UploadController.php

<?php

/*
 * Copyright (C) 2015 IRSTEA
 * All rights reserved.
 */

namespace Irstea\FileUploadBundle\Controller;

use Irstea\FileUploadBundle\Entity\UploadedFile;
use Irstea\FileUploadBundle\Http\UploadedFileResponse;
use Irstea\FileUploadBundle\Service\FileManagerInterface;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\Form\Extension\Csrf\CsrfProvider\CsrfProviderInterface;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\ResponseHeaderBag;
use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
use Symfony\Component\HttpKernel\Exception\HttpException;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\Routing\RouterInterface;

/**
 * @Route("/files", service="irstea_file_upload.upload_controller")
 */
class UploadController extends Controller
{
    const CSRF_READ_INTENTION = "uploaded_file_read";
    const CSRF_WRITE_INTENTION = "uploaded_file_write_%s";

    /**
     *
     * @var FileManagerInterface
     */
    protected $fileManager;

    /**
     *
     * @var RouterInterface
     */
    protected $router;

    /**
     * @var CsrfProviderInterface
     */
    protected $csrfProvider;

    /**
     *
     */
    public function __construct(FileManagerInterface $fileManager, RouterInterface $router, CsrfProviderInterface $csrfProvider)
    {
        $this->fileManager = $fileManager;
        $this->router = $router;
        $this->csrfProvider = $csrfProvider;
    }

    /**
     * @Route("", name="file_upload_create")
     * @Method("POST")
     * @param Request $request
     */
    public function createAction(Request $request)
    {
        $data = $request->request->get('file');

        $file = $this->fileManager->create(