🛍️ Shopping Cart Challenge

Welcome to the Shopping Cart Challenge! 🚀 Your task is to create a shopping cart system that interacts with a store inventory. This challenge will test your skills in JavaScript objects, arrays and functions.

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📌 Challenge Overview

You need to implement a shopping cart system that allows users to: ✅ Add products to the cart (if available in stock). ✅ Remove products from the cart completely. ✅ Update the quantity of a product in the cart. ✅ Get cart details (items + total price). ✅ Ensure stock updates when adding / removing items. ✅ (EXTRA) Use prompts to make it interactive! 🖥️

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📦 Store Inventory

Here`s an example of store products. You can change them if you want!

const store = [
  { id: "1", name: "🥕 Carrot", price: 2, stock: 10 },
  { id: "2", name: "🍅 Tomato", price: 3, stock: 8 },
  { id: "3", name: "🥦 Broccoli", price: 4, stock: 5 },
];

📌 You can modify products! Add more items or change their names, prices and stock.

When product is added to the cart, its stock decreases.

If the product is removed, the stock increases back.

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🛠️ Functions You Need to Implement

You must create the following functions:

const cart = []; // Empty shopping cart

function addProduct(id, quantity) {} // Adds product to the cart
function removeProduct(id) {} // Removes a product from the cart
function updateQuantity(id, quantity) {} // Updates product quantity in the cart
function getCartDetails() {} // Returns all cart items & total price
function startShopping() {} // (EXTRA) Interactive shopping experience

📌Rules:

• You cannot add more items than available in stock.
• If an item is removed from the cart, its stock is restored.
• The updateQuantity(id, quantity) function changes the quantity of an item in the cart.
• The removeProduct(id) function removes the item completely from the cart.
• The getCartDetails() function should return a summary of the cart, including the total price.

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🚀 Example Usage

Copy - paste this into your browser console or a JavaScript file to test your functions:

addProduct("1", 5); // ✅ Adds 5 Carrots 🥕
addProduct("2", 10); // ❌ Error: Only 8 Tomatoes 🍅 available!
updateQuantity("1", 2); // ✅ Updates Carrots to 2 in the cart
removeProduct("1"); // ✅ Completely removes Carrots, stock is restored

console.log(getCartDetails());

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🎮 EXTRA: Interactive Mode!

🔹Want to make your program interactive?

1. Use prompt() to ask the user what they want to do (add, remove, update, view, exit).
2. If the user chooses "add", as for the product ID and quantity.
3. If the user chooses "remove", ask for the product ID and completely remove it from the cart.
4. If the user chooses "update", ask for the product ID and new quantity.
5. If the user chooses "view", display the cart details in the console.
6. If the user chooses "exit", end the program.

📌 Run a loop to keep asking the user until they choose "exit"!

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📂 Folder Structure

Each student must create their own folder inside 54_group/ with their implementation:

54_group/
    student_name/
        cart.js     (Your solution)
        README.md   (Optional documentation)

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🎯 Goals

This challenge will help you practise:

• ✅ Working with arrays & objects.
• ✅ Implementing business logic (inventory magaement).
• ✅ Using functions effectively.
• ✅ Creating an interactive shopping experience (EXTRA).

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🎉 Ready? Start Coding!

1. Fork the repository.
2. Create your own folder inside 54_group/
3. Write your cart.js solution.
4. Push your solution and submit a pull request!

Good luck! 🚀🔥