update lisensi prosess

app/Billing/PaymentGatewayManager.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Billing;
+
+use App\Billing\Contracts\PaymentGateway;
+use InvalidArgumentException;
+
+class PaymentGatewayManager
+{
+    public function driver(?string $name = null): PaymentGateway
+    {
+        $name ??= config('billing.default_gateway');
+        $class = config("billing.gateways.{$name}");
+        if (! $class || ! is_a($class, PaymentGateway::class, true)) {
+            throw new InvalidArgumentException("Payment gateway [{$name}] tidak tersedia.");
+        }
+
+        return app($class);
+    }
+}