Admin: Reiter E-Mail-Speicher, Abo mit Produkt; Schnittstelle fürs Ticketsystem

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

server/routes/admin/customers.js

@@ -1,5 +1,7 @@
 import { Router } from 'express'
 import { requireAppwriteStaff } from '../../middleware/appwriteStaff.js'
+import { PRODUCT_KEYS } from '../../services/products.js'
+import { ACTIVE_STATUSES, getCurrentSubscription } from '../../services/stripeBilling.js'
 import {
   createCustomerWithPortalAccess,
   deleteCustomerWithPortalAccess,
@@ -41,6 +43,23 @@ router.patch('/:customerId', async (req, res) => {
   }
 })
 
+// Schnittstelle fuers Ticketsystem (Task 13): Produkt und Stand des Abos eines Kunden. WOMS liest daraus,
+// ob der Kunde ein Wartungs-Abo hat (Arbeitszeit-Kontingent). Altbestand ohne productKey gilt als
+// Wartungs-Abo (wie offers.js/takeoverCredits.js); ohne Abo productKey null.
+router.get('/:customerId/abo', async (req, res) => {
+  try {
+    const sub = await getCurrentSubscription(req.params.customerId)
+    if (!sub) return res.json({ productKey: null, active: false })
+    return res.json({
+      productKey: PRODUCT_KEYS.includes(sub.productKey) ? sub.productKey : 'wartung',
+      active: ACTIVE_STATUSES.has(sub.status),
+    })
+  } catch (err) {
+    const status = err.status || 500
+    return res.status(status).json({ error: err.message || 'Abo konnte nicht geladen werden' })
+  }
+})
+
 router.delete('/:customerId', async (req, res) => {
   try {
     return res.json(await deleteCustomerWithPortalAccess(req.params.customerId))