Integrate create-checkout-session API

We’ll call the cart API. After getting all the items in the cart, we’ll call the /create-checkout-session API and store the sessionId in the local storage. We’ll redirect the user to the Stripe-hosted payment page. This page will redirect us to the success or fail page.

Get all the cart items

We’ll define the getAllCartItems function, which will convert cartItems to checkoutBodyArray. We’ll use it to call /create-checkout-session. This function will be called in the mounted method.