<?php
/**
 * Copyright © 2013-2017 Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Sales\Controller\Adminhtml\Order;

use Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection;
use Magento\Backend\App\Action\Context;
use Magento\Ui\Component\MassAction\Filter;
use Magento\Sales\Model\ResourceModel\Order\CollectionFactory;

class MassCancel extends \Magento\Sales\Controller\Adminhtml\Order\AbstractMassAction
{
    /**
     * Authorization level of a basic admin session.
     *
     * @see _isAllowed()
     */
    const ADMIN_RESOURCE = 'Magento_Sales::cancel';

    /**
     * @param Context $context
     * @param Filter $filter
     * @param CollectionFactory $collectionFactory
     */
    public function __construct(Context $context, Filter $filter, CollectionFactory $collectionFactory)
    {
        parent::__construct($context, $filter);
        $this->collectionFactory = $collectionFactory;
    }

    /**
     * Cancel selected orders
     *
     * @param AbstractCollection $collection
     * @return \Magento\Backend\Model\View\Result\Redirect
     */
    protected function massAction(AbstractCollection $collection)
    {
        $countCancelOrder = 0;
        foreach ($collection->getItems() as $order) {
            if (!$order->canCancel()) {
                continue;
            }
            $order->cancel();
            $order->save();
            $countCancelOrder++;
        }
        $countNonCancelOrder = $collection->count() - $countCancelOrder;

        if ($countNonCancelOrder && $countCancelOrder) {
            $this->messageManager->addError(__('%1 order(s) cannot be canceled.', $countNonCancelOrder));
        } elseif ($countNonCancelOrder) {
            $this->messageManager->addError(__('You cannot cancel the order(s).'));
        }

        if ($countCancelOrder) {
            $this->messageManager->addSuccess(__('We canceled %1 order(s).', $countCancelOrder));
        }
        $resultRedirect = $this->resultRedirectFactory->create();
        $resultRedirect->setPath($this->getComponentRefererUrl());

        return $resultRedirect;
    }
}
