class FileRequirements

class FileRequirements {
    use StringTranslationTrait;
    
    /**
     * Implements hook_runtime_requirements().
     */
    public function runtime() : array {
        $requirements = [];
        $server_software = \Drupal::request()->server
            ->get('SERVER_SOFTWARE', '');
        // Get the web server identity.
        $is_nginx = preg_match("/Nginx/i", $server_software);
        $is_apache = preg_match("/Apache/i", $server_software);
        $fastcgi = $is_apache && (str_contains($server_software, 'mod_fastcgi') || str_contains($server_software, 'mod_fcgi'));
        // Check the uploadprogress extension is loaded.
        if (extension_loaded('uploadprogress')) {
            $value = $this->t('Enabled (<a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>)');
            $description = NULL;
        }
        else {
            $value = $this->t('Not enabled');
            $description = $this->t('Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a>.');
        }
        // Adjust the requirement depending on what the server supports.
        if (!$is_apache && !$is_nginx) {
            $value = $this->t('Not enabled');
            $description = $this->t('Your server is not capable of displaying file upload progress. File upload progress requires an Apache server running PHP with mod_php or Nginx with PHP-FPM.');
        }
        elseif ($fastcgi) {
            $value = $this->t('Not enabled');
            $description = $this->t('Your server is not capable of displaying file upload progress. File upload progress requires PHP be run with mod_php or PHP-FPM and not as FastCGI.');
        }
        $requirements['file_progress'] = [
            'title' => $this->t('Upload progress'),
            'value' => $value,
            'description' => $description,
        ];
        return $requirements;
    }

}