AddFileHelpTextHandler.php

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<?php

namespace Elgg\Input;

class AddFileHelpTextHandler {
    
    public function __invoke(\Elgg\Event $event) {
        $return = $event->getValue();
        if (elgg_extract('input_type', $return) !== 'file') {
            return;
        }
    
        if (!elgg_extract('show_upload_limit', $return, true)) {
            return;
        }
    
        $help = elgg_extract('help', $return, '');
    
        // Get post_max_size and upload_max_filesize
        $post_max_size = elgg_get_ini_setting_in_bytes('post_max_size');
        $upload_max_filesize = elgg_get_ini_setting_in_bytes('upload_max_filesize');
    
        // Determine the correct value
        $max_upload = min($upload_max_filesize, $post_max_size);
    
        $help .= ' ' . elgg_echo('input:file:upload_limit', [elgg_format_bytes($max_upload)]);
    
        $return['help'] = trim($help);
    
        return $return;
    }
}