1 files changed, 45 insertions, 0 deletions
diff --git a/services/app/src/Twig/CsrfExtension.php b/services/app/src/Twig/CsrfExtension.php
new file mode 100644
index 0000000..b6369a2
--- /dev/null
+++ b/services/app/src/Twig/CsrfExtension.php
@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Nsfisis\Albatross\Twig;
+
+use Slim\Csrf\Guard;
+use Twig\Extension\AbstractExtension;
+use Twig\Extension\GlobalsInterface;
+
+final class CsrfExtension extends AbstractExtension implements GlobalsInterface
+{
+    public function __construct(private readonly Guard $csrf)
+    {
+    }
+
+    /**
+     * @return array{csrf: array{name_key: string, name: string, value_key: string, value: string}}
+     */
+    public function getGlobals(): array
+    {
+        $csrf_name_key = $this->csrf->getTokenNameKey();
+        $csrf_name = $this->csrf->getTokenName();
+        assert(
+            isset($csrf_name),
+            'It must be present here because the access is denied by Csrf\Guard middleware if absent.',
+        );
+
+        $csrf_value_key = $this->csrf->getTokenValueKey();
+        $csrf_value = $this->csrf->getTokenValue();
+        assert(
+            isset($csrf_value),
+            'It must be present here because the access is denied by Csrf\Guard middleware if absent.',
+        );
+
+        return [
+            'csrf' => [
+                'name_key' => $csrf_name_key,
+                'name' => $csrf_name,
+                'value_key' => $csrf_value_key,
+                'value' => $csrf_value
+            ]
+        ];
+    }
+}