DonorLanguage.php

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<?php
 
class DonorLanguage implements StagingHelper {
    public function stage( GatewayType $adapter, $normalized, &$stagedData ) {
        if ( !isset( $normalized['language'] ) ) {
            return;
        }
        $language = $normalized['language'];
        $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;
    }
}