<?php namespace ZN\Request;
/**
 * ZN PHP Web Framework
 * 
 * "Simplicity is the ultimate sophistication." ~ Da Vinci
 * 
 * @package ZN
 * @license MIT [http://opensource.org/licenses/MIT]
 * @author  Ozan UYKUN [ozan@znframework.com]
 */

class Server
{
    /**
     * Magic Call Static
     * 
     * @param string $method
     * @param array  $parameters
     * 
     * @return mixed
     */
    public static function __callStatic($method, $parameters)
    {
        return self::data($method);
    }

    /**
     * OS
     * 
     * @return string
     * 
     * @codeCoverageIgnore
     */
    public static function os() : string
    {
        if( stristr(PHP_OS, 'WIN') )
        {
            return 'WIN';
        }
        elseif( stristr(PHP_OS, 'MAC') )
        {
            return 'MAC';
        }
        elseif( stristr(PHP_OS, 'LINUX') )
        {
            return 'LINUX';
        }
        elseif( stristr(PHP_OS, 'UNIX') )
        {
            return 'UNIX';
        }
        else
        {
            return 'UNKNOWN';
        }
    }

    /**
     * server
     * 
     * The compiled version of the $_SERVER global variable.
     * 
     * @param string $type
     * 
     * @return mixed
     */
    public static function data(?string $type = NULL)
    {
        $server =
        [
            NULL                         => $_SERVER,
            'name'                       => $_SERVER['SERVER_NAME']           ?? false,
            'admin'                      => $_SERVER['SERVER_ADMIN']          ?? false,
            'addr'                       => $_SERVER['SERVER_ADDR']           ?? false,
            'port'                       => $_SERVER['SERVER_PORT']           ?? false,
            'protocol'                   => $_SERVER['SERVER_PROTOCOL']       ?? false,
            'signature'                  => $_SERVER['SERVER_SIGNATURE']      ?? false,
            'software'                   => $_SERVER['SERVER_SOFTWARE']       ?? false,
            'remoteAddr'                 => $_SERVER['REMOTE_ADDR']           ?? false,
            'remotePort'                 => $_SERVER['REMOTE_PORT']           ?? false,
            'requestMethod'              => $_SERVER['REQUEST_METHOD']        ?? false,
            'requestUri'                 => $_SERVER['REQUEST_URI']           ?? false,
            'requestScheme'              => $_SERVER['REQUEST_SCHEME']        ?? false,
            'requestTime'                => $_SERVER['REQUEST_TIME']          ?? false,
            'requestTimeFloat'           => $_SERVER['REQUEST_TIME_FLOAT']    ?? false,
            'accept'                     => $_SERVER['HTTP_ACCEPT']           ?? false,
            'acceptCharset'              => $_SERVER['HTTP_ACCEPT_CHARSET']   ?? false,
            'acceptEncoding'             => $_SERVER['HTTP_ACCEPT_ENCODING']  ?? false,
            'acceptLanguage'             => $_SERVER['HTTP_ACCEPT_LANGUAGE']  ?? false,
            'clientIp'                   => $_SERVER['HTTP_CLIENT_IP']        ?? false,
            'xForwardedHost'             => $_SERVER['HTTP_X_FORWARDED_HOST'] ?? false,
            'xForwardedFor'              => $_SERVER['HTTP_X_FORWARDED_FOR']  ?? false,
            'xOriginalUrl'               => $_SERVER['HTTP_X_ORIGINAL_URL']   ?? false,
            'xRequestedWith'             => $_SERVER['HTTP_X_REQUESTED_WITH'] ?? false,
            'connection'                 => $_SERVER['HTTP_CONNECTION']       ?? false,
            'host'                       => $_SERVER['HTTP_HOST']             ?? false,
            'referer'                    => $_SERVER['HTTP_REFERER']          ?? false,
            'userAgent'                  => $_SERVER['HTTP_USER_AGENT']       ?? false,
            'cookie'                     => $_SERVER['HTTP_COOKIE']           ?? false,
            'cacheControl'               => $_SERVER['HTTP_CACHE_CONTROL']    ?? false,
            'https'                      => $_SERVER['HTTPS']                 ?? false,
            'scriptFileName'             => $_SERVER['SCRIPT_FILENAME']       ?? false,
            'scriptName'                 => $_SERVER['SCRIPT_NAME']           ?? false,
            'path'                       => $_SERVER['PATH']                  ?? false,
            'pathInfo'                   => $_SERVER['PATH_INFO']             ?? false,
            'currentPath'                => $_SERVER['PATH_INFO']             ?? $_SERVER['QUERY_STRING'] ?? false,
            'pathTranslated'             => $_SERVER['PATH_TRANSLATED']       ?? false,
            'pathext'                    => $_SERVER['PATHEXT']               ?? false,
            'redirectQueryString'        => $_SERVER['REDIRECT_QUERY_STRING'] ?? false,
            'redirectUrl'                => $_SERVER['REDIRECT_URL']          ?? false,
            'redirectStatus'             => $_SERVER['REDIRECT_STATUS']       ?? false,
            'phpSelf'                    => $_SERVER['PHP_SELF']              ?? false,
            'queryString'                => $_SERVER['QUERY_STRING']          ?? false,
            'documentRoot'               => $_SERVER['DOCUMENT_ROOT']         ?? false,
            'windir'                     => $_SERVER['WINDIR']                ?? false,
            'comspec'                    => $_SERVER['COMSPEC']               ?? false,
            'systemRoot'                 => $_SERVER['SystemRoot']            ?? false,
            'gatewayInterface'           => $_SERVER['GATEWAY_INTERFACE']     ?? false
        ];

        if( $type === 'all' )
        {
            return $server;
        }

        if( isset($server[$type]) )
        {
            if( is_array($server[$type]) )
            {
                return $server[$type];
            }
            else
            {
                $return = htmlspecialchars($server[$type], ENT_QUOTES, "utf-8");
            }
        }
        elseif( isset($_SERVER[$type]) )
        {
            $return = htmlspecialchars($_SERVER[$type], ENT_QUOTES, "utf-8");
        }

        // 5.4.3[edited]
        return str_replace('&amp;', '&', $return ?? '') ?: false;
    }
}