TransferBuild.php

<?php

namespace OrderService\Resources\Simulation;

use OrderService\Resources\AbstractTransferBuild;

class TransferBuild extends AbstractTransferBuild
{

    /**
     * {@inheritdoc}
     */
    protected function getParams()
    {
        $result = [
            'accountId' => $this->getRequest()->getAccountId(),
            'deliveryDate' => $this->getRequest()->getDeliveryDate(),
            'paymentMethod' => $this->getCustomerPaymentMethod(),
            'empties' => [
                'extraAmount' => $this->getRequest()->getEmptyExtraAmount()
            ]
        ];

        foreach ($this->getRequest()->getItems() as $item) {
            $result['items'][] = [
                'sku' => $item->getSku(),
                'quantity' => $item->getQuantity()
            ];
        }
        return $result;
    }

    /**
     * Getting payment method from customer if there are different value from simulation data.
     *
     * @return string
     */
    protected function getCustomerPaymentMethod()
    {
        // Get payment method from customer.
        $customerMethods = $this->request->customer->getPaymentMethods();
        // Get payment method from order simulation quote table.
        $simulatedMethod = $this->getRequest()->getPaymentMethod();

        // Get default playment methods code.
        $creditCode = $this->getCreditCode();
        $usedMethod = $this->getCashCode();

        // Check if account have Credit as payment method.
        if (in_array($creditCode, unserialize($customerMethods))) {
            // Define as used method.
            $usedMethod = $creditCode;
        }

        // Check if order simulation method is different of customer payment method.
        if ($simulatedMethod != $usedMethod) {
            return $usedMethod;
        }
        // Return default value.
        return $simulatedMethod;
    }

    /**
     * @return string
     */
    protected function getCashCode()
    {
        /**
         * @var \Payment\Model\Method\Cash
         */
       return strtoupper(\Payment\Model\Method\Cash::CODE);
    }

    /**
     * @return string
     */
    protected function getCreditCode()
    {
        /**
         * @var \Payment\Model\Method\Credit
         */
       return strtoupper(\Payment\Model\Method\Credit::CODE);
    }
}