wikimedia/mediawiki-extensions-TwnMainPage

<?php

use MediaWiki\Extension\Translate\MessageGroupProcessing\MessageGroups;
use MediaWiki\Extension\Translate\Statistics\MessageGroupStats;

/**
 * Helper for project handling.
 *
 * @file
 * @author Niklas Laxström
 * @license GPL-2.0-or-later
 */

class ProjectHandler {
    /**
     * @return MessageGroup[]
     */
    public function getProjects() {
        $projects = [];

        $cache = ObjectCache::getInstance( CACHE_ANYTHING );
        $cacheKey = $cache->makeKey( __METHOD__ );
        $ids = $cache->get( $cacheKey );
        if ( is_array( $ids ) ) {
            $projects = array_map( [ MessageGroups::class, 'getGroup' ], $ids );
            $projects = array_filter( $projects );
            return $projects;
        }

        // Not cached, find them
        $groups = MessageGroups::getGroupStructure();

        foreach ( $groups as $mixed ) {
            if ( is_array( $mixed ) ) {
                $group = array_shift( $mixed );
            } else {
                $group = $mixed;
            }

            if ( $group->getIcon() !== null ) {
                $projects[$group->getId()] = $group;
            }
        }

        $cache->set( $cacheKey, array_keys( $projects ), 60 * 60 * 24 );
        return $projects;
    }

    /**
     * Sort the projects by to be determined algorithm. Like most sorting
     * functions in PHP this modifies passed list in place.
     * @param MessageGroup[] &$groups
     * @param string $language Language code.
     * @param array $stats Message group stats.
     */
    public function sortByPriority( &$groups, $language, array $stats ) {
        foreach ( $groups as $index => $g ) {
            $supported = $g->getTranslatableLanguages();
            if ( is_array( $supported ) && !isset( $supported[$language] ) ) {
                unset( $groups[$index] );
            }
        }

        usort( $groups, static function ( MessageGroup $a, MessageGroup $b ) use ( $stats ) {
            $aStats = $stats[$a->getId()];
            $bStats = $stats[$b->getId()];

            $aVal = $aStats[MessageGroupStats::PROOFREAD];
            $bVal = $bStats[MessageGroupStats::PROOFREAD];

            if ( $aVal === $bVal ) {
                return 0;
            } else {
                return ( $aVal > $bVal ) ? -1 : 1;
            }
        } );
    }
}