Laravel auth user on webhook - php

Question

I am having trouble with authenticated user in my Laravel/Vue app. Once you log in, you can choose to make a purchase via Stripe which leads you off the page, and returns back upon payment.
Just to make sure, I've made an endpoint:
Route::get('test', function(){
return Auth::user();
});
And before and after Stripe, when I hit it, I do get back the user. So authentication is in order.
What happens though is that Stripe upon payment event makes a webhook callback to my route:
Route::post('api/stripe/checkout-session-completed', 'StripeController#checkoutSessionCompleted');
Inside a hook, event is fired which should propagate number of credits purchased to the user who made the purchase, however I am always getting that Auth::user() is not defined.
use Illuminate\Support\Facades\Auth;
...
public function checkoutSessionCompleted()
{
...
$this->handleCheckout($session); // this is Stripe session object
...
}
private function handleCheckout($session)
{
...
event(new PaymentSuccessful($payment, Auth::user()));
...
}
Was this supposed to happen? How can I get the currently auth user if not like this?

Answer 1

Looks like sessions aren't shared when external source makes a POST request to your route. I made a workaround to include user ID within Stripe session metadata, so I can find user by that same ID when request returns via webhook.
$stripeSession = Session::create([
'success_url' => route('stripe.success') . '/?session_id={CHECKOUT_SESSION_ID}',
'cancel_url' => route('stripe.cancel'),
'payment_method_types' => ['card'],
'mode' => 'payment',
'line_items' => [
[
'price_data' => [
'currency' => 'eur',
'product' => env('STRIPE_PRODUCT_ID'),
'unit_amount' => $price->stripe_price * 100,
],
'description' => "Credits to receive: $price->quantity",
'quantity' => 1,
],
],
'metadata' => [
'quantity' => $price->quantity,
'user_id' => Auth::user()->id,
],
'customer_email' => optional(Auth::user())->email ?? null,
'client_reference_id' => optional(Auth::user())->id ?? null,
]);