namespace App\Http\Middleware;

use Closure;

class VerifySimServer
{
    public function handle($request, Closure $next)
    {
        $signature = $request->header('X-SIGNATURE');
        $expected = hash_hmac(
            'sha256',
            $request->request_id,
            env('SIM_SERVER_SECRET')
        );

        if (!hash_equals($signature, $expected)) {
            return response()->json(['error' => 'Unauthorized'], 401);
        }

        return $next($request);
    }
}