/**
* Гнерация логина пользователя
* в случае успешного выполнения возвращает уникальный логин пользователя
*
* @param $first_name
* @param string $last_name
* @param string $nickname
* @param string $bdate
* @param array $delimiters
*
* @return string
*/
function ulogin_generateNickname($first_name, $last_name = "", $delimiters = array('.', '_'))
{
$delim = array_shift($delimiters);
$first_name = ulogin::uLoginTranslitIt($first_name);
$first_name_s = substr($first_name, 0, 1);
$variants = array();
if (!empty($nickname)) {
$variants[] = $nickname;
}
$variants[] = $first_name;
if (!empty($last_name)) {
$last_name = ulogin::uLoginTranslitIt($last_name);
$variants[] = $first_name . $delim . $last_name;
$variants[] = $last_name . $delim . $first_name;
$variants[] = $first_name_s . $delim . $last_name;
$variants[] = $first_name_s . $last_name;
$variants[] = $last_name . $delim . $first_name_s;
$variants[] = $last_name . $first_name_s;
}
$i = 0;
$exist = true;
while (true) {
if ($exist = ulogin::ulogin_userExist($variants[$i])) {
foreach ($delimiters as $del) {
$replaced = str_replace($delim, $del, $variants[$i]);
if ($replaced !== $variants[$i]) {
$variants[$i] = $replaced;
if (!($exist = ulogin::ulogin_userExist($variants[$i]))) {
break;
}
}
}
}
if ($i >= count($variants) - 1 || !$exist) {
break;
}
$i++;
}
return $variants[$i];
}
