BookStack/app/Http/Controllers/ImageController.php
2015-08-29 15:03:42 +01:00

209 lines
6.5 KiB
PHP

<?php
namespace Oxbow\Http\Controllers;
use Illuminate\Filesystem\Filesystem as File;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Intervention\Image\Facades\Image as ImageTool;
use Illuminate\Support\Facades\DB;
use Oxbow\Http\Requests;
use Oxbow\Image;
class ImageController extends Controller
{
protected $image;
protected $file;
/**
* ImageController constructor.
* @param Image $image
* @param File $file
*/
public function __construct(Image $image, File $file)
{
$this->image = $image;
$this->file = $file;
parent::__construct();
}
/**
* Returns an image from behind the public-facing application.
* @param Request $request
* @return \Illuminate\Http\Response
*/
public function getImage(Request $request)
{
$cacheTime = 60 * 60 * 24;
$path = storage_path() . '/' . $request->path();
$modifiedTime = $this->file->lastModified($path);
$eTag = md5($modifiedTime . $path);
$headerLastModified = gmdate('r', $modifiedTime);
$headerExpires = gmdate('r', $modifiedTime + $cacheTime);
$headers = [
'Last-Modified' => $headerLastModified,
'Cache-Control' => 'must-revalidate',
'Pragma' => 'public',
'Expires' => $headerExpires,
'Etag' => $eTag
];
$browserModifiedSince = $request->header('If-Modified-Since');
$browserNoneMatch = $request->header('If-None-Match');
if ($browserModifiedSince !== null && file_exists($path) && ($browserModifiedSince == $headerLastModified || $browserNoneMatch == $eTag)) {
return response()->make('', 304, $headers);
}
if (file_exists($path)) {
return response()->make(file_get_contents($path), 200, array_merge($headers, [
'Content-Type' => $this->file->mimeType($path),
'Content-Length' => filesize($path),
]));
}
abort(404);
}
/**
* Get all images, Paginated
* @param int $page
* @return \Illuminate\Http\JsonResponse
*/
public function getAll($page = 0)
{
$pageSize = 30;
$images = DB::table('images')->orderBy('created_at', 'desc')
->skip($page * $pageSize)->take($pageSize)->get();
foreach ($images as $image) {
$image->thumbnail = $this->getThumbnail($image, 150, 150);
}
$hasMore = count(DB::table('images')->orderBy('created_at', 'desc')
->skip(($page + 1) * $pageSize)->take($pageSize)->get()) > 0;
return response()->json([
'images' => $images,
'hasMore' => $hasMore
]);
}
/**
* Get the thumbnail for an image.
* @param $image
* @param int $width
* @param int $height
* @return string
*/
public function getThumbnail($image, $width = 220, $height = 220)
{
$explodedPath = explode('/', $image->url);
array_splice($explodedPath, 4, 0, ['thumbs-' . $width . '-' . $height]);
$thumbPath = implode('/', $explodedPath);
$thumbFilePath = public_path() . $thumbPath;
// Return the thumbnail url path if already exists
if (file_exists($thumbFilePath)) {
return $thumbPath;
}
// Otherwise create the thumbnail
$thumb = ImageTool::make(public_path() . $image->url);
$thumb->fit($width, $height);
// Create thumbnail folder if it does not exist
if (!file_exists(dirname($thumbFilePath))) {
mkdir(dirname($thumbFilePath), 0775, true);
}
//Save Thumbnail
$thumb->save($thumbFilePath);
return $thumbPath;
}
/**
* Handles image uploads for use on pages.
* @param Request $request
* @return \Illuminate\Http\JsonResponse
*/
public function upload(Request $request)
{
$this->checkPermission('image-create');
$imageUpload = $request->file('file');
$name = str_replace(' ', '-', $imageUpload->getClientOriginalName());
$storageName = substr(sha1(time()), 0, 10) . '-' . $name;
$imagePath = '/uploads/images/' . Date('Y-m-M') . '/';
$storagePath = public_path() . $imagePath;
$fullPath = $storagePath . $storageName;
while (file_exists($fullPath)) {
$storageName = substr(sha1(rand()), 0, 3) . $storageName;
$fullPath = $storagePath . $storageName;
}
$imageUpload->move($storagePath, $storageName);
// Create and save image object
$this->image->name = $name;
$this->image->url = $imagePath . $storageName;
$this->image->created_by = Auth::user()->id;
$this->image->updated_by = Auth::user()->id;
$this->image->save();
$this->image->thumbnail = $this->getThumbnail($this->image, 150, 150);
return response()->json($this->image);
}
/**
* Update image details
* @param $imageId
* @param Request $request
* @return \Illuminate\Http\JsonResponse
*/
public function update($imageId, Request $request)
{
$this->checkPermission('image-update');
$this->validate($request, [
'name' => 'required|min:2|string'
]);
$image = $this->image->findOrFail($imageId);
$image->fill($request->all());
$image->save();
return response()->json($this->image);
}
/**
* Deletes an image and all thumbnail/image files
* @param $id
* @return \Illuminate\Http\JsonResponse
*/
public function destroy($id)
{
$this->checkPermission('image-delete');
$image = $this->image->findOrFail($id);
// Delete files
$folder = public_path() . dirname($image->url);
$fileName = basename($image->url);
// Delete thumbnails
foreach (glob($folder . '/*') as $file) {
if (is_dir($file)) {
$thumbName = $file . '/' . $fileName;
if (file_exists($file)) {
unlink($thumbName);
}
// Remove thumb folder if empty
if (count(glob($file . '/*')) === 0) {
rmdir($file);
}
}
}
// Delete file and database entry
unlink($folder . '/' . $fileName);
$image->delete();
// Delete parent folder if empty
if (count(glob($folder . '/*')) === 0) {
rmdir($folder);
}
return response()->json('Image Deleted');
}
}