Initial commit - restaurant dashboard

src/services/cartHelpers.js

@@ -0,0 +1,140 @@
+
+import authService from './authService';
+
+// === مفاتيح التخزين ===
+const CART_KEY = 'activeCartId';
+
+// === LocalStorage Helpers ===
+export const setActiveCartId = (id) => {
+  try { localStorage.setItem(CART_KEY, String(id)); } catch {}
+};
+export const getActiveCartId = () => {
+  try { return localStorage.getItem(CART_KEY); } catch { return null; }
+};
+export const clearActiveCartId = () => {
+  try { localStorage.removeItem(CART_KEY); } catch {}
+};
+
+// === تحويل عناصر الكارت لصيغة JSON:API ===
+export const buildCartPayload = (items, totalPrice) => ({
+  data: {
+    type: "cart",
+    attributes: {
+      totalPrice: typeof totalPrice === 'number' ? Number(totalPrice) : undefined,
+    },
+    relationships: {
+      cartItems: items.map(it => ({
+        attributes: { quantity: Number(it.quantity) },
+        relationships: {
+          product: { data: { id: it.productId } }
+        }
+      }))
+    }
+  }
+});
+
+// === استخراج الـ productId من أي شكل محتمل ===
+export const extractProductId = (product) => (
+  product?.relationships?.supplier_product?.id ||
+  product?.relationships?.product?.data?.id ||
+  product?.supplier_product_id ||
+  product?.product_id ||
+  product?.id
+);
+
+// === استخراج عناصر الكارت من استجابة الباك ===
+export const getItemsFromCart = (cartData) => {
+  const rel = cartData?.relationships || {};
+  const list = rel.cartItems || rel.cart_items || [];
+  return list.map(item => ({
+    id: item.id,
+    productId: item.relationships?.supplier_product?.id ||
+               item.relationships?.product?.data?.id,
+    quantity: Number(item?.attributes?.quantity || 0),
+  })).filter(x => x.productId);
+};
+
+// === إضافة/تحديث عنصر في قائمة الكارت ===
+export const upsertItem = (items, productId, quantity) => {
+  const idx = items.findIndex(x => String(x.productId) === String(productId));
+  if (idx >= 0) {
+    const merged = [...items];
+    merged[idx] = { ...merged[idx], quantity: Number(merged[idx].quantity) + Number(quantity) };
+    return merged;
+  }
+  return [...items, { productId, quantity: Number(quantity) }];
+};
+
+// === حساب إجمالي مؤقت إن توفر priceMap ===
+export const estimateTotal = (items, priceMap) => {
+  if (!priceMap) return undefined;
+  return items.reduce((sum, it) => sum + (Number(priceMap[it.productId]) || 0) * Number(it.quantity), 0);
+};
+
+// === التأكد من وجود كارت فعّالة وإنشاؤها إذا لم توجد ===
+export const ensureActiveCart = async () => {
+  const existing = getActiveCartId();
+  if (existing) return existing;
+
+  const token = localStorage.getItem('token');
+  if (!token) return null;
+
+  const payload = {
+    data: {
+      type: "cart",
+      attributes: { totalPrice: 0 },
+      relationships: { cartItems: [] }
+    }
+  };
+
+  const res = await authService.createCart(payload);
+  if (res?.success && res?.data?.id) {
+    setActiveCartId(res.data.id);
+    return res.data.id;
+  }
+  return null;
+};
+
+// === إضافة منتج للكارت الفعّالة ===
+export const addItemToActiveCart = async ({ product, quantity = 1, priceMap = null }) => {
+  const token = localStorage.getItem('token');
+  if (!token) return { success: false, message: 'No token found' };
+
+  const cartId = await ensureActiveCart();
+  if (!cartId) return { success: false, message: 'Failed to create or get cart' };
+
+  const current = await authService.getCartById(cartId);
+  if (!current?.success || !current?.data) return { success: false, message: 'Failed to fetch active cart' };
+
+  const existingItems = getItemsFromCart(current.data);
+  const productId = extractProductId(product);
+  if (!productId) return { success: false, message: 'Invalid product id' };
+
+  const mergedItems = upsertItem(existingItems, productId, quantity);
+  const totalPrice = estimateTotal(mergedItems, priceMap);
+  const updatePayload = buildCartPayload(mergedItems, totalPrice);
+
+  const updated = await authService.updateCart(cartId, updatePayload);
+  if (updated?.success && updated?.data?.id) {
+    setActiveCartId(updated.data.id);
+    return { success: true, data: updated.data, cartId: updated.data.id };
+  }
+
+  return { success: false, message: updated?.message || 'Failed to update cart', errors: updated?.errors || null };
+};
+
+// === تصدير الأدوات كموديل واحد ===
+const cartHelpers = {
+  setActiveCartId,
+  getActiveCartId,
+  clearActiveCartId,
+  ensureActiveCart,
+  addItemToActiveCart,
+  buildCartPayload,
+  extractProductId,
+  getItemsFromCart,
+  upsertItem,
+  estimateTotal,
+};
+
+export default cartHelpers;