From 4cda4d3bdaf6e0614172fa9842391fa9eb6bf36b Mon Sep 17 00:00:00 2001
From: Kevin Adametz <kevin.adametz@me.com>
Date: Tue, 7 Jul 2026 11:42:31 +0000
Subject: [PATCH] STR-Spiegelung: USt aus total_taxes lesen (Stripe-API ohne
 tax-Feld)
MIME-Version: 1.0
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Aktuelle Stripe-API-Versionen liefern kein Top-Level-`tax` mehr auf der
Invoice — die Spiegelung buchte 0 USt und markierte die Rechnung als
netto (QA-Befund 07.07., STR-00001). Fallback-Kette: tax (alt) →
total_taxes (aktuell) → total_tax_amounts (Übergangsname).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 app/Listeners/ProcessStripeWebhook.php        |  5 ++++-
 .../Billing/StripeWebhookProcessingTest.php   | 19 +++++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/app/Listeners/ProcessStripeWebhook.php b/app/Listeners/ProcessStripeWebhook.php
index 4e646e61..165c4d52 100644
--- a/app/Listeners/ProcessStripeWebhook.php
+++ b/app/Listeners/ProcessStripeWebhook.php
@@ -74,7 +74,10 @@ class ProcessStripeWebhook
         }
 
         $subtotal = (int) ($stripeInvoice['subtotal'] ?? 0);
-        $tax = (int) ($stripeInvoice['tax'] ?? 0);
+        // Steuer je nach Stripe-API-Generation: `tax` (alt), sonst Summe aus
+        // `total_taxes` (aktuell) bzw. `total_tax_amounts` (Übergangsname).
+        $tax = (int) ($stripeInvoice['tax']
+            ?? collect($stripeInvoice['total_taxes'] ?? $stripeInvoice['total_tax_amounts'] ?? [])->sum('amount'));
         $total = (int) ($stripeInvoice['total'] ?? $subtotal + $tax);
 
         $invoice = Invoice::query()->create([
diff --git a/tests/Feature/Billing/StripeWebhookProcessingTest.php b/tests/Feature/Billing/StripeWebhookProcessingTest.php
index fd93a3b1..7d906d8b 100644
--- a/tests/Feature/Billing/StripeWebhookProcessingTest.php
+++ b/tests/Feature/Billing/StripeWebhookProcessingTest.php
@@ -52,6 +52,25 @@ test('a paid stripe invoice is mirrored into the STR circle', function () {
     expect($invoice->invoiceBillingAddress->name)->toBe('Alpha GmbH');
 });
 
+test('a current-api invoice without top-level tax reads total_taxes', function () {
+    // Stripe-API ab 2025: kein `tax`-Feld mehr, Steuer steht in `total_taxes`
+    // (QA-Befund 07.07.: USt. wurde als 0 gespiegelt).
+    $user = User::factory()->create(['stripe_id' => 'cus_test_1']);
+
+    app(ProcessStripeWebhook::class)->handle(new WebhookReceived(stripeInvoicePayload($user, [
+        'tax' => null,
+        'subtotal' => 2900,
+        'total' => 3451,
+        'total_taxes' => [['amount' => 551, 'taxable_amount' => 2900, 'tax_behavior' => 'exclusive']],
+    ])));
+
+    $invoice = Invoice::sole();
+    expect($invoice->amount_cents)->toBe(2900);
+    expect($invoice->tax_cents)->toBe(551);
+    expect($invoice->total_cents)->toBe(3451);
+    expect($invoice->is_netto)->toBeFalse();
+});
+
 test('duplicate webhook deliveries do not create a second invoice', function () {
     $user = User::factory()->create(['stripe_id' => 'cus_test_1']);
     $listener = app(ProcessStripeWebhook::class);