https://kwickey.com/js/components/cart-store.js?v=d5530e79454b

1/**
2 * Cart store — shared state for the cart drawer and the nav badge.
3 *
4 * Holds one quantity per product (sticker, anhaenger), persisted in
5 * localStorage. Storing plain quantities is GDPR-safe: no personal data,
6 * strictly necessary for the shop function, so no consent gate needed.
7 *
8 * Every change dispatches `cart:change` on `document` so independent
9 * surfaces (drawer, nav badge) stay in sync without importing each other.
10 */
11
12import { MAX_QTY, ANHAENGER_MAX_QTY } from './pricing.js?v=d5530e79454b';
13
14const STORAGE_KEY = 'kwickey_cart_v1';
15const PRODUCTS = ['sticker', 'anhaenger'];
16
17const state = { sticker: 0, anhaenger: 0 };
18
19function clampQty(product, value) {
20  const max = product === 'anhaenger' ? ANHAENGER_MAX_QTY : MAX_QTY;
21  const n = Number(value);
22  if (!Number.isInteger(n) || n < 0) return 0;
23  return Math.min(n, max);
24}
25
26function load() {
27  try {
28    const raw = localStorage.getItem(STORAGE_KEY);
29    if (!raw) return;
30    const parsed = JSON.parse(raw);
31    PRODUCTS.forEach((p) => { state[p] = clampQty(p, parsed?.[p]); });
32  } catch (_) { /* corrupt or unavailable storage — start empty */ }
33}
34
35function persist() {
36  try {
37    localStorage.setItem(STORAGE_KEY, JSON.stringify(state));
38  } catch (_) { /* private mode — cart lives for the session only */ }
39}
40
41function emitChange() {
42  document.dispatchEvent(new CustomEvent('cart:change', {
43    detail: { ...state, count: getCartCount() }
44  }));
45}
46
47load();
48
49/** @param {'sticker'|'anhaenger'} product */
50export function getQty(product) {
51  return state[product] || 0;
52}
53
54/** @param {'sticker'|'anhaenger'} product @param {number} qty */
55export function setQty(product, qty) {
56  if (!PRODUCTS.includes(product)) return;
57  const next = clampQty(product, qty);
58  if (next === state[product]) return;
59  state[product] = next;
60  persist();
61  emitChange();
62}
63
64/** @param {'sticker'|'anhaenger'} product */
65export function addOne(product) {
66  setQty(product, getQty(product) + 1);
67}
68
69export function getCartCount() {
70  return PRODUCTS.reduce((sum, p) => sum + state[p], 0);
71}
72
73export function clearCart() {
74  PRODUCTS.forEach((p) => { state[p] = 0; });
75  persist();
76  emitChange();
77}