frontend and backend

backend/src/Controller/DencodeController.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+
+class DencodeController extends AbstractController
+{
+    #[Route('/api/dencode', name: 'api_dencode', methods: "GET")]
+    public function index(): Response
+    {
+        return $this->json([
+            'message' => 'Welcome to your new controller!',
+            'path' => 'src/Controller/DencodeController.php',
+        ]);
+    }
+}

backend/src/Controller/ErrorController.php

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+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * Exceptions will end here.
+ */
+class ErrorController extends AbstractController
+{
+    public function show(\Throwable $exception): Response
+    {
+        //return $this->json(['fatal' => sprintf('%s: %s [%s:%d]', $exception::class, $exception->getMessage(), basename($exception->getFile()), $exception->getLine())]);
+        return $this->json(['fatal' => sprintf('%s: %s', $exception::class, $exception->getMessage())]);
+    }
+}

backend/src/Controller/PregController.php

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+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller;
+
+use App\Entity\PregDTO;
+use App\Service\Preg;
+use Exception;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\Routing\Annotation\Route;
+use Symfony\Component\Serializer\SerializerInterface;
+
+/**
+ * PREGs controller.
+ */
+class PregController extends AbstractController
+{
+    private const STORE_KEY = 'xrg.es2022:%s';
+    private const STORE_TTL = 60*60*24*7;
+
+    #[Route('/api/preg', name: 'api_preg_post', methods: ["POST"])]
+    public function index(Request $request, SerializerInterface $serializer, \Redis $redis): Response
+    {
+        $dto = $serializer->deserialize($request->getContent(), PregDTO::class, 'json');
+
+        if ($dto->pattern === '') {
+            throw new Exception('Empty regular expression');
+        }
+
+        $preg = new Preg($dto);
+        $result = $preg->exec();
+        $key = $preg->getHash();
+
+        $redis->setex(sprintf(self::STORE_KEY, $key), self::STORE_TTL, $serializer->serialize($dto, 'json'));
+
+        return $this->json(array_merge((array)$result, ['hash' => $key]));
+    }
+
+    #[Route('/api/preg', name: 'api_preg_hash', methods: ["GET"])]
+    public function hash(Request $request, \Redis $redis): Response
+    {
+        $json = $redis->get(sprintf(self::STORE_KEY, $request->query->get('hash')));
+
+        if ($json === false) {
+            throw new NotFoundHttpException('Key not found.');
+        }
+
+        return JsonResponse::fromJsonString($json);
+    }
+}