feat(altcha): add altcha validation layer to login

src/Altcha/AltchaValidator.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Altcha;
+
+use Symfony\Component\Form\FormError;
+use Symfony\Component\Form\FormEvent;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Contracts\HttpClient\HttpClientInterface;
+use Symfony\Contracts\Translation\TranslatorInterface;
+
+class AltchaValidator
+{
+    public function __construct(
+        private readonly string $altchaHost,
+        private readonly string $altchaBaseUrl,
+        private readonly HttpClientInterface $httpClient,
+        private readonly TranslatorInterface $translator
+    ) {
+    }
+
+    public function validate(FormEvent $formEvent): void
+    {
+        $form = $formEvent->getForm();
+        $data = $form->getData();
+
+        $response = $this->httpClient->request(
+            'POST',
+            $this->altchaHost.$this->altchaBaseUrl.'/verify',
+            [
+                'body' => json_encode($data),
+                'headers' => [
+                    'Content-Type' => 'application/json',
+                ],
+            ],
+        );
+
+        if (Response::HTTP_OK !== $response->getStatusCode()) {
+            $form->addError(new FormError($this->translator->trans('altcha.validator.server_validation_error', [], 'form')));
+
+            return;
+        }
+
+        $content = $response->getContent();
+        $parsedResponse = json_decode($content);
+
+        if (true !== $parsedResponse->success) {
+            $form->addError(new FormError($this->translator->trans('altcha.validator.server_validation_error', [], 'form')));
+
+            return;
+        }
+    }
+}