Reindexes Algolia products that have been modified since a specific date

gistfile1.txt

<?php
        use Magento\Framework\App\Bootstrap;
        
        /**
        * Reindexes Algolia products that have been modified since a specific date
        */
        require __DIR__ . '/../app/bootstrap.php';
        $bootstrap = Bootstrap::create(BP, $_SERVER);
        $objectManager = $bootstrap->getObjectManager();
        $state = $objectManager->get('\Magento\Framework\App\State');
        $state->setAreaCode('adminhtml');
        $resource = $objectManager->get('Magento\Framework\App\ResourceConnection');
        $connection = $resource->getConnection();
        $algoliaDataHelper = $objectManager->get('Algolia\AlgoliaSearch\Helper\Data');
        $algoliaHelper = $objectManager->get('Algolia\AlgoliaSearch\Helper\AlgoliaHelper');
        $ten = [];
        $count = 0;
         
         **********************
        /*** Config Values ***/
         **********************
         *
         *  $emailToNotifiyOnComplete = '';
         *
         *  $dateSince = '2022-04-19 14:42:53';
         *  $indexId = 1;
         *  $batchSize = 500;
         *
         ***********************
        /*** !Config Values ***/
         ***********************
          
        $query = "select * from catalog_product_entity where updated_at > '{$dateSince}' order by entity_id desc";
        $results = $connection->fetchAll($query);
        $i = 0;
        $algoliaEnable= [];
        foreach($results as $prod ){
                $i++;
                $algoliaEnable[] = $prod['entity_id'];
                if($i % $batchSize == 0){
                    $algoliaDataHelper->rebuildStoreProductIndex($indexId, $algoliaEnable);
                    $algoliaEnable = [];
                    $i = 0;
                    echo "\n Sent {$batchSize} : ".$i;
                }
        }
        
        if(count($algoliaEnable) > 0){
            $algoliaDataHelper->rebuildStoreProductIndex($indexId, $algoliaEnable);
        }
        
        if($emailToNotifiyOnComplete){
            $resultsCount = $results;
            mail($emailToNotifiyOnComplete, "Completed Algolia Indexing ID {$indexId} : {$resultsCount} Items");
        }       
       
       echo "done";
       die();