added attchments

app/Http/Controllers/PreviewController.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Actions\BbcodeFormatter;
+use Illuminate\Http\Request;
+
+class PreviewController extends Controller
+{
+    public function preview(Request $request)
+    {
+        $data = $request->validate([
+            'body' => ['required', 'string'],
+        ]);
+
+        return response()->json([
+            'html' => BbcodeFormatter::format($data['body']),
+        ]);
+    }
+}