<?php

namespace MageArray\News\Controller\Adminhtml\Newspost;

use Magento\Backend\App\Action;
use Magento\Backend\App\Action\Context;
use Magento\Framework\App\Filesystem\DirectoryList;
use Magento\Framework\App\Response\Http\FileFactory;
use Magento\Framework\View\Result\PageFactory;

/**
* Class ExportXml
* @package MageArray\News\Controller\Adminhtml\Newspost
*/
class ExportXml extends Action
{
/**
* @var FileFactory
*/
protected $_fileFactory;

/**
* @var PageFactory
*/
protected $_resultPageFactory;

/**
* ExportXml constructor.
* @param Context $context
* @param FileFactory $fileFactory
* @param PageFactory $resultPageFactory
*/
public function __construct(
Context $context,
FileFactory $fileFactory,
PageFactory $resultPageFactory
) {
$this->_fileFactory = $fileFactory;
parent::__construct($context);
$this->_resultPageFactory = $resultPageFactory;
}

/**
* @return \Magento\Framework\App\ResponseInterface
* @throws \Exception
*/
public function execute()
{
/** @var \Magento\Backend\Model\View\Result\Page $resultPage */
$resultPage = $this->_resultPageFactory->create();

$fileName = 'News.xml';
$exportBlock = $resultPage->getLayout()
->createBlock(
'MageArray\News\Block\Adminhtml\Newspost\GridExport'
);
$content = $exportBlock->getExcelFile($fileName);
return $this->_fileFactory
->create($fileName, $content, DirectoryList::VAR_DIR);
}

/**
* @return bool
*/
protected function _isAllowed()
{
return $this->_authorization
->isAllowed('MageArray_News::newscomment');
}
}