feat: add update price modifier for existing customers based on last license date

shop/app/order/success/page.tsx

@@ -1,7 +1,7 @@
 import { createClient } from '@/lib/supabase/server'
 import { redirect } from 'next/navigation'
 import Link from 'next/link'
-import { CheckCircle2, Download, ExternalLink, ShoppingBag, ArrowRight } from 'lucide-react'
+import { CheckCircle2, Download, ExternalLink, ShoppingBag, ArrowRight, Calendar } from 'lucide-react'
 import { Button } from '@/components/ui/button'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
 import { Separator } from '@/components/ui/separator'
@@ -110,6 +110,33 @@ export default async function OrderSuccessPage({
               </span>
             </div>
 
+            {o.order_data?.price_multiplier !== null && o.order_data?.price_multiplier !== undefined && (
+              <div className="text-sm text-green-400 font-semibold bg-green-500/10 p-3 rounded-lg border border-green-500/20 space-y-1">
+                <p>Update-Rabatt angewendet:</p>
+                <p className="text-xs font-normal text-slate-300">
+                  {o.order_data.price_multiplier === 0
+                    ? "Update (0-12 Monate): 100% Rabatt (inklusive)"
+                    : o.order_data.price_multiplier === 0.15
+                    ? "Update (13-14 Monate): 15% vom Listenpreis"
+                    : o.order_data.price_multiplier === 0.30
+                    ? "Update (15-25 Monate): 30% vom Listenpreis"
+                    : o.order_data.price_multiplier === 0.45
+                    ? "Update (26-37 Monate): 45% vom Listenpreis"
+                    : o.order_data.price_multiplier === 0.60
+                    ? "Update (38-49 Monate): 60% vom Listenpreis"
+                    : o.order_data.price_multiplier === 0.90
+                    ? "Neukauf (>= 50 Monate): 10% Rabatt"
+                    : `Gebühr: ${o.order_data.price_multiplier * 100}%`}
+                </p>
+                {o.order_data.last_license_date && (
+                  <p className="text-xs font-normal text-slate-400 flex items-center gap-1">
+                    <Calendar className="w-3.5 h-3.5 text-primary" />
+                    Letzte Lizenz vom: {new Date(o.order_data.last_license_date).toLocaleDateString('de-DE')}
+                  </p>
+                )}
+              </div>
+            )}
+
             <Separator className="bg-white/10" />
 
             {/* Kundendaten */}

shop/components/invoice-pdf.tsx

@@ -134,6 +134,32 @@ export const InvoicePDF = ({ order, orderSnapshot, customer }: any) => {
           <Text>Datum: {new Date(order.created_at || Date.now()).toLocaleDateString('de-DE')}</Text>
         </View>
 
+        {orderSnapshot?.price_multiplier !== null && orderSnapshot?.price_multiplier !== undefined && (
+          <View style={[styles.section, { backgroundColor: '#f9f9f9', padding: 8 }]}>
+            <Text style={styles.label}>Update-Konditionen</Text>
+            <Text style={{ fontWeight: 'bold' }}>
+              {orderSnapshot.price_multiplier === 0
+                ? "Update (0-12 Monate): 100% Rabatt (inklusive)"
+                : orderSnapshot.price_multiplier === 0.15
+                ? "Update (13-14 Monate): 15% vom Listenpreis"
+                : orderSnapshot.price_multiplier === 0.30
+                ? "Update (15-25 Monate): 30% vom Listenpreis"
+                : orderSnapshot.price_multiplier === 0.45
+                ? "Update (26-37 Monate): 45% vom Listenpreis"
+                : orderSnapshot.price_multiplier === 0.60
+                ? "Update (38-49 Monate): 60% vom Listenpreis"
+                : orderSnapshot.price_multiplier === 0.90
+                ? "Neukauf (>= 50 Monate): 10% Rabatt auf Neukauf"
+                : `Gebühr: ${orderSnapshot.price_multiplier * 100}%`}
+            </Text>
+            {orderSnapshot.last_license_date && (
+              <Text style={{ marginTop: 2, color: '#666' }}>
+                Letzte Lizenz vom: {new Date(orderSnapshot.last_license_date).toLocaleDateString('de-DE')}
+              </Text>
+            )}
+          </View>
+        )}
+
         <View style={styles.table}>
           <View style={[styles.tableRow, { backgroundColor: '#f9f9f9' }]}>
             <View style={styles.tableCol}><Text style={{ fontWeight: 'bold' }}>Beschreibung</Text></View>

shop/components/order-wizard.tsx

@@ -113,6 +113,37 @@ export function OrderWizard({
   // Modulmengen (moduleId -> Menge)
   const [moduleQuantities, setModuleQuantities] = useState<Record<string, number>>({})
 
+  // Datum der letzten Lizenz (Bestandskunden-Update-Logik)
+  const [lastLicenseDate, setLastLicenseDate] = useState<string>("")
+
+  const lastLicenseMonths = useMemo(() => {
+    if (!lastLicenseDate || customerMode !== 'select' || !selectedEndCustomerId) return null
+    const lastDate = new Date(lastLicenseDate)
+    const today = new Date()
+    const yearsDiff = today.getFullYear() - lastDate.getFullYear()
+    const monthsDiff = today.getMonth() - lastDate.getMonth()
+    return yearsDiff * 12 + monthsDiff
+  }, [lastLicenseDate, customerMode, selectedEndCustomerId])
+
+  const updatePriceModifier = useMemo(() => {
+    if (lastLicenseMonths === null || selectedBillingInterval === 'monthly') {
+      return { multiplier: 1, discount: 0, label: null }
+    }
+    if (lastLicenseMonths <= 12) {
+      return { multiplier: 0, discount: 1, label: "Update (0-12 Mon.): 100% Rabatt (inklusive)" }
+    } else if (lastLicenseMonths <= 14) {
+      return { multiplier: 0.15, discount: 0.85, label: "Update (13-14 Mon.): 15% vom Listenpreis" }
+    } else if (lastLicenseMonths <= 25) {
+      return { multiplier: 0.30, discount: 0.70, label: "Update (15-25 Mon.): 30% vom Listenpreis" }
+    } else if (lastLicenseMonths <= 37) {
+      return { multiplier: 0.45, discount: 0.55, label: "Update (26-37 Mon.): 45% vom Listenpreis" }
+    } else if (lastLicenseMonths <= 49) {
+      return { multiplier: 0.60, discount: 0.40, label: "Update (38-49 Mon.): 60% vom Listenpreis" }
+    } else {
+      return { multiplier: 0.90, discount: 0.10, label: "Neukauf (>= 50 Mon.): 10% Rabatt" }
+    }
+  }, [lastLicenseMonths, selectedBillingInterval])
+
   // Per-category selection map: categoryId -> { productId, moduleIds }
   const [selections, setSelections] = useState<Record<string, CategorySelection>>(() => {
     const init: Record<string, CategorySelection> = {}
@@ -203,8 +234,12 @@ export function OrderWizard({
         monthly += totalItem
       }
     }
+    // Apply update modifier to oneTime total
+    if (updatePriceModifier.multiplier !== 1) {
+      oneTime = oneTime * updatePriceModifier.multiplier
+    }
     return { monthlyTotal: monthly, oneTimeTotal: oneTime }
-  }, [selections, products, categories, moduleQuantities])
+  }, [selections, products, categories, moduleQuantities, updatePriceModifier])
 
   // Helper: update product selection for a category (resets modules)
   function selectProduct(catId: string, productId: string) {
@@ -280,6 +315,7 @@ export function OrderWizard({
         endCustomerId: selectedEndCustomerId,
         endCustomer: selectedEndCustomer,
         billingInterval: selectedBillingInterval,
+        lastLicenseDate: lastLicenseDate || null,
       })
       router.push(`/order/success?id=${order.id}`)
     } catch (error) {
@@ -401,6 +437,24 @@ export function OrderWizard({
                         ))}
                       </div>
                     )}
+                    {selectedEndCustomerId && (
+                      <div className="p-4 rounded-xl bg-white/5 border border-white/10 space-y-3 mt-4 max-w-md">
+                        <Label htmlFor="last-license-date" className="text-white font-medium flex items-center gap-2">
+                          <Calendar className="w-4 h-4 text-primary" />
+                          Datum der letzten CAS-Lizenz (falls vorhanden)
+                        </Label>
+                        <Input
+                          id="last-license-date"
+                          type="date"
+                          value={lastLicenseDate}
+                          onChange={e => setLastLicenseDate(e.target.value)}
+                          className="bg-[#0b1329] border-white/10 text-white focus:border-primary"
+                        />
+                        <p className="text-xs text-slate-400">
+                          Falls dieser Kunde bereits Lizenzen besitzt, tragen Sie das Datum der letzten Lizenzierung ein. Damit werden die korrekten Update-Gebühren ermittelt.
+                        </p>
+                      </div>
+                    )}
                   </div>
                 )}
 
@@ -819,6 +873,15 @@ export function OrderWizard({
                         </span>
                       </div>
                     )}
+                    {updatePriceModifier.label && (
+                      <div className="text-xs text-green-400 bg-green-500/10 p-2.5 rounded-lg border border-green-500/20 space-y-1">
+                        <p className="font-semibold flex items-center gap-1">
+                          <Check className="w-3.5 h-3.5" />
+                          Update-Rabatt aktiv
+                        </p>
+                        <p>{updatePriceModifier.label}</p>
+                      </div>
+                    )}
                     {!allCategoriesFilled && (
                       <p className="text-xs text-destructive flex items-center gap-1">
                         <AlertCircle className="w-3 h-3" />
@@ -920,6 +983,12 @@ export function OrderWizard({
                         <p>{[selectedEndCustomer.first_name, selectedEndCustomer.last_name].filter(Boolean).join(' ')}</p>
                         <p>{[selectedEndCustomer.street, selectedEndCustomer.zip, selectedEndCustomer.city].filter(Boolean).join(', ')}</p>
                         <p className="text-xs text-slate-500 mt-1">Endkunde Ihres Partners</p>
+                        {lastLicenseDate && (
+                          <p className="text-xs text-slate-400 flex items-center gap-1 mt-1 font-mono">
+                            <Calendar className="w-3.5 h-3.5 text-primary" />
+                            Letzte Lizenz vom: {new Date(lastLicenseDate).toLocaleDateString('de-DE')}
+                          </p>
+                        )}
                       </>
                     ) : (
                       <>
@@ -938,6 +1007,11 @@ export function OrderWizard({
                         {new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(oneTimeTotal)}
                       </span>
                     </div>
+                    {updatePriceModifier.label && (
+                      <div className="text-sm text-green-400 font-semibold bg-green-500/10 p-2 rounded border border-green-500/20 my-1">
+                        {updatePriceModifier.label}
+                      </div>
+                    )}
                     <div className="flex justify-between text-lg font-bold text-white">
                       <span className="text-slate-400">Monatlicher Gesamtbetrag:</span>
                       <span>
@@ -947,11 +1021,18 @@ export function OrderWizard({
                     </div>
                   </div>
                 ) : oneTimeTotal > 0 ? (
-                  <div className="flex justify-between text-xl font-bold text-gradient border-t border-white/10 pt-4">
+                  <div className="flex flex-col border-t border-white/10 pt-4 gap-1.5">
-                    <span>Gesamtbetrag:</span>
+                    <div className="flex justify-between text-xl font-bold text-gradient">
-                    <span>
+                      <span>Gesamtbetrag:</span>
-                      {new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(oneTimeTotal)}
+                      <span>
-                    </span>
+                        {new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(oneTimeTotal)}
+                      </span>
+                    </div>
+                    {updatePriceModifier.label && (
+                      <div className="text-sm text-green-400 font-semibold bg-green-500/10 p-2 rounded border border-green-500/20 self-end">
+                        {updatePriceModifier.label}
+                      </div>
+                    )}
                   </div>
                 ) : (
                   <div className="flex justify-between text-xl font-bold text-gradient border-t border-white/10 pt-4">

shop/lib/actions/orders.ts

@@ -57,8 +57,9 @@ export async function submitOrder(params: {
   endCustomerId?: string | null
   endCustomer?: EndCustomer | null
   billingInterval?: 'one_time' | 'monthly'
+  lastLicenseDate?: string | null
 }): Promise<Order> {
-  const { selections, moduleQuantities, customerProfile, endCustomerId, endCustomer, billingInterval } = params
+  const { selections, moduleQuantities, customerProfile, endCustomerId, endCustomer, billingInterval, lastLicenseDate } = params
   const supabase = await createClient()
 
   const { data: { user } } = await supabase.auth.getUser()
@@ -139,7 +140,7 @@ export async function submitOrder(params: {
   // 1. Snapshots aufbauen
   // Wenn Endkunde vorhanden: dessen Daten einfrieren; sonst Partner-Profil (Fallback)
   const customerSnapshot = buildCustomerSnapshot(customerProfile, endCustomer ?? null)
-  const orderSnapshot = buildOrderSnapshot(selections, dbProducts, dbCategories, billingInterval, moduleQuantities)
+  const orderSnapshot = buildOrderSnapshot(selections, dbProducts, dbCategories, billingInterval, moduleQuantities, lastLicenseDate)
 
   // 2. Idempotenz-Guard: Prüfen ob identische Bestellung in den letzten 30s existiert
   const orderHash = hashOrderSnapshot(orderSnapshot)

shop/lib/license-transform.ts

@@ -86,7 +86,8 @@ export function buildOrderSnapshot(
   products: Product[],
   categories: Category[],
   billingInterval?: 'one_time' | 'monthly',
-  moduleQuantities?: Record<string, number>
+  moduleQuantities?: Record<string, number>,
+  lastLicenseDate?: string | null
 ): OrderSnapshot {
   const items: OrderItem[] = []
   let subtotal = 0
@@ -131,14 +132,43 @@ export function buildOrderSnapshot(
     })
   }
 
-  const taxAmount = Math.round(subtotal * (dominantTaxRate / 100) * 100) / 100
-  const total = Math.round((subtotal + taxAmount) * 100) / 100
-
   // Wenn billingInterval übergeben, dieses nutzen; sonst automatisch ermitteln
   const billingCycle = billingInterval || (items.every((i) => i.billing_interval === 'one_time')
     ? 'one_time'
     : 'monthly')
 
+  let multiplier = 1
+  if (lastLicenseDate && billingCycle === 'one_time') {
+    const lastDate = new Date(lastLicenseDate)
+    const today = new Date()
+    const yearsDiff = today.getFullYear() - lastDate.getFullYear()
+    const monthsDiff = today.getMonth() - lastDate.getMonth()
+    const months = yearsDiff * 12 + monthsDiff
+
+    if (months <= 12) {
+      multiplier = 0
+    } else if (months <= 14) {
+      multiplier = 0.15
+    } else if (months <= 25) {
+      multiplier = 0.30
+    } else if (months <= 37) {
+      multiplier = 0.45
+    } else if (months <= 49) {
+      multiplier = 0.60
+    } else {
+      multiplier = 0.90
+    }
+
+    // Multiply item_total in items by multiplier
+    items.forEach(item => {
+      item.item_total = item.item_total * multiplier
+    })
+    subtotal = subtotal * multiplier
+  }
+
+  const taxAmount = Math.round(subtotal * (dominantTaxRate / 100) * 100) / 100
+  const total = Math.round((subtotal + taxAmount) * 100) / 100
+
   return {
     schema_version: 1,
     billing_cycle: billingCycle,
@@ -147,6 +177,8 @@ export function buildOrderSnapshot(
     tax_rate: dominantTaxRate,
     tax_amount: taxAmount,
     total,
+    last_license_date: lastLicenseDate || null,
+    price_multiplier: lastLicenseDate && billingCycle === 'one_time' ? multiplier : null,
   }
 }
 

shop/lib/types.ts

@@ -132,6 +132,8 @@ export type OrderSnapshot = {
   tax_rate: number
   tax_amount: number
   total: number
+  last_license_date?: string | null
+  price_multiplier?: number | null
 }
 
 // ─── DB-Zeile (orders-Tabelle) ────────────────────────────────────────────────