init

app/code/Esun/FreeGift/Model/InternalAddGuard.php

@@ -0,0 +1,25 @@
+<?php
+declare(strict_types=1);
+
+namespace Esun\FreeGift\Model;
+
+class InternalAddGuard
+{
+    private int $depth = 0;
+
+    public function isAllowed(): bool
+    {
+        return $this->depth > 0;
+    }
+
+    public function execute(callable $callback): mixed
+    {
+        $this->depth++;
+
+        try {
+            return $callback();
+        } finally {
+            $this->depth--;
+        }
+    }
+}