test.php

<?php

namespace Fietsuniek\BaseConfig\Override\Cms\Model\Wysiwyg\Images;

use Magento\Cms\Model\Wysiwyg\Images\Storage as WysiwygImagesStorage;
/**
 * Override thumbs directory name .thumbs folder not accessible in youwe hosting environment
 *
 * @SuppressWarnings(PHPMD.LongVariable)
 * @SuppressWarnings(PHPMD.TooManyFields)
 * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
 *
 * @api
 * @since 100.0.2
 */
class Storage extends WysiwygImagesStorage
{

    const THUMBS_DIRECTORY_NAME = 'thumbs';


    /**
     * Construct
     *
     * @param \Magento\Backend\Model\Session $session
     * @param \Magento\Backend\Model\UrlInterface $backendUrl
     * @param \Magento\Cms\Helper\Wysiwyg\Images $cmsWysiwygImages
     * @param \Magento\MediaStorage\Helper\File\Storage\Database $coreFileStorageDb
     * @param \Magento\Framework\Filesystem $filesystem
     * @param \Magento\Framework\Image\AdapterFactory $imageFactory
     * @param \Magento\Framework\View\Asset\Repository $assetRepo
     * @param \Magento\Cms\Model\Wysiwyg\Images\Storage\CollectionFactory $storageCollectionFactory
     * @param \Magento\MediaStorage\Model\File\Storage\FileFactory $storageFileFactory
     * @param \Magento\MediaStorage\Model\File\Storage\DatabaseFactory $storageDatabaseFactory
     * @param \Magento\MediaStorage\Model\File\Storage\Directory\DatabaseFactory $directoryDatabaseFactory
     * @param \Magento\MediaStorage\Model\File\UploaderFactory $uploaderFactory
     * @param array $resizeParameters
     * @param array $extensions
     * @param array $dirs
     * @param array $data
     *
     * @throws \Magento\Framework\Exception\FileSystemException
     * @SuppressWarnings(PHPMD.ExcessiveParameterList)
     */
    public function __construct(
        \Magento\Backend\Model\Session $session,
        \Magento\Backend\Model\UrlInterface $backendUrl,
        \Magento\Cms\Helper\Wysiwyg\Images $cmsWysiwygImages,
        \Magento\MediaStorage\Helper\File\Storage\Database $coreFileStorageDb,
        \Magento\Framework\Filesystem $filesystem,
        \Magento\Framework\Image\AdapterFactory $imageFactory,
        \Magento\Framework\View\Asset\Repository $assetRepo,
        \Magento\Cms\Model\Wysiwyg\Images\Storage\CollectionFactory $storageCollectionFactory,
        \Magento\MediaStorage\Model\File\Storage\FileFactory $storageFileFactory,
        \Magento\MediaStorage\Model\File\Storage\DatabaseFactory $storageDatabaseFactory,
        \Magento\MediaStorage\Model\File\Storage\Directory\DatabaseFactory $directoryDatabaseFactory,
        \Magento\MediaStorage\Model\File\UploaderFactory $uploaderFactory,
        array $resizeParameters = [],
        array $extensions = [],
        array $dirs = [],
        array $data = []
    ) {
        parent::__construct(
            $session,
            $backendUrl,
            $cmsWysiwygImages,
            $coreFileStorageDb,
            $filesystem,
            $imageFactory,
            $assetRepo,
            $storageCollectionFactory,
            $storageFileFactory,
            $storageDatabaseFactory,
            $directoryDatabaseFactory,
            $uploaderFactory,
            $resizeParameters,
            $extensions,
            $dirs,
            $data
        );
    }

    public function getThumbnailUrl($filePath, $checkFile = false)
    {
        $mediaRootDir = $this->_cmsWysiwygImages->getStorageRoot();

        if (strpos($filePath, $mediaRootDir) === 0) {
            $thumbSuffix = self::THUMBS_DIRECTORY_NAME . substr($filePath, strlen($mediaRootDir));
            if (!$checkFile || $this->_directory->isExist(
                    $this->_directory->getRelativePath($mediaRootDir . '/' . $thumbSuffix)
                )
            ) {
                $thumbSuffix = substr(
                        $mediaRootDir,
                        strlen($this->_directory->getAbsolutePath())
                    ) . '/' . $thumbSuffix;
                $randomIndex = '?rand=' . time();
                return str_replace('\\', '/', $this->_cmsWysiwygImages->getBaseUrl() . $thumbSuffix) . $randomIndex;
            }
        }

        return false;
    }

    public function getThumbnailRoot()
    {
        return $this->_cmsWysiwygImages->getStorageRoot() . '/' . self::THUMBS_DIRECTORY_NAME;
    }

}