Wasserzähler QR-Code System + Serienbrief + Admin Import
- Wasserzähler-Stammdaten Import (Drag & Drop Excel/CSV) - QR-Code Druckseite mit Browser-Vorschau - QR-Code Excel Download (ExcelJS, eingebettete QR-PNGs) - Serienbrief wie Vorlage wasserablesung.pdf - HTML-Vorschau (max 20) + PDF Download (PDFKit, 1000+ skalierbar) - Antwortkarte mit QR-Code, Briefmarke, Zählerdaten - Bürgerseite: nur Kundennr./Zählernr./Stand (Datenschutz) - Kundennummer + letzter_stand + letzte_ablesung zum Schema - Bürgermeister: Patrick Krutzler - CAPTCHA verify API Route Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Michael
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src/app/api/zaehler-qrcodes-excel/route.ts
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src/app/api/zaehler-qrcodes-excel/route.ts
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import { NextResponse } from 'next/server';
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import { createServiceClient, createServerSupabaseClient } from '@/lib/supabase/server';
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import QRCode from 'qrcode';
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import ExcelJS from 'exceljs';
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const BASE_URL = process.env.NEXT_PUBLIC_BASE_URL || 'https://gemeindeportal.vercel.app';
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export async function GET() {
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try {
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// Auth check
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const authClient = await createServerSupabaseClient();
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const { data: { user } } = await authClient.auth.getUser();
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if (!user) {
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return NextResponse.json({ error: 'Nicht authentifiziert.' }, { status: 401 });
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}
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const supabase = createServiceClient();
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const { data: zaehler, error } = await supabase
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.from('wasserzaehler')
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.select('*')
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.order('kundennummer', { ascending: true });
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if (error || !zaehler || zaehler.length === 0) {
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return NextResponse.json(
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{ error: 'Keine Wasserzähler gefunden.' },
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{ status: 404 }
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);
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}
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// Create workbook
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const workbook = new ExcelJS.Workbook();
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workbook.creator = 'Gemeindeportal';
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workbook.created = new Date();
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// --- Sheet 1: Übersicht (Tabelle mit allen Kunden) ---
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const listSheet = workbook.addWorksheet('Übersicht', {
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pageSetup: {
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paperSize: 9, // A4
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orientation: 'landscape',
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fitToPage: true,
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fitToWidth: 1,
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fitToHeight: 0,
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},
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});
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listSheet.columns = [
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{ header: 'Kundennummer', key: 'kundennummer', width: 18 },
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{ header: 'Zählernummer', key: 'zaehlernummer', width: 18 },
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{ header: 'Name', key: 'name', width: 28 },
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{ header: 'Adresse', key: 'adresse', width: 30 },
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{ header: 'Letzter Stand (m³)', key: 'stand', width: 18 },
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{ header: 'QR-Code URL', key: 'url', width: 55 },
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];
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// Header styling
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const headerRow = listSheet.getRow(1);
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headerRow.font = { bold: true, size: 11 };
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headerRow.fill = {
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type: 'pattern',
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pattern: 'solid',
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fgColor: { argb: 'FF0D2B4E' },
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};
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headerRow.font = { bold: true, size: 11, color: { argb: 'FFFFFFFF' } };
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headerRow.alignment = { vertical: 'middle' };
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headerRow.height = 28;
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for (const z of zaehler) {
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const url = `${BASE_URL}/wasserzaehler?token=${z.access_token}`;
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listSheet.addRow({
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kundennummer: z.kundennummer || '',
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zaehlernummer: z.zaehlernummer,
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name: z.haushalt_name,
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adresse: z.adresse || '',
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stand: z.alter_stand,
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url,
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});
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}
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// Auto-filter
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listSheet.autoFilter = {
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from: { row: 1, column: 1 },
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to: { row: zaehler.length + 1, column: 6 },
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};
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// --- Sheet 2+: Ein Blatt pro Kunde mit QR-Code (Druckseiten) ---
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for (let i = 0; i < zaehler.length; i++) {
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const z = zaehler[i];
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const url = `${BASE_URL}/wasserzaehler?token=${z.access_token}`;
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// Generate QR code as PNG buffer
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const qrBuffer = await QRCode.toBuffer(url, {
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width: 400,
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margin: 2,
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errorCorrectionLevel: 'M',
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type: 'png',
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});
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const sheetName = `${z.kundennummer || `Kunde ${i + 1}`}`.slice(0, 31);
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const sheet = workbook.addWorksheet(sheetName, {
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pageSetup: {
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paperSize: 9, // A4
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orientation: 'portrait',
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horizontalCentered: true,
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verticalCentered: true,
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margins: {
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left: 0.7,
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right: 0.7,
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top: 1.0,
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bottom: 1.0,
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header: 0.3,
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footer: 0.3,
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},
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},
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});
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// Set column widths
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sheet.getColumn(1).width = 5;
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sheet.getColumn(2).width = 25;
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sheet.getColumn(3).width = 35;
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sheet.getColumn(4).width = 5;
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// Title
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sheet.mergeCells('B2:C2');
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const titleCell = sheet.getCell('B2');
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titleCell.value = 'Gemeindeamt Weißkirchen an der Traun';
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titleCell.font = { bold: true, size: 16, color: { argb: 'FF0D2B4E' } };
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titleCell.alignment = { horizontal: 'center', vertical: 'middle' };
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sheet.getRow(2).height = 30;
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// Subtitle
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sheet.mergeCells('B3:C3');
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const subtitleCell = sheet.getCell('B3');
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subtitleCell.value = `Wasserzähler-Ablesung ${new Date().getFullYear()}`;
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subtitleCell.font = { size: 12, color: { argb: 'FF666666' } };
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subtitleCell.alignment = { horizontal: 'center', vertical: 'middle' };
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sheet.getRow(3).height = 22;
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// QR Code image — rows 5-20
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const imageId = workbook.addImage({
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buffer: qrBuffer as unknown as ExcelJS.Buffer,
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extension: 'png',
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});
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sheet.addImage(imageId, {
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tl: { col: 1.5, row: 5 },
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ext: { width: 250, height: 250 },
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});
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// Space for QR code
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for (let row = 5; row <= 20; row++) {
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sheet.getRow(row).height = 18;
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}
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// Customer info below QR code
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const infoStartRow = 22;
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// Kundennummer
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sheet.getCell(`B${infoStartRow}`).value = 'Kundennummer';
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sheet.getCell(`B${infoStartRow}`).font = { size: 10, color: { argb: 'FF999999' } };
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sheet.getCell(`B${infoStartRow}`).alignment = { horizontal: 'center' };
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sheet.mergeCells(`B${infoStartRow}:C${infoStartRow}`);
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sheet.getCell(`B${infoStartRow + 1}`).value = z.kundennummer || '—';
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sheet.getCell(`B${infoStartRow + 1}`).font = { bold: true, size: 22 };
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sheet.getCell(`B${infoStartRow + 1}`).alignment = { horizontal: 'center' };
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sheet.mergeCells(`B${infoStartRow + 1}:C${infoStartRow + 1}`);
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sheet.getRow(infoStartRow + 1).height = 32;
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// Zählernummer
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sheet.getCell(`B${infoStartRow + 3}`).value = 'Zählernummer';
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sheet.getCell(`B${infoStartRow + 3}`).font = { size: 10, color: { argb: 'FF999999' } };
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sheet.getCell(`B${infoStartRow + 3}`).alignment = { horizontal: 'center' };
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sheet.mergeCells(`B${infoStartRow + 3}:C${infoStartRow + 3}`);
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sheet.getCell(`B${infoStartRow + 4}`).value = z.zaehlernummer;
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sheet.getCell(`B${infoStartRow + 4}`).font = { bold: true, size: 16 };
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sheet.getCell(`B${infoStartRow + 4}`).alignment = { horizontal: 'center' };
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sheet.mergeCells(`B${infoStartRow + 4}:C${infoStartRow + 4}`);
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sheet.getRow(infoStartRow + 4).height = 26;
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// Instructions
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sheet.mergeCells(`B${infoStartRow + 7}:C${infoStartRow + 7}`);
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const instrCell = sheet.getCell(`B${infoStartRow + 7}`);
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instrCell.value = 'Scannen Sie den QR-Code mit Ihrem Smartphone';
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instrCell.font = { size: 11, color: { argb: 'FF666666' } };
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instrCell.alignment = { horizontal: 'center', wrapText: true };
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sheet.mergeCells(`B${infoStartRow + 8}:C${infoStartRow + 8}`);
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const instrCell2 = sheet.getCell(`B${infoStartRow + 8}`);
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instrCell2.value = 'um Ihren aktuellen Zählerstand zu melden.';
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instrCell2.font = { size: 11, color: { argb: 'FF666666' } };
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instrCell2.alignment = { horizontal: 'center', wrapText: true };
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// Border box around content
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for (let row = 1; row <= infoStartRow + 9; row++) {
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const r = sheet.getRow(row);
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r.getCell(2).border = { left: { style: 'thin', color: { argb: 'FFE0E0E0' } } };
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r.getCell(3).border = { right: { style: 'thin', color: { argb: 'FFE0E0E0' } } };
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}
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}
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// Generate buffer
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const buffer = await workbook.xlsx.writeBuffer();
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const filename = `wasserzaehler_qrcodes_${new Date().toISOString().split('T')[0]}.xlsx`;
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return new NextResponse(buffer, {
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status: 200,
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headers: {
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'Content-Type': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
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'Content-Disposition': `attachment; filename="${filename}"`,
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},
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});
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} catch (err) {
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console.error('QR-Code Excel Error:', err);
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return NextResponse.json(
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{ error: 'Interner Serverfehler.' },
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{ status: 500 }
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);
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}
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}
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