1 files changed, 109 insertions, 0 deletions
diff --git a/src/wwwroot/scripts/cart-core.js b/src/wwwroot/scripts/cart-core.js
new file mode 100644
index 0000000..c15d0af
--- /dev/null
+++ b/src/wwwroot/scripts/cart-core.js
@@ -0,0 +1,109 @@
+import {utilites} from "./utilities";
+import {configuration} from "./configuration";
+import {getProducts} from "./api/products-api";
+
+export function setCart(data) {
+	return utilites.setSessionStorageJSON(configuration.storageKeys.cart, data);
+}
+
+export function getCart() {
+	return utilites.getSessionStorageJSON(configuration.storageKeys.cart);
+}
+
+export function cartDispose() {
+	sessionStorage.removeItem(configuration.storageKeys.cart);
+}
+
+export function priceTotal() {
+	const cartData = getCart();
+	if (utilites.array.isEmpty(cartData)) {
+		return null;
+	}
+	let total = null;
+	for (const product of cartData) {
+		total += product.price * product.count;
+	}
+	return typeof total !== "number" ? total : total.toFixed(2) + ",-";
+}
+
+export function priceTax() {
+	const cartData = getCart();
+	if (utilites.array.isEmpty(cartData)) {
+		return null;
+	}
+	let total = null;
+	for (const product of cartData) {
+		total += product.price * product.count;
+	}
+	return typeof total !== "number" ? total : ((total) * 25 / 100).toFixed(2) + ",-";
+}
+
+export function updatePricesFromApi() {
+	return new Promise((ok, error) => {
+		const cartData = getCart();
+		if (!cartData) {
+
+			ok();
+			return;
+		}
+		getProducts().then(res => {
+			if (res.ok) {
+				res.json().then(apiProducts => {
+					apiProducts = utilites.resolveReferences(apiProducts);
+					for (const latestProduct of apiProducts) {
+						const index = cartData.findIndex(c => c.id === latestProduct.id);
+						if (index !== -1) {
+							cartData[index].price = latestProduct.price;
+						}
+						if (index !== -1) {
+							cartData[index].readablePrice = latestProduct.price + latestProduct.readablePriceSuffix;
+						}
+					}
+					setCart(cartData);
+					ok();
+				});
+			}
+		});
+	});
+}
+
+export function setProductCount(id, newCount) {
+	const cartData = getCart();
+	const productIndex = cartData.findIndex(c => c.id === id);
+	cartData[productIndex].count = newCount;
+	setCart(cartData);
+}
+
+export function removeProductFromCart(id, callback) {
+	const cartData = getCart();
+	if (utilites.array.isEmpty(cartData)) {
+		return;
+	}
+	const updatedCart = utilites.array.removeItemByIdAll(cartData, {id});
+	if (updatedCart.length === 0) {
+		cartDispose();
+	} else {
+		setCart(updatedCart);
+	}
+	if (typeof callback === "function") {
+		callback(updatedCart);
+	}
+}
+
+export function addOrUpdateProduct(product, callback) {
+	let cartData = getCart();
+	if (utilites.array.isEmpty(cartData)) {
+		cartData = [];
+	}
+	const indexOfCurrent = cartData.length === 0 ? -1 : cartData.findIndex(c => c.id === product.id);
+	if (indexOfCurrent === -1 && product !== undefined) { // adding
+		product.count = 1;
+		cartData.push(product);
+	} else if (indexOfCurrent !== -1) { // updating
+		cartData[indexOfCurrent] = product;
+	}
+	setCart(cartData);
+	if (typeof callback === "function") {
+		callback();
+	}
+}