ADD: added e-rechnung

.react-router/types/+routes.ts

@@ -140,6 +140,11 @@ type Pages = {
       "id": string;
     };
   };
+  "/api/invoices/:id/xml": {
+    params: {
+      "id": string;
+    };
+  };
   "/api/reports": {
     params: {};
   };
@@ -148,7 +153,7 @@ type Pages = {
 type RouteFiles = {
   "root.tsx": {
     id: "root";
-    page: "/" | "/login" | "/logout" | "/companies" | "/companies/new" | "/companies/:id" | "/companies/:id/edit" | "/companies/:id/customers" | "/companies/:id/leistungen" | "/companies/:id/invoices" | "/companies/:id/invoices/new" | "/companies/:id/invoices/:invoiceId" | "/companies/:id/invoices/:invoiceId/edit" | "/companies/:id/reports" | "/archiv" | "/settings/password" | "/admin/users" | "/admin/users/new" | "/admin/users/:id" | "/admin/logs" | "/api/companies" | "/api/companies/:id" | "/api/companies/:id/customers" | "/api/companies/:id/invoices" | "/api/customers" | "/api/customers/:id" | "/api/services" | "/api/services/:id" | "/api/invoices" | "/api/invoices/:id" | "/api/invoices/:id/pdf" | "/api/reports";
+    page: "/" | "/login" | "/logout" | "/companies" | "/companies/new" | "/companies/:id" | "/companies/:id/edit" | "/companies/:id/customers" | "/companies/:id/leistungen" | "/companies/:id/invoices" | "/companies/:id/invoices/new" | "/companies/:id/invoices/:invoiceId" | "/companies/:id/invoices/:invoiceId/edit" | "/companies/:id/reports" | "/archiv" | "/settings/password" | "/admin/users" | "/admin/users/new" | "/admin/users/:id" | "/admin/logs" | "/api/companies" | "/api/companies/:id" | "/api/companies/:id/customers" | "/api/companies/:id/invoices" | "/api/customers" | "/api/customers/:id" | "/api/services" | "/api/services/:id" | "/api/invoices" | "/api/invoices/:id" | "/api/invoices/:id/pdf" | "/api/invoices/:id/xml" | "/api/reports";
   };
   "routes/login.tsx": {
     id: "routes/login";
@@ -282,6 +287,10 @@ type RouteFiles = {
     id: "routes/api.invoices.$id.pdf";
     page: "/api/invoices/:id/pdf";
   };
+  "routes/api.invoices.$id.xml.ts": {
+    id: "routes/api.invoices.$id.xml";
+    page: "/api/invoices/:id/xml";
+  };
   "routes/api.reports.ts": {
     id: "routes/api.reports";
     page: "/api/reports";
@@ -323,5 +332,6 @@ type RouteModules = {
   "routes/api.invoices": typeof import("./app/routes/api.invoices.ts");
   "routes/api.invoices.$id": typeof import("./app/routes/api.invoices.$id.ts");
   "routes/api.invoices.$id.pdf": typeof import("./app/routes/api.invoices.$id.pdf.ts");
+  "routes/api.invoices.$id.xml": typeof import("./app/routes/api.invoices.$id.xml.ts");
   "routes/api.reports": typeof import("./app/routes/api.reports.ts");
 };

.react-router/types/app/routes/+types/api.invoices.$id.xml.ts

@@ -0,0 +1,62 @@
+// Generated by React Router
+
+import type { GetInfo, GetAnnotations } from "react-router/internal";
+
+type Module = typeof import("../api.invoices.$id.xml.js")
+
+type Info = GetInfo<{
+  file: "routes/api.invoices.$id.xml.ts",
+  module: Module
+}>
+
+type Matches = [{
+  id: "root";
+  module: typeof import("../../root.js");
+}, {
+  id: "routes/api.invoices.$id.xml";
+  module: typeof import("../api.invoices.$id.xml.js");
+}];
+
+type Annotations = GetAnnotations<Info & { module: Module, matches: Matches }, false>;
+
+export namespace Route {
+  // links
+  export type LinkDescriptors = Annotations["LinkDescriptors"];
+  export type LinksFunction = Annotations["LinksFunction"];
+
+  // meta
+  export type MetaArgs = Annotations["MetaArgs"];
+  export type MetaDescriptors = Annotations["MetaDescriptors"];
+  export type MetaFunction = Annotations["MetaFunction"];
+
+  // headers
+  export type HeadersArgs = Annotations["HeadersArgs"];
+  export type HeadersFunction = Annotations["HeadersFunction"];
+
+  // middleware
+  export type MiddlewareFunction = Annotations["MiddlewareFunction"];
+
+  // clientMiddleware
+  export type ClientMiddlewareFunction = Annotations["ClientMiddlewareFunction"];
+
+  // loader
+  export type LoaderArgs = Annotations["LoaderArgs"];
+
+  // clientLoader
+  export type ClientLoaderArgs = Annotations["ClientLoaderArgs"];
+
+  // action
+  export type ActionArgs = Annotations["ActionArgs"];
+
+  // clientAction
+  export type ClientActionArgs = Annotations["ClientActionArgs"];
+
+  // HydrateFallback
+  export type HydrateFallbackProps = Annotations["HydrateFallbackProps"];
+
+  // Component
+  export type ComponentProps = Annotations["ComponentProps"];
+
+  // ErrorBoundary
+  export type ErrorBoundaryProps = Annotations["ErrorBoundaryProps"];
+}

app/components/invoice/invoice-form.tsx

@@ -276,10 +276,9 @@ export function InvoiceForm({ customers, companyId, onSubmit, defaultValues, def
         </div>
 
         <div className="border border-gray-200 rounded-xl">
-          <div className={`grid gap-2 px-3 py-2 bg-gray-50 border-b border-gray-200 text-xs font-medium text-gray-600 rounded-t-xl ${kleinunternehmer ? "grid-cols-11" : "grid-cols-12"}`}>
+          <div className={`grid gap-2 px-3 py-2 bg-gray-50 border-b border-gray-200 text-xs font-medium text-gray-600 rounded-t-xl ${kleinunternehmer ? "grid-cols-10" : "grid-cols-11"}`}>
             <div className="col-span-4">Beschreibung</div>
             <div className="col-span-1">Menge</div>
-            <div className="col-span-1">Einh.</div>
             <div className="col-span-2">{kleinunternehmer ? "Einzelpreis (brutto)" : "Einzelpreis"}</div>
             {!kleinunternehmer && <div className="col-span-1">MwSt.</div>}
             <div className="col-span-2 text-right">Gesamt (brutto)</div>
@@ -287,7 +286,7 @@ export function InvoiceForm({ customers, companyId, onSubmit, defaultValues, def
           </div>
 
           {fields.map((field, index) => (
-            <div key={field.id} className={`grid gap-2 px-3 py-2.5 border-b border-gray-100 last:border-0 items-center ${kleinunternehmer ? "grid-cols-11" : "grid-cols-12"}`}>
+            <div key={field.id} className={`grid gap-2 px-3 py-2.5 border-b border-gray-100 last:border-0 items-center ${kleinunternehmer ? "grid-cols-10" : "grid-cols-11"}`}>
               <div className="col-span-4 relative">
                 {(() => {
                   const descValue = watchedItems[index]?.description ?? "";
@@ -341,13 +340,6 @@ export function InvoiceForm({ customers, companyId, onSubmit, defaultValues, def
                   onBlur={() => recalcItem(index)}
                 />
               </div>
-              <div className="col-span-1">
-                <Input
-                  {...register(`items.${index}.unit`)}
-                  placeholder="Stück"
-                  className="text-sm"
-                />
-              </div>
               <div className="col-span-2">
                 <Input
                   {...register(`items.${index}.unitPrice`)}

app/components/invoice/invoice-pdf.tsx

@@ -112,8 +112,7 @@ const styles = StyleSheet.create({
   col_pos: { width: "5%" },
   col_desc: { width: "40%" },
   col_qty: { width: "10%", textAlign: "right" },
-  col_unit: { width: "8%", textAlign: "center" },
+  col_price: { width: "22%", textAlign: "right" },
-  col_price: { width: "14%", textAlign: "right" },
   col_tax: { width: "8%", textAlign: "center" },
   col_total: { width: "15%", textAlign: "right" },
   totalsSection: {
@@ -324,7 +323,6 @@ export function InvoicePDFDocument({ invoice }: InvoicePDFProps) {
           <Text style={{ ...styles.tableHeaderText, ...styles.col_pos }}>#</Text>
           <Text style={{ ...styles.tableHeaderText, ...styles.col_desc }}>Beschreibung</Text>
           <Text style={{ ...styles.tableHeaderText, ...styles.col_qty }}>Menge</Text>
-          <Text style={{ ...styles.tableHeaderText, ...styles.col_unit }}>Einh.</Text>
           <Text style={{ ...styles.tableHeaderText, ...styles.col_price }}>
             {invoice.kleinunternehmer ? "EP (brutto)" : "EP (netto)"}
           </Text>
@@ -339,7 +337,6 @@ export function InvoicePDFDocument({ invoice }: InvoicePDFProps) {
             <Text style={{ ...styles.col_pos, fontSize: 9 }}>{item.position}</Text>
             <Text style={{ ...styles.col_desc, fontSize: 9 }}>{item.description}</Text>
             <Text style={{ ...styles.col_qty, fontSize: 9 }}>{n(item.quantity)}</Text>
-            <Text style={{ ...styles.col_unit, fontSize: 9 }}>{item.unit ?? ""}</Text>
             <Text style={{ ...styles.col_price, fontSize: 9 }}>{formatMoney(n(item.unitPrice))}</Text>
             {!invoice.kleinunternehmer && (
               <Text style={{ ...styles.col_tax, fontSize: 9 }}>{n(item.taxRate)}%</Text>

app/routes.ts

@@ -41,5 +41,6 @@ export default [
   route("api/invoices", "routes/api.invoices.ts"),
   route("api/invoices/:id", "routes/api.invoices.$id.ts"),
   route("api/invoices/:id/pdf", "routes/api.invoices.$id.pdf.ts"),
+  route("api/invoices/:id/xml", "routes/api.invoices.$id.xml.ts"),
   route("api/reports", "routes/api.reports.ts"),
 ] satisfies RouteConfig;

app/routes/api.invoices.$id.xml.ts

@@ -0,0 +1,156 @@
+import { getApiUser } from "@/session.server";
+import prisma from "@/lib/prisma.server";
+
+const UNIT_C62 = "C62" as const;
+const UNIT_HUR = "HUR" as const;
+const UNIT_DAY = "DAY" as const;
+const UNIT_MON = "MON" as const;
+const UNIT_ANN = "ANN" as const;
+const UNIT_KMT = "KMT" as const;
+type UnitCode = typeof UNIT_C62 | typeof UNIT_HUR | typeof UNIT_DAY | typeof UNIT_MON | typeof UNIT_ANN | typeof UNIT_KMT;
+
+function toUnitCode(unit: string | null | undefined): UnitCode {
+  if (!unit) return UNIT_C62;
+  const u = unit.toLowerCase().trim();
+  if (u === "stunde" || u === "stunden" || u === "h" || u === "std" || u === "hour") return UNIT_HUR;
+  if (u === "tag" || u === "tage" || u === "day" || u === "days") return UNIT_DAY;
+  if (u === "monat" || u === "monate" || u === "month") return UNIT_MON;
+  if (u === "jahr" || u === "jahre" || u === "year") return UNIT_ANN;
+  if (u === "km") return UNIT_KMT;
+  return UNIT_C62;
+}
+
+export async function loader({ request, params }: { request: Request; params: { id: string } }) {
+  const user = await getApiUser(request);
+  if (!user) return Response.json({ error: "Unauthorized" }, { status: 401 });
+
+  const invoice = await prisma.invoice.findFirst({
+    where: { id: params.id, company: { userId: user.id } },
+    include: {
+      items: { orderBy: { position: "asc" } },
+      customer: true,
+      company: true,
+    },
+  });
+
+  if (!invoice) return Response.json({ error: "Not found" }, { status: 404 });
+
+  const { zugferd } = await import("node-zugferd");
+  const { EN16931 } = await import("node-zugferd/profile");
+
+  const z = zugferd({ profile: EN16931, strict: false });
+
+  const isKleinunternehmer = invoice.kleinunternehmer;
+  const netTotal = Number(invoice.netTotal);
+  const taxTotal = Number(invoice.taxTotal);
+  const grossTotal = Number(invoice.grossTotal);
+
+  // Group taxes by rate for vatBreakdown
+  const taxGroups: Record<number, { basis: number; tax: number }> = {};
+  for (const item of invoice.items) {
+    const rate = Number(item.taxRate);
+    if (!taxGroups[rate]) taxGroups[rate] = { basis: 0, tax: 0 };
+    taxGroups[rate].basis += Number(item.netAmount);
+    taxGroups[rate].tax += Number(item.taxAmount);
+  }
+
+  const vatBreakdown = isKleinunternehmer
+    ? [
+        {
+          calculatedAmount: 0,
+          typeCode: "VAT",
+          basisAmount: netTotal,
+          categoryCode: "E" as const,
+          rateApplicablePercent: 0,
+          exemptionReasonText: "Steuerbefreiung gemäß §19 Abs. 1 UStG",
+        },
+      ]
+    : Object.entries(taxGroups).map(([rate, { basis, tax }]) => ({
+        calculatedAmount: tax,
+        typeCode: "VAT",
+        basisAmount: basis,
+        categoryCode: "S" as const,
+        rateApplicablePercent: Number(rate),
+      }));
+
+  const lines = invoice.items.map((item) => ({
+    tradeProduct: { name: item.description },
+    tradeDelivery: {
+      billedQuantity: {
+        amount: Number(item.quantity),
+        unitMeasureCode: toUnitCode(item.unit),
+      },
+    },
+    tradeAgreement: {
+      netTradePrice: { chargeAmount: Number(item.unitPrice) },
+    },
+    tradeSettlement: {
+      tradeTax: {
+        typeCode: "VAT",
+        categoryCode: (isKleinunternehmer ? "E" : "S") as "E" | "S",
+        rateApplicablePercent: isKleinunternehmer ? 0 : Number(item.taxRate),
+      },
+      monetarySummation: { lineTotalAmount: Number(item.netAmount) },
+    },
+  }));
+
+  const doc = z.create({
+    number: invoice.number ?? invoice.id,
+    typeCode: "380",
+    issueDate: invoice.issueDate,
+    transaction: {
+      tradeAgreement: {
+        seller: {
+          name: invoice.company.name,
+          postalAddress: {
+            ...(invoice.company.zip ? { postCode: invoice.company.zip } : {}),
+            ...(invoice.company.address ? { line1: invoice.company.address } : {}),
+            ...(invoice.company.city ? { city: invoice.company.city } : {}),
+            countryCode: "DE",
+          },
+          taxRegistration: {
+            ...(invoice.company.vatId ? { vatIdentifier: invoice.company.vatId } : {}),
+            ...(invoice.company.taxId ? { localIdentifier: invoice.company.taxId } : {}),
+          },
+        },
+        buyer: {
+          name: invoice.customer.name,
+          postalAddress: {
+            ...(invoice.customer.zip ? { postCode: invoice.customer.zip } : {}),
+            ...(invoice.customer.address ? { line1: invoice.customer.address } : {}),
+            ...(invoice.customer.city ? { city: invoice.customer.city } : {}),
+            countryCode: "DE",
+          },
+        },
+      },
+      tradeDelivery: {
+        ...(invoice.deliveryDate
+          ? { information: { deliveryDate: invoice.deliveryDate } }
+          : {}),
+      },
+      tradeSettlement: {
+        currencyCode: "EUR",
+        paymentTerms: { dueDate: invoice.dueDate },
+        vatBreakdown,
+        monetarySummation: {
+          lineTotalAmount: netTotal,
+          taxBasisTotalAmount: netTotal,
+          taxTotal: { amount: taxTotal, currencyCode: "EUR" as const },
+          grandTotalAmount: grossTotal,
+          duePayableAmount: grossTotal,
+        },
+      },
+      line: lines,
+    },
+  });
+
+  const xml = await doc.toXML();
+
+  return new Response(xml as string, {
+    status: 200,
+    headers: {
+      "Content-Type": "application/xml; charset=utf-8",
+      "Content-Disposition": `attachment; filename="rechnung-${invoice.number ?? invoice.id}.xml"`,
+    },
+  });
+}

app/routes/companies.$id.invoices.$invoiceId.tsx

@@ -168,16 +168,24 @@ export default function InvoiceDetailPage() {
  * It then creates a blob URL from the response and creates a new anchor element with the blob URL and a download attribute with the filename.
  * It then simulates a click event on the anchor element, so the user is prompted to download the PDF file.
  */
-  async function downloadPdf() {
+  async function downloadFile(url: string, filename: string) {
-    const res = await fetch(`/api/invoices/${invoice.id}/pdf`);
+    const res = await fetch(url);
     if (!res.ok) return;
     const blob = await res.blob();
-    const url = URL.createObjectURL(blob);
+    const objectUrl = URL.createObjectURL(blob);
     const a = document.createElement("a");
-    a.href = url;
+    a.href = objectUrl;
-    a.download = `rechnung-${invoice.number ?? invoice.id}.pdf`;
+    a.download = filename;
     a.click();
-    URL.revokeObjectURL(url);
+    URL.revokeObjectURL(objectUrl);
+  }
+
+  function downloadPdf() {
+    return downloadFile(`/api/invoices/${invoice.id}/pdf`, `rechnung-${invoice.number ?? invoice.id}.pdf`);
+  }
+
+  function downloadXml() {
+    return downloadFile(`/api/invoices/${invoice.id}/xml`, `rechnung-${invoice.number ?? invoice.id}.xml`);
   }
 
   return (
@@ -203,9 +211,14 @@ export default function InvoiceDetailPage() {
         {/* Invoice Actions */}
         <div className="flex items-center gap-2">
           {invoice.status !== "DELETED" && (
-            <Button variant="outline" size="sm" onClick={downloadPdf}>
+            <>
-              <Download className="h-4 w-4" /> PDF
+              <Button variant="outline" size="sm" onClick={downloadPdf}>
-            </Button>
+                <Download className="h-4 w-4" /> PDF
+              </Button>
+              <Button variant="outline" size="sm" onClick={downloadXml}>
+                <Download className="h-4 w-4" /> E-Rechnung
+              </Button>
+            </>
           )}
           {invoice.status === "DRAFT" && (
             <Button variant="outline" size="sm" asChild>
@@ -336,9 +349,7 @@ export default function InvoiceDetailPage() {
                       <tr key={item.id} className="hover:bg-gray-50">
                         <td className="px-4 py-3 text-gray-500">{item.position}</td>
                         <td className="px-4 py-3 text-gray-900">{item.description}</td>
-                        <td className="px-4 py-3 text-right text-gray-700">
+                        <td className="px-4 py-3 text-right text-gray-700">{item.quantity}</td>
-                          {item.quantity} {item.unit && <span className="text-gray-500">{item.unit}</span>}
-                        </td>
                         <td className="px-4 py-3 text-right text-gray-700">{formatCurrency(item.unitPrice)}</td>
                         <td className="px-4 py-3 text-right text-gray-700">{item.taxRate}%</td>
                         <td className="px-4 py-3 text-right font-medium text-gray-900">{formatCurrency(item.grossAmount)}</td>

app/routes/companies.$id.leistungen.tsx

@@ -26,7 +26,6 @@ import { TAX_RATES, formatCurrency } from "@/lib/tax";
 const schema = z.object({
   name: z.string().min(1, "Pflichtfeld"),
   description: z.string().optional(),
-  unit: z.string().optional(),
   unitPrice: z.coerce.number({ invalid_type_error: "Ungültiger Betrag" }),
   taxRate: z.coerce.number(),
 });
@@ -36,7 +35,6 @@ interface Service {
   id: string;
   name: string;
   description: string | null;
-  unit: string | null;
   unitPrice: number;
   taxRate: number;
 }
@@ -89,16 +87,10 @@ function ServiceForm({
         <Label>Beschreibung</Label>
         <Input {...register("description")} placeholder="Optionale Leistungsbeschreibung" />
       </div>
-      <div className="grid grid-cols-2 gap-3">
+      <div className="space-y-1.5">
-        <div className="space-y-1.5">
+        <Label>Einzelpreis (€) *</Label>
-          <Label>Einheit</Label>
+        <Input {...register("unitPrice")} type="number" step="0.01" placeholder="0.00" />
-          <Input {...register("unit")} placeholder="Stunde, Stück, ..." />
+        {errors.unitPrice && <p className="text-xs text-red-600">{errors.unitPrice.message}</p>}
-        </div>
-        <div className="space-y-1.5">
-          <Label>Einzelpreis (€) *</Label>
-          <Input {...register("unitPrice")} type="number" step="0.01" placeholder="0.00" />
-          {errors.unitPrice && <p className="text-xs text-red-600">{errors.unitPrice.message}</p>}
-        </div>
       </div>
       <div className="space-y-1.5">
         <Label>Steuersatz</Label>
@@ -127,7 +119,7 @@ function ServiceForm({
   );
 }
 
-type SortKey = "name" | "description" | "unit" | "unitPrice" | "taxRate";
+type SortKey = "name" | "description" | "unitPrice" | "taxRate";
 type SortDir = "asc" | "desc";
 
 export default function LeistungenPage() {
@@ -220,7 +212,6 @@ export default function LeistungenPage() {
               defaultValues={{
                 name: editService.name,
                 description: editService.description ?? undefined,
-                unit: editService.unit ?? undefined,
                 unitPrice: editService.unitPrice,
                 taxRate: editService.taxRate,
               }}
@@ -244,8 +235,8 @@ export default function LeistungenPage() {
             <table className="w-full text-sm">
               <thead>
                 <tr className="border-b border-slate-100 text-xs font-medium text-slate-500 uppercase tracking-wide">
-                  {(["name", "description", "unit", "unitPrice", "taxRate"] as SortKey[]).map((key, i) => {
+                  {(["name", "description", "unitPrice", "taxRate"] as SortKey[]).map((key, i) => {
-                    const labels: Record<SortKey, string> = { name: "Bezeichnung", description: "Beschreibung", unit: "Einheit", unitPrice: "Preis", taxRate: "MwSt." };
+                    const labels: Record<SortKey, string> = { name: "Bezeichnung", description: "Beschreibung", unitPrice: "Preis", taxRate: "MwSt." };
                     const isNum = key === "unitPrice" || key === "taxRate";
                     const active = sortKey === key;
                     const Icon = active ? (sortDir === "asc" ? ChevronUp : ChevronDown) : ChevronsUpDown;
@@ -270,7 +261,6 @@ export default function LeistungenPage() {
                   <tr key={service.id} className="hover:bg-slate-50 transition-colors">
                     <td className="px-4 py-3 font-medium text-slate-800">{service.name}</td>
                     <td className="px-4 py-3 text-slate-500 max-w-xs truncate">{service.description ?? "-"}</td>
-                    <td className="px-4 py-3 text-slate-500">{service.unit ?? "-"}</td>
                     <td className="px-4 py-3 text-right text-slate-800">{formatCurrency(service.unitPrice)}</td>
                     <td className="px-4 py-3 text-right text-slate-500">{service.taxRate}%</td>
                     <td className="px-4 py-3">

package-lock.json

@@ -28,6 +28,7 @@
         "isbot": "^5",
         "lucide-react": "^0.577.0",
         "node-cron": "^4.2.1",
+        "node-zugferd": "^0.1.1-beta.1",
         "prisma": "^5.22.0",
         "react": "^19",
         "react-dom": "^19",
@@ -1288,6 +1289,22 @@
         "@tybys/wasm-util": "^0.10.0"
       }
     },
+    "node_modules/@pdf-lib/standard-fonts": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@pdf-lib/standard-fonts/-/standard-fonts-1.0.0.tgz",
+      "integrity": "sha512-hU30BK9IUN/su0Mn9VdlVKsWBS6GyhVfqjwl1FjZN4TxP6cCw0jP2w7V3Hf5uX7M0AZJ16vey9yE0ny7Sa59ZA==",
+      "dependencies": {
+        "pako": "^1.0.6"
+      }
+    },
+    "node_modules/@pdf-lib/upng": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@pdf-lib/upng/-/upng-1.0.1.tgz",
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+      "dependencies": {
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+      }
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       "resolved": "https://registry.npmjs.org/@prisma/client/-/client-5.22.0.tgz",
@@ -3954,6 +3971,11 @@
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+      "resolved": "https://registry.npmjs.org/defu/-/defu-6.1.4.tgz",
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+    },
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@@ -4419,6 +4441,23 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/fast-xml-parser": {
+      "version": "4.5.4",
+      "resolved": "https://registry.npmjs.org/fast-xml-parser/-/fast-xml-parser-4.5.4.tgz",
+      "integrity": "sha512-jE8ugADnYOBsu1uaoayVl1tVKAMNOXyjwvv2U6udEA2ORBhDooJDWoGxTkhd4Qn4yh59JVVt/pKXtjPwx9OguQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "dependencies": {
+        "strnum": "^1.0.5"
+      },
+      "bin": {
+        "fxparser": "src/cli/cli.js"
+      }
+    },
     "node_modules/file-entry-cache": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-8.0.0.tgz",
@@ -5503,6 +5542,28 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/node-zugferd": {
+      "version": "0.1.1-beta.1",
+      "resolved": "https://registry.npmjs.org/node-zugferd/-/node-zugferd-0.1.1-beta.1.tgz",
+      "integrity": "sha512-FTX2SMSl2qT0C0iwfggdYcwoPBndTyqP7SiQyW9ClkLFwTPTm4ZUSpn4eqwBcrc2wFGLrEtr+w+s7602JCcG6Q==",
+      "dependencies": {
+        "defu": "^6.1.4",
+        "fast-xml-parser": "^4.5.1",
+        "pdf-lib": "^1.17.1",
+        "zod": "^3.24.1"
+      },
+      "optionalDependencies": {
+        "xsd-schema-validator": "^0.10.0"
+      }
+    },
+    "node_modules/node-zugferd/node_modules/zod": {
+      "version": "3.25.76",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
     "node_modules/normalize-svg-path": {
       "version": "1.1.0",
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@@ -5678,6 +5739,22 @@
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       "dev": true
     },
+    "node_modules/pdf-lib": {
+      "version": "1.17.1",
+      "resolved": "https://registry.npmjs.org/pdf-lib/-/pdf-lib-1.17.1.tgz",
+      "integrity": "sha512-V/mpyJAoTsN4cnP31vc0wfNA1+p20evqqnap0KLoRUN0Yk/p3wN52DOEsL4oBFcLdb76hlpKPtzJIgo67j/XLw==",
+      "dependencies": {
+        "@pdf-lib/standard-fonts": "^1.0.0",
+        "@pdf-lib/upng": "^1.0.1",
+        "pako": "^1.0.11",
+        "tslib": "^1.11.1"
+      }
+    },
+    "node_modules/pdf-lib/node_modules/tslib": {
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
+      "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg=="
+    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -6357,6 +6434,17 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/strnum": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/strnum/-/strnum-1.1.2.tgz",
+      "integrity": "sha512-vrN+B7DBIoTTZjnPNewwhx6cBA/H+IS7rfW68n7XxC1y7uoiGQBxaKzqucGUgavX15dJgiGztLJ8vxuEzwqBdA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ]
+    },
     "node_modules/supports-color": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
@@ -6885,6 +6973,43 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/xsd-schema-validator": {
+      "version": "0.10.0",
+      "resolved": "https://registry.npmjs.org/xsd-schema-validator/-/xsd-schema-validator-0.10.0.tgz",
+      "integrity": "sha512-G1GtYp9Smww5D9U3QJy/uMeoaDlEYg5BR4qZYSBZWa/5TG5az2j3Np27uLKaRcg6ajwe3Ew6SJrAo3B/QFrgdg==",
+      "hasInstallScript": true,
+      "optional": true,
+      "dependencies": {
+        "which": "^5.0.0"
+      },
+      "engines": {
+        "node": ">= 18"
+      }
+    },
+    "node_modules/xsd-schema-validator/node_modules/isexe": {
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/isexe/-/isexe-3.1.5.tgz",
+      "integrity": "sha512-6B3tLtFqtQS4ekarvLVMZ+X+VlvQekbe4taUkf/rhVO3d/h0M2rfARm/pXLcPEsjjMsFgrFgSrhQIxcSVrBz8w==",
+      "optional": true,
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/xsd-schema-validator/node_modules/which": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/which/-/which-5.0.0.tgz",
+      "integrity": "sha512-JEdGzHwwkrbWoGOlIHqQ5gtprKGOenpDHpxE9zVR1bWbOtYRyPPHMe9FaP6x61CmNaTThSkb0DAJte5jD+DmzQ==",
+      "optional": true,
+      "dependencies": {
+        "isexe": "^3.1.1"
+      },
+      "bin": {
+        "node-which": "bin/which.js"
+      },
+      "engines": {
+        "node": "^18.17.0 || >=20.5.0"
+      }
+    },
     "node_modules/yallist": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",

package.json

@@ -40,6 +40,7 @@
     "isbot": "^5",
     "lucide-react": "^0.577.0",
     "node-cron": "^4.2.1",
+    "node-zugferd": "^0.1.1-beta.1",
     "prisma": "^5.22.0",
     "react": "^19",
     "react-dom": "^19",