added per session chunk file name, fixed the move function for the result chunk file, updated readme

Author: Martin Kluska

readme.md

@@ -15,6 +15,12 @@ In your own controller create the `FileReceiver`, more in example.
 * Laravel 5+
 * [blueimp-file-upload](https://github.com/blueimp/jQuery-File-Upload) - partial support (simple chunked and single upload)
 
+## Features
+* **Chunked uploads**
+  uses **chunked writing** aswell to minimize the memory footprint
+* **Storing per Laravel Session to prevent overwrite**
+  all TMP files are stored with session token
+
 ## Basic documentation
 
 ### FileReceiver
@@ -136,7 +142,7 @@ Route::post('upload', 'UploadController@upload');
 - [ ] add more providers (like pbupload)
 - [ ] add facade for a quick usage with callback and custom response based on the handler
 - [ ] cron to delete uncompleted files
-- [ ] file per session (to support multiple)
+- [x] file per session (to support multiple)
 - [ ] add a config with custom storage location 
 - [ ] add an example project
 

src/Handler/AbstractHandler.php

@@ -3,6 +3,7 @@
 
 use Illuminate\Http\Request;
 use Illuminate\Http\UploadedFile;
+use Session;
 
 /**
  * The handler that will detect if we can continue the chunked upload
@@ -33,6 +34,34 @@ public function __construct(Request  $request, UploadedFile $file)
         $this->file = $file;
     }
 
+    /**
+     * Builds the chunk file name per session and the original name. You can
+     * provide custom aditional name at the end of the generated file name.
+     *
+     * @param string|null $aditionalName
+     *
+     * @return string
+     *
+     * @see UploadedFile::getClientOriginalName()
+     * @see Session::getId()
+     */
+    protected function createChunkFileName($aditionalName = null)
+    {
+        // prepare basic name structure
+        $array = [
+            $this->file->getClientOriginalName(),
+            Session::getId(),
+        ];
+
+        // add
+        if (!is_null($aditionalName)) {
+            $array[] = $aditionalName;
+        }
+
+        // build name
+        return implode("-", $array);
+    }
+
     /**
      * Returns the chunk file name for a storing the tmp file
      *

src/Handler/ContentRangeUploadHandler.php

@@ -135,11 +135,11 @@ public function getBytesTotal()
      *
      * @return string returns the original name with the part extension
      *
-     * @see UploadedFile::getClientOriginalName()
+     * @see createChunkFileName()
      */
     public function getChunkFileName()
     {
-        return $this->file->getClientOriginalName()."-".$this->bytesTotal.".part";
+        return $this->createChunkFileName($this->bytesTotal.".part");
     }
 
 }

src/Save/ChunkSave.php

@@ -119,7 +119,8 @@ protected function buildFullFileFromChunks($file)
     {
         $this->fullChunkFile = new UploadedFile(
             $file, $this->file->getClientOriginalName(), $this->file->getClientMimeType(),
-            filesize($file), $this->file->getError()
+            filesize($file), $this->file->getError(), true // we must pass the true as test to force the upload file
+        // to use a standart copy method, not move uploaded file
         );
     }