<?php
class Register
{
  private $username;
  private $password;
  private $salt;
  private $passmd5;
  private $dynsalt;
  private $passcrypted;

  private $errors;
  private $token;

  public function __construct()
  {
    $this->errors = array();

    $this->username = $this->$_POST['user'];
    $this->username = strtolower($this->username);
    $this->username = ucwords($this->username);

    $this->password = $this->$_POST['pass'];
    $this->token    = $_POST['token'];
    $this->salt     = "hhjhkjjughnbhgg783bg873378b9873**^`?";

    $this->passmd5  = md5($this->password);
    $this->dynsalt = sha1($this->username.$this->passmd5.$this->salt);
    $this->passcrypted = sha1($this->dynsalt);
  }

  public function process()
  {
    if($this->valid_token() && $this->valid_data())
         $this->register();

    return count($this->errors)? 0 : 1;
  }

  public function register()
  {
   mysql_connect("localhost","root","") or die(mysql_error());
   mysql_select_db("databas") or die (mysql_error());


   mysql_query("INSERT INTO users(username,password) VALUES ('{$this->username}','{$this->passcrypted}')");

   if(mysql_affected_rows()< 1)
     $this->errors[] = 'Hmm något är fel';
  }

  public function user_exists()
  {
    mysql_connect("localhost","root","") or die(mysql_error());
    mysql_select_db("databas") or die (mysql_error());

    $data = mysql_query("SELECT ID FROM users WHERE username = '{$this->username}'");

    return mysql_num_rows($data)? 1 : 0;
  }

  public function show_errors()
  {
    echo "<h3>Fel:</h3>";

    foreach($this->errors as $key=>$value)
      echo $value."<br>";
  }

  public function valid_data()
  {
    if($this->user_exists())
      $this->errors[] = 'Användarnamnet är upptaget';

    if (!preg_match('/^[a-z0-15]{3,10}$/i', $this->username))
      $this->errors[] = 'Du får bara ha bokstäver och siffror i användarnamnet.<br/>Och det måste vara mellan 3 och 10 tecken.';

    if(empty($this->username))
      $this->errors[] = 'Ogiltigt användarnamn';
    if(empty($this->password))
      $this->errors[] = 'Ogiltigt lösenord';

  return count($this->errors)? 0 : 1;
  }


  public function valid_token()
  {
   if(!isset($_SESSION['token']) || $this->token != $_SESSION['token'])
     $this->errors[] = 'Haxxor fel';

   return count($this->errors)? 0 : 1;
  }
}

?>