Fake gateway

Gateway name fake, driver Gateways\Fake\FakeGateway. Registered automatically in the local and testing environments only — Billing::extend('fake', ...) throws anywhere else.

$payment = Payment::create([
    'gateway' => 'fake',
    'amount' => 10000,
    'currency' => 'UAH',
    'payable_type' => $order->getMorphClass(),
    'payable_id' => $order->id,
    'billable_type' => $user->getMorphClass(),
    'billable_id' => $user->id,
]);

Billing::charge($payment);

return redirect($payment->payment_url); // billing/fake/{payment}

The page (billing.fake.show) shows the amount and two buttons, Paid and Rejected. Each posts straight to POST /billing/webhooks/fake with payment_id and result (success or anything else = failure) — the same storage → queued job → dedup → events pipeline a real gateway goes through.

• No signature check, no amount check, no return URLs needed.
• After a click the browser stays on the webhook’s JSON response ({"message":"ok"}) — the fake page doesn’t redirect to your return pages.
• No checkout expiry, no refunds, no saved cards, no status polling. billing:reconcile-pending-payments writes a fake payment left pending past reconcile_after_minutes off as canceled.
• billing:health fake is always up.

Supported currencies: UAH, USD, EUR.