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<?php
/**
 * Copyright © Extmag. All rights reserved.
 */

namespace Extmag\Shiplab\Controller\Adminhtml\ShippingMethods;

use Extmag\Shiplab\Model\ResourceModel\ShippingMethods\Collection;
use Extmag\Shiplab\Model\ResourceModel\ShippingMethods\CollectionFactory;
use Extmag\Shiplab\Model\ShippingMethods;
use LogicException;
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\App\ResponseInterface;
use Magento\Framework\Controller\Result\Redirect;
use Magento\Framework\Controller\ResultInterface;
use Magento\Framework\Exception\FileSystemException;
use Magento\Framework\File\Csv;
use Magento\Framework\Filesystem\Driver\File;

class Export extends Action
{
    /**
     * @var CollectionFactory
     */
    private $collection;
    /**
     * @var Csv
     */
    private $csvProcessor;
    /**
     * @var DirectoryList
     */
    private $directoryList;
    /**
     * @var FileFactory
     */
    private $fileFactory;
    /**
     * @var File
     */
    private $file;

    /**
     * @param Context           $context
     * @param CollectionFactory $collection
     * @param Csv               $csvProcessor
     * @param DirectoryList     $directoryList
     * @param FileFactory       $fileFactory
     * @param File              $file
     */
    public function __construct(
        Context $context,
        CollectionFactory $collection,
        Csv $csvProcessor,
        DirectoryList $directoryList,
        FileFactory $fileFactory,
        File $file
    ) {
        parent::__construct($context);
        $this->collection    = $collection;
        $this->csvProcessor  = $csvProcessor;
        $this->directoryList = $directoryList;
        $this->fileFactory   = $fileFactory;
        $this->file          = $file;
    }

    /**
     * Authorization level of a basic admin session
     *
     * @see _isAllowed()
     */
    public const ADMIN_RESOURCE = 'Extmag_Shiplab::shiplab_shippingmethods_export';

    /**
     * @return ResponseInterface|Redirect|ResultInterface
     * @throws FileSystemException
     */
    public function execute()
    {
        try {
            /**
             * @var Collection $collection
             */
            $collection        = $this->collection->create();
            $itemsSize         = $collection->count();
            $fileDirectoryPath = $this->directoryList->getPath(DirectoryList::VAR_DIR);
            $fileName          = 'export_shipping_methods.csv';
            $filePath          = $fileDirectoryPath . '/' . $fileName;
            $fields            = array_keys($collection->getFields());
            unset($fields[0]);
            $this->csvProcessor
                ->setEnclosure('"')
                ->setDelimiter(',');
            if ($itemsSize > 0) {
                $items = [];
                /**
                 * @var ShippingMethods $item
                 */
                foreach ($collection as $item) {
                    $datum = $item->getData();
                    unset($datum['entity_id']);
                    $items[] = $datum;
                }

                $this->csvProcessor->appendData($filePath, array_merge([$fields], $items));
            } else {
                $this->csvProcessor->appendData($filePath, [$fields]);
            }

            return $this->fileFactory->create(
                $fileName,
                $this->file->fileGetContents($filePath),
                \Magento\Framework\Filesystem\DirectoryList::SYS_TMP,
                'text/csv'
            );
        } catch (LogicException $e) {
            $this->messageManager->addErrorMessage($e->getMessage());

            return $this->resultRedirectFactory->create()->setRefererOrBaseUrl();
        }
    }
}