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<?php
/* --------------------------------------------------------------
   SlidersDetailsAjaxController.inc.php 2016-12-12
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2016 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

MainFactory::load_class('AdminHttpViewController');

/**
 * Class SlidersDetailsAjaxController
 *
 * AJAX controller the teaser slider edit page.
 *
 * @category System
 * @package  AdminHttpViewControllers
 */
class SlidersDetailsAjaxController extends AdminHttpViewController
{
    /**
     * @var SliderReadService
     */
    protected $sliderReadService;

    /**
     * @var SliderWriteService
     */
    protected $sliderWriteService;


    /**
     * Initialize Controller
     */
    public function init()
    {
        $this->sliderReadService  = StaticGXCoreLoader::getService('SliderRead');
        $this->sliderWriteService = StaticGXCoreLoader::getService('SliderWrite');
    }


    /**
     * Determines whether an image file is already in use.
     *
     * @return JsonHttpControllerResponse
     */
    public function actionCheckImageUsage()
    {
        $filename     = new FilenameStringType($this->_getQueryParameter('filename'));
        $isThumbnail  = $this->_getQueryParameter('is_thumbnail') === "true";

        if($isThumbnail)
        {
            $slideId = new IdType($this->_getQueryParameter('slide_id'));
            $isUsed  = $this->sliderReadService->isSlideThumbnailImageFileUsed($filename, $slideId);
        }
        else
        {
            $slideImageId = new IdType($this->_getQueryParameter('slide_image_id'));
            $isUsed       = $this->sliderReadService->isSlideImageFileUsed($filename, $slideImageId);
        }

        $response = ['isUsed' => (bool)$isUsed];

        return MainFactory::create('JsonHttpControllerResponse', $response);
    }


    /**
     * Performs the storing process of uploaded images file that have been sent via AJAX.
     *
     * @return JsonHttpControllerResponse Success response.
     * @throws InvalidArgumentException On invalid arguments.
     */
    public function actionUploadImages()
    {
        if(!isset($_FILES) || count($_FILES) === 0)
        {
            return MainFactory::create('JsonHttpControllerResponse', ['success' => true]);
        }

        foreach($_FILES as $key => $values)
        {
            for($i = 0, $imagesCount = count($values['tmp_name']); $i < $imagesCount; $i++)
            {
                $existingFile      = new ExistingFile(new NonEmptyStringType($values['tmp_name'][$i]));
                $preferredFilename = new FilenameStringType($values['name'][$i]);
                
                if($key === 'thumbnail_file_upload')
                {
                    $this->sliderWriteService->importSlideThumbnailImageFile($existingFile, $preferredFilename);
                }
                else
                {
                    $this->sliderWriteService->importSlideImageFile($existingFile, $preferredFilename);
                }
            }
        }

        return MainFactory::create('JsonHttpControllerResponse', ['success' => true]);
    }


    /**
     * Deletes slider images.
     *
     * @return JsonHttpControllerResponse
     */
    public function actionDeleteImages()
    {
        if($this->_getPostData('file_names') !== null && count($this->_getPostData('file_names')))
        {
            $fileNames = array_unique($this->_getPostData('file_names'));
        }
        else
        {
            $fileNames = [];
        }

        if($this->_getPostData('thumbnail_names') !== null && count($this->_getPostData('thumbnail_names')))
        {
            $thumbnailNames = array_unique($this->_getPostData('thumbnail_names'));
        }
        else
        {
            $thumbnailNames = [];
        }

        foreach($fileNames as $fileName)
        {
            $this->sliderWriteService->deleteSlideImageFile(new FilenameStringType($fileName));
        }

        foreach($thumbnailNames as $thumbnailName)
        {
            $this->sliderWriteService->deleteSlideThumbnailImageFile(new FilenameStringType($thumbnailName));
        }

        return MainFactory::create('JsonHttpControllerResponse', ['success' => true]);
    }
}