Method addShippingCosts

public function addShippingCosts($shippingId = 0, $paymentId = 0)
{
    //$app = JFactory::getApplication();
    if ($shippingId == 0) {
        $shippingId = $this->shipping['id'];
    }
    $shippingObject = new PhocacartShipping();
    $shippingObject->setType($this->type);
    $sI = $shippingObject->getShippingMethod((int) $shippingId);
    if (!isset($this->total[0])) {
        $this->total[0] = array();
    }
    $shippingValid = $shippingObject->checkAndGetShippingMethod((int) $shippingId, $this->total[0]);
    if (!$shippingValid) {
        PhocacartShipping::removeShipping();
        // In case user has in cart shipping method which does not exists
        // Wait for payment costs
        //PhocacartPayment::removePayment();// It does not remove payment immediately (but after reload) or when ordering (order tests the conditions)
        //$app->enqueueMessage(JText::_('COM_PHOCACART_NO_SHIPPING_METHOD_FOUND'));
        unset($sI);
    }
    if (!empty($sI)) {
        $sI->freeshipping = 0;
        if (isset($this->total[0]['free_shipping']) && $this->total[0]['free_shipping'] == 1) {
            $sI->freeshipping = 1;
        }
        $price = new PhocacartPrice();
        $priceI = $price->getPriceItemsShipping($sI->cost, $sI->cost_additional, $sI->calculation_type, $this->total[0], $sI->taxid, $sI->taxrate, $sI->taxcalculationtype, $sI->taxtitle, $sI->freeshipping, 1);
        // CALCULATION
        $calc = new PhocacartCartCalculation();
        $calc->setType($this->type);
        $this->shipping['costs'] = $priceI;
        if (!isset($this->total[0]['free_shipping']) || isset($this->total[0]['free_shipping']) && $this->total[0]['free_shipping'] != 1) {
            $this->shipping['costs']['id'] = $sI->id;
            $this->shipping['costs']['title'] = $sI->title;
            $this->shipping['costs']['title_lang'] = $sI->title;
            $this->shipping['costs']['title_lang_suffix'] = '';
            $this->shipping['costs']['title_lang_suffix2'] = '';
            $this->shipping['costs']['description'] = $sI->description;
            $this->shipping['costs']['image'] = $sI->image;
            $this->shipping['costs']['method'] = $sI->method;
            $this->shipping['costs']['params_shipping'] = !empty($this->shipping['params_shipping']) ? $this->shipping['params_shipping'] : array();
            // Update even the shipping info
            $this->shipping['id'] = $sI->id;
            $this->shipping['title'] = $sI->title;
            $this->shipping['method'] = $sI->method;
            $this->shipping['image'] = $sI->image;
        }
        $calc->calculateShipping($priceI, $this->total[0]);
        //$calc->round($this->total[0], 0);
    }
}