FrankProjects/UltimateWarfare

<?php

declare(strict_types=1);

namespace FrankProjects\UltimateWarfare\Form\EventListener;

use ReCaptcha\ReCaptcha;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Form\FormError;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\HttpFoundation\Request;

class ReCaptchaValidationListener implements EventSubscriberInterface
{
    private ReCaptcha $reCaptcha;
    private string $invalidMessage = 'The captcha is invalid.';

    public function __construct(ReCaptcha $reCaptcha)
    {
        $this->reCaptcha = $reCaptcha;
    }

    public static function getSubscribedEvents(): array
    {
        return [
            FormEvents::POST_SUBMIT => 'onPostSubmit'
        ];
    }

    public function setInvalidMessage(string $message): self
    {
        $this->invalidMessage = $message;

        return $this;
    }

    public function onPostSubmit(FormEvent $event): void
    {
        $request = Request::createFromGlobals();

        $result = $this->reCaptcha
            ->setExpectedHostname($request->getHost())
            ->verify((string) $request->request->get('g-recaptcha-response'), $request->getClientIp());

        if (!$result->isSuccess()) {
            $event->getForm()->addError(new FormError($this->invalidMessage));
        }
    }
}