['actor'] = [
                'JOIN',
                'actor_user = user_id',
            ];
            $fields[] = 'actor_id';
        }
        $subquery = $dbr->buildSelectSubquery( $tables, $fields, $conds, $fname, $options, $jconds );

        // Outer query to select the recent edit counts for the selected active users
        $tables = [ 'qcc_users' => $subquery, 'recentchanges' ];
        $jconds = [ 'recentchanges' => [ 'LEFT JOIN', [
            $useActor ? 'rc_actor = actor_id' : 'rc_user_text = qcc_title',
            'rc_type != ' . $dbr->addQuotes( RC_EXTERNAL ), // Don't count wikidata.
            'rc_type != ' . $dbr->addQuotes( RC_CATEGORIZE ), // Don't count categorization changes.
            'rc_log_type IS NULL OR rc_log_type != ' . $dbr->addQuotes( 'newusers' ),
            'rc_timestamp >= ' . $dbr->addQuotes( $timestamp ),
        ] ] ];
        $conds = [];

        return [
            'tables' => $tables,
            'fields' => [
                'qcc_title',
                'user_name' => 'qcc_title',
                'user_id' => 'user_id',
                'recentedits' => 'COUNT(rc_id)'
            ],
            'options' => [ 'GROUP BY' => [ 'qcc_title' ] ],
            'conds' => $conds,
            'join_conds' => $jconds,
        ];
    }

    protected function buildQueryInfo( $offset, $limit, $order ) {
        $fname = __METHOD__ . ' (' . $this->getSqlComment() . ')';

        $sortColumns = array_merge( [ $this->mIndexField ], $this->mExtraSortFields );
        if ( $order === self::QUERY_ASCENDING ) {
            $dir = 'ASC';
            $orderBy = $sortColumns;
            $operator = $this->mIncludeOffset ? '>=' : '>';
        } else {
            $dir = 'DESC';
            $orderBy = [];
            foreach ( $sortColumns as $col ) {
                $orderBy[] = $col . ' DESC';
            }
            $operator = $this->mIncludeOffset ? '<=' : '<';
        }
        $info = $this->getQueryInfo( [
            'limit' => intval( $limit ),
            'order' => $dir,
            'conds' =>
                $offset != '' ? [ $this->mIndexField . $operator . $this->mDb->addQuotes( $offset ) ] : [],
        ] );

        $tables = $info['tables'];
        $fields = $info['fields'];
        $conds = $info['conds'];
        $options = $info['options'];
        $join_conds = $info['join_conds'];
        $options['ORDER BY'] = $orderBy;
        return [ $tables, $fields, $conds, $fname, $options, $join_conds ];
    }

    protected function doBatchLookups() {
        parent::doBatchLookups();

        $uids = [];
        foreach ( $this->mResult as $row ) {
            $uids[] = $row->user_id;
        }
        // Fetch the block status of the user for showing "(blocked)" text and for
        // striking out names of suppressed users when privileged user views the list.
        // Although the first query already hits the block table for un-privileged, this
        // is done in two queries to avoid huge quicksorts and to make COUNT(*) correct.
        $dbr = $this->getDatabase();
        $res = $dbr->select( 'ipblocks',
            [ 'ipb_user', 'MAX(ipb_deleted) AS deleted, MAX(ipb_sitewide) AS sitewide' ],
            [ 'ipb_user' => $uids ],
            __METHOD__,
            [ 'GROUP BY' => [ 'ipb_user' ] ]
        );
        $this->blockStatusByUid = [];
        foreach ( $res as $row ) {
            $this->blockStatusByUid[$row->ipb_user] = [
                'deleted' => $row->deleted,
                'sitewide' => $row->sitewide,
            ];
        }
        $this->mResult->seek( 0 );
    }

    function formatRow( $row ) {
        $userName = $row->user_name;

        $ulinks = Linker::userLink( $row->user_id, $userName );
        $ulinks .= Linker::userToolLinks( $row->user_id, $userName );

        $lang = $this->getLanguage();

        $list = [];

        $ugms = self::getGroupMemberships( intval( $row->user_id ), $this->userGroupCache );
        foreach ( $ugms as $ugm ) {
            $list[] = $this->buildGroupLink( $ugm, $userName );
        }

        $groups = $lang->commaList( $list );

        $item = $lang->specialList( $ulinks, $groups );

        // If there is a block, 'deleted' and 'sitewide' are both set on
        // $this->blockStatusByUid[$row->user_id].
        $blocked = '';
        $isBlocked = isset( $this->blockStatusByUid[$row->user_id] );
        if ( $isBlocked ) {
            if ( $this->blockStatusByUid[$row->user_id]['deleted'] == 1 ) {
                $item = "<span class=\"deleted\">$item</span>";
            }
            if ( $this->blockStatusByUid[$row->user_id]['sitewide'] == 1 ) {
                $blocked = ' ' . $this->msg( 'listusers-blocked', $userName )->escaped();
            }
        }
        $count = $this->msg( 'activeusers-count' )->numParams( $row->recentedits )
            ->params( $userName )->numParams( $this->RCMaxAge )->escaped();

        return Html::rawElement( 'li', [], "{$item} [{$count}]{$blocked}" );
    }

}