Creazione tabella Product

src/server/modules/Cart.js

@@ -0,0 +1,67 @@
+const cartModel = require('../models/cart')
+
+class Cart {
+  constructor(oldCart) {
+    this.items = oldCart.items || {};
+    this.totalQty = oldCart.totalQty || 0;
+    this.totalPrice = oldCart.totalPrice || 0;
+    this.userId = oldCart.userId || "";
+  }
+
+  add(item, id) {
+    let storedItem = this.items[id];
+    if (!storedItem) {
+      storedItem = this.items[id] = { item: item, qty: 0, price: 0 };
+    }
+    storedItem.qty++;
+    storedItem.price = parseFloat((storedItem.item.price * storedItem.qty).toFixed(2));
+    this.items[id]=storedItem
+    this.totalQty++;
+    this.totalPrice += storedItem.item.price;
+    this.totalPrice = parseFloat(this.totalPrice.toFixed(2))
+    return this
+  }
+
+  generateModel(){
+    let newCart = new cartModel({
+      items: this.items,
+      totalQty: this.totalQty,
+      totalPrice: this.totalPrice,
+      userId: this.userId
+    })
+    return newCart
+  }
+
+  decreaseQty(id) {
+    this.items[id].qty--;
+    this.items[id].price -= this.items[id].item.price;
+    this.items[id].price = parseFloat(this.items[id].price.toFixed(2))
+    this.totalQty--;
+    this.totalPrice -= this.items[id].item.price
+    this.totalPrice = parseFloat(this.totalPrice.toFixed(2))
+    if (this.items[id].qty <= 0) {
+      delete this.items[id];
+    }
+    return this
+  }
+
+  increaseQty(id) {
+    this.items[id].qty++;
+    this.items[id].price += this.items[id].item.price;
+    this.items[id].price = parseFloat(this.items[id].price.toFixed(2))
+    this.totalQty++;
+    this.totalPrice += this.items[id].item.price
+    this.totalPrice = parseFloat(this.totalPrice.toFixed(2))
+    return this
+  }
+
+  generateArray() {
+    let arr = [];
+    for (let id in this.items) {
+      arr.push(this.items[id])
+    }
+    return arr;
+  }
+}
+
+module.exports = Cart