Add to cart to localstorage

1 files changed, 54 insertions, 0 deletions

diff --git a/src/helpers/cart.js b/src/helpers/cart.js
new file mode 100644
index 00000000..07e47324
--- /dev/null
+++ b/src/helpers/cart.js
@@ -0,0 +1,54 @@
+const getCart = () => {
+  const cart = localStorage.getItem('cart');
+  if (cart) return JSON.parse(cart);
+  return [];
+}
+
+const setCart = (cart) => {
+  localStorage.setItem('cart', JSON.stringify(cart));
+  return true;
+}
+
+const getItemIndex = (product_id) => {
+  const cart = getCart();
+  return cart.findIndex((item) => item.product_id == product_id);
+}
+
+const addToCart = (product_id, quantity) => {
+  let cart = getCart();
+  let itemIndexByProductId = getItemIndex(product_id);
+  if (itemIndexByProductId > -1) {
+    updateItemCart(product_id, quantity);
+  } else {
+    cart.push({ product_id, quantity });
+  }
+  setCart(cart);
+  return true;
+}
+
+const deleteItemCart = (product_id) => {
+  let cart = getCart();
+  let itemIndexByProductId = getItemIndex(product_id);
+  if (itemIndexByProductId > -1) {
+    cart.splice(itemIndexByProductId, 1)
+  }
+  setCart(cart);
+  return true;
+}
+
+const updateItemCart = (product_id, quantity) => {
+  let cart = getCart();
+  let itemIndexByProductId = getItemIndex(product_id);
+  if (itemIndexByProductId > -1) {
+    cart[itemIndexByProductId].quantity += quantity;
+  }
+  setCart(cart);
+  return true;
+}
+
+export {
+  getCart,
+  addToCart,
+  deleteItemCart,
+  updateItemCart
+}
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