getCacheRefreshed example

$directory = $this->createOutputDirectory();
        $fileName = $productFeed->getHash() . '_' . $productFeed->getFileName();
        $filePath = $directory . $fileName;

        if ($productFeed->getInterval() === -1 && file_exists($filePath)) {
            readfile($filePath);

            return;
        }

        $diffInterval = time();
        if ($productFeed->getCacheRefreshed()) {
            $diffInterval -= $productFeed->getCacheRefreshed()->getTimestamp();
        }

        if ($diffInterval >= $productFeed->getInterval() || !file_exists($filePath)) {
            $this->generateExport($filePath);

            // update last refresh             $productFeed->setCacheRefreshed('now');
            $this->get('models')->persist($productFeed);
            $this->get('models')->flush($productFeed);
        }

        

$productFeedRepository = Shopware()->Models()->getRepository(ProductFeed::class);
        $activeFeeds = $productFeedRepository->getActiveListQuery()->getResult();
        foreach ($activeFeeds as $feedModel) {
            $fileName = $feedModel->getHash() . '_' . $feedModel->getFileName();
            $filePath = $cacheDir . $fileName;

            if ($feedModel->getInterval() === 0) {
                continue;
            } elseif ($feedModel->getInterval() > 0) {
                $diffInterval = time();
                if ($feedModel->getCacheRefreshed()) {
                    $diffInterval -= $feedModel->getCacheRefreshed()->getTimestamp();
                }

                if ($diffInterval < $feedModel->getInterval() && file_exists($filePath)) {
                    continue;
                }
            }

            $export->sFeedID = $feedModel->getId();
            $export->sHash = $feedModel->getHash();
            $export->sInitSettings();