<?php

/**
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Chill\CalendarBundle\Controller;

use Chill\CalendarBundle\Entity\Calendar;
use Chill\CalendarBundle\Form\CalendarType;
use Chill\CalendarBundle\RemoteCalendar\Connector\RemoteCalendarConnectorInterface;
use Chill\CalendarBundle\Repository\CalendarACLAwareRepositoryInterface;
use Chill\CalendarBundle\Repository\CalendarRepository;
use Chill\MainBundle\Entity\User;
use Chill\MainBundle\Pagination\PaginatorFactory;
use Chill\MainBundle\Repository\UserRepository;
use Chill\MainBundle\Templating\Listing\FilterOrderHelper;
use Chill\MainBundle\Templating\Listing\FilterOrderHelperFactoryInterface;
use Chill\PersonBundle\Entity\AccompanyingPeriod;
use Chill\PersonBundle\Entity\Person;
use Chill\ThirdPartyBundle\Entity\ThirdParty;
use DateTimeImmutable;
use Exception;
use Psr\Log\LoggerInterface;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Form\Form;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\UnauthorizedHttpException;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\Serializer\SerializerInterface;

class CalendarController extends AbstractController
{
    private CalendarACLAwareRepositoryInterface $calendarACLAwareRepository;

    private CalendarRepository $calendarRepository;

    private FilterOrderHelperFactoryInterface $filterOrderHelperFactory;

    private LoggerInterface $logger;

    private PaginatorFactory $paginator;

    private RemoteCalendarConnectorInterface $remoteCalendarConnector;

    private SerializerInterface $serializer;

    private UserRepository $userRepository;

    public function __construct(
        CalendarRepository $calendarRepository,
        CalendarACLAwareRepositoryInterface $calendarACLAwareRepository,
        FilterOrderHelperFactoryInterface $filterOrderHelperFactory,
        LoggerInterface $logger,
        PaginatorFactory $paginator,
        RemoteCalendarConnectorInterface $remoteCalendarConnector,
        SerializerInterface $serializer,
        UserRepository $userRepository
    ) {
        $this->calendarRepository = $calendarRepository;
        $this->calendarACLAwareRepository = $calendarACLAwareRepository;
        $this->filterOrderHelperFactory = $filterOrderHelperFactory;
        $this->logger = $logger;
        $this->paginator = $paginator;
        $this->remoteCalendarConnector = $remoteCalendarConnector;
        $this->serializer = $serializer;
        $this->userRepository = $userRepository;
    }

    /**
     * Delete a calendar item.
     *
     * @Route("/{_locale}/calendar/{id}/delete", name="chill_calendar_calendar_delete")
     */
    public function deleteAction(Request $request, Calendar $entity)
    {
        $view = null;
        $em = $this->getDoctrine()->getManager();

        $accompanyingPeriod = $entity->getAccompanyingPeriod();
        $user = null; // TODO legacy code ? remove it ?

        if ($accompanyingPeriod instanceof AccompanyingPeriod) {
            $view = '@ChillCalendar/Calendar/confirm_deleteByAccompanyingCourse.html.twig';
        } elseif ($user instanceof User) {
            $view = '@ChillCalendar/Calendar/confirm_deleteByUser.html.twig';
        }

        $form = $this->createDeleteForm($entity->getId(), $user, $accompanyingPeriod);

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

            if ($form->isValid()) {
                $this->logger->notice('A calendar event has been removed', [
                    'by_user' => $this->getUser()->getUsername(),
                    'calendar_id' => $entity->getId(),
                ]);

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

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

                $params = $this->buildParamsToUrl($user, $accompanyingPeriod);

                return $this->redirectToRoute('chill_calendar_calendar_list_by_period', $params);
            }
        }

        if (null === $view) {
            throw $this->createNotFoundException('Template not found');
        }

        return $this->render($view, [
            'calendar' => $entity,
            'delete_form' => $form->createView(),
            'accompanyingCourse' => $accompanyingPeriod,
        ]);
    }

    /**
     * Edit a calendar item.
     *
     * @Route("/{_locale}/calendar/calendar/{id}/edit", name="chill_calendar_calendar_edit")
     */
    public function editAction(Calendar $entity, Request $request): Response
    {
        if (!$this->remoteCalendarConnector->isReady()) {
            return $this->remoteCalendarConnector->getMakeReadyResponse($request->getUri());
        }

        $view = null;
        $em = $this->getDoctrine()->getManager();

        [$user, $accompanyingPeriod] = $this->getEntity($request);

        if ($accompanyingPeriod instanceof AccompanyingPeriod) {
            $view = '@ChillCalendar/Calendar/editByAccompanyingCourse.html.twig';
        } elseif ($user instanceof User) {
            throw new Exception('to analyze');
            $view = '@ChillCalendar/Calendar/editByUser.html.twig';
        }

        $form = $this->createForm(CalendarType::class, $entity);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $em->flush();

            $this->addFlash('success', $this->get('translator')->trans('Success : calendar item updated!'));

            $params = $this->buildParamsToUrl($user, $accompanyingPeriod);

            return $this->redirectToRoute('chill_calendar_calendar_list_by_period', $params);
        }

        if ($form->isSubmitted() && !$form->isValid()) {
            $this->addFlash('error', $this->get('translator')->trans('This form contains errors'));
        }

        $deleteForm = $this->createDeleteForm($entity->getId(), $user, $accompanyingPeriod);

        if (null === $view) {
            throw $this->createNotFoundException('Template not found');
        }

        $entity_array = $this->serializer->normalize($entity, 'json', ['groups' => 'read']);

        return $this->render($view, [
            'entity' => $entity,
            'form' => $form->createView(),
            'delete_form' => $deleteForm->createView(),
            'accompanyingCourse' => $accompanyingPeriod,
            //            'user' => $user,
            'entity_json' => $entity_array,
        ]);
    }

    /**
     * Lists all Calendar entities.
     *
     * @Route("/{_locale}/calendar/calendar/by-period/{id}", name="chill_calendar_calendar_list_by_period")
     */
    public function listActionByCourse(AccompanyingPeriod $accompanyingPeriod): Response
    {
        $filterOrder = $this->buildListFilterOrder();
        ['from' => $from, 'to' => $to] = $filterOrder->getDateRangeData('startDate');

        $total = $this->calendarACLAwareRepository
            ->countByAccompanyingPeriod($accompanyingPeriod, $from, $to);
        $paginator = $this->paginator->create($total);
        $calendarItems = $this->calendarACLAwareRepository->findByAccompanyingPeriod(
            $accompanyingPeriod,
            $from,
            $to,
            ['startDate' => 'DESC'],
            $paginator->getCurrentPageFirstItemNumber(),
            $paginator->getItemsPerPage()
        );

        return $this->render('@ChillCalendar/Calendar/listByAccompanyingCourse.html.twig', [
            'calendarItems' => $calendarItems,
            'accompanyingCourse' => $accompanyingPeriod,
            'paginator' => $paginator,
            'filterOrder' => $filterOrder,
        ]);
    }

    /**
     * @Route("/{_locale}/calendar/calendar/my", name="chill_calendar_calendar_list_my")
     */
    public function myCalendar(Request $request): Response
    {
        $this->denyAccessUnlessGranted('ROLE_USER');

        if (!$this->remoteCalendarConnector->isReady()) {
            return $this->remoteCalendarConnector->getMakeReadyResponse($request->getUri());
        }

        if (!$this->getUser() instanceof User) {
            throw new UnauthorizedHttpException('you are not an user');
        }

        $view = '@ChillCalendar/Calendar/listByUser.html.twig';

        return $this->render($view, [
            'user' => $this->getUser(),
        ]);
    }

    /**
     * Create a new calendar item.
     *
     * @Route("/{_locale}/calendar/calendar/new", name="chill_calendar_calendar_new")
     */
    public function newAction(Request $request): Response
    {
        if (!$this->remoteCalendarConnector->isReady()) {
            return $this->remoteCalendarConnector->getMakeReadyResponse($request->getUri());
        }

        $view = null;
        $em = $this->getDoctrine()->getManager();

        [$user, $accompanyingPeriod] = $this->getEntity($request);

        if ($accompanyingPeriod instanceof AccompanyingPeriod) {
            $view = '@ChillCalendar/Calendar/newByAccompanyingCourse.html.twig';
        }
        // elseif ($user instanceof User) {
        //     $view = '@ChillCalendar/Calendar/newUser.html.twig';
        // }

        $entity = new Calendar();

        if ($request->query->has('mainUser')) {
            $entity->setMainUser($this->userRepository->find($request->query->getInt('mainUser')));
        }

        // if ($user instanceof User) {
        //     $entity->setPerson($user);
        // }

        if ($accompanyingPeriod instanceof AccompanyingPeriod) {
            $entity->setAccompanyingPeriod($accompanyingPeriod);
        }

        $form = $this->createForm(CalendarType::class, $entity);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $em->persist($entity);
            $em->flush();

            $this->addFlash('success', $this->get('translator')->trans('Success : calendar item created!'));

            $params = $this->buildParamsToUrl($user, $accompanyingPeriod);

            return $this->redirectToRoute('chill_calendar_calendar_list_by_period', $params);
        }

        if ($form->isSubmitted() && !$form->isValid()) {
            $this->addFlash('error', $this->get('translator')->trans('This form contains errors'));
        }

        if (null === $view) {
            throw $this->createNotFoundException('Template not found');
        }

        $entity_array = $this->serializer->normalize($entity, 'json', ['groups' => 'read']);

        return $this->render($view, [
            'user' => $user,
            'accompanyingCourse' => $accompanyingPeriod,
            'entity' => $entity,
            'form' => $form->createView(),
            'entity_json' => $entity_array,
        ]);
    }

    /**
     * @Route("/{_locale}/calendar/calendar/{id}/to-activity", name="chill_calendar_calendar_to_activity")
     */
    public function toActivity(Request $request, Calendar $calendar): RedirectResponse
    {
        $personsId = array_map(
            static fn (Person $p): int => $p->getId(),
            $calendar->getPersons()->toArray()
        );

        $professionalsId = array_map(
            static fn (ThirdParty $thirdParty): ?int => $thirdParty->getId(),
            $calendar->getProfessionals()->toArray()
        );

        $usersId = array_map(
            static fn (User $user): ?int => $user->getId(),
            array_merge($calendar->getUsers()->toArray(), [$calendar->getMainUser()])
        );

        $durationTime = $calendar->getEndDate()->diff($calendar->getStartDate());
        $durationTimeInMinutes = $durationTime->days * 1440 + $durationTime->h * 60 + $durationTime->i;

        $activityData = [
            'calendarId' => $calendar->getId(),
            'personsId' => $personsId,
            'professionalsId' => $professionalsId,
            'usersId' => $usersId,
            'date' => $calendar->getStartDate()->format('Y-m-d'),
            'durationTime' => $durationTimeInMinutes,
            'location' => $calendar->getLocation() ? $calendar->getLocation()->getId() : null,
            'comment' => $calendar->getComment()->getComment(),
        ];

        return $this->redirectToRoute(
            'chill_activity_activity_new',
            [
                'accompanying_period_id' => $calendar->getAccompanyingPeriod()->getId(),
                'activityData' => $activityData,
                'returnPath' => $request->query->get('returnPath', null),
            ]
        );
    }

    /**
     * Show a calendar item.
     *
     * @Route("/{_locale}/calendar/calendar/{id}/show", name="chill_calendar_calendar_show")
     */
    public function showAction(Request $request, int $id): Response
    {
        $view = null;
        $em = $this->getDoctrine()->getManager();

        [$user, $accompanyingPeriod] = $this->getEntity($request);

        if ($accompanyingPeriod instanceof AccompanyingPeriod) {
            $view = '@ChillCalendar/Calendar/showByAccompanyingCourse.html.twig';
        } elseif ($user instanceof User) {
            $view = '@ChillCalendar/Calendar/showByUser.html.twig';
        }

        if (null === $view) {
            throw $this->createNotFoundException('Template not found');
        }

        /** @var Calendar $entity */
        $entity = $em->getRepository(\Chill\CalendarBundle\Entity\Calendar::class)->find($id);

        if (null === $entity) {
            throw $this->createNotFoundException('Unable to find Calendar entity.');
        }

        if (null !== $accompanyingPeriod) {
            // @TODO: These properties are declared dynamically.
            // It must be removed.
            // @See https://wiki.php.net/rfc/deprecate_dynamic_properties
            $entity->personsAssociated = $entity->getPersonsAssociated();
            $entity->personsNotAssociated = $entity->getPersonsNotAssociated();
        }

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

        $personsId = array_map(
            static fn (Person $p): int => $p->getId(),
            $entity->getPersons()->toArray()
        );

        $professionalsId = array_map(
            static fn (ThirdParty $thirdParty): ?int => $thirdParty->getId(),
            $entity->getProfessionals()->toArray()
        );

        $durationTime = $entity->getEndDate()->diff($entity->getStartDate());
        $durationTimeInMinutes = $durationTime->days * 1440 + $durationTime->h * 60 + $durationTime->i;

        $activityData = [
            'calendarId' => $id,
            'personsId' => $personsId,
            'professionalsId' => $professionalsId,
            'date' => $entity->getStartDate()->format('Y-m-d'),
            'durationTime' => $durationTimeInMinutes,
            'location' => $entity->getLocation() ? $entity->getLocation()->getId() : null,
            'comment' => $entity->getComment()->getComment(),
        ];

        return $this->render($view, [
            'accompanyingCourse' => $accompanyingPeriod,
            'entity' => $entity,
            'user' => $user,
            'activityData' => $activityData,
            //'delete_form' => $deleteForm->createView(),
        ]);
    }

    private function buildListFilterOrder(): FilterOrderHelper
    {
        $filterOrder = $this->filterOrderHelperFactory->create(self::class);
        $filterOrder->addDateRange('startDate', 'chill_calendar.start date filter', new DateTimeImmutable('3 days ago'), null);

        return $filterOrder->build();
    }

    private function buildParamsToUrl(?User $user, ?AccompanyingPeriod $accompanyingPeriod): array
    {
        $params = [];

        if (null !== $user) {
            $params['user_id'] = $user->getId();
        }

        if (null !== $accompanyingPeriod) {
            $params['id'] = $accompanyingPeriod->getId();
        }

        return $params;
    }

    /**
     * Creates a form to delete a Calendar entity by id.
     */
    private function createDeleteForm(int $id, ?User $user, ?AccompanyingPeriod $accompanyingPeriod): FormInterface
    {
        $params = $this->buildParamsToUrl($user, $accompanyingPeriod);
        $params['id'] = $id;

        return $this->createFormBuilder()
            ->setAction($this->generateUrl('chill_calendar_calendar_delete', $params))
            ->setMethod('DELETE')
            ->add('submit', SubmitType::class, ['label' => 'Delete'])
            ->getForm();
    }

    private function getEntity(Request $request): array
    {
        $em = $this->getDoctrine()->getManager();
        $user = $accompanyingPeriod = null;

        if ($request->query->has('user_id')) {
            $user_id = $request->get('user_id');
            $user = $em->getRepository(User::class)->find($user_id);

            if (null === $user) {
                throw $this->createNotFoundException('User not found');
            }

            // TODO Add permission
            // $this->denyAccessUnlessGranted('CHILL_PERSON_SEE', $user);
        } elseif ($request->query->has('accompanying_period_id')) {
            $accompanying_period_id = $request->get('accompanying_period_id');
            $accompanyingPeriod = $em->getRepository(AccompanyingPeriod::class)->find($accompanying_period_id);

            if (null === $accompanyingPeriod) {
                throw $this->createNotFoundException('Accompanying Period not found');
            }

            // TODO Add permission
            // $this->denyAccessUnlessGranted('CHILL_PERSON_SEE', $person);
        } else {
            throw $this->createNotFoundException('Person or Accompanying Period not found');
        }

        return [
            $user, $accompanyingPeriod,
        ];
    }
}