/* LocalStorage State-Management + Mehrfach-Projekte */
/* global window */

const STORAGE_KEY = 'kalk3d_projects_v1';
const CURRENT_KEY = 'kalk3d_current_v1';

const FIELDS = [
  'projectName', 'customer', 'materialType',
  'materialCostPerKg', 'materialUsageG',
  'printTimeH', 'machineRate', 'powerKwh', 'powerPrice',
  'postMin', 'postRate',
  'packagingCost', 'shippingCost', 'setupCost',
  'scrapPct', 'marginPct', 'quantity', 'individualAdjustment',
  'vatPct', 'notes',
];

const makeDefault = (name = 'Neues Projekt') => ({
  id: 'p_' + Date.now() + '_' + Math.random().toString(36).slice(2, 7),
  projectName: name,
  customer: '',
  materialType: 'PLA',
  materialCostPerKg: 25,
  materialUsageG: 0,
  printTimeH: 0,
  machineRate: 3,
  powerKwh: 0.15,
  powerPrice: 0.35,
  postMin: 0,
  postRate: 30,
  packagingCost: 0,
  shippingCost: 0,
  setupCost: 0,
  scrapPct: 5,
  marginPct: 30,
  quantity: 1,
  individualAdjustment: 0,
  vatPct: 19,
  notes: '',
  createdAt: new Date().toISOString(),
  updatedAt: new Date().toISOString(),
});

const load = () => {
  try {
    const raw = localStorage.getItem(STORAGE_KEY);
    if (!raw) return [];
    const parsed = JSON.parse(raw);
    return Array.isArray(parsed) ? parsed : [];
  } catch (e) {
    console.warn('State-Load-Fehler:', e);
    return [];
  }
};

const save = (projects) => {
  localStorage.setItem(STORAGE_KEY, JSON.stringify(projects));
};

const getCurrentId = () => localStorage.getItem(CURRENT_KEY);
const setCurrentId = (id) => localStorage.setItem(CURRENT_KEY, id);

window.Store = {
  FIELDS, makeDefault, load, save, getCurrentId, setCurrentId, STORAGE_KEY, CURRENT_KEY,
};