Method removePayment

/*
 * Important function - when e.g. user changes the address or change the items in cart, the payment method
 * needs to be removed or revised, because user can get payment advantage when he orders 10 items but after changing
 * cart to e.g. one item, payment cannot stay the same, the same happens with countries and region
 */
public static function removePayment($type = 0, $removeCoupon = 1)
{
    if ($type == 0 || $type == 1) {
        $session = Factory::getSession();
        $session->set('guestpayment', false, 'phocaCart');
        $session->set('guestpaymentparams', false, 'phocaCart');
        if ($removeCoupon == 1) {
            $session->set('guestcoupon', false, 'phocaCart');
        }
        $session->set('guestloyaltycardnumber', false, 'phocaCart');
    }
    if ($type == 0) {
        $db = Factory::getDBO();
        $user = $vendor = $ticket = $unit = $section = array();
        $dUser = PhocacartUser::defineUser($user, $vendor, $ticket, $unit, $section);
        $set = array();
        $pos_payment_force = 0;
        if (PhocacartPos::isPos()) {
            $app = Factory::getApplication();
            $paramsC = PhocacartUtils::getComponentParameters();
            $pos_payment_force = $paramsC->get('pos_payment_force', 0);
            if ((int) $pos_payment_force > 0) {
                $pos_payment_force = PhocacartPayment::isPaymentMethodActive($pos_payment_force) === true ? (int) $pos_payment_force : 0;
            }
            if ($removeCoupon == 1 && $pos_payment_force == 0) {
                $set[] = 'coupon = 0';
            }
        } else {
            if ($removeCoupon == 1) {
                $set[] = 'coupon = 0';
            }
        }
        $set[] = 'payment = ' . (int) $pos_payment_force;
        // Remove shipping params too
        if ((int) $pos_payment_force == 0) {
            $set[] = 'params_payment = \'\'';
        }
        $sets = implode(', ', $set);
        $query = 'UPDATE #__phocacart_cart_multiple SET ' . $sets . ' WHERE user_id = ' . (int) $user->id . ' AND vendor_id = ' . (int) $vendor->id . ' AND ticket_id = ' . (int) $ticket->id . ' AND unit_id = ' . (int) $unit->id . ' AND section_id = ' . (int) $section->id;
        $db->setQuery($query);
        $db->execute();
    }
    return true;
}