public function hookAuthentication($params)
{
// Update or merge the guest with the customer id (login and account creation)
$guest = new Guest($params['cookie']->id_guest);
$result = Db::getInstance()->getRow('
SELECT `id_guest`
FROM `' . _DB_PREFIX_ . 'guest`
WHERE `id_customer` = ' . (int) $params['cookie']->id_customer);
if ((int) $result['id_guest']) {
// The new guest is merged with the old one when it's connecting to an account
$guest->mergeWithCustomer($result['id_guest'], $params['cookie']->id_customer);
$params['cookie']->id_guest = $guest->id;
} else {
// The guest is duplicated if it has multiple customer accounts
$method = $guest->id_customer ? 'add' : 'update';
$guest->id_customer = $params['cookie']->id_customer;
$guest->{$method}();
}
}
