<?php

declare(strict_types=1);

/*
 * 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.
 */

namespace Chill\MainBundle\Controller;

use Chill\MainBundle\Entity\User;
use Chill\MainBundle\Entity\Workflow\EntityWorkflow;
use Chill\MainBundle\Pagination\PaginatorFactory;
use Chill\MainBundle\Repository\Workflow\EntityWorkflowRepository;
use Chill\MainBundle\Serializer\Model\Collection;
use Chill\MainBundle\Serializer\Model\Counter;
use Doctrine\ORM\EntityManagerInterface;
use LogicException;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\Security\Core\Exception\AccessDeniedException;
use Symfony\Component\Security\Core\Security;
use Symfony\Component\Serializer\SerializerInterface;

class WorkflowApiController
{
    private EntityManagerInterface $entityManager;

    private EntityWorkflowRepository $entityWorkflowRepository;

    private PaginatorFactory $paginatorFactory;

    private Security $security;

    private SerializerInterface $serializer;

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

    /**
     * Return a list of workflow which are waiting an action for the user.
     *
     * @Route("/api/1.0/main/workflow/my", methods={"GET"})
     */
    public function myWorkflow(Request $request): JsonResponse
    {
        if (!$this->security->isGranted('ROLE_USER') || !$this->security->getUser() instanceof User) {
            throw new AccessDeniedException();
        }

        $total = $this->entityWorkflowRepository->countByDest($this->security->getUser());

        if ($request->query->getBoolean('countOnly', false)) {
            return new JsonResponse(
                $this->serializer->serialize(new Counter($total), 'json'),
                JsonResponse::HTTP_OK,
                [],
                true
            );
        }

        $paginator = $this->paginatorFactory->create($total);

        $workflows = $this->entityWorkflowRepository->findByDest(
            $this->security->getUser(),
            ['id' => 'DESC'],
            $paginator->getItemsPerPage(),
            $paginator->getCurrentPageFirstItemNumber()
        );

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

    /**
     * Return a list of workflow which are waiting an action for the user.
     *
     * @Route("/api/1.0/main/workflow/my-cc", methods={"GET"})
     */
    public function myWorkflowCc(Request $request): JsonResponse
    {
        if (!$this->security->isGranted('ROLE_USER') || !$this->security->getUser() instanceof User) {
            throw new AccessDeniedException();
        }

        $total = $this->entityWorkflowRepository->countByCc($this->security->getUser());

        if ($request->query->getBoolean('countOnly', false)) {
            return new JsonResponse(
                $this->serializer->serialize(new Counter($total), 'json'),
                JsonResponse::HTTP_OK,
                [],
                true
            );
        }

        $paginator = $this->paginatorFactory->create($total);

        $workflows = $this->entityWorkflowRepository->findByCc(
            $this->security->getUser(),
            ['id' => 'DESC'],
            $paginator->getItemsPerPage(),
            $paginator->getCurrentPageFirstItemNumber()
        );

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

    /**
     * @Route("/api/1.0/main/workflow/{id}/subscribe", methods={"POST"})
     */
    public function subscribe(EntityWorkflow $entityWorkflow, Request $request): Response
    {
        return $this->handleSubscription($entityWorkflow, $request, 'subscribe');
    }

    /**
     * @Route("/api/1.0/main/workflow/{id}/unsubscribe", methods={"POST"})
     */
    public function unsubscribe(EntityWorkflow $entityWorkflow, Request $request): Response
    {
        return $this->handleSubscription($entityWorkflow, $request, 'unsubscribe');
    }

    private function handleSubscription(EntityWorkflow $entityWorkflow, Request $request, string $action): JsonResponse
    {
        if (!$this->security->isGranted('IS_AUTHENTICATED_REMEMBERED')) {
            throw new AccessDeniedException();
        }

        if (!$request->query->has('subscribe')) {
            throw new BadRequestHttpException('missing subscribe parameter');
        }

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

        switch ($request->query->get('subscribe')) {
            case 'final':
                switch ($action) {
                    case 'subscribe':
                        $entityWorkflow->addSubscriberToFinal($user);

                        break;

                    case 'unsubscribe':
                        $entityWorkflow->removeSubscriberToFinal($user);

                        break;

                    default:
                        throw new LogicException();
                }

                break;

            case 'step':
                switch ($action) {
                    case 'subscribe':
                        $entityWorkflow->addSubscriberToStep($user);

                        break;

                    case 'unsubscribe':
                        $entityWorkflow->removeSubscriberToStep($user);

                        break;

                    default:
                        throw new LogicException();
                }

                break;

            default:
                throw new BadRequestHttpException('subscribe parameter must be equal to "step" or "final"');
        }

        $this->entityManager->flush();

        return new JsonResponse(
            [
                'step' => $entityWorkflow->isUserSubscribedToStep($user),
                'final' => $entityWorkflow->isUserSubscribedToFinal($user),
            ],
            JsonResponse::HTTP_OK,
            [],
            false
        );
    }
}