Current cart saved to Wix Collection

This script is to save users current cart with a button, I tried my best and I am brand new too this, and cannot figure it out. It takes the current cart gets the data from the cart and maps it to the Collection form (at least I think it does). Front end:

import { saveCartToDatabase, myDeleteCurrentCartFunction, myUpdateDataCollectionFunction } from 'backend/cartButton.web.js';
import { getCurrentCart } from 'wix-stores';

// Define the updated data collection schema
const updatedDataCollection = {
    _id: "Carts",
    fields: [
        {
            key: "priceOfCheckout",
            displayName: "Price of Checkout",
            description: "The total price of the checkout",
        },
        {
            key: "items",
            displayName: "Items",
            description: "Items in cart",
            required: true
        },
        {
            key: "addresses",
            displayName: "Addresses",
            description: "Shipping addresses",
            required: true
        },
        {
            key: "creditCards",
            displayName: "Discount",
            description: "Discount applied",
            required: true
        }
    ],
    revision: "1",
};

$w.onReady(function () {
    $w('#CheckoutButton').onClick(async () => {
        try {
            // Get the current cart details
            const cart = await getCurrentCart();

            // Prepare the cart data
            const cartData = {
                items: cart.lineItems.map(item => ({
                    name: item.name,
                    price: item.price,
                    quantity: item.quantity,
                    totalPrice: item.totalPrice,
                    productId: item.productId
                })),
                total: cart.totals,
                currency: cart.currency,
                id: cart._id,
                shipping: cart.shippingInfo,
                discount: cart.appliedCoupon,
            };

            // Map cartData to the fields in updatedDataCollection
            const mappedData = {
                priceOfCheckout: cartData.total?.total, // Assuming totalPrice is part of totals object
                items: JSON.stringify(cartData.items), // Stringify items array
                addresses: JSON.stringify(cartData.shipping), // Assuming shipping contains address info
                creditCards: JSON.stringify(cartData.discount) // Assuming discount is the coupon applied
            };

            // Call the backend function to save the mapped data
            const result = await saveCartToDatabase(mappedData);

            if (result) {
                // Clear the cart after saving the data
                await myDeleteCurrentCartFunction();

                $w('#statusMessage').text = "Cart data saved and cart cleared successfully!";
            } else {
                $w('#statusMessage').text = "Failed to save cart data.";
            }
        } catch (error) {
            console.error("Error retrieving or saving cart:", error);
            $w('#statusMessage').text = "Failed to save cart data.";
        }
    });
});

Backend:

import wixData from 'wix-data';
import { Permissions, webMethod } from 'wix-web-module';
import { currentCart } from 'wix-ecom-backend';
import { collections } from 'wix-data.v2';

/**
 * Updates a data collection's schema and permissions.
 * @param {Object} updatedDataCollection - The collection schema and permissions to update.
 * @returns {Object} The response from the update operation.
 */
export async function myUpdateDataCollectionFunction(updatedDataCollection) {
    try {
        const updateResponse = await collections.updateDataCollection(updatedDataCollection);
        return updateResponse;
    } catch (error) {
        console.error("Error updating data collection:", error);
        throw new Error("Failed to update data collection");
    }
}

/**
 * Deletes the current user's cart.
 * @returns {void}
 */
export const myDeleteCurrentCartFunction = webMethod(Permissions.Anyone, async () => {
    try {
        await currentCart.deleteCurrentCart();
        console.log("Cart successfully deleted");
    } catch (error) {
        console.error("Error deleting cart:", error);
        throw new Error("Failed to delete cart");
    }
});

/**
 * Saves the current cart data to a Wix collection.
 * @param {Object} cartData - The cart data to save.
 * @returns {Object|null} The result of the insert operation, or null if failed.
 */
export async function saveCartToDatabase(cartData) {
    const toInsert = {
        items: JSON.stringify(cartData.items), // Save items as a JSON string
        subtotal: cartData.subtotal,
        total: cartData.total,
        currency: cartData.currency,
        tax: cartData.tax,
        shipping: JSON.stringify(cartData.shipping), // Save shipping info as a JSON string
        discount: cartData.discount,
        createdAt: new Date()
    };

    try {
        const result = await wixData.insert('CartCollection', toInsert); // Replace "CartCollection" with your collection ID
        return result;
    } catch (error) {
        console.error("Error saving cart to database:", error);
        return null;
    }
}

Thank you 😀