<?php

namespace Wallabag\GroupBundle\Controller;

use Pagerfanta\Adapter\DoctrineORMAdapter;
use Pagerfanta\Exception\OutOfRangeCurrentPageException;
use Pagerfanta\Pagerfanta;
use Strut\StrutBundle\Service\Sha256Salted;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Component\HttpFoundation\Response;
use Wallabag\GroupBundle\Entity\Group;
use Wallabag\GroupBundle\Entity\UserGroup;
use Wallabag\GroupBundle\Form\GroupType;
use Wallabag\GroupBundle\Form\NewGroupType;
use Wallabag\UserBundle\Entity\User;

/**
 * Group controller.
 */
class ManageController extends Controller
{
    /**
     * Lists all public Group entities.
     *
     * @Route("/{page}", requirements={"page" = "\d+"}, name="group_index", defaults={"page" = "1"})
     * @Method("GET")
     */
    public function indexAction($page = 1)
    {
        $em = $this->getDoctrine()->getManager();

        $groups = $em->getRepository('WallabagGroupBundle:Group')->findPublicGroups();

        $pagerAdapter = new DoctrineORMAdapter($groups->getQuery(), true, false);
        $pagerFanta = new Pagerfanta($pagerAdapter);
        $pagerFanta->setMaxPerPage(1);

        try {
            $pagerFanta->setCurrentPage($page);
        } catch (OutOfRangeCurrentPageException $e) {
            if ($page > 1) {
                return $this->redirect($this->generateUrl('group_index', ['page' => $pagerFanta->getNbPages()]), 302);
            }
        }

        return $this->render('WallabagGroupBundle:Manage:index.html.twig', array(
            'groups' => $pagerFanta,
            'currentPage' => $page,
        ));
    }

    /**
     * Creates a new Group entity.
     *
     * @Route("/new", name="group_new")
     * @Method({"GET", "POST"})
     */
    public function newAction(Request $request)
    {
        $group = new Group();

        $form = $this->createForm(NewGroupType::class, $group);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $em = $this->getDoctrine()->getManager();

            if ($group->getAcceptSystem() == Group::ACCESS_PASSWORD) {
                /** @var Sha256Salted $encoder */
                $encoder = $this->get('sha256salted_encoder');
                $password = $encoder->encodePassword($group->getPassword(), $this->getParameter('secret'));
                $group->setPassword($password);
            }

            $em->persist($group);

            $groupUser = new UserGroup($this->getUser(), $group, Group::ROLE_ADMIN);
            $groupUser->setAccepted(true);
            $em->persist($groupUser);
            $em->flush();

            $this->get('session')->getFlashBag()->add(
                'notice',
                $this->get('translator')->trans('flashes.group.notice.added', ['%name%' => $group->getName()])
            );

            return $this->redirectToRoute('group_edit', array('id' => $group->getId()));
        }

        return $this->render('WallabagGroupBundle:Manage:new.html.twig', array(
            'group' => $group,
            'form' => $form->createView(),
        ));
    }

    /**
     * Displays a form to edit an existing Group entity.
     *
     * @Route("/{id}/edit", name="group_edit")
     * @Method({"GET", "POST"})
     */
    public function editAction(Request $request, Group $group)
    {
        if ($this->getUser()->getGroupRoleForUser($group) < Group::ROLE_ADMIN) {
            $this->createAccessDeniedException();
        }

        $deleteForm = $this->createDeleteForm($group);
        $editForm = $this->createForm(GroupType::class, $group);
        $editForm->handleRequest($request);

        if ($editForm->isSubmitted() && $editForm->isValid()) {
            $em = $this->getDoctrine()->getManager();

            if ($group->getAcceptSystem() === Group::ACCESS_PASSWORD) {
                $encoder = $this->get('sha256salted_encoder');
                $password = $encoder->encodePassword($group->getPlainPassword(), $this->getParameter('secret'));
                $group->setPassword($password);
            }

            $em->persist($group);
            $em->flush();

            $this->get('session')->getFlashBag()->add(
                'notice',
                $this->get('translator')->trans('flashes.group.notice.updated', ['%name%' => $group->getName()])
            );

            return $this->redirectToRoute('group_edit', array('id' => $group->getId()));
        }

        return $this->render('WallabagGroupBundle:Manage:edit.html.twig', array(
            'group' => $group,
            'edit_form' => $editForm->createView(),
            'delete_form' => $deleteForm->createView(),
        ));
    }

    /**
     * Deletes a Group entity.
     *
     * @Route("/{id}", name="group_delete")
     * @Method("DELETE")
     */
    public function deleteAction(Request $request, Group $group)
    {
        $form = $this->createDeleteForm($group);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $this->get('session')->getFlashBag()->add(
                'notice',
                $this->get('translator')->trans('flashes.group.notice.deleted', ['%name%' => $group->getName()])
            );

            $em = $this->getDoctrine()->getManager();
            $em->remove($group);
            $em->flush();
        }

        return $this->redirectToRoute('group_index');
    }

    /**
     * Creates a form to delete a Group entity.
     *
     * @param Group $group The Group entity
     *
     * @return \Symfony\Component\Form\Form The form
     */
    private function createDeleteForm(Group $group)
    {
        return $this->createFormBuilder()
            ->setAction($this->generateUrl('group_delete', array('id' => $group->getId())))
            ->setMethod('DELETE')
            ->getForm()
        ;
    }

    /**
     * @Route("/group-user-exclude/{group}/{user}", name="group-user-exclude")
     *
     * @param Group $group
     * @param User  $user
     *
     * @return Response
     */
    public function excludeMemberAction(Group $group, User $user)
    {
        $logger = $this->get('logger');
        $logger->info('User '.$this->getUser()->getUsername().' wants to exclude user '.$user->getUsername().' from group '.$group->getName());

        if (!$this->getUser()->inGroup($group) || $this->getUser()->getGroupRoleForUser($group) < Group::ROLE_MANAGE_USERS) {
            $logger->info('User '.$this->getUser()->getUsername().' has not enough rights on group '.$group->getName().' to exclude user '.$user->getUsername());
            throw $this->createAccessDeniedException();
        }

        if ($user->inGroup($group) && $user->getGroupRoleForUser($group) < Group::ROLE_ADMIN) {
            $em = $this->getDoctrine()->getManager();

            $logger->info('Removing user '.$this->getUser()->getUsername().' from group '.$group->getName());
            $em->remove($this->getUser()->getUserGroupFromGroup($group));

            $em->flush();

            return $this->redirectToRoute('group-manage', ['group' => $group->getId()]);
        }
        throw $this->createAccessDeniedException();
    }
}