Magento 2 URL Rewrite – Product Attribute Filter URL Rewrite

I have to Create a Custom Module for product attribute filter URL rewrite.

registration.php

<?php

\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'Custom_Seo',
    __DIR__
);

module.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
    <module name="Custom_Seo" setup_version="1.0.0">
    </module>
</config>

create etc/di.xml file

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
      <preference for="Magento\UrlRewrite\Controller\Router" type="Custom\Seo\Controller\CustomRouter" />
</config>

Override

Magento\UrlRewrite\Controller\Router to Custom\Seo\Controller\CustomRouter

Controller/CustomRouter.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Custom\Seo\Controller;

use Magento\Framework\App\Request\Http as HttpRequest;
use Magento\Framework\App\Response\Http as HttpResponse;
use Magento\UrlRewrite\Controller\Adminhtml\Url\Rewrite;
use Magento\UrlRewrite\Model\OptionProvider;
use Magento\UrlRewrite\Model\UrlFinderInterface;
use Magento\UrlRewrite\Service\V1\Data\UrlRewrite;
use Magento\Framework\UrlInterface;
use Magento\Framework\App\Action\Redirect;
use Magento\Framework\App\ActionInterface;

/**
 * UrlRewrite Controller Router
 *
 * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
 */
class CustomRouter implements \Magento\Framework\App\RouterInterface
{
    /**
     * @var \Magento\Framework\App\ActionFactory
     */
    protected $actionFactory;

    /**
     * @var UrlInterface
     */
    protected $url;

    /**
     * @var \Magento\Store\Model\StoreManagerInterface
     */
    protected $storeManager;

    /**
     * @var \Magento\Framework\App\ResponseInterface|HttpResponse
     */
    protected $response;

    /**
     * @var \Magento\UrlRewrite\Model\UrlFinderInterface
     */
    protected $urlFinder;

    /**
     * @param \Magento\Framework\App\ActionFactory $actionFactory
     * @param UrlInterface $url
     * @param \Magento\Store\Model\StoreManagerInterface $storeManager
     * @param \Magento\Framework\App\ResponseInterface $response
     * @param UrlFinderInterface $urlFinder
     */
    public function __construct(
        \Magento\Framework\App\ActionFactory $actionFactory,
        UrlInterface $url,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Framework\App\ResponseInterface $response,
        UrlFinderInterface $urlFinder
    ) {
        $this->actionFactory = $actionFactory;
        $this->url = $url;
        $this->storeManager = $storeManager;
        $this->response = $response;
        $this->urlFinder = $urlFinder;
    }

    /**
     * Match corresponding URL Rewrite and modify request
     *
     * @param \Magento\Framework\App\RequestInterface|HttpRequest $request
     * @return ActionInterface|null
     */
    public function match(\Magento\Framework\App\RequestInterface $request)
    {


        //custom code
      if ($request->getModuleName() === 'catalog' || $request->getModuleName() === 'cms') {
        return;
          }
        $identifier = trim($request->getPathInfo(), '/');
        $urlKey_explode = explode('/', $identifier);

         if($urlKey_explode[0]=='services')
        {
            if (!isset($urlKey_explode[1])) {
              $urlKey_explode[1] = null;
              }
              $url_string = $urlKey_explode[1];
            //Instance of object manager
            $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
            $resource = $objectManager->get('Magento\Framework\App\ResourceConnection');
            $connection = $resource->getConnection();

            //category code
            $category_id = '';
            $category_flat_query = 'SELECT `entity_id`, `name` FROM `catalog_category_flat_store_1` WHERE is_active = 1 AND `parent_id` = 26 ORDER BY LENGTH(name) DESC';
            $category_flat_data = $connection->fetchAll($category_flat_query);
            foreach ($category_flat_data as $category_flat_data_val)
            {
                //format url
                $category_dynUrl = $this->formatUrlKey($category_flat_data_val['name']);

                if(strpos($url_string, $category_dynUrl) !== false){
                    $category_id .= $category_flat_data_val['entity_id'].',';
                    $url_string = str_replace($category_dynUrl, "-", $url_string);
                    break;
                }
                //get children  
                $category_child_flat_query = 'SELECT `entity_id`, `name` FROM `catalog_category_flat_store_1` WHERE is_active = 1 AND `parent_id` = '.$category_flat_data_val['entity_id'].' ORDER BY LENGTH(`name`) DESC';
                $category_child_flat_data = $connection->fetchAll($category_child_flat_query);
                foreach ($category_child_flat_data as $subcat){ 
                    $subcat['entity_id'];
                    $subcat['name'];

                    //format url
                    $category_dynUrl = $this->formatUrlKey($subcat['name']);   
                    if(strpos($url_string, $category_dynUrl) !== false){
                        $category_id .= $subcat['entity_id'].',';
                        $url_string = str_replace($category_dynUrl, "-", $url_string);
                        break;
                    }
                }
            }
            if (empty($category_id)) {
              $category_id = 26;
            }
            //end category code

            //manufacture code
            $manufacturerid = '';
            $sql = "SELECT 
                        eav_attribute_option_value.option_id  , eav_attribute_option_value.value
                    FROM 
                        eav_attribute_option_value  
                        join `eav_attribute_option` on `eav_attribute_option`.option_id = eav_attribute_option_value.option_id
                    WHERE 
                        eav_attribute_option.attribute_id = 83
                    group by 
                        eav_attribute_option_value.option_id";
            $result_has_options_attribute_option = $connection->fetchAll($sql);
            foreach ($result_has_options_attribute_option as $key => $value)
            {

                $manufactureattriburtname = $this->formatUrlKey($value['value']);
                if(strpos($url_string, $manufactureattriburtname) !== false){

                    $manufacturerid = $value['option_id'];
                    $url_string = str_replace($manufactureattriburtname, "-", $url_string);
                    break;
                }
            }
            //end manufacture code

            // product code
            $productid = '';
            $sqlproduct = "SELECT 
                        eav_attribute_option_value.option_id  , eav_attribute_option_value.value
                    FROM 
                        eav_attribute_option_value  
                        join `eav_attribute_option` on `eav_attribute_option`.option_id = eav_attribute_option_value.option_id
                    WHERE 
                        eav_attribute_option.attribute_id = 139
                    group by 
                        eav_attribute_option_value.option_id";
            $result_product_attribute = $connection->fetchAll($sqlproduct);
            foreach ($result_product_attribute as $key1 => $value1)
            {
                $productattriburtname = $this->formatUrlKey($value1['value']);
                if(strpos($url_string, $productattriburtname) !== false){

                    $productid = $value1['option_id'];
                    $url_string = str_replace($productattriburtname, "-", $url_string);
                    break;
                }
            }
            // end product code
            /*$manufacturerid = rtrim($manufacturerid,',');
            $category_id = rtrim($category_id,','); 
            $productid = rtrim($productid,',');*/

        $request->setModuleName('catalog')->
                  setControllerName('category')->
                  setActionName('view')->
                  setParam('manufacturer', $manufacturerid)->
                  setParam('product', $productid)->
                  setParam('id', $category_id);

        $request->setAlias(\Magento\Framework\Url::REWRITE_REQUEST_PATH_ALIAS, $identifier);

        return $this->actionFactory->create(
            'Magento\Framework\App\Action\Forward',
            ['request' => $request]
        );
        }
        //end custom code

        $rewrite = $this->getRewrite(
            $request->getPathInfo(),
            $this->storeManager->getStore()->getId()
        );
        if ($rewrite === null) {
            //No rewrite rule matching current URl found, continuing with
            //processing of this URL.
            return null;
        }
        if ($rewrite->getRedirectType()) {
            //Rule requires the request to be redirected to another URL
            //and cannot be processed further.
            return $this->processRedirect($request, $rewrite);
        }
        //Rule provides actual URL that can be processed by a controller.
        $request->setAlias(
            UrlInterface::REWRITE_REQUEST_PATH_ALIAS,
            $rewrite->getRequestPath()
        );
        $request->setPathInfo('/' . $rewrite->getTargetPath());
        return $this->actionFactory->create(
            \Magento\Framework\App\Action\Forward::class
        );
    }

     protected function formatUrlKey($str)
    {
        $urlKey = preg_replace('#[^0-9a-z]+#i', '-', $str);
        $urlKey = strtolower($urlKey);
        $urlKey = trim($urlKey, '-');
        return $urlKey;
    }
}


?>