<?php


namespace App\Controller;

use App\Entity\City;
use App\Entity\Weather;
use App\Repository\WeatherRepository;
use App\Service\OpenWeather;
use App\Type\WeatherType;
use Doctrine\ORM\EntityManagerInterface;
use Knp\Component\Pager\PaginatorInterface;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Contracts\HttpClient\Exception\ClientExceptionInterface;
use Symfony\Contracts\HttpClient\Exception\DecodingExceptionInterface;
use Symfony\Contracts\HttpClient\Exception\RedirectionExceptionInterface;
use Symfony\Contracts\HttpClient\Exception\ServerExceptionInterface;
use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;

/**
 * Contactsubject controller.
 *
 * @Route("/")
 */
class MapController extends AbstractController
{
    private $openWeather;
    private $em;

    public function __construct(OpenWeather $openWeather, EntityManagerInterface $em)
    {
        $this->openWeather = $openWeather;
        $this->em = $em;
    }

    /**
     * @Route("/", name="index", methods={"GET"})
     */
    public function index()
    {
        $weather = new Weather();
        $form = $this->createForm(WeatherType::class, $weather);

        return $this->render('map/index.html.twig', [
            'form' => $form->createView(),
        ]);
    }

    /**
     * @Route("get-weather", name="getWeather", methods={"POST"})
     * @param Request $request
     * @return JsonResponse
     * @throws ClientExceptionInterface
     * @throws DecodingExceptionInterface
     * @throws RedirectionExceptionInterface
     * @throws ServerExceptionInterface
     * @throws TransportExceptionInterface
     */
    public function getWeather(Request $request)
    {
        if ($request->isXMLHttpRequest()) {

            $lat = $request->request->get('weather')['lat'];
            $lng = $request->request->get('weather')['lng'];

            if (!empty($lng) && !empty($lat)) {

                $form = $this->createForm(WeatherType::class);
                $form->handleRequest($request);

                if ($form->isValid()) {
                    $weather = $this->openWeather->fetchCurrentWeatherByCoordinates($lat, $lng);

                    if ($weather) {

                        $this->saveResults($weather);

                        return new JsonResponse($weather);
                    } else {
                        return new JsonResponse(['status' => 'error', 'message' => 'Open Weather Map error']);
                    }
                } else {
                    return new JsonResponse($form->getErrors());
                }
            }

            return new JsonResponse(['status' => 'error', 'message' => 'Error']);
        }
    }

    /**
     * @Route("results", name="results", methods={"GET"})
     * @param PaginatorInterface $paginator
     * @param Request $request
     * @param WeatherRepository $repository
     * @return Response
     */
    public function results(PaginatorInterface $paginator, Request $request, WeatherRepository $repository)
    {
        $results = $repository->paginationList();

        $pagination = $paginator->paginate(
            $results, /* query NOT result */
            $request->query->getInt('page', 1), /*page number*/
            Weather::PAGE_LIMIT /*limit per page*/
        );

        return $this->render('map/results.html.twig', [
            'pagination' => $pagination,
            'temperatureStats' => $repository->findTemperatureStats(),
            'commonCity' => $repository->findCommonCity()
        ]);
    }

    private function saveResults($result)
    {
        $city = $this->em->getRepository(City::class)->findOneBy(['openWeatherId' => $result['id']]);

        if (empty($city)) {
            $city = new City();
            $city->setName($result['name']);
            $city->setOpenWeatherId($result['id']);

            $this->em->persist($city);
        }

        $weather = new Weather();
        $weather->setLat($result['coord']['lat']);
        $weather->setLng($result['coord']['lon']);
        $weather->setDescription($result['weather'][0]['description']);
        $weather->setCloudiness($result['clouds']['all']);
        $weather->setTemperature($result['main']['temp']);
        $weather->setWindSpeed($result['wind']['speed']);
        $weather->setCity($city);

        $this->em->persist($weather);

        $this->em->flush();
    }
}