BookStack/app/Http/Controllers/ImageController.php

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<?php
namespace Oxbow\Http\Controllers;
use Illuminate\Filesystem\Filesystem as File;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
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use Intervention\Image\Facades\Image as ImageTool;
use Illuminate\Support\Facades\DB;
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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;
}
/**
* 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);
}
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/**
* Get all images, Paginated
* @param int $page
* @return \Illuminate\Http\JsonResponse
*/
public function getAll($page = 0)
{
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$pageSize = 25;
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$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
]);
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}
/**
* 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('/', $image->url);
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array_splice($explodedPath, 4, 0, ['thumbs-' . $width . '-' . $height]);
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$thumbPath = implode('/', $explodedPath);
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$thumbFilePath = public_path() . $thumbPath;
// Return the thumbnail url path if already exists
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if(file_exists($thumbFilePath)) {
return $thumbPath;
}
// Otherwise create the thumbnail
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$thumb = ImageTool::make(public_path() . $image->url);
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$thumb->fit($width, $height);
// Create thumbnail folder if it does not exist
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if(!file_exists(dirname($thumbFilePath))) {
mkdir(dirname($thumbFilePath), 0775, true);
}
//Save Thumbnail
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$thumb->save($thumbFilePath);
return $thumbPath;
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}
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/**
* Handles image uploads for use on pages.
* @param Request $request
* @return \Illuminate\Http\JsonResponse
*/
public function upload(Request $request)
{
$imageUpload = $request->file('file');
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$name = str_replace(' ', '-', $imageUpload->getClientOriginalName());
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$storageName = substr(sha1(time()), 0, 10) . '-' . $name;
$imagePath = '/uploads/images/'.Date('Y-m-M').'/';
$storagePath = public_path(). $imagePath;
$fullPath = $storagePath . $storageName;
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while(file_exists($fullPath)) {
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$storageName = substr(sha1(rand()), 0, 3) . $storageName;
$fullPath = $storagePath . $storageName;
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}
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$imageUpload->move($storagePath, $storageName);
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// Create and save image object
$this->image->name = $name;
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$this->image->url = $imagePath . $storageName;
$this->image->created_by = Auth::user()->id;
$this->image->updated_by = Auth::user()->id;
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$this->image->save();
$this->image->thumbnail = $this->getThumbnail($this->image, 150, 150);
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return response()->json($this->image);
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}
}