diff --git a/system/autoload/Admin.php b/system/autoload/Admin.php
new file mode 100644
index 0000000..c39ee81
--- /dev/null
+++ b/system/autoload/Admin.php
@@ -0,0 +1,61 @@
+<?php
+
+/**
+ *  PHP Mikrotik Billing (https://github.com/hotspotbilling/phpnuxbill/)
+ *  by https://t.me/ibnux
+ **/
+
+
+class Admin
+{
+
+    public static function getID()
+    {
+        global $db_password;
+        if (isset($_SESSION['aid'])) {
+            return $_SESSION['aid'];
+        } else if (isset($_COOKIE['aid'])) {
+            // id.time.sha1
+            $tmp = explode('.', $_COOKIE['aid']);
+            if (sha1($tmp[0] . '.' . $tmp[1] . '.' . $db_password) == $tmp[2]) {
+                if (time() - $tmp[1] < 86400 * 7) {
+                    $_SESSION['aid'] = $tmp[0];
+                    return $tmp[0];
+                }
+            }
+        }
+        return 0;
+    }
+
+    public static function setCookie($aid)
+    {
+        global $db_password;
+        if (isset($aid)) {
+            $time = time();
+            $token = $aid . '.' . $time . '.' . sha1($aid . '.' . $time . '.' . $db_password);
+            setcookie('aid', $token, time() + 86400 * 7);
+            return $token;
+        }
+        return '';
+    }
+
+
+    public static function removeCookie()
+    {
+        if (isset($_COOKIE['aid'])) {
+            setcookie('aid', '', time() - 86400);
+        }
+    }
+
+    public static function _info($id = 0)
+    {
+        if (empty($id) && $id == 0) {
+            $id = Admin::getID();
+        }
+        if ($id) {
+            return ORM::for_table('tbl_users')->find_one($id);
+        } else {
+            return null;
+        }
+    }
+}
diff --git a/system/autoload/App.php b/system/autoload/App.php
new file mode 100644
index 0000000..71f1614
--- /dev/null
+++ b/system/autoload/App.php
@@ -0,0 +1,29 @@
+<?php
+/**
+ *  PHP Mikrotik Billing (https://github.com/hotspotbilling/phpnuxbill/)
+ *  by https://t.me/ibnux
+ **/
+
+
+class App{
+    public static function _run(){
+        return true;
+    }
+
+    public static function getToken(){
+        return md5(microtime());
+    }
+
+    public static function setToken($token, $value){
+        $_SESSION[$token] = $value;
+    }
+
+    public static function getTokenValue($key){
+        if(isset($_SESSION[$key])){
+            return $_SESSION[$key];
+        }else{
+            return "";
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/system/autoload/Balance.php b/system/autoload/Balance.php
new file mode 100644
index 0000000..6748dfa
--- /dev/null
+++ b/system/autoload/Balance.php
@@ -0,0 +1,64 @@
+<?php
+/**
+ *  PHP Mikrotik Billing (https://github.com/hotspotbilling/phpnuxbill/)
+ *  by https://t.me/ibnux
+ **/
+/**
+ *  This script is for managing user balance
+ **/
+
+class Balance
+{
+
+    public static function plus($id_customer, $amount)
+    {
+        $c = ORM::for_table('tbl_customers')->where('id', $id_customer)->find_one();
+        $c->balance = $amount + $c['balance'];
+        $c->save();
+    }
+
+    public static function transfer($id_customer, $phoneTarget, $amount)
+    {
+        global $config;
+        if (Balance::min($id_customer, $amount)) {
+            return Balance::plusByPhone($phoneTarget, $amount);
+        } else {
+            return false;
+        }
+    }
+
+    public static function min($id_customer, $amount)
+    {
+        $c = ORM::for_table('tbl_customers')->where('id', $id_customer)->find_one();
+        if ($c && $c['balance'] >= $amount) {
+            $c->balance = $c['balance'] - $amount;
+            $c->save();
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public static function plusByPhone($phone_customer, $amount)
+    {
+        $c = ORM::for_table('tbl_customers')->where('username', $phone_customer)->find_one();
+        if ($c) {
+            $c->balance = $amount + $c['balance'];
+            $c->save();
+            return true;
+        }
+        return false;
+    }
+
+    public static function minByPhone($phone_customer, $amount)
+    {
+        $c = ORM::for_table('tbl_customers')->where('username', $phone_customer)->find_one();
+        if ($c && $c['balance'] >= $amount) {
+            $c->balance = $c['balance'] - $amount;
+            $c->save();
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
diff --git a/system/autoload/Csrf.php b/system/autoload/Csrf.php
new file mode 100644
index 0000000..57752a0
--- /dev/null
+++ b/system/autoload/Csrf.php
@@ -0,0 +1,55 @@
+<?php
+
+/**
+ *  PHP Mikrotik Billing (https://github.com/hotspotbilling/phpnuxbill/)
+ *  by https://t.me/ibnux
+ **/
+
+
+class Csrf
+{
+    private static $tokenExpiration = 1800; // 30 minutes
+
+    public static function generateToken($length = 16)
+    {
+        return bin2hex(random_bytes($length));
+    }
+
+    public static function validateToken($token, $storedToken)
+    {
+        return hash_equals($token, $storedToken);
+    }
+
+    public static function check($token)
+    {
+        global $config;
+        if($config['csrf_enabled'] == 'yes') {
+            if (isset($_SESSION['csrf_token'], $_SESSION['csrf_token_time'], $token)) {
+                $storedToken = $_SESSION['csrf_token'];
+                $tokenTime = $_SESSION['csrf_token_time'];
+
+                if (time() - $tokenTime > self::$tokenExpiration) {
+                    self::clearToken();
+                    return false;
+                }
+
+                return self::validateToken($token, $storedToken);
+            }
+            return false;
+        }
+        return true;
+    }
+
+    public static function generateAndStoreToken()
+    {
+        $token = self::generateToken();
+        $_SESSION['csrf_token'] = $token;
+        $_SESSION['csrf_token_time'] = time();
+        return $token;
+    }
+
+    public static function clearToken()
+    {
+        unset($_SESSION['csrf_token'], $_SESSION['csrf_token_time']);
+    }
+}
diff --git a/system/autoload/File.php b/system/autoload/File.php
new file mode 100644
index 0000000..156d7be
--- /dev/null
+++ b/system/autoload/File.php
@@ -0,0 +1,108 @@
+<?php
+/**
+ *  PHP Mikrotik Billing (https://github.com/hotspotbilling/phpnuxbill/)
+ *  by https://t.me/ibnux
+ **/
+class File
+{
+
+    public static function copyFolder($from, $to, $exclude = [])
+    {
+        $files = scandir($from);
+        foreach ($files as $file) {
+            if (is_file($from . $file) && !in_array($file, $exclude)) {
+                if (file_exists($to . $file)) unlink($to . $file);
+                rename($from . $file, $to . $file);
+            } else if (is_dir($from . $file) && !in_array($file, ['.', '..'])) {
+                if (!file_exists($to . $file)) {
+                    mkdir($to . $file);
+                }
+                File::copyFolder($from . $file . DIRECTORY_SEPARATOR, $to . $file . DIRECTORY_SEPARATOR, $exclude);
+            }
+        }
+    }
+
+    public static function deleteFolder($path)
+    {
+        $files = scandir($path);
+        foreach ($files as $file) {
+            if (is_file($path . $file)) {
+                unlink($path . $file);
+            } else if (is_dir($path . $file) && !in_array($file, ['.', '..'])) {
+                File::deleteFolder($path . $file . DIRECTORY_SEPARATOR);
+                rmdir($path . $file);
+            }
+        }
+        rmdir($path);
+    }
+
+    public static function resizeCropImage($source_file, $dst_dir, $max_width, $max_height, $quality = 80)
+    {
+        $imgsize = getimagesize($source_file);
+        $width = $imgsize[0];
+        $height = $imgsize[1];
+        $mime = $imgsize['mime'];
+
+        switch ($mime) {
+            case 'image/gif':
+                $image_create = "imagecreatefromgif";
+                $image = "imagegif";
+                break;
+
+            case 'image/png':
+                $image_create = "imagecreatefrompng";
+                $image = "imagepng";
+                $quality = 7;
+                break;
+
+            case 'image/jpeg':
+                $image_create = "imagecreatefromjpeg";
+                $image = "imagejpeg";
+                $quality = 80;
+                break;
+
+            default:
+                return false;
+                break;
+        }
+
+        if ($max_width == 0) {
+            $max_width  = $width;
+        }
+
+        if ($max_height == 0) {
+            $max_height = $height;
+        }
+
+        $widthRatio = $max_width / $width;
+        $heightRatio = $max_height / $height;
+        $ratio = min($widthRatio, $heightRatio);
+        $nwidth  = (int)$width  * $ratio;
+        $nheight = (int)$height * $ratio;
+
+        $dst_img = imagecreatetruecolor($nwidth, $nheight);
+        $white = imagecolorallocate($dst_img, 255, 255, 255);
+        imagefill($dst_img, 0, 0, $white);
+        $src_img = $image_create($source_file);
+        imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $nwidth, $nheight, $width, $height);
+
+        $image($dst_img, $dst_dir, $quality);
+
+        if ($dst_img) imagedestroy($dst_img);
+        if ($src_img) imagedestroy($src_img);
+        return file_exists($dst_dir);
+    }
+
+
+    /**
+     * file path fixer
+     *
+     * @access public
+     * @param string $path
+     * @return string
+     */
+    public static function pathFixer($path)
+    {
+        return str_replace("/", DIRECTORY_SEPARATOR, $path);
+    }
+}