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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\InstantPurchase\Model\ShippingMethodChoose;
use Magento\Quote\Model\Quote\Address;
use Magento\Quote\Model\Quote\Address\Rate;
/**
* Choose cheapest shipping method for defined quote.
*/
class CheapestMethodDeferredChooser implements DeferredShippingMethodChooserInterface
{
const METHOD_CODE = 'cheapest';
/**
* @inheritdoc
*/
public function choose(Address $address)
{
$address->setCollectShippingRates(true);
$address->collectShippingRates();
$shippingRates = $address->getAllShippingRates();
if (empty($shippingRates)) {
return null;
}
$cheapestRate = $this->selectCheapestRate($shippingRates);
return $cheapestRate->getCode();
}
/**
* Selects shipping price with minimal price.
*
* @param Rate[] $shippingRates
* @return Rate
*/
private function selectCheapestRate(array $shippingRates) : Rate
{
$rate = array_shift($shippingRates);
foreach ($shippingRates as $tmpRate) {
if ($tmpRate->getPrice() < $rate->getPrice()) {
$rate = $tmpRate;
}
}
return $rate;
}
}