MessagePrefixStats.php

<?php
declare( strict_types = 1 );
 
namespace MediaWiki\Extension\Translate\Statistics;
 
use InvalidArgumentException;
use MediaWiki\Extension\Translate\MessageLoading\MessageCollection;
use MediaWiki\Extension\Translate\MessageLoading\MessageDefinitions;
use MessageGroupStats;
use TitleParser;
 
class MessagePrefixStats {
    private TitleParser $titleParser;
    private ?array $allStats;
 
    public function __construct( TitleParser $titleParser ) {
        $this->titleParser = $titleParser;
    }
 
    public function forAll( string ...$prefixedMessagesKeys ): array {
        $languages = MessageGroupStats::getLanguages();
        $stats = [];
 
        if ( !$prefixedMessagesKeys ) {
            throw new InvalidArgumentException( 'Empty prefixed message keys passed as argument' );
        }
 
        $messagesForDefinition = [];
        foreach ( $prefixedMessagesKeys as $key ) {
            $messageTitle = $this->titleParser->parseTitle( $key );
            $messageNamespace = $messageTitle->getNamespace();
            $messagesForDefinition["$messageNamespace:{$messageTitle->getDBkey()}"] = null;
        }
 
        $messageDefinitions = new MessageDefinitions( $messagesForDefinition, false );
 
        foreach ( $languages as $code ) {
            if ( $this->isLanguageUnused( $code ) ) {
                $collection = MessageCollection::newFromDefinitions( $messageDefinitions, $code );
                $stats[ $code ] = MessageGroupStats::getStatsForCollection( $collection );
            } else {
                $stats[ $code ] = MessageGroupStats::getEmptyStats();
                $stats[ $code ][ MessageGroupStats::TOTAL ] = count( $prefixedMessagesKeys );
            }
        }
 
        return $stats;
    }
 
    private function isLanguageUnused( string $languageCode ): bool {
        $allStats = $this->getAllLanguageStats();
        $languageStats = $allStats[ $languageCode ] ?? [];
        $translatedStats = $languageStats[ MessageGroupStats::TRANSLATED ];
        $fuzzyStats = $languageStats[ MessageGroupStats::FUZZY ];
 
        return $translatedStats !== 0 || $fuzzyStats !== 0;
    }
 
    private function getAllLanguageStats(): array {
        $this->allStats ??= MessageGroupStats::getApproximateLanguageStats();
        return $this->allStats;
    }
}