feat: add unique license number check for devices

shop/components/order-wizard.tsx

@@ -6,6 +6,7 @@ import { AnimatePresence, motion } from 'framer-motion'
 import { Product, ProductModule, Profile, EndCustomer, Order } from '@/lib/types'
 import { submitOrder, updateOrder } from '@/lib/actions/orders'
 import { createEndCustomer } from '@/lib/actions/end-customers'
+import { isLicenseNumberTaken } from '@/lib/actions/queries'
 import { Category } from '@/lib/types'
 import { Check } from 'lucide-react'
 
@@ -166,6 +167,7 @@ export function OrderWizard({
     if (upgradeMode && lockedDeviceId) return `${lockedDeviceId} – Upgrade`
     return ''
   })
+  const [licenseNumber, setLicenseNumber] = useState<string>('')
   const [editingIdx, setEditingIdx] = useState<number | null>(null)
   const [orderNotes, setOrderNotes] = useState<string>('')
   const [toast, setToast] = useState<{ message: string; type: 'error' | 'success' } | null>(null)
@@ -593,9 +595,27 @@ export function OrderWizard({
     }
   }
 
-  const addToBasket = () => {
+  const addToBasket = async () => {
+    const normLicense = licenseNumber.trim().toUpperCase()
+    if (normLicense) {
+      const isDuplicateInBasket = basketItems.some(
+        (item, idx) => idx !== editingIdx && item.licenseNumber?.toUpperCase().trim() === normLicense
+      )
+      if (isDuplicateInBasket) {
+        setToast({ message: `Lizenznummer "${licenseNumber}" ist bereits im aktuellen Warenkorb vorhanden.`, type: 'error' })
+        return
+      }
+
+      const isTaken = await isLicenseNumberTaken(normLicense, initialOrder?.id)
+      if (isTaken) {
+        setToast({ message: `Lizenznummer "${licenseNumber}" wird bereits von einer anderen Bestellung verwendet.`, type: 'error' })
+        return
+      }
+    }
+
     const currentItem = {
       deviceName: deviceName || (editingIdx !== null ? basketItems[editingIdx]?.deviceName : `Kasse ${basketItems.length + 1}`),
+      licenseNumber: normLicense,
       selections: JSON.parse(JSON.stringify(selections)),
       moduleQuantities: { ...moduleQuantities },
       billingInterval: selectedBillingInterval,
@@ -614,6 +634,7 @@ export function OrderWizard({
 
     // Reset current form config
     setDeviceName('')
+    setLicenseNumber('')
     setModuleQuantities({})
     const resetSels: Record<string, CategorySelection> = {}
     categories.forEach(cat => {
@@ -636,6 +657,7 @@ export function OrderWizard({
     setSelections(item.selections)
     setModuleQuantities(item.moduleQuantities)
     setDeviceName(item.deviceName)
+    setLicenseNumber(item.licenseNumber || '')
     setSelectedBillingInterval(item.billingInterval)
   }
 
@@ -644,6 +666,7 @@ export function OrderWizard({
       setEditingIdx(null)
       setModuleQuantities({})
       setDeviceName('')
+      setLicenseNumber('')
 
       const resetSels: Record<string, CategorySelection> = {}
       categories.forEach(cat => {
@@ -668,8 +691,24 @@ export function OrderWizard({
     try {
       let finalItems = [...basketItems]
       if (hasActiveSelection && allCategoriesFilled && productValidationErrors.length === 0) {
+        const normLicense = licenseNumber.trim().toUpperCase()
+        if (normLicense) {
+          const isDuplicateInBasket = basketItems.some(
+            (item, idx) => idx !== editingIdx && item.licenseNumber?.toUpperCase().trim() === normLicense
+          )
+          if (isDuplicateInBasket) {
+            throw new Error(`Lizenznummer "${licenseNumber}" ist bereits im aktuellen Warenkorb vorhanden.`)
+          }
+
+          const isTaken = await isLicenseNumberTaken(normLicense, initialOrder?.id)
+          if (isTaken) {
+            throw new Error(`Lizenznummer "${licenseNumber}" wird bereits von einer anderen Bestellung verwendet.`)
+          }
+        }
+
         const currentItem = {
           deviceName: deviceName || (editingIdx !== null ? basketItems[editingIdx]?.deviceName : `Kasse ${basketItems.length + 1}`),
+          licenseNumber: normLicense,
           selections: JSON.parse(JSON.stringify(selections)),
           moduleQuantities: { ...moduleQuantities },
           billingInterval: selectedBillingInterval,
@@ -685,6 +724,20 @@ export function OrderWizard({
         throw new Error('Bitte konfigurieren Sie mindestens eine Kasse.')
       }
 
+      // Check all license numbers in finalItems for duplicates
+      const licenseNumbers = finalItems.map(item => item.licenseNumber?.toUpperCase().trim()).filter(Boolean)
+      const uniqueLicenses = new Set(licenseNumbers)
+      if (uniqueLicenses.size !== licenseNumbers.length) {
+        throw new Error('Eine Lizenznummer darf im Warenkorb nicht mehrfach verwendet werden.')
+      }
+
+      for (const lic of uniqueLicenses) {
+        const isTaken = await isLicenseNumberTaken(lic, initialOrder?.id)
+        if (isTaken) {
+          throw new Error(`Die Lizenznummer "${lic}" wird bereits von einer anderen Bestellung verwendet.`)
+        }
+      }
+
       const res = await fetch('/api/orders/checkout', {
         method: 'POST',
         headers: {
@@ -1002,6 +1055,8 @@ export function OrderWizard({
                     deleteBasketItem={deleteBasketItem}
                     deviceName={deviceName}
                     setDeviceName={setDeviceName}
+                    licenseNumber={licenseNumber}
+                    setLicenseNumber={setLicenseNumber}
                     addToBasket={addToBasket}
                     isNextStepDisabled={isNextStepDisabled}
                     hasActiveSelection={hasActiveSelection}