<?php

namespace App\Helpers;

class Functions{

    public static function getIp(){
        foreach (array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key){
            if (array_key_exists($key, $_SERVER) === true){
                foreach (explode(',', $_SERVER[$key]) as $ip){
                    $ip = trim($ip);
                    if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false){
                        return $ip;
                    }
                }
            }
        }
        return request()->ip();
    }

    public static function UniqueMachineID($salt = "") {
        if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {

            $temp = sys_get_temp_dir().DIRECTORY_SEPARATOR."diskpartscript.txt";
            if(!file_exists($temp) && !is_file($temp)) file_put_contents($temp, "select disk 0\ndetail disk");
            $output = shell_exec("diskpart /s ".$temp);
            $lines = explode("\n",$output);
            $result = array_filter($lines,function($line) {
                return stripos($line,"ID:")!==false;
            });


            if(count($result)>0) {
                $result = array_shift(array_values($result));
                $result = explode(":",$result);
                $result = trim(end($result));
            } else $result = $output;
        } else {
            $result = shell_exec("blkid -o value -s UUID");
            if(stripos($result,"blkid")!==false) {
                $result = $_SERVER['HTTP_HOST'];
            }
        }
        return md5($salt.md5($result));
    }

}