<?php

/*
 * This file is part of the Sylius package.
 *
 * (c) Paweł Jędrzejewski
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Sylius\Bundle\OrderBundle\Controller;

use FOS\RestBundle\View\View;
use Sylius\Bundle\ResourceBundle\Controller\RequestConfiguration;
use Sylius\Bundle\ResourceBundle\Controller\ResourceController;
use Sylius\Component\Order\Context\CartContextInterface;
use Sylius\Component\Order\Model\OrderInterface;
use Sylius\Component\Order\Repository\OrderRepositoryInterface;
use Sylius\Component\Order\SyliusCartEvents;
use Sylius\Component\Resource\ResourceActions;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\EventDispatcher\GenericEvent;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\HttpException;

class OrderController extends ResourceController
{
    public function summaryAction(Request $request): Response
    {
        $configuration = $this->requestConfigurationFactory->create($this->metadata, $request);

        $cart = $this->getCurrentCart();
        if (null !== $cart->getId()) {
            $cart = $this->getOrderRepository()->findCartById($cart->getId());
        }

        if (!$configuration->isHtmlRequest()) {
            return $this->viewHandler->handle($configuration, View::create($cart));
        }

        $form = $this->resourceFormFactory->create($configuration, $cart);

        return $this->render(
            $configuration->getTemplate('summary.html'),
            [
                'cart' => $cart,
                'form' => $form->createView(),
            ]
        );
    }

    public function widgetAction(Request $request): Response
    {
        $configuration = $this->requestConfigurationFactory->create($this->metadata, $request);

        $cart = $this->getCurrentCart();

        if (!$configuration->isHtmlRequest()) {
            return $this->viewHandler->handle($configuration, View::create($cart));
        }

        return $this->render(
            $configuration->getTemplate('summary.html'),
            [
                'cart' => $cart,
            ]
        );
    }

    public function saveAction(Request $request): Response
    {
        $configuration = $this->requestConfigurationFactory->create($this->metadata, $request);

        $this->isGrantedOr403($configuration, ResourceActions::UPDATE);
        $resource = $this->getCurrentCart();

        $form = $this->resourceFormFactory->create($configuration, $resource);

        if (in_array($request->getMethod(), ['POST', 'PUT', 'PATCH'], true) && $form->handleRequest($request)->isValid()) {
            $resource = $form->getData();

            $event = $this->eventDispatcher->dispatchPreEvent(ResourceActions::UPDATE, $configuration, $resource);

            if ($event->isStopped() && !$configuration->isHtmlRequest()) {
                throw new HttpException($event->getErrorCode(), $event->getMessage());
            }
            if ($event->isStopped()) {
                $this->flashHelper->addFlashFromEvent($configuration, $event);

                return $this->redirectHandler->redirectToResource($configuration, $resource);
            }

            if ($configuration->hasStateMachine()) {
                $this->stateMachine->apply($configuration, $resource);
            }

            $this->eventDispatcher->dispatchPostEvent(ResourceActions::UPDATE, $configuration, $resource);

            $this->getEventDispatcher()->dispatch(new GenericEvent($resource), SyliusCartEvents::CART_CHANGE);
            $this->manager->flush();

            if (!$configuration->isHtmlRequest()) {
                return $this->viewHandler->handle($configuration, View::create(null, Response::HTTP_NO_CONTENT));
            }

            $this->flashHelper->addSuccessFlash($configuration, ResourceActions::UPDATE, $resource);

            return $this->redirectHandler->redirectToResource($configuration, $resource);
        }

        if (!$configuration->isHtmlRequest()) {
            return $this->viewHandler->handle($configuration, View::create($form, Response::HTTP_BAD_REQUEST));
        }

        return $this->render(
            $configuration->getTemplate(ResourceActions::UPDATE . '.html'),
            [
                'configuration' => $configuration,
                $this->metadata->getName() => $resource,
                'form' => $form->createView(),
                'cart' => $resource,
            ]
        );
    }

    public function clearAction(Request $request): Response
    {
        $configuration = $this->requestConfigurationFactory->create($this->metadata, $request);

        $this->isGrantedOr403($configuration, ResourceActions::DELETE);
        $resource = $this->getCurrentCart();

        if ($configuration->isCsrfProtectionEnabled() && !$this->isCsrfTokenValid((string) $resource->getId(), $request->get('_csrf_token'))) {
            throw new HttpException(Response::HTTP_FORBIDDEN, 'Invalid csrf token.');
        }

        $event = $this->eventDispatcher->dispatchPreEvent(ResourceActions::DELETE, $configuration, $resource);

        if ($event->isStopped() && !$configuration->isHtmlRequest()) {
            throw new HttpException($event->getErrorCode(), $event->getMessage());
        }
        if ($event->isStopped()) {
            $this->flashHelper->addFlashFromEvent($configuration, $event);

            return $this->redirectHandler->redirectToIndex($configuration, $resource);
        }

        $this->repository->remove($resource);
        $this->eventDispatcher->dispatchPostEvent(ResourceActions::DELETE, $configuration, $resource);

        if (!$configuration->isHtmlRequest()) {
            return $this->viewHandler->handle($configuration, View::create(null, Response::HTTP_NO_CONTENT));
        }

        $this->flashHelper->addSuccessFlash($configuration, ResourceActions::DELETE, $resource);

        return $this->redirectHandler->redirectToIndex($configuration, $resource);
    }

    protected function redirectToCartSummary(RequestConfiguration $configuration): Response
    {
        if (null === $configuration->getParameters()->get('redirect')) {
            return $this->redirectHandler->redirectToRoute($configuration, $this->getCartSummaryRoute());
        }

        return $this->redirectHandler->redirectToRoute($configuration, $configuration->getParameters()->get('redirect'));
    }

    protected function getCartSummaryRoute(): string
    {
        return 'sylius_cart_summary';
    }

    protected function getCurrentCart(): OrderInterface
    {
        return $this->getContext()->getCart();
    }

    protected function getContext(): CartContextInterface
    {
        return $this->get('sylius.context.cart');
    }

    protected function getOrderRepository(): OrderRepositoryInterface
    {
        return $this->get('sylius.repository.order');
    }

    protected function getEventDispatcher(): EventDispatcherInterface
    {
        return $this->container->get('event_dispatcher');
    }
}
