wikimedia/mediawiki-extensions-DonationInterface

<?php

class DonorLanguage implements StagingHelper {
    public function stage( GatewayType $adapter, $normalized, &$stagedData ) {
        if ( !isset( $normalized['language'] ) ) {
            return;
        }
        $language = $normalized['language'];
        // @phan-suppress-next-line PhanUndeclaredMethod Unknown declaration
        $adapterLanguages = $adapter->getAvailableLanguages();
        if ( !in_array( $language, $adapterLanguages ) ) {
            $fallbacks = WmfFramework::getLanguageFallbacks( $language );
            foreach ( $fallbacks as $fallback ) {
                if ( in_array( $fallback, $adapterLanguages ) ) {
                    $language = $fallback;
                    break;
                }
            }
        }

        if ( !in_array( $language, $adapterLanguages ) ) {
            $language = 'en';
        }

        $stagedData['language'] = $language;
    }
}