/**
     * Function to register new user
     * @Route("/register", name="register")
     * @param Request $request
     * @param UserPasswordEncoderInterface $passwordEncoder
     * @param \Swift_Mailer $mailer
     * @return \Symfony\Component\HttpFoundation\Response
     * @throws \Exception
     */
    public function registerAction(Request $request, UserPasswordEncoderInterface $passwordEncoder, \Swift_Mailer $mailer)
    {
        $user = new User();

        $form = $this->createForm(UserType::class, $user);
        $form->handleRequest($request);

        // registration pass
        if ($form->isSubmitted() && $form->isValid() && $this->captchaverify($request->get('g-recaptcha-response'))) {

            $entityManager = $this->getDoctrine()->getManager();

            // find and set account type for new user
            $member = $entityManager->getRepository(AccountType::class)
                ->findOneBy(array('typeName' => 'Member'));
            $user->setAccountType($member);

            // encrypt password -> assign to user
            $password = $passwordEncoder->encodePassword($user, $user->getPlainPassword());
            $user->setPassword($password);

            // assign create account date
            $user->setJoinDate(new \DateTime);
            $user->setEnable(false);

            // generate and assign link for email confirmation
            $key = $this->getToken(50);
            $confirm = new Confirm($user, $key);

            // push data
            $entityManager->persist($user);
            $entityManager->persist($confirm);
            $entityManager->flush();

            // set-up email and send it to user
            $email = 'gargulec5218@gmail.com';
            $message = (new \Swift_Message(
                'Hello '. $user->getUsername()))
                ->setFrom($email)
                ->setTo($user->getEmail())
                ->setBody(
                    $this->renderView('emails/registration.html.twig', array(
                        'confirmLink' => $this->generateUrl('registrationConfirm',  array(
                            'confirmKey' => $key
                        ),
                            UrlGeneratorInterface::ABSOLUTE_URL)
                        )),
                    'text/html'
                );
            $mailer->send($message);

            return $this->render('security/confirm.html.twig', array(
                'confirmed' => 'no'
            ));
        }

        // bad captcha
        if($form->isSubmitted() &&  $form->isValid() && !$this->captchaverify($request->get('g-recaptcha-response'))){
            $this->addFlash(
                'error',
                'Captcha Require'
            );
        }

        // render registration page
        return $this->render('security/register.html.twig', array(
            'form' => $form->createView()
        ));
    }