function getCartItems() {
    const cartItems = localStorage.getItem('cart');
    return cartItems ? JSON.parse(cartItems) : [];
}

function updateCartIcon() {
    const cartItems = getCartItems();
    const cartItemCount = cartItems.reduce((total, item) => total + item.quantity, 0);
    const cartIcon = document.querySelector('a[href="/cart.html"]');
    if (cartIcon) {
        cartIcon.textContent = `Cart (${cartItemCount})`;
    }
}

function addToCart(product) {
    const cartItems = getCartItems();
    const existingProductIndex = cartItems.findIndex(item => item.id === product.id);

    if (existingProductIndex > -1) {
        // If the product already exists in the cart, increment the quantity
        cartItems[existingProductIndex].quantity += 1;
    } else {
        // Otherwise, add the product to the cart with a quantity of 1
        cartItems.push({ ...product, quantity: 1 });
    }

    localStorage.setItem('cart', JSON.stringify(cartItems));
    updateCartIcon();
    alert('Product added to cart!');
}

function removeFromCart(productId) {
    let cartItems = getCartItems();
    cartItems = cartItems.filter(item => item.id !== productId);
    localStorage.setItem('cart', JSON.stringify(cartItems));
    updateCartIcon();
    updateCartPage(); // Function to update cart page after removing item
}

// Call updateCartIcon on page load
updateCartIcon();