<?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\MainBundle\Controller;

use Chill\MainBundle\Entity\Notification;
use Chill\MainBundle\Entity\User;
use Chill\MainBundle\Pagination\PaginatorFactory;
use Chill\MainBundle\Repository\NotificationRepository;
use Chill\MainBundle\Security\Authorization\NotificationVoter;
use Chill\MainBundle\Serializer\Model\Collection;
use Chill\MainBundle\Serializer\Model\Counter;
use Doctrine\ORM\EntityManagerInterface;
use RuntimeException;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\Security\Core\Exception\AccessDeniedException;
use Symfony\Component\Security\Core\Security;
use Symfony\Component\Serializer\SerializerInterface;
use UnexpectedValueException;

/**
 * @Route("/api/1.0/main/notification")
 */
class NotificationApiController
{
    private EntityManagerInterface $entityManager;

    private NotificationRepository $notificationRepository;

    private PaginatorFactory $paginatorFactory;

    private Security $security;

    private SerializerInterface $serializer;

    public function __construct(
        EntityManagerInterface $entityManager,
        NotificationRepository $notificationRepository,
        PaginatorFactory $paginatorFactory,
        Security $security,
        SerializerInterface $serializer
    ) {
        $this->entityManager = $entityManager;
        $this->notificationRepository = $notificationRepository;
        $this->paginatorFactory = $paginatorFactory;
        $this->security = $security;
        $this->serializer = $serializer;
    }

    /**
     * @Route("/{id}/mark/read", name="chill_api_main_notification_mark_read", methods={"POST"})
     */
    public function markAsRead(Notification $notification): JsonResponse
    {
        return $this->markAs('read', $notification);
    }

    /**
     * @Route("/{id}/mark/unread", name="chill_api_main_notification_mark_unread", methods={"POST"})
     */
    public function markAsUnread(Notification $notification): JsonResponse
    {
        return $this->markAs('unread', $notification);
    }

    /**
     * @Route("/my/unread")
     */
    public function myUnreadNotifications(Request $request): JsonResponse
    {
        $total = $this->notificationRepository->countUnreadByUser($this->security->getUser());

        if ($request->query->getBoolean('countOnly')) {
            return new JsonResponse(
                $this->serializer->serialize(new Counter($total), 'json', ['groups' => ['read']]),
                JsonResponse::HTTP_OK,
                [],
                true
            );
        }
        $paginator = $this->paginatorFactory->create($total);
        $notifications = $this->notificationRepository->findUnreadByUser(
            $this->security->getUser(),
            $paginator->getItemsPerPage(),
            $paginator->getCurrentPageFirstItemNumber()
        );
        $collection = new Collection($notifications, $paginator);

        return new JsonResponse(
            $this->serializer->serialize($collection, 'json', ['groups' => ['read']]),
            JsonResponse::HTTP_OK,
            [],
            true
        );
    }

    private function markAs(string $target, Notification $notification): JsonResponse
    {
        if (!$this->security->isGranted(NotificationVoter::NOTIFICATION_TOGGLE_READ_STATUS, $notification)) {
            throw new AccessDeniedException('Not allowed to toggle read status of notification');
        }

        $user = $this->security->getUser();

        if (!$user instanceof User) {
            throw new RuntimeException('not possible to mark as read by this user');
        }

        switch ($target) {
            case 'read':
                $notification->markAsReadBy($user);

                break;

            case 'unread':
                $notification->markAsUnreadBy($user);

                break;

            default:
                throw new UnexpectedValueException("target not supported: {$target}");
        }

        $this->entityManager->flush();

        return new JsonResponse(null, JsonResponse::HTTP_ACCEPTED, [], false);
    }
}