show filesize and remaining time on download (#181)

* show filesize on download

backend/Controllers/DownloadController.php

@@ -91,7 +91,12 @@ class DownloadController
             'Content-Transfer-Encoding',
             'binary'
         );
-
+        if (isset($file['filesize'])) {
+            $streamedResponse->headers->set(
+                'Content-Length',
+                $file['filesize']
+            );
+        }
         // @codeCoverageIgnoreStart
         if (APP_ENV == 'development') {
             $streamedResponse->headers->set(
@@ -137,11 +142,11 @@ class DownloadController
     public function batchDownloadStart(Request $request, StreamedResponse $streamedResponse, TmpfsInterface $tmpfs)
     {
         $uniqid = (string) preg_replace('/[^0-9a-zA-Z_]/', '', (string) $request->input('uniqid'));
+        $file = $tmpfs->readStream($uniqid);
 
-        $streamedResponse->setCallback(function () use ($tmpfs, $uniqid) {
+        $streamedResponse->setCallback(function () use ($file, $tmpfs, $uniqid) {
             // @codeCoverageIgnoreStart
             set_time_limit(0);
-            $file = $tmpfs->readStream($uniqid);
             if ($file['stream']) {
                 while (! feof($file['stream'])) {
                     echo fread($file['stream'], 1024 * 8);
@@ -170,7 +175,12 @@ class DownloadController
             'Content-Transfer-Encoding',
             'binary'
         );
-
+        if (isset($file['filesize'])) {
+            $streamedResponse->headers->set(
+                'Content-Length',
+                $file['filesize']
+            );
+        }
         // close session so we can continue streaming, note: dev is single-threaded
         $this->session->save();
 

backend/Services/Storage/Filesystem.php

@@ -134,6 +134,7 @@ class Filesystem implements Service
         return [
             'filename' => $this->getBaseName($path),
             'stream' => $this->storage->readStream($path),
+            'filesize' => $this->storage->getSize($path),
         ];
     }
 

backend/Services/Tmpfs/Adapters/Tmpfs.php

@@ -62,10 +62,12 @@ class Tmpfs implements Service, TmpfsInterface
         $filename = $this->sanitizeFilename($filename);
 
         $stream = fopen($this->getPath().$filename, 'r');
+        $filesize = filesize($this->getPath().$filename);
 
         return [
             'filename' => $filename,
             'stream' => $stream,
+            'filesize' => $filesize,
         ];
     }