<?php

class class_SYSTEM{
    function __construct(){
    }
    /**
     * Загрузка файла
     * @param $name
     * @param string $ddir
     * @param int $replacefile
     * @return array
     */
    public function uploadfile($name, $ddir = '', $replacefile = 0){
        GLOBAL $ST;
        $out = array();
        $file = '';
        //$uploaddir = $_SERVER['DOCUMENT_ROOT'] . '/upload/';
        $uploaddir = 'upload/';
        if ($ddir != '') $uploaddir .= $ddir . '/';
        if (!file_exists($uploaddir)) mkdir($uploaddir, 0777, true);
        if (isset($_FILES[$name])) {
            $pi = pathinfo($_FILES[$name]['name']);
            $fx = $pi['extension'];
            $fn = $pi['filename'];

            if(isset($_SESSION['user'])){
                $rf = $_SESSION['user']['id'].'_'.$this->translit($fn) . '.' . $fx;
            }else{
                $rf = '0_'.$this->translit($fn) . '.' . $fx;
            }
            $uploadfile = $uploaddir . $rf;
            if($replacefile==0) {
                if (file_exists($uploadfile)) {
                    if (isset($_SESSION['user'])) {
                        $rf = $_SESSION['user']['id'] . '_' . $this->translit($fn) . '_' . mt_rand(1000, 9999) . '.' . $fx;
                    } else {
                        $rf = '0_' . $this->translit($fn) . '_' . mt_rand(1000, 9999) . '.' . $fx;
                    }
                }
                $uploadfile = $uploaddir . $rf;
            }
            $fisset=false;
            if($replacefile==2) {//2ой режим если есть файл то не грузим его
                if(file_exists($uploadfile)) $fisset=true;
                $out['file'] = $rf;
                $out['path'] = $uploaddir;
                $out['err'] = 0;
                $out['msg'] = 'файл существовал';
            }
            if(!$fisset){
                if (move_uploaded_file($_FILES[$name]['tmp_name'], $uploadfile)) {
                    $out['file'] = $rf;
                    $out['path'] = $uploaddir;
                    $out['err'] = 0;
                    $out['msg'] = 'файл загрузили';
                } else {
                    $out['file'] = '';
                    $out['path'] = $uploaddir;
                    $out['err'] = 1;
                    $out['err1'] = $_FILES[$name]["error"];
                    $out['msg'] = 'файл не загрузили';
                }
            }
        }
        return $out;
    }
    public function human_filesize($bytes) {
        $bytes = floatval($bytes);
        $arBytes = array(
            0 => array(
                "UNIT" => "Тб",
                "VALUE" => pow(1024, 4)
            ),
            1 => array(
                "UNIT" => "Гб",
                "VALUE" => pow(1024, 3)
            ),
            2 => array(
                "UNIT" => "Мб",
                "VALUE" => pow(1024, 2)
            ),
            3 => array(
                "UNIT" => "Кб",
                "VALUE" => 1024
            ),
            4 => array(
                "UNIT" => "б",
                "VALUE" => 1
            ),
        );

        foreach($arBytes as $arItem)
        {
            if($bytes >= $arItem["VALUE"])
            {
                $result = $bytes / $arItem["VALUE"];
                $result = str_replace(".", "," , strval(round($result, 2)))." ".$arItem["UNIT"];
                break;
            }
        }
        return $result;
    }
    public function translit($st)
    {
        $a = array_merge(array_combine(preg_split('//u', "абвгдеёзийклмнопрстуфхцьыэАБВГДЕЁЗИЙКЛМНОПРСТУФХЦЬЫЭabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_"), preg_split('//u', "abvgdeeziyklmnoprstufhc'ieABVGDEEZIYKLMNOPRSTUFHC'IEabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_")), array("ж" => "zh", "ч" => "ch", "ш" => "sh", "щ" => "shch", "ъ" => "", "ю" => "yu", "я" => "ya", "Ж" => "Zh", "Ч" => "Ch", "Ш" => "Sh", "Щ" => "Shch", "Ъ" => "", "Ю" => "Yu", "Я" => "Ya"));
        $r = preg_split('//u', $st);
        $out = '';
        foreach ($r as $v) {
            if (isset($a[$v]))
                $out .= $a[$v];
        }
        return $out;
    }
}