calculateNetAmount example

public function calculate(PriceCollection $prices, PriceCollection $shippingCosts, SalesChannelContext $context): CartPrice
    {
        if ($context->getTaxState() === CartPrice::TAX_STATE_FREE) {
            return $this->calculateNetDeliveryAmount($prices, $shippingCosts);
        }

        if ($context->getTaxState() === CartPrice::TAX_STATE_GROSS) {
            return $this->calculateGrossAmount($prices, $shippingCosts, $context);
        }

        return $this->calculateNetAmount($prices, $shippingCosts, $context);
    }

    /** * Calculates the amount for a new delivery. * `CalculatedPrice::price` and `CalculatedPrice::netPrice` are equals and taxes are empty. */
    private function calculateNetDeliveryAmount(PriceCollection $prices, PriceCollection $shippingCosts): CartPrice
    {
        $positionPrice = $prices->sum();

        $total = $positionPrice->getTotalPrice() + $shippingCosts->sum()->getTotalPrice();