<?php

namespace App\MessageHandler;

use App\Config\Connector\OvhConnector;
use App\Config\ConnectorProvider;
use App\Config\TriggerAction;
use App\Entity\Connector;
use App\Entity\Domain;
use App\Entity\DomainEvent;
use App\Entity\User;
use App\Entity\WatchList;
use App\Entity\WatchListTrigger;
use App\Message\ProcessDomainTrigger;
use App\Repository\DomainRepository;
use App\Repository\WatchListRepository;
use Exception;
use Symfony\Bridge\Twig\Mime\TemplatedEmail;
use Symfony\Component\HttpKernel\KernelInterface;
use Symfony\Component\Mailer\Exception\TransportExceptionInterface;
use Symfony\Component\Mailer\MailerInterface;
use Symfony\Component\Messenger\Attribute\AsMessageHandler;
use Symfony\Component\Mime\Email;
use Throwable;

#[AsMessageHandler]
final readonly class ProcessDomainTriggerHandler
{
    public function __construct(
        private string              $mailerSenderEmail,
        private MailerInterface     $mailer,
        private WatchListRepository $watchListRepository,
        private DomainRepository    $domainRepository,
        private KernelInterface     $kernel

    )
    {
    }

    /**
     * @throws TransportExceptionInterface
     * @throws Exception
     */
    public function __invoke(ProcessDomainTrigger $message): void
    {
        /** @var WatchList $watchList */
        $watchList = $this->watchListRepository->findOneBy(["token" => $message->watchListToken]);
        /** @var Domain $domain */
        $domain = $this->domainRepository->findOneBy(["ldhName" => $message->ldhName]);

        $watchListTriggers = $watchList->getWatchListTriggers();

        /** @var WatchListTrigger $watchListTrigger */
        foreach ($watchListTriggers->getIterator() as $watchListTrigger) {

            if ($watchListTrigger->getAction() === TriggerAction::BuyDomain) {

                try {
                    if ($watchListTrigger->getConnector() === null) throw new Exception('Connector is missing');
                    $connector = $watchListTrigger->getConnector();

                    if ($connector->getProvider() === ConnectorProvider::OVH) {
                        $ovh = new OVHConnector($connector->getAuthData());
                        $isDebug = $this->kernel->isDebug();

                        $ovh->orderDomain($domain, $isDebug);
                        $this->sendEmailDomainOrdered($domain, $connector, $watchList->getUser());
                    } else throw new Exception("Unknown provider");
                } catch (Throwable) {
                    $this->sendEmailDomainOrderError($domain, $watchList->getUser());
                }
            }

            /** @var DomainEvent $event */
            foreach ($domain->getEvents()->filter(fn($event) => $message->updatedAt < $event->getDate()) as $event) {
                if ($watchListTrigger->getAction() == TriggerAction::SendEmail) {
                    $this->sendEmailDomainUpdated($event, $watchList->getUser());
                }
            }
        }
    }

    /**
     * @throws TransportExceptionInterface
     */
    private function sendEmailDomainOrdered(Domain $domain, Connector $connector, User $user): void
    {
        $email = (new TemplatedEmail())
            ->from($this->mailerSenderEmail)
            ->to($user->getEmail())
            ->priority(Email::PRIORITY_HIGHEST)
            ->subject('A domain name has been ordered')
            ->htmlTemplate('emails/success/domain_ordered.html.twig')
            ->locale('en')
            ->context([
                "domain" => $domain,
                "provider" => $connector->getProvider()->value
            ]);

        $this->mailer->send($email);
    }

    /**
     * @throws TransportExceptionInterface
     */
    private function sendEmailDomainOrderError(Domain $domain, User $user): void
    {
        $email = (new TemplatedEmail())
            ->from($this->mailerSenderEmail)
            ->to($user->getEmail())
            ->subject('An error occurred while ordering a domain name')
            ->htmlTemplate('emails/errors/domain_order.html.twig')
            ->locale('en')
            ->context([
                "domain" => $domain
            ]);

        $this->mailer->send($email);
    }

    /**
     * @throws TransportExceptionInterface
     */
    private function sendEmailDomainUpdated(DomainEvent $domainEvent, User $user): void
    {
        $email = (new TemplatedEmail())
            ->from($this->mailerSenderEmail)
            ->to($user->getEmail())
            ->priority(Email::PRIORITY_HIGHEST)
            ->subject('A domain name has been changed')
            ->htmlTemplate('emails/success/domain_updated.html.twig')
            ->locale('en')
            ->context([
                "event" => $domainEvent
            ]);

        $this->mailer->send($email);
    }

}