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Update onAdd and toggleCartItemQuantity #29

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Update onAdd and toggleCartItemQuantity #29

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88 changes: 51 additions & 37 deletions context/StateContext.js
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Original file line number Diff line number Diff line change
Expand Up @@ -13,30 +13,36 @@ export const StateContext = ({ children }) => {
let foundProduct;
let index;

const onAdd = (product, quantity) => {
const checkProductInCart = cartItems.find((item) => item._id === product._id);

setTotalPrice((prevTotalPrice) => prevTotalPrice + product.price * quantity);
setTotalQuantities((prevTotalQuantities) => prevTotalQuantities + quantity);

if(checkProductInCart) {
const updatedCartItems = cartItems.map((cartProduct) => {
if(cartProduct._id === product._id) return {
...cartProduct,
quantity: cartProduct.quantity + quantity
const onAdd = (product, quantity) =>
{
// see if product is already in the cart
const productInCart = cartItems.find((item) => item._id === product._id);
// this needs to happen regardless if item is already in cart
setTotalPrice(prevTotalPrice => prevTotalPrice + product.price * quantity);
setTotalQuantities(prevTotalQuantities => prevTotalQuantities + quantity);
// if product is already in cart -> add new quantity to previous quantity
if (productInCart)
{
const updatedCartItems = cartItems.map((item) =>
{
// find the matching product and adjust the number in the cart
if (item._id === product._id)
{
return { ...item, quantity: item.quantity + quantity };
}
});
setCartItems(updatedCartItems);
}
})

setCartItems(updatedCartItems);
} else {
product.quantity = quantity;

setCartItems([...cartItems, { ...product }]);
else
{
product.quantity = quantity;
setCartItems([...cartItems, { ...product }]);
}
toast.success(`${qty} ${product.name} added to the cart.`);
// so each product defaults to 1 when navigating to a new product
setQty(1);
}

toast.success(`${qty} ${product.name} added to the cart.`);
}

const onRemove = (product) => {
foundProduct = cartItems.find((item) => item._id === product._id);
const newCartItems = cartItems.filter((item) => item._id !== product._id);
Expand All @@ -46,23 +52,31 @@ export const StateContext = ({ children }) => {
setCartItems(newCartItems);
}

const toggleCartItemQuanitity = (id, value) => {
foundProduct = cartItems.find((item) => item._id === id)
index = cartItems.findIndex((product) => product._id === id);
const newCartItems = cartItems.filter((item) => item._id !== id)
const toggleCartItemQuantity = (id, value) =>
{
foundProduct = cartItems.find((item) => item._id === id);
index = cartItems.findIndex((product) => product._id === id);

if(value === 'inc') {
setCartItems([...newCartItems, { ...foundProduct, quantity: foundProduct.quantity + 1 } ]);
setTotalPrice((prevTotalPrice) => prevTotalPrice + foundProduct.price)
setTotalQuantities(prevTotalQuantities => prevTotalQuantities + 1)
} else if(value === 'dec') {
if (foundProduct.quantity > 1) {
setCartItems([...newCartItems, { ...foundProduct, quantity: foundProduct.quantity - 1 } ]);
setTotalPrice((prevTotalPrice) => prevTotalPrice - foundProduct.price)
setTotalQuantities(prevTotalQuantities => prevTotalQuantities - 1)
if (value === 'inc')
{
foundProduct.quantity += 1;
setTotalPrice(prevTotalPrice => prevTotalPrice + foundProduct.price);
setTotalQuantities(prevTotalQuantities => prevTotalQuantities + 1);
} else if (value === 'dec')
{
if (foundProduct.quantity > 1)
{
foundProduct.quantity -= 1;
setTotalPrice(prevTotalPrice => prevTotalPrice - foundProduct.price);
setTotalQuantities(prevTotalQuantities => prevTotalQuantities - 1);
}
}
}
}
let newCartItems = cartItems.map((item, i) =>
{
return i === index ? foundProduct : item;
});
setCartItems(newCartItems);
};

const incQty = () => {
setQty((prevQty) => prevQty + 1);
Expand Down Expand Up @@ -100,4 +114,4 @@ export const StateContext = ({ children }) => {
)
}

export const useStateContext = () => useContext(Context);
export const useStateContext = () => useContext(Context);