<?php

abstract class App_ECommerce_Checkout_Adapter_Payment_Abstract
{
    protected $_config;
    protected $_data;
    protected $_paymentService;
    /**
     * @var App_Service_Payment_Abstract
     */
    protected $_payment;

    /**
     * Public constructor
     *
     * @param array $orderData
     * @param array $cartData
     */
    public function __construct(array $orderData = array(), array $cartData = array())
    {
        $this->setData($orderData, $cartData);
    }

    protected function _getConfig()
    {
        if (null === $this->_config) {
            $config = Qs_Application::getConfig('ECommerce_Checkout');
            $this->_config = $config->get('shipping');
        }
        return $this->_config;
    }

    /**
     * Prepare and set data for payment
     *
     * @param array $orderData
     * @param array $cartData
     * @return App_ECommerce_Checkout_Adapter_Payment_Abstract
     */
    public function setData(array $orderData, array $cartData)
    {
        $this->_data = $this->_prepareData($orderData, $cartData);
        return $this;
    }

    /**
     * @param $orderData
     * @param $cartData
     * @return array
     * @throws Qs_Exception
     */
    protected function _prepareData($orderData, $cartData)
    {
        throw new Qs_Exception('Method ' . __METHOD__ . ' is not implemented');
    }

    /**
     * Return payment data
     *
     * @return array
     */
    public function getData()
    {
        return $this->_data;
    }

    /**
     * Process payment
     *
     * @param array $data
     * @param null $type
     * @return App_ECommerce_Checkout_Adapter_Payment_Abstract
     */
    public function process($data = array(), $type = null)
    {
        $options = array('data' => (!empty($data) ? $data : $this->getData()));
        if (!empty($type)) {
            $options['type'] = $type;
        }
        $this->_payment = App_Service_Payment::factory($this->_paymentService, $options);
        return $this;
    }

    /**
     * Return payment object
     *
     * @return App_Service_Payment_Abstract
     */
    public function getPayment()
    {
        return $this->_payment;
    }

    /**
     * Return payment response object
     *
     * @return App_Service_Payment_ResponseAbstract|bool
     */
    public function getProcessResponse()
    {
        if ($this->_payment) {
            return $this->_payment->getResponse();
        }
        return false;
    }

    /**
     * Return payment response errors
     */
    public function getErrors()
    {
        return false;
    }

    /**
     * Verify and complete order
     *
     * @return boolean
     */
    public function verifyOrder()
    {
        return true;
    }

    /**
     * @return null|string
     */
    public function getResponseTransactionId()
    {
        if (!$this->getProcessResponse()) {
            return null;
        }
        return $this->getProcessResponse()->getData('transaction_id');
    }
}