ladill-pos/app/Http/Middleware/EnsurePro.php

<?php

namespace App\Http\Middleware;

use App\Services\Pos\SubscriptionService;
use Closure;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;

class EnsurePro
{
    public function __construct(private readonly SubscriptionService $subscriptions) {}

    public function handle(Request $request, Closure $next): Response
    {
        $user = ladill_account() ?? $request->user();

        if ($user && $this->subscriptions->isPro($user)) {
            return $next($request);
        }

        if ($request->expectsJson()) {
            return response()->json(['message' => 'This feature requires Ladill POS Pro.'], 402);
        }

        return redirect()->route('pos.pro.index')
            ->with('upsell', 'That feature is part of Ladill POS Pro — subscribe to unlock it.');
    }
}