Add payment QR code to invoice PDFs

backend/src/modules/serialexecution.service.ts

@@ -405,12 +405,15 @@ async function getCloseData(server:FastifyInstance,item: any, tenant: any, units
 
     console.log(item);
 
-    const [contact, customer, project, contract] = await Promise.all([
+    const [contact, customer, project, contract, bankAccounts] = await Promise.all([
         fetchById(server, schema.contacts, item.contact),
         fetchById(server, schema.customers, item.customer),
         fetchById(server, schema.projects, item.project),
         fetchById(server, schema.contracts, item.contract),
-        item.letterhead ? fetchById(server, schema.letterheads, item.letterhead) : null
+        server.db
+            .select()
+            .from(schema.bankaccounts)
+            .where(and(eq(schema.bankaccounts.tenant, tenant.id), eq(schema.bankaccounts.archived, false), eq(schema.bankaccounts.expired, false)))
 
     ]);
 
@@ -433,7 +436,8 @@ async function getCloseData(server:FastifyInstance,item: any, tenant: any, units
         contract,            // Contract Object
         units,               // Units Array
         products,            // Products Array
-        services             // Services Array
+        services,            // Services Array
+        bankAccounts         // Tenant Bank Accounts
     );
 
 
@@ -528,9 +532,11 @@ export function getDocumentDataBackend(
     contractData: any,   // Vertrag
     units: any[],        // Array aller Einheiten
     products: any[],     // Array aller Produkte
-    services: any[]      // Array aller Services
+    services: any[],     // Array aller Services
+    bankAccounts: any[] = [] // Array aller Bankkonten
 ) {
     const businessInfo = tenant.businessInfo || {}; // Fallback falls leer
+    const paymentQrBankAccount = bankAccounts.find((account: any) => !account.archived && !account.expired && account.iban) || null
 
     // --- 1. Agriculture Logic ---
     // Prüfen ob 'extraModules' existiert, sonst leeres Array annehmen
@@ -724,6 +730,12 @@ export function getDocumentDataBackend(
         },
         agriculture: itemInfo.agriculture,
         // Falls du AdvanceInvoices brauchst, musst du die Objekte hier übergeben oder leer lassen
-        usedAdvanceInvoices: []
+        usedAdvanceInvoices: [],
+        paymentQr: paymentQrBankAccount && itemInfo.payment_type === "transfer" ? {
+            iban: paymentQrBankAccount.iban,
+            recipientName: paymentQrBankAccount.ownerName || businessInfo.name || tenant.name,
+            amount: totals.totalGross,
+            remittance: itemInfo.documentNumber || itemInfo.title,
+        } : null
     };
 }

backend/src/utils/pdf.ts

@@ -5,6 +5,7 @@ import {FastifyInstance} from "fastify";
 import { GetObjectCommand } from "@aws-sdk/client-s3";
 import { s3 } from "./s3";
 import { secrets } from "./secrets";
+import bwipjs from "bwip-js"
 
 const getCoordinatesForPDFLib = (x:number ,y:number, page:any) => {
     /*
@@ -29,6 +30,61 @@ const getRightAlignedX = (rightEdgeMm: number, text: string, size: number, font:
     return getCoordinatesForPDFLib(rightEdgeMm, 0, page).x - font.widthOfTextAtSize(text, size)
 }
 
+const normalizePaymentQrText = (value: any, maxLength: number) => {
+    return String(value || "")
+        .replace(/\r?\n/g, " ")
+        .replace(/[^\x20-\x7EÄÖÜäöüß]/g, "")
+        .trim()
+        .slice(0, maxLength)
+}
+
+const normalizeIban = (value: any) => String(value || "").replace(/\s+/g, "").toUpperCase()
+
+const getPaymentQrAmount = (value: any) => {
+    if (typeof value === "number" && Number.isFinite(value)) return value
+
+    const normalized = String(value || "")
+        .replace(/[^\d,.-]/g, "")
+        .replace(/\./g, "")
+        .replace(",", ".")
+
+    const amount = Number(normalized)
+
+    return Number.isFinite(amount) ? amount : 0
+}
+
+const getPaymentQrCodeBuffer = async (invoiceData: any) => {
+    if (invoiceData?.payment_type && invoiceData.payment_type !== "transfer") return null
+
+    const paymentQr = invoiceData?.paymentQr || {}
+    const iban = normalizeIban(paymentQr.iban)
+    const recipientName = normalizePaymentQrText(paymentQr.recipientName || paymentQr.name, 70)
+    const amount = getPaymentQrAmount(paymentQr.amount ?? invoiceData?.total?.totalSumToPay)
+
+    if (!iban || !recipientName || amount <= 0) return null
+
+    const epcPayload = [
+        "BCD",
+        "002",
+        "1",
+        "SCT",
+        normalizePaymentQrText(paymentQr.bic, 11),
+        recipientName,
+        iban,
+        `EUR${amount.toFixed(2)}`,
+        "",
+        normalizePaymentQrText(paymentQr.remittance || invoiceData?.documentNumber || invoiceData?.title, 140),
+        "",
+    ].join("\n")
+
+    return bwipjs.toBuffer({
+        bcid: "qrcode",
+        text: epcPayload,
+        scale: 4,
+        includetext: false,
+    })
+}
+
 
 const getBackgroundSourceBuffer = async (server:FastifyInstance, path:string) => {
 
@@ -70,6 +126,8 @@ export const createInvoicePDF = async (server:FastifyInstance, returnMode, invoi
 
         const font = await pdfDoc.embedFont(StandardFonts.Helvetica)
         const fontBold = await pdfDoc.embedFont(StandardFonts.HelveticaBold)
+        const paymentQrCodeBuffer = await getPaymentQrCodeBuffer(invoiceData)
+        const paymentQrCode = paymentQrCodeBuffer ? await pdfDoc.embedPng(paymentQrCodeBuffer) : null
 
         let pages = []
         let pageCounter = 1
@@ -923,8 +981,31 @@ export const createInvoicePDF = async (server:FastifyInstance, returnMode, invoi
                 color: rgb(0, 0, 0),
                 lineHeight: 10,
                 opacity: 1,
-                maxWidth: 500
+                maxWidth: paymentQrCode ? 360 : 500
             })
+
+            if (paymentQrCode) {
+                const qrSize = 32 * 2.83
+                const qrPosition = getCoordinatesForPDFLib(166, rowHeight + endTextDiff + (invoiceData.totalArray.length - 3) * 8 - 1, page1)
+
+                pages[pageCounter - 1].drawText("Überweisung per QR-Code", {
+                    y: qrPosition.y + qrSize + 7,
+                    x: getCoordinatesForPDFLib(166, 0, page1).x,
+                    size: 8,
+                    color: rgb(0, 0, 0),
+                    lineHeight: 8,
+                    opacity: 1,
+                    maxWidth: 120,
+                    font: fontBold,
+                })
+
+                pages[pageCounter - 1].drawImage(paymentQrCode, {
+                    x: qrPosition.x,
+                    y: qrPosition.y,
+                    width: qrSize,
+                    height: qrSize,
+                })
+            }
         }
 
         return await pdfDoc.saveAsBase64()

frontend/pages/createDocument/edit/[[id]].vue

@@ -95,6 +95,7 @@ const customers = ref([])
 const contacts = ref([])
 const contracts = ref([])
 const outgoingsepamandates = ref([])
+const bankaccounts = ref([])
 const texttemplates = ref([])
 const units = ref([])
 const tenantUsers = ref([])
@@ -236,6 +237,12 @@ const setupData = async () => {
   contacts.value = await useEntities("contacts").select("*")
   contracts.value = await useEntities("contracts").select("*")
   outgoingsepamandates.value = await useEntities("outgoingsepamandates").select("*")
+  try {
+    bankaccounts.value = await useEntities("bankaccounts").select("*")
+  } catch (error) {
+    console.warn("Bankkonten konnten nicht für den Zahlungs-QR-Code geladen werden", error)
+    bankaccounts.value = []
+  }
   texttemplates.value = await useEntities("texttemplates").select("*")
   units.value = await useEntities("units").selectSpecial("*")
   tenantUsers.value = (await useNuxtApp().$api(`/api/tenant/users`, {
@@ -1365,6 +1372,7 @@ const getDocumentData = async () => {
   let customerData = customers.value.find(i => i.id === itemInfo.value.customer)
   let contactData = contacts.value.find(i => i.id === itemInfo.value.contact)
   let businessInfo = auth.activeTenantData.businessInfo
+  const paymentQrBankAccount = bankaccounts.value.find(account => !account.archived && !account.expired && account.iban)
 
   if (auth.activeTenantData.extraModules.includes("agriculture")) {
     itemInfo.value.rows.forEach(row => {
@@ -1580,7 +1588,13 @@ const getDocumentData = async () => {
     agriculture: itemInfo.value.agriculture,
     usedAdvanceInvoices: itemInfo.value.usedAdvanceInvoices.map(i => {
       return createddocuments.value.find(x => x.id === i)
-    })
+    }),
+    paymentQr: paymentQrBankAccount && itemInfo.value.payment_type === "transfer" ? {
+      iban: paymentQrBankAccount.iban,
+      recipientName: paymentQrBankAccount.ownerName || businessInfo.name || auth.activeTenantData.name,
+      amount: documentTotal.value.totalSumToPay,
+      remittance: itemInfo.value.documentNumber || itemInfo.value.title,
+    } : null
   }
 
   console.log(returnData)