newsupernova/app/code/Mageplaza/LayeredNavigation/Controller/Search/Result/Index.php

<?php
/**
 * Mageplaza
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Mageplaza.com license that is
 * available through the world-wide-web at this URL:
 * https://www.mageplaza.com/LICENSE.txt
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade this extension to newer
 * version in the future.
 *
 * @category    Mageplaza
 * @package     Mageplaza_LayeredNavigation
 * @copyright   Copyright (c) 2017 Mageplaza (http://www.mageplaza.com/)
 * @license     https://www.mageplaza.com/LICENSE.txt
 */

namespace Mageplaza\LayeredNavigation\Controller\Search\Result;

use Magento\Catalog\Model\Layer\Resolver;
use Magento\Catalog\Model\Session;
use Magento\Framework\App\Action\Context;
use Magento\Search\Model\QueryFactory;
use Magento\Store\Model\StoreManagerInterface;

/**
 * Class Index
 * @package Mageplaza\LayeredNavigation\Controller\Search\Result
 */
class Index extends \Magento\Framework\App\Action\Action
{
	/**
	 * Catalog session
	 *
	 * @var Session
	 */
	protected $_catalogSession;

	/**
	 * @var StoreManagerInterface
	 */
	protected $_storeManager;
	/**
	 * @type \Magento\Framework\Json\Helper\Data
	 */
	protected $_jsonHelper;
	/**
	 * @type \Mageplaza\LayeredNavigation\Helper\Data
	 */
	protected $_moduleHelper;
	/**
	 * @type \Magento\CatalogSearch\Helper\Data
	 */
	protected $_helper;
	/**
	 * @var QueryFactory
	 */
	private $_queryFactory;
	/**
	 * Catalog Layer Resolver
	 *
	 * @var Resolver
	 */
	private $layerResolver;

	/**
	 * @param \Magento\Framework\App\Action\Context $context
	 * @param \Magento\Catalog\Model\Session $catalogSession
	 * @param \Magento\Store\Model\StoreManagerInterface $storeManager
	 * @param \Magento\Search\Model\QueryFactory $queryFactory
	 * @param \Magento\Catalog\Model\Layer\Resolver $layerResolver
	 * @param \Magento\CatalogSearch\Helper\Data $helper
	 * @param \Magento\Framework\Json\Helper\Data $jsonHelper
	 * @param \Mageplaza\LayeredNavigation\Helper\Data $moduleHelper
	 */
	public function __construct(
		Context $context,
		Session $catalogSession,
		StoreManagerInterface $storeManager,
		QueryFactory $queryFactory,
		Resolver $layerResolver,
		\Magento\CatalogSearch\Helper\Data $helper,
		\Magento\Framework\Json\Helper\Data $jsonHelper,
		\Mageplaza\LayeredNavigation\Helper\Data $moduleHelper
	)
	{
		parent::__construct($context);
		$this->_storeManager   = $storeManager;
		$this->_catalogSession = $catalogSession;
		$this->_queryFactory   = $queryFactory;
		$this->layerResolver   = $layerResolver;
		$this->_jsonHelper     = $jsonHelper;
		$this->_moduleHelper   = $moduleHelper;
		$this->_helper         = $helper;
	}

	/**
	 * Display search result
	 *
	 * @return void
	 */
	public function execute()
	{
		$this->layerResolver->create(Resolver::CATALOG_LAYER_SEARCH);
		/* @var $query \Magento\Search\Model\Query */
		$query = $this->_queryFactory->get();

		$query->setStoreId($this->_storeManager->getStore()->getId());

		if ($query->getQueryText() != '') {
			if ($this->_helper->isMinQueryLength()) {
				$query->setId(0)->setIsActive(1)->setIsProcessed(1);
			} else {
				$query->saveIncrementalPopularity();

				if ($query->getRedirect()) {
					$this->getResponse()->setRedirect($query->getRedirect());

					return;
				}
			}

			$this->_helper->checkNotes();

			if ($this->_moduleHelper->isEnabled() && $this->getRequest()->isAjax()) {
				$navigation = $this->_view->getLayout()->getBlock('catalogsearch.leftnav');
				$products   = $this->_view->getLayout()->getBlock('search.result');
				$result     = ['products' => $products->toHtml(), 'navigation' => $navigation->toHtml()];
				$this->getResponse()->representJson($this->_jsonHelper->jsonEncode($result));
			} else {
				$this->_view->loadLayout();
				$this->_view->renderLayout();
			}
		} else {
			$this->getResponse()->setRedirect($this->_redirect->getRedirectUrl());
		}
	}
}