release: v5.2.3 - Redis optimizations, stats scaling, DNS and CSP fixes

src/Http/Controllers/ShortUrlUtilityController.php

@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * @author     Bartek Janczak <barek122@gmail.com>
+ * @copyright  2026 Bartek Janczak
+ * @license    Custom Source-Available License (see LICENSE file)
+ */
+
+namespace Bjanczak\FilamentShortUrl\Http\Controllers;
+
+use Bjanczak\FilamentShortUrl\Services\IframeableChecker;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\Routing\Controller;
+
+class ShortUrlUtilityController extends Controller
+{
+    public function __construct(
+        private readonly IframeableChecker $iframeableChecker,
+    ) {}
+
+    /**
+     * Pre-check whether a destination URL can be embedded in a cloaking iframe.
+     */
+    public function checkIframeable(Request $request): JsonResponse
+    {
+        $validated = $request->validate([
+            'url' => 'required|url|max:2048',
+        ]);
+
+        $url = $validated['url'];
+        $iframeable = $this->iframeableChecker->isIframeable($url);
+
+        return response()->json([
+            'url' => $url,
+            'iframeable' => $iframeable,
+        ]);
+    }
+}