feat: MVP 3D-Druck Kostenkalkulator

- Single-Page HTML-App mit allen 18 Eingabefeldern - 12 Berechnungen live (calc.js, reine Funktionen) - LocalStorage-Persistenz, Mehrfach-Projekte via Sidebar - Excel Im-/Export ueber SheetJS (vendored, MIT) - Drag&Drop + File-Picker-Import - Apple-Swiss-Styling, responsive - Vorlagen-Excel mit 3 Reitern (Eingabe/Kalkulation/Angebot), Formeln referenzieren Eingabe - openpyxl-Script fuer reproduzierbaren Template-Build - 5 Test-Szenarien validiert Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-23 21:15:25 +02:00
commit 7507f768a3
12 changed files with 1308 additions and 0 deletions
--- a/assets/excel.js
+++ b/assets/excel.js
@@ -0,0 +1,109 @@
+/* Excel Import/Export via SheetJS */
+/* global window, XLSX */
+
+const FIELD_LABELS = {
+  projectName: 'Projektname',
+  customer: 'Kunde / Auftrag',
+  materialType: 'Materialtyp',
+  materialCostPerKg: 'Materialkosten pro kg (EUR)',
+  materialUsageG: 'Materialverbrauch (g)',
+  printTimeH: 'Druckzeit (h)',
+  machineRate: 'Maschinenstundensatz (EUR/h)',
+  powerKwh: 'Stromverbrauch (kWh)',
+  powerPrice: 'Strompreis (EUR/kWh)',
+  postMin: 'Nachbearbeitungszeit (min)',
+  postRate: 'Nachbearbeitungs-Stundensatz (EUR/h)',
+  packagingCost: 'Verpackungskosten (EUR)',
+  shippingCost: 'Versandkosten (EUR)',
+  setupCost: 'Ruestkosten (EUR)',
+  scrapPct: 'Ausschussrisiko (%)',
+  marginPct: 'Gewinnaufschlag (%)',
+  quantity: 'Stueckzahl',
+  individualAdjustment: 'Individueller Zuschlag/Rabatt (EUR)',
+  vatPct: 'MwSt (%)',
+  notes: 'Notizen',
+};
+
+const LABEL_TO_FIELD = Object.fromEntries(
+  Object.entries(FIELD_LABELS).map(([k, v]) => [v, k])
+);
+
+const exportXlsx = (project, results) => {
+  const wb = XLSX.utils.book_new();
+
+  /* Reiter Eingabe */
+  const inputRows = [['Feld', 'Wert']];
+  window.Store.FIELDS.forEach((f) => {
+    inputRows.push([FIELD_LABELS[f] || f, project[f] ?? '']);
+  });
+  const wsInput = XLSX.utils.aoa_to_sheet(inputRows);
+  wsInput['!cols'] = [{ wch: 40 }, { wch: 24 }];
+  XLSX.utils.book_append_sheet(wb, wsInput, 'Eingabe');
+
+  /* Reiter Kalkulation */
+  const calcRows = [
+    ['Position', 'Betrag (EUR)'],
+    ['1. Materialkosten', results.materialCost],
+    ['2. Maschinenkosten', results.machineCost],
+    ['3. Energiekosten', results.energyCost],
+    ['4. Nachbearbeitungskosten', results.postCost],
+    ['5. Gesamtherstellungskosten', results.totalProduction],
+    ['6. Ausschuss-Zuschlag', results.scrapSurcharge],
+    ['7. Zwischensumme netto', results.subtotalNet],
+    ['8. Marge', results.margin],
+    ['9. Kundenpreis netto', results.customerNet],
+    ['10. Stueckpreis netto', results.unitNet],
+    ['11. Stueckpreis brutto', results.unitGross],
+    ['12. Gesamtpreis brutto', results.totalGross],
+  ];
+  const wsCalc = XLSX.utils.aoa_to_sheet(calcRows);
+  wsCalc['!cols'] = [{ wch: 36 }, { wch: 18 }];
+  XLSX.utils.book_append_sheet(wb, wsCalc, 'Kalkulation');
+
+  /* Reiter Angebot */
+  const offerRows = [
+    ['Angebot'],
+    [],
+    ['Projekt', project.projectName || ''],
+    ['Kunde', project.customer || ''],
+    ['Datum', new Date().toLocaleDateString('de-DE')],
+    [],
+    ['Position', 'Menge', 'Stueckpreis brutto', 'Gesamt'],
+    [project.projectName || 'Leistung', project.quantity || 1, results.unitGross, results.totalGross],
+    [],
+    ['Gesamt brutto', '', '', results.totalGross],
+  ];
+  const wsOffer = XLSX.utils.aoa_to_sheet(offerRows);
+  wsOffer['!cols'] = [{ wch: 30 }, { wch: 12 }, { wch: 20 }, { wch: 14 }];
+  XLSX.utils.book_append_sheet(wb, wsOffer, 'Angebot');
+
+  const filename = `Kalkulation_${(project.projectName || 'Projekt').replace(/[^\w\-]+/g, '_')}.xlsx`;
+  XLSX.writeFile(wb, filename);
+};
+
+const importXlsx = (file) => new Promise((resolve, reject) => {
+  const reader = new FileReader();
+  reader.onerror = () => reject(new Error('Datei konnte nicht gelesen werden.'));
+  reader.onload = (ev) => {
+    try {
+      const data = new Uint8Array(ev.target.result);
+      const wb = XLSX.read(data, { type: 'array' });
+      const sheetName = wb.SheetNames.includes('Eingabe') ? 'Eingabe' : wb.SheetNames[0];
+      const ws = wb.Sheets[sheetName];
+      const rows = XLSX.utils.sheet_to_json(ws, { header: 1 });
+      const updates = {};
+      rows.forEach((r) => {
+        if (!r || r.length < 2) return;
+        const label = String(r[0]).trim();
+        const field = LABEL_TO_FIELD[label];
+        if (field) updates[field] = r[1];
+      });
+      resolve(updates);
+    } catch (e) {
+      reject(e);
+    }
+  };
+  reader.readAsArrayBuffer(file);
+});
+
+window.Excel = { exportXlsx, importXlsx, FIELD_LABELS };