<?php

/*
 * This file is part of the FOSUserBundle package.
 *
 * (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace FOS\UserBundle\Controller;

use Symfony\Component\DependencyInjection\ContainerAware;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
use FOS\UserBundle\Model\UserInterface;

/**
 * Controller managing the resetting of the password
 *
 * @author Thibault Duplessis <thibault.duplessis@gmail.com>
 * @author Christophe Coevoet <stof@notk.org>
 */
class ResettingController extends ContainerAware
{
    /**
     * Request reset user password: show form
     */
    public function requestAction()
    {
        return $this->container->get('templating')->renderResponse('FOSUserBundle:Resetting:request.html.'.$this->getEngine());
    }

    /**
     * Request reset user password: submit form and send email
     */
    public function sendEmailAction()
    {
        $username = $this->container->get('request')->request->get('username');

        $user = $this->container->get('fos_user.user_manager')->findUserByUsernameOrEmail($username);

        if (null === $user){
            return $this->container->get('templating')->renderResponse('FOSUserBundle:Resetting:request.html.'.$this->getEngine(), array('invalid_username' => $username));
        }

        if ($user->isPasswordRequestNonExpired($this->container->getParameter('fos_user.resetting.token_ttl'))) {
            return $this->container->get('templating')->renderResponse('FOSUserBundle:Resetting:passwordAlreadyRequested.html.'.$this->getEngine());
        }

        $user->generateConfirmationToken();
        $this->container->get('session')->set('fos_user_send_resetting_email/email', $user->getEmail());
        $this->container->get('fos_user.mailer')->sendResettingEmailMessage($user);
        $user->setPasswordRequestedAt(new \DateTime());
        $this->container->get('fos_user.user_manager')->updateUser($user);

        return new RedirectResponse($this->container->get('router')->generate('fos_user_resetting_check_email'));
    }

    /**
     * Tell the user to check his email provider
     */
    public function checkEmailAction()
    {
        $session = $this->container->get('session');
        $email = $session->get('fos_user_send_resetting_email/email');
        $session->remove('fos_user_send_resetting_email/email');
        $user = $this->container->get('fos_user.user_manager')->findUserByEmail($email);
        if (empty($user)) {
            return new RedirectResponse($this->container->get('router')->generate('fos_user_resetting_request'));
        }

        return $this->container->get('templating')->renderResponse('FOSUserBundle:Resetting:checkEmail.html.'.$this->getEngine(), array(
            'user' => $user,
        ));
    }

    /**
     * Reset user password
     */
    public function resetAction($token)
    {
        $user = $this->container->get('fos_user.user_manager')->findUserByConfirmationToken($token);

        if (null === $user){
            throw new NotFoundHttpException(sprintf('The user with "confirmation token" does not exist for value "%s"', $token));
        }

        if (!$user->isPasswordRequestNonExpired($this->container->getParameter('fos_user.resetting.token_ttl'))) {
            return new RedirectResponse($this->container->get('router')->generate('fos_user_resetting_request'));
        }

        $form = $this->container->get('fos_user.resetting.form');
        $formHandler = $this->container->get('fos_user.resetting.form.handler');
        $process = $formHandler->process($user);

        if ($process) {
            $this->authenticateUser($user);

            $this->setFlash('fos_user_success', 'resetting.flash.success');

            return new RedirectResponse($this->getRedirectionUrl($user));
        }

        return $this->container->get('templating')->renderResponse('FOSUserBundle:Resetting:reset.html.'.$this->getEngine(), array(
            'token' => $token,
            'form' => $form->createView(),
            'theme' => $this->container->getParameter('fos_user.template.theme'),
        ));
    }

    /**
     * Authenticate a user with Symfony Security
     *
     * @param UserInterface $user
     */
    protected function authenticateUser(UserInterface $user)
    {
        $providerKey = $this->container->getParameter('fos_user.firewall_name');
        $token = new UsernamePasswordToken($user, null, $providerKey, $user->getRoles());

        $this->container->get('security.context')->setToken($token);
    }

    /**
     * Generate the redirection url when the resetting is completed.
     *
     * @param UserInterface $user
     * @return string
     */
    protected function getRedirectionUrl(UserInterface $user)
    {
        return $this->container->get('router')->generate('fos_user_profile_show');
    }

    protected function setFlash($action, $value)
    {
        $this->container->get('session')->setFlash($action, $value);
    }

    protected function getEngine()
    {
        return $this->container->getParameter('fos_user.template.engine');
    }
}