<?php

namespace App\Controller;

use App\Config\ConnectorProvider;
use App\Entity\Connector;
use App\Entity\User;
use App\Service\Connector\AbstractProvider;
use DateTimeImmutable;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\EntityManagerInterface;
use Exception;
use Psr\Log\LoggerInterface;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\DependencyInjection\Attribute\Autowire;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
use Symfony\Component\Routing\Attribute\Route;
use Symfony\Component\Serializer\SerializerInterface;

class ConnectorController extends AbstractController
{
    public function __construct(
        private readonly SerializerInterface    $serializer,
        private readonly EntityManagerInterface $em,
        private readonly LoggerInterface        $logger,
        #[Autowire(service: 'service_container')]
        private readonly ContainerInterface     $locator,
    )
    {
    }

    #[Route(
        path: '/api/connectors',
        name: 'connector_get_all_mine',
        defaults: [
            '_api_resource_class' => Connector::class,
            '_api_operation_name' => 'get_all_mine',
        ],
        methods: ['GET']
    )]
    public function getConnector(): Collection
    {
        /** @var User $user */
        $user = $this->getUser();

        return $user->getConnectors();
    }

    /**
     * @throws Exception
     */
    #[Route(
        path: '/api/connectors',
        name: 'connector_create',
        defaults: [
            '_api_resource_class' => Connector::class,
            '_api_operation_name' => 'create',
        ],
        methods: ['POST']
    )]
    public function createConnector(Request $request): Connector
    {
        /** @var Connector $connector */
        $connector = $this->serializer->deserialize($request->getContent(), Connector::class, 'json', ['groups' => 'connector:create']);
        /** @var User $user */
        $user = $this->getUser();
        $connector->setUser($user);

        $provider = $connector->getProvider();

        $this->logger->info('User {username} wants to register a connector from provider {provider}.', [
            'username' => $user->getUserIdentifier(),
            'provider' => $provider->value,
        ]);

        if (null === $provider) {
            throw new BadRequestHttpException('Provider not found');
        }

        if ($provider === ConnectorProvider::EPP) {
            $directory = sprintf('var/epp-certificates/%s/', $connector->getId());

            $filesystem = new Filesystem();
            $filesystem->mkdir($directory);
            $authData = $connector->getAuthData();

            if (!isset($authData['certificate_pem'], $authData['certificate_key'])) {
                throw new BadRequestHttpException('EPP certificates are required');
            }

            $pemPath = $directory . 'certificate.pem';
            $keyPath = $directory . 'certificate.key';

            $filesystem->dumpFile($pemPath, $authData['certificate_pem']);
            $filesystem->dumpFile($keyPath, $authData['certificate_key']);

            $connector->setAuthData([...$authData, 'files' => ['pem' => $pemPath, 'key' => $keyPath]]);
        }

        /** @var AbstractProvider $providerClient */
        $providerClient = $this->locator->get($provider->getConnectorProvider());
        $authData = $providerClient->verifyAuthData($connector->getAuthData());
        $connector->setAuthData($authData);
        $providerClient->authenticate($authData);

        $this->logger->info('User {username} authentication data with the {provider} provider has been validated.', [
            'username' => $user->getUserIdentifier(),
            'provider' => $provider->value,
        ]);

        $this->logger->info('The new API connector requested by {username} has been successfully registered.', [
            'username' => $user->getUserIdentifier(),
        ]);

        $connector->setCreatedAt(new DateTimeImmutable('now'));
        $this->em->persist($connector);
        $this->em->flush();

        return $connector;
    }
}