<?php

        class Authenticator extends Object implements IAuthenticator
        {
                public function authenticate(array $logindata)
                {
                        $username = $logindata[self::USERNAME];
                        $password = Utils::encodePass($logindata[self::PASSWORD]);

                        $result = dibi::query("select * from [is_users] where username=%s", $username)->fetch();

                        if (!$result) // nebyl nalezen zaznam v DB, uzivatel neexistuje
                        {
                                throw new AuthenticationException("Zadaný uživatel '$username' neexistuje!", self::IDENTITY_NOT_FOUND);
                        }

                        if ($result->password !== $password)
                        {
                                throw new AuthenticationException("Zadali jste nesprávné heslo!", self::INVALID_CREDENTIAL);
                        }

                        if ($result->blocked === 'yes')
                        {
                                throw new AuthenticationException("Blokovany uzivatel!", self::INVALID_CREDENTIAL);
                        }

                        $identita = new Identity($username, $result->role);
                        $identita->realname = $result->jmeno." ".$result->prijmeni;
                        $identita->id = $result->id;

                        return $identita;

                }
        }

?>