/** * When a cart goes below 0 (due to discounts), set the amount to 0. * * @param CartInterface $cart Cart */ public function validateNegativeAmount(CartInterface $cart) { $amount = $cart->getAmount(); if ($amount->getAmount() <= 0) { $cart->setAmount(Money::create(0, $amount->getCurrency())); } }
/** * Load cart total price. * * @param CartInterface $cart Cart */ public function loadCartTotalAmount(CartInterface $cart) { $currency = $this->currencyWrapper->get(); $finalAmount = clone $cart->getPurchasableAmount(); /** * Calculates the shipping amount. */ $shippingAmount = $cart->getShippingAmount(); if ($shippingAmount instanceof MoneyInterface) { $convertedShippingAmount = $this->currencyConverter->convertMoney($shippingAmount, $currency); $finalAmount = $finalAmount->add($convertedShippingAmount); } /** * Calculates the coupon amount. */ $couponAmount = $cart->getCouponAmount(); if ($couponAmount instanceof MoneyInterface) { $convertedCouponAmount = $this->currencyConverter->convertMoney($couponAmount, $currency); $finalAmount = $finalAmount->subtract($convertedCouponAmount); } $cart->setAmount($finalAmount); }