* cleanup

src/App/Action/GetGalleryImagesAction.php

@@ -20,8 +20,6 @@ class GetGalleryImagesAction implements ServerMiddlewareInterface
     public function process(ServerRequestInterface $request, DelegateInterface $delegate)
     {
         $slug = $request->getAttribute('slug', false);
-        return new JsonResponse([
-            'images' => $this->galleryService->getGallery($slug),
-        ]);
+        return new JsonResponse($this->galleryService->getGallery($slug));
     }
 }

src/App/Action/GetImageAction.php

@@ -6,7 +6,9 @@ use App\Service\GalleryService;
 use Interop\Http\ServerMiddleware\DelegateInterface;
 use Interop\Http\ServerMiddleware\MiddlewareInterface as ServerMiddlewareInterface;
 use Psr\Http\Message\ServerRequestInterface;
+use Zend\Diactoros\Response;
 use Zend\Diactoros\Response\JsonResponse;
+use Zend\Diactoros\Stream;
 
 class GetImageAction implements ServerMiddlewareInterface
 {
@@ -20,8 +22,21 @@ class GetImageAction implements ServerMiddlewareInterface
     public function process(ServerRequestInterface $request, DelegateInterface $delegate)
     {
         $slug = $request->getAttribute('slug', false);
-        return new JsonResponse([
-            'images' => $this->galleryService->getGallery($slug),
-        ]);
+        $image = $request->getAttribute('image', false);
+        $thumb = $request->getAttribute('thumb', false);
+
+        $imageFileName = $this->galleryService->getImage($slug, $image, $thumb);
+        $stream = new Stream(fopen($imageFileName, 'r'));
+        $response = new Response();
+        return $response
+            ->withHeader('Content-Type', (new \finfo(FILEINFO_MIME))->file($imageFileName))
+            ->withHeader('Content-Disposition', 'attachment; filename=' . basename($imageFileName))
+            ->withHeader('Content-Transfer-Encoding', 'Binary')
+            ->withHeader('Content-Description', 'File Transfer')
+            ->withHeader('Pragma', 'public')
+            ->withHeader('Expires', '0')
+            ->withHeader('Cache-Control', 'must-revalidate')
+            ->withBody($stream)
+            ->withHeader('Content-Length', "{$stream->getSize()}");
     }
 }

src/App/Action/ListGalleriesAction.php

@@ -19,8 +19,6 @@ class ListGalleriesAction implements ServerMiddlewareInterface
 
     public function process(ServerRequestInterface $request, DelegateInterface $delegate)
     {
-        return new JsonResponse([
-            'galleries' => $this->galleryService->listGalleries()
-        ]);
+        return new JsonResponse($this->galleryService->listGalleries());
     }
 }

src/App/Service/GalleryService.php

@@ -69,7 +69,7 @@ class GalleryService
             ? $galleryDir . $image
             : $this->getResizedImageName($galleryDir, $image, $size);
 
-        return fopen($imageFileName, 'r');
+        return $imageFileName;
     }
 
     protected function getResizedImageName($galleryDirectory, $imageName, $size)