<?php

namespace Wallabag\AnnotationBundle\Controller;

use FOS\RestBundle\Controller\FOSRestController;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Wallabag\AnnotationBundle\Entity\Annotation;
use Wallabag\AnnotationBundle\Form\EditAnnotationType;
use Wallabag\AnnotationBundle\Form\NewAnnotationType;
use Wallabag\CoreBundle\Entity\Entry;

class WallabagAnnotationController extends FOSRestController
{
    /**
     * Retrieve annotations for an entry.
     *
     * @see Wallabag\ApiBundle\Controller\WallabagRestController
     *
     * @return JsonResponse
     */
    public function getAnnotationsAction(Entry $entry)
    {
        $annotationRows = $this
            ->getDoctrine()
            ->getRepository('WallabagAnnotationBundle:Annotation')
            ->findByEntryIdAndUserId($entry->getId(), $this->getUser()->getId());
        $total = \count($annotationRows);
        $annotations = ['total' => $total, 'rows' => $annotationRows];

        $json = $this->get('jms_serializer')->serialize($annotations, 'json');

        return (new JsonResponse())->setJson($json);
    }

    /**
     * Creates a new annotation.
     *
     * @return JsonResponse
     *
     * @see Wallabag\ApiBundle\Controller\WallabagRestController
     */
    public function postAnnotationAction(Request $request, Entry $entry)
    {
        $data = json_decode($request->getContent(), true);

        $em = $this->getDoctrine()->getManager();
        $annotation = new Annotation($this->getUser());
        $annotation->setEntry($entry);

        $form = $this->get('form.factory')->createNamed('', NewAnnotationType::class, $annotation, [
            'csrf_protection' => false,
            'allow_extra_fields' => true,
        ]);
        $form->submit($data);

        if ($form->isValid()) {
            $em->persist($annotation);
            $em->flush();

            $json = $this->get('jms_serializer')->serialize($annotation, 'json');

            return JsonResponse::fromJsonString($json);
        }

        return $form;
    }

    /**
     * Updates an annotation.
     *
     * @see Wallabag\ApiBundle\Controller\WallabagRestController
     *
     * @return JsonResponse
     */
    public function putAnnotationAction(Request $request, int $annotation)
    {
        try {
            $annotation = $this->validateAnnotation($annotation, $this->getUser()->getId());

            $data = json_decode($request->getContent(), true, 512, \JSON_THROW_ON_ERROR);

            $form = $this->get('form.factory')->createNamed('', EditAnnotationType::class, $annotation, [
                'csrf_protection' => false,
                'allow_extra_fields' => true,
            ]);
            $form->submit($data);

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

                $json = $this->get('jms_serializer')->serialize($annotation, 'json');

                return JsonResponse::fromJsonString($json);
            }

            return $form;
        } catch (\InvalidArgumentException $e) {
            throw new NotFoundHttpException($e);
        }
    }

    /**
     * Removes an annotation.
     *
     * @see Wallabag\ApiBundle\Controller\WallabagRestController
     *
     * @return JsonResponse
     */
    public function deleteAnnotationAction(int $annotation)
    {
        try {
            $annotation = $this->validateAnnotation($annotation, $this->getUser()->getId());

            $em = $this->getDoctrine()->getManager();
            $em->remove($annotation);
            $em->flush();

            $json = $this->get('jms_serializer')->serialize($annotation, 'json');

            return (new JsonResponse())->setJson($json);
        } catch (\InvalidArgumentException $e) {
            throw new NotFoundHttpException($e);
        }
    }

    private function validateAnnotation(int $annotationId, int $userId)
    {
        $em = $this->getDoctrine()->getManager();

        $annotation = $em->getRepository('WallabagAnnotationBundle:Annotation')->findOneByIdAndUserId($annotationId, $userId);

        if (null === $annotation) {
            throw new NotFoundHttpException();
        }

        return $annotation;
    }
}