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<?php namespace BookStack\Uploads;
use BookStack\Auth\Permissions\PermissionService;
use BookStack\Entities\Page;
use Illuminate\Database\Eloquent\Builder;
use Symfony\Component\HttpFoundation\File\UploadedFile;
class ImageRepo
{
protected $image;
protected $imageService;
protected $restrictionService;
protected $page;
/**
* ImageRepo constructor.
* @param Image $image
* @param ImageService $imageService
* @param \BookStack\Auth\Permissions\PermissionService $permissionService
* @param \BookStack\Entities\Page $page
*/
public function __construct(
Image $image,
ImageService $imageService,
PermissionService $permissionService,
Page $page
) {
$this->image = $image;
$this->imageService = $imageService;
$this->restrictionService = $permissionService;
$this->page = $page;
}
/**
* Get an image with the given id.
* @param $id
* @return Image
*/
public function getById($id)
{
return $this->image->findOrFail($id);
}
/**
* Execute a paginated query, returning in a standard format.
* Also runs the query through the restriction system.
* @param $query
* @param int $page
* @param int $pageSize
* @param bool $filterOnPage
* @return array
*/
private function returnPaginated($query, $page = 1, $pageSize = 24)
{
$images = $query->orderBy('created_at', 'desc')->skip($pageSize * ($page - 1))->take($pageSize + 1)->get();
$hasMore = count($images) > $pageSize;
$returnImages = $images->take($pageSize);
$returnImages->each(function ($image) {
$this->loadThumbs($image);
});
return [
'images' => $returnImages,
'has_more' => $hasMore
];
}
/**
* Fetch a list of images in a paginated format, filtered by image type.
* Can be filtered by uploaded to and also by name.
* @param string $type
* @param int $page
* @param int $pageSize
* @param int $uploadedTo
* @param string|null $search
* @param callable|null $whereClause
* @return array
*/
public function getPaginatedByType(
string $type,
int $page = 0,
int $pageSize = 24,
int $uploadedTo = null,
string $search = null,
callable $whereClause = null
) {
$imageQuery = $this->image->newQuery()->where('type', '=', strtolower($type));
if ($uploadedTo !== null) {
$imageQuery = $imageQuery->where('uploaded_to', '=', $uploadedTo);
}
if ($search !== null) {
$imageQuery = $imageQuery->where('name', 'LIKE', '%' . $search . '%');
}
// Filter by page access
$imageQuery = $this->restrictionService->filterRelatedEntity('page', $imageQuery, 'images', 'uploaded_to');
if ($whereClause !== null) {
$imageQuery = $imageQuery->where($whereClause);
}
return $this->returnPaginated($imageQuery, $page, $pageSize);
}
/**
* Get paginated gallery images within a specific page or book.
* @param string $type
* @param string $filterType
* @param int $page
* @param int $pageSize
* @param int|null $uploadedTo
* @param string|null $search
* @return array
*/
public function getEntityFiltered(
string $type,
string $filterType = null,
int $page = 0,
int $pageSize = 24,
int $uploadedTo = null,
string $search = null
) {
$contextPage = $this->page->findOrFail($uploadedTo);
$parentFilter = null;
if ($filterType === 'book' || $filterType === 'page') {
$parentFilter = function (Builder $query) use ($filterType, $contextPage) {
if ($filterType === 'page') {
$query->where('uploaded_to', '=', $contextPage->id);
} elseif ($filterType === 'book') {
$validPageIds = $contextPage->book->pages()->get(['id'])->pluck('id')->toArray();
$query->whereIn('uploaded_to', $validPageIds);
}
};
}
return $this->getPaginatedByType($type, $page, $pageSize, null, $search, $parentFilter);
}
/**
* Save a new image into storage and return the new image.
* @param UploadedFile $uploadFile
* @param string $type
* @param int $uploadedTo
* @param int|null $resizeWidth
* @param int|null $resizeHeight
* @param bool $keepRatio
* @return Image
* @throws \BookStack\Exceptions\ImageUploadException
*/
public function saveNew(UploadedFile $uploadFile, $type, $uploadedTo = 0, int $resizeWidth = null, int $resizeHeight = null, bool $keepRatio = true)
{
$image = $this->imageService->saveNewFromUpload($uploadFile, $type, $uploadedTo, $resizeWidth, $resizeHeight, $keepRatio);
$this->loadThumbs($image);
return $image;
}
/**
* Save a drawing the the database;
* @param string $base64Uri
* @param int $uploadedTo
* @return Image
* @throws \BookStack\Exceptions\ImageUploadException
*/
public function saveDrawing(string $base64Uri, int $uploadedTo)
{
$name = 'Drawing-' . user()->getShortName(40) . '-' . strval(time()) . '.png';
$image = $this->imageService->saveNewFromBase64Uri($base64Uri, $name, 'drawio', $uploadedTo);
return $image;
}
/**
* Update the details of an image via an array of properties.
* @param Image $image
* @param array $updateDetails
* @return Image
* @throws \BookStack\Exceptions\ImageUploadException
* @throws \Exception
*/
public function updateImageDetails(Image $image, $updateDetails)
{
$image->fill($updateDetails);
$image->save();
$this->loadThumbs($image);
return $image;
}
/**
* Destroys an Image object along with its revisions, files and thumbnails.
* @param Image $image
* @return bool
* @throws \Exception
*/
public function destroyImage(Image $image = null)
{
if ($image) {
$this->imageService->destroy($image);
}
return true;
}
/**
* Destroy all images of a certain type.
* @param string $imageType
* @throws \Exception
*/
public function destroyByType(string $imageType)
{
$images = $this->image->where('type', '=', $imageType)->get();
foreach ($images as $image) {
$this->destroyImage($image);
}
}
/**
* Load thumbnails onto an image object.
* @param Image $image
* @throws \BookStack\Exceptions\ImageUploadException
* @throws \Exception
*/
protected function loadThumbs(Image $image)
{
$image->thumbs = [
'gallery' => $this->getThumbnail($image, 150, 150, false),
'display' => $this->getThumbnail($image, 1680, null, true)
];
}
/**
* Get the thumbnail for an image.
* If $keepRatio is true only the width will be used.
* Checks the cache then storage to avoid creating / accessing the filesystem on every check.
* @param Image $image
* @param int $width
* @param int $height
* @param bool $keepRatio
* @return string
* @throws \BookStack\Exceptions\ImageUploadException
* @throws \Exception
*/
protected function getThumbnail(Image $image, $width = 220, $height = 220, $keepRatio = false)
{
try {
return $this->imageService->getThumbnail($image, $width, $height, $keepRatio);
} catch (\Exception $exception) {
return null;
}
}
/**
* Get the raw image data from an Image.
* @param Image $image
* @return null|string
*/
public function getImageData(Image $image)
{
try {
return $this->imageService->getImageData($image);
} catch (\Exception $exception) {
return null;
}
}
/**
* Get the validation rules for image files.
* @return string
*/
public function getImageValidationRules()
{
return 'image_extension|no_double_extension|mimes:jpeg,png,gif,bmp,webp,tiff';
}
}