Add form and types to handle async files

src/Bundle/ChillDocStoreBundle/Validator/Constraints/AsyncFileExistsValidator.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Validator\Constraints;
+
+use Chill\DocStoreBundle\AsyncUpload\TempUrlGeneratorInterface;
+use Chill\DocStoreBundle\Entity\StoredObject;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+use Symfony\Component\Validator\Exception\UnexpectedValueException;
+use Symfony\Contracts\HttpClient\Exception\HttpExceptionInterface;
+use Symfony\Contracts\HttpClient\HttpClientInterface;
+
+final class AsyncFileExistsValidator extends ConstraintValidator
+{
+    public function __construct(
+        private readonly TempUrlGeneratorInterface $tempUrlGenerator,
+        private readonly HttpClientInterface $client
+    ) {}
+
+    public function validate($value, Constraint $constraint): void
+    {
+        if ($value instanceof StoredObject) {
+            $this->validateObject($value->getFilename(), $constraint);
+        } elseif (is_string($value)) {
+            $this->validateObject($value, $constraint);
+        } else {
+            throw new UnexpectedValueException($value, StoredObject::class.' or string');
+        }
+    }
+
+    protected function validateObject(string $file, Constraint $constraint): void
+    {
+        if (!$constraint instanceof AsyncFileExists) {
+            throw new UnexpectedTypeException($constraint, AsyncFileExists::class);
+        }
+
+        $urlHead = $this->tempUrlGenerator->generate(
+            'HEAD',
+            $file,
+            30
+        );
+
+        try {
+            $response = $this->client->request('HEAD', $urlHead->url);
+
+            if (404 === $response->getStatusCode()) {
+                $this->context->buildViolation($constraint->message)
+                    ->setParameter('{{ filename }}', $file)
+                    ->addViolation();
+            }
+        } catch (HttpExceptionInterface $exception) {
+            if (404 !== $exception->getResponse()->getStatusCode()) {
+                throw $exception;
+            }
+        }
+    }
+}