Backend: Neue API-Endpunkte hinzugefügt
- /api/dashboard/* - Dashboard Übersicht, Cashflow, Steuer-Preview - /api/customers/* - Kunden CRUD API - /api/invoices/* - Rechnungen CRUD API + Zahlungen Server.js angepasst um neue Routen einzubinden.
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const express = require('express');
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const { Pool } = require('pg');
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const router = express.Router();
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// Database pool
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const pool = new Pool({
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host: process.env.DB_HOST || 'db',
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port: process.env.DB_PORT || 5432,
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database: process.env.DB_NAME || 'steuer',
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user: process.env.DB_USER || 'app',
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password: process.env.DB_PASSWORD || 'app123',
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});
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// GET /api/dashboard/summary
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router.get('/summary', async (req, res) => {
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try {
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const currentYear = new Date().getFullYear();
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// Gesamtübersichten parallel abfragen
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const [
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rechnungenResult,
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belegeResult,
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krediteResult,
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stundenResult,
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kundenResult
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] = await Promise.all([
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// Rechnungen dieses Jahr
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pool.query(`
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SELECT
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COUNT(*) as total_count,
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COALESCE(SUM(CASE WHEN status = 'bezahlt' THEN betrag ELSE 0 END), 0) as paid_total,
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COALESCE(SUM(CASE WHEN status = 'offen' THEN betrag ELSE 0 END), 0) as open_total,
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COALESCE(SUM(betrag), 0) as total
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FROM rechnungen
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WHERE EXTRACT(YEAR FROM datum) = $1
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`, [currentYear]),
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// Belege/Ausgaben dieses Jahr
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pool.query(`
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SELECT
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COUNT(*) as total_count,
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COALESCE(SUM(betrag), 0) as total
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FROM belege
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WHERE EXTRACT(YEAR FROM date) = $1
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`, [currentYear]),
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// Kredite
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pool.query(`
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SELECT
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COUNT(*) as total_count,
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COUNT(CASE WHEN status = 'aktiv' THEN 1 END) as active_count,
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COALESCE(SUM(CASE WHEN status = 'aktiv' THEN restschuld ELSE 0 END), 0) as total_restschuld,
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COALESCE(SUM(CASE WHEN status = 'aktiv' THEN monatsrate ELSE 0 END), 0) as total_rate
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FROM kredite
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`),
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// Stunden dieses Jahr
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pool.query(`
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SELECT
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COUNT(*) as total_count,
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COALESCE(SUM(stunden), 0) as total_stunden,
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COALESCE(SUM(betrag), 0) as total_umsatz
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FROM stunden
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WHERE EXTRACT(YEAR FROM datum) = $1
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`, [currentYear]),
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// Kunden
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pool.query(`
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SELECT COUNT(*) as total_count FROM kunden
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`)
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]);
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const rechnungen = rechnungenResult.rows[0];
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const belege = belegeResult.rows[0];
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const kredite = krediteResult.rows[0];
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const stunden = stundenResult.rows[0];
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const kunden = kundenResult.rows[0];
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res.json({
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success: true,
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year: currentYear,
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summary: {
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einnahmen: {
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total: parseFloat(rechnungen.total) || 0,
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paid: parseFloat(rechnungen.paid_total) || 0,
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open: parseFloat(rechnungen.open_total) || 0,
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count: parseInt(rechnungen.total_count) || 0
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},
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ausgaben: {
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total: parseFloat(belege.total) || 0,
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count: parseInt(belege.total_count) || 0
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},
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kredite: {
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total: parseInt(kredite.total_count) || 0,
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active: parseInt(kredite.active_count) || 0,
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restschuld: parseFloat(kredite.total_restschuld) || 0,
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monatsrate: parseFloat(kredite.total_rate) || 0
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},
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stunden: {
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total: parseFloat(stunden.total_stunden) || 0,
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umsatz: parseFloat(stunden.total_umsatz) || 0,
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count: parseInt(stunden.total_count) || 0
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},
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kunden: {
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total: parseInt(kunden.total_count) || 0
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},
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gewinn: (parseFloat(rechnungen.total) || 0) - (parseFloat(belege.total) || 0)
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}
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});
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} catch (error) {
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console.error('Dashboard Summary Error:', error);
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res.status(500).json({ success: false, error: error.message });
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}
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});
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// GET /api/dashboard/cashflow
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router.get('/cashflow', async (req, res) => {
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try {
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const { months = 6 } = req.query;
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// Monatliche Cashflow-Daten
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const cashflowData = [];
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for (let i = months - 1; i >= 0; i--) {
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const date = new Date();
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date.setMonth(date.getMonth() - i);
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const year = date.getFullYear();
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const month = date.getMonth() + 1;
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const [einnahmenResult, ausgabenResult] = await Promise.all([
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pool.query(`
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SELECT COALESCE(SUM(betrag), 0) as total
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FROM rechnungen
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WHERE EXTRACT(YEAR FROM datum) = $1 AND EXTRACT(MONTH FROM datum) = $2
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AND status = 'bezahlt'
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`, [year, month]),
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pool.query(`
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SELECT COALESCE(SUM(betrag), 0) as total
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FROM belege
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WHERE EXTRACT(YEAR FROM date) = $1 AND EXTRACT(MONTH FROM date) = $2
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`, [year, month])
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]);
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const einnahmen = parseFloat(einnahmenResult.rows[0].total) || 0;
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const ausgaben = parseFloat(ausgabenResult.rows[0].total) || 0;
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cashflowData.push({
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year,
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month,
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monthName: date.toLocaleString('de-DE', { month: 'short' }),
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einnahmen,
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ausgaben,
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saldo: einnahmen - ausgaben
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});
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}
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res.json({
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success: true,
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cashflow: cashflowData
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});
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} catch (error) {
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console.error('Dashboard Cashflow Error:', error);
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res.status(500).json({ success: false, error: error.message });
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}
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});
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// GET /api/dashboard/tax-preview
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router.get('/tax-preview', async (req, res) => {
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try {
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const { year = new Date().getFullYear() } = req.query;
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const [einnahmenResult, ausgabenResult, stundenResult] = await Promise.all([
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pool.query(`
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SELECT COALESCE(SUM(betrag), 0) as total
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FROM rechnungen
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WHERE EXTRACT(YEAR FROM datum) = $1 AND status = 'bezahlt'
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`, [year]),
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pool.query(`
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SELECT COALESCE(SUM(betrag), 0) as total
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FROM belege
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WHERE EXTRACT(YEAR FROM date) = $1
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`, [year]),
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pool.query(`
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SELECT COALESCE(SUM(betrag), 0) as total
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FROM stunden
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WHERE EXTRACT(YEAR FROM datum) = $1 AND status = 'bezahlt'
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`, [year])
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]);
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const einnahmen = parseFloat(einnahmenResult.rows[0].total) || 0;
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const ausgaben = parseFloat(ausgabenResult.rows[0].total) || 0;
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const stundenEinnahmen = parseFloat(stundenResult.rows[0].total) || 0;
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const gesamtEinnahmen = einnahmen + stundenEinnahmen;
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const gewinn = gesamtEinnahmen - ausgaben;
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// Vereinfachte Steuerberechnung (nür Hinweis)
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const estVorschuss = gewinn > 0 ? gewinn * 0.25 : 0; // ca. 25% ESt
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res.json({
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success: true,
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year: parseInt(year),
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preview: {
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einnahmen: {
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rechnungen: einnahmen,
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stunden: stundenEinnahmen,
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gesamt: gesamtEinnahmen
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},
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ausgaben,
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gewinn,
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estVorschuss: Math.max(0, estVorschuss)
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}
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});
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} catch (error) {
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console.error('Dashboard Tax Preview Error:', error);
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res.status(500).json({ success: false, error: error.message });
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}
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});
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module.exports = router;
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