<?php

/*
 * Chill is a software for social workers
 *
 * Copyright (C) 2014-2015, Champs Libres Cooperative SCRLFS,
 * <http://www.champs-libres.coop>, <info@champs-libres.coop>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace Chill\ActivityBundle\Controller;

use Chill\MainBundle\Security\Authorization\AuthorizationHelper;
use Chill\PersonBundle\Privacy\PrivacyEvent;
use Psr\Log\LoggerInterface;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Security\Core\Role\Role;
use Chill\ActivityBundle\Entity\Activity;
use Chill\PersonBundle\Entity\Person;
use Chill\ActivityBundle\Form\ActivityType;

/**
 * Class ActivityController
 *
 * @package Chill\ActivityBundle\Controller
 */
class ActivityController extends AbstractController
{

    /**
     * @var EventDispatcherInterface
     */
    protected $eventDispatcher;

    /**
     * @var AuthorizationHelper
     */
    protected $authorizationHelper;

    /**
     * @var LoggerInterface
     */
    protected $logger;

    /**
     * ActivityController constructor.
     *
     * @param EventDispatcherInterface $eventDispatcher
     * @param AuthorizationHelper $authorizationHelper
     */
    public function __construct(
        EventDispatcherInterface $eventDispatcher,
        AuthorizationHelper $authorizationHelper,
        LoggerInterface $logger
    ) {
        $this->eventDispatcher = $eventDispatcher;
        $this->authorizationHelper = $authorizationHelper;
        $this->logger = $logger;
    }

    /**
     * Lists all Activity entities.
     *
     */
    public function listAction($person_id, Request $request)
    {
        $em = $this->getDoctrine()->getManager();
        $person = $em->getRepository('ChillPersonBundle:Person')->find($person_id);

        if ($person === NULL) {
            throw $this->createNotFoundException('Person not found');
        }

        $this->denyAccessUnlessGranted('CHILL_PERSON_SEE', $person);

        $reachableScopes = $this->authorizationHelper
            ->getReachableScopes($this->getUser(), new Role('CHILL_ACTIVITY_SEE'),
            $person->getCenter());

        $activities = $em->getRepository('ChillActivityBundle:Activity')
                ->findBy(
                      array('person' => $person, 'scope' => $reachableScopes),
                      array('date' => 'DESC')
                      );

        $event = new PrivacyEvent($person, array(
            'element_class' => Activity::class,
            'action' => 'list'
        ));
        $this->eventDispatcher->dispatch(PrivacyEvent::PERSON_PRIVACY_EVENT, $event);

        return $this->render('ChillActivityBundle:Activity:list.html.twig', array(
            'activities' => $activities,
            'person'   => $person
        ));
    }
    /**
     * Creates a new Activity entity.
     *
     */
    public function createAction($person_id, Request $request)
    {
        $em = $this->getDoctrine()->getManager();
        $person = $em->getRepository('ChillPersonBundle:Person')->find($person_id);

        if ($person === NULL) {
            throw $this->createNotFoundException('person not found');
        }

        $this->denyAccessUnlessGranted('CHILL_PERSON_SEE', $person);

        $entity = new Activity();
        $entity->setPerson($person);
        $form = $this->createCreateForm($entity, $person);
        $form->handleRequest($request);

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

            $this->denyAccessUnlessGranted('CHILL_ACTIVITY_CREATE', $entity,
                    'creation of this activity not allowed');

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

            $this->get('session')
                ->getFlashBag()
                ->add('success',
                    $this->get('translator')
                        ->trans('Success : activity created!')
                );

            return $this->redirect(
                $this->generateUrl('chill_activity_activity_show',
                array('id' => $entity->getId(), 'person_id' => $person_id)));
        }

        $this->get('session')
            ->getFlashBag()->add('danger',
                $this->get('translator')
                    ->trans('The form is not valid. The activity has not been created !')
            );

        return $this->render('ChillActivityBundle:Activity:new.html.twig', array(
            'entity' => $entity,
            'form'   => $form->createView(),
            'person' => $person
        ));
    }

    /**
     * Creates a form to create a Activity entity.
     *
     * @param Activity $entity The entity
     *
     * @return \Symfony\Component\Form\Form The form
     */
    private function createCreateForm(Activity $entity)
    {
        $form = $this->createForm(ActivityType::class, $entity,
              array(
                'action' => $this->generateUrl('chill_activity_activity_create', [
                    'person_id' => $entity->getPerson()->getId(),
                    ]),
                'method' => 'POST',
                'center' => $entity->getCenter(),
                'role'   => new Role('CHILL_ACTIVITY_CREATE')
            )
        );

        return $form;
    }

    /**
     * Displays a form to create a new Activity entity.
     *
     */
    public function newAction($person_id)
    {
        $em = $this->getDoctrine()->getManager();
        $person = $em->getRepository('ChillPersonBundle:Person')->find($person_id);

        if ($person === NULL){
            throw $this->createNotFoundException('Person not found');
        }

        $this->denyAccessUnlessGranted('CHILL_PERSON_SEE', $person);

        $entity = new Activity();
        $entity->setUser($this->get('security.token_storage')->getToken()->getUser());
        $entity->setPerson($person);
        $entity->setDate(new \DateTime('now'));

        $this->denyAccessUnlessGranted('CHILL_ACTIVITY_CREATE', $entity);

        $form   = $this->createCreateForm($entity, $person);

        return $this->render('ChillActivityBundle:Activity:new.html.twig', array(
            'person'   => $person,
            'entity' => $entity,
            'form'   => $form->createView(),
        ));
    }

    /**
     * Finds and displays a Activity entity.
     *
     */
    public function showAction($person_id, $id)
    {
        $em = $this->getDoctrine()->getManager();
        $person = $em->getRepository('ChillPersonBundle:Person')->find($person_id);

        if (!$person) {
            throw $this->createNotFoundException('person not found');
        }

        $this->denyAccessUnlessGranted('CHILL_PERSON_SEE', $person);

        $entity = $em->getRepository('ChillActivityBundle:Activity')->find($id);

        if (!$entity) {
            throw $this->createNotFoundException('Unable to find Activity entity.');
        }

        $this->denyAccessUnlessGranted('CHILL_ACTIVITY_SEE', $entity);

        $deleteForm = $this->createDeleteForm($id, $person);

        $event = new PrivacyEvent($person, array(
            'element_class' => Activity::class,
            'element_id' => $entity->getId(),
            'action' => 'show'
        ));
        $this->eventDispatcher->dispatch(PrivacyEvent::PERSON_PRIVACY_EVENT, $event);

        return $this->render('ChillActivityBundle:Activity:show.html.twig', array(
            'person'      => $person,
            'entity'      => $entity,
            'delete_form' => $deleteForm->createView(),
        ));
    }

    /**
     * Displays a form to edit an existing Activity entity.
     *
     */
    public function editAction($person_id, $id)
    {
        $em = $this->getDoctrine()->getManager();
        $person = $em->getRepository('ChillPersonBundle:Person')->find($person_id);

        if (!$person) {
            throw $this->createNotFoundException('person not found');
        }

        $this->denyAccessUnlessGranted('CHILL_PERSON_SEE', $person);

        $entity = $em->getRepository('ChillActivityBundle:Activity')->find($id);

        if (!$entity) {
            throw $this->createNotFoundException('Unable to find Activity entity.');
        }

        $this->denyAccessUnlessGranted('CHILL_ACTIVITY_UPDATE', $entity);

        $editForm = $this->createEditForm($entity);
        $deleteForm = $this->createDeleteForm($id, $person);

        $event = new PrivacyEvent($person, array(
            'element_class' => Activity::class,
            'element_id' => $entity->getId(),
            'action' => 'edit'
        ));
        $this->eventDispatcher->dispatch(PrivacyEvent::PERSON_PRIVACY_EVENT, $event);

        return $this->render('ChillActivityBundle:Activity:edit.html.twig', array(
            'entity'      => $entity,
            'edit_form'   => $editForm->createView(),
            'delete_form' => $deleteForm->createView(),
            'person' => $person
        ));
    }

    /**
    * Creates a form to edit a Activity entity.
    *
    * @param Activity $entity The entity
    *
    * @return \Symfony\Component\Form\Form The form
    */
    private function createEditForm(Activity $entity)
    {
        $form = $this->createForm(ActivityType::class, $entity, array(
            'action' => $this->generateUrl('chill_activity_activity_update',
                    array(
                        'id' => $entity->getId(),
                        'person_id' => $entity->getPerson()->getId()
                )),
            'method' => 'PUT',
            'center' => $entity->getCenter(),
            'role'   => new Role('CHILL_ACTIVITY_UPDATE')
        ));

        return $form;
    }
    /**
     * Edits an existing Activity entity.
     *
     */
    public function updateAction(Request $request, $person_id, $id)
    {
        $em = $this->getDoctrine()->getManager();

        $person = $em->getRepository('ChillPersonBundle:Person')->find($person_id);
        $entity = $em->getRepository('ChillActivityBundle:Activity')->find($id);

        if (!$entity) {
            throw $this->createNotFoundException('Unable to find Activity entity.');
        }

        $this->denyAccessUnlessGranted('CHILL_ACTIVITY_UPDATE', $entity);

        $deleteForm = $this->createDeleteForm($id, $person);
        $editForm = $this->createEditForm($entity);
        $editForm->handleRequest($request);

        $event = new PrivacyEvent($person, array(
            'element_class' => Activity::class,
            'element_id' => $entity->getId(),
            'action' => 'update'
        ));
        $this->eventDispatcher->dispatch(PrivacyEvent::PERSON_PRIVACY_EVENT, $event);

        if ($editForm->isValid()) {
            $em->flush();

            $this->get('session')
                ->getFlashBag()
                ->add('success',
                    $this->get('translator')
                        ->trans('Success : activity updated!')
                );

            return $this->redirect($this->generateUrl('chill_activity_activity_show', array('id' => $id, 'person_id' => $person_id)));
        }

        $this->get('session')
            ->getFlashBag()
            ->add('error',
                $this->get('translator')
                    ->trans('This form contains errors')
            );

        return $this->render('ChillActivityBundle:Activity:edit.html.twig', array(
            'person'      => $entity->getPerson(),
            'entity'      => $entity,
            'edit_form'   => $editForm->createView(),
            'delete_form' => $deleteForm->createView(),
        ));
    }

    /**
     * Deletes a Activity entity.
     *
     */
    public function deleteAction(Request $request, $id, $person_id)
    {
        $em = $this->getDoctrine()->getManager();

        /* @var $activity Activity */
        $activity = $em->getRepository('ChillActivityBundle:Activity')
              ->find($id);
        $person = $activity->getPerson();

        if (!$activity) {
            throw $this->createNotFoundException('Unable to find Activity entity.');
        }

        $this->denyAccessUnlessGranted('CHILL_ACTIVITY_DELETE', $activity);

        $form = $this->createDeleteForm($id, $person);

        if ($request->getMethod() === Request::METHOD_DELETE) {
            $form->handleRequest($request);

            if ($form->isValid()) {

                $this->logger->notice("An activity has been removed", array(
                   'by_user' => $this->getUser()->getUsername(),
                   'activity_id' => $activity->getId(),
                   'person_id' => $activity->getPerson()->getId(),
                   'comment' => $activity->getComment()->getComment(),
                   'scope_id' => $activity->getScope()->getId(),
                   'reasons_ids' => $activity->getReasons()
                      ->map(function ($ar) { return $ar->getId(); })
                      ->toArray(),
                   'type_id' => $activity->getType()->getId(),
                   'duration' => $activity->getDurationTime()->format('U'),
                   'date' => $activity->getDate()->format('Y-m-d'),
                   'attendee' => $activity->getAttendee()
                ));

                $em->remove($activity);
                $em->flush();

                $this->addFlash('success', $this->get('translator')
                      ->trans("The activity has been successfully removed."));

                return $this->redirect($this->generateUrl(
                  'chill_activity_activity_list', array(
                     'person_id' => $person_id
                  )));
            }
        }

        return $this->render('ChillActivityBundle:Activity:confirm_delete.html.twig', array(
           'activity' => $activity,
           'delete_form' => $form->createView()
        ));


    }

    /**
     * Creates a form to delete a Activity entity by id.
     *
     * @param mixed $id The entity id
     *
     * @return \Symfony\Component\Form\Form The form
     */
    private function createDeleteForm($id, $person)
    {
        return $this->createFormBuilder()
            ->setAction($this->generateUrl(
                'chill_activity_activity_delete',
                array('id' => $id, 'person_id' => $person->getId())))
            ->setMethod('DELETE')
            ->add('submit', SubmitType::class, array('label' => 'Delete'))
            ->getForm()
        ;
    }
}