Übernahmegutschrift: Verrechnung nach Wechsel, Mail K09, Leitfaden, Admin zeigt das Abo, Tests

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

server/services/takeoverCredits.js

@@ -6,7 +6,7 @@ import { domainToASCII, domainToUnicode } from 'node:url'
 import { config } from '../config.js'
 import { createDocument, getDocument, listDocuments, Query, updateDocument } from './appwriteAdmin.js'
 import { sendAdminNotice, sendCustomerMail } from './mailer.js'
-import { getProduct } from './products.js'
+import { getProduct, PRODUCT_KEYS } from './products.js'
 import { ACTIVE_STATUSES, getCurrentSubscription, getStripe, isStripeConfigured } from './stripeBilling.js'
 
 /**
@@ -35,7 +35,7 @@ export const STATUS = {
 export const SERVICE_LABELS = {
   domain: 'Domain',
   hosting: 'Hosting / Website-Betrieb',
-  email: 'E-Mail-Postfach',
+  email: 'E-Mail-Postfächer',
   sonstiges: 'Sonstiges',
 }
 
@@ -349,6 +349,8 @@ function withHistory(doc, entry) {
 
 const serviceStartOf = (sub) => sub?.trialEnd || sub?.startedAt || null
 const isActiveSub = (sub) => Boolean(sub && ACTIVE_STATUSES.has(sub.status))
+// Produkt des Abos: Altbestand ohne productKey und unbekannte Schluessel gelten als Wartungs-Abo
+const productKeyOf = (sub) => (PRODUCT_KEYS.includes(sub?.productKey) ? sub.productKey : 'wartung')
 
 export async function getTakeoverRequest(id) {
   return getDocument(COLLECTION(), id)
@@ -638,9 +640,9 @@ export async function runAutoChecks(doc, { allRequests, subscription, calc }) {
     )
   }
 
-  // Plausibilitaet gegen die Monatsgebuehr des Abos des Kunden; Abos ohne productKey (Altbestand) gelten als Wartungs-Abo
+  // Plausibilitaet gegen die Monatsgebuehr des Abos des Kunden (productKeyOf: ohne bzw. mit unbekanntem Schluessel = Wartungs-Abo)
   const monthly = doc.invoiceAmountCents / Math.max(1, doc.billingMonths)
-  const aboCents = getProduct(subscription?.productKey || 'wartung').amountCents
+  const aboCents = getProduct(productKeyOf(subscription)).amountCents
   if (monthly > aboCents) {
     checks.push({
       key: 'amount',
@@ -735,6 +737,8 @@ export async function getAdminDetail(id) {
       ? {
           status: subscription.status,
           active: isActiveSub(subscription),
+          productKey: productKeyOf(subscription),
+          productName: getProduct(productKeyOf(subscription)).name,
           startedAt: subscription.startedAt,
           serviceStart: serviceStartOf(subscription),
           currentPeriodEnd: subscription.currentPeriodEnd,