Cart and checkout

Cart

addToCart reuses or creates a cart. An Openfront cart is created with createActiveCart, which returns an id and a proof. The browser saves both per store ID. The cart card lets the buyer change quantities (updateCartItem) or remove items (removeCartItem).

• Quantity must be greater than 0 (use removeCartItem to remove)
• Quantity cannot exceed <MAX_QUANTITY> items per line

Address and shipping

setShippingAddress creates a guest user if needed. If the email already has an account, an email conflict card offers login, a different email, or the store checkout. setShippingMethod picks a shipping option from the store.

Pay in the chat

1. validateCartForCheckout.
2. getAvailablePaymentMethods.
3. initiatePaymentSession for Stripe or PayPal.
4. The browser renders Stripe elements or PayPal buttons with the store's publishable key.
5. completeCart turns the cart into an order.

Checkout link

getCheckoutLink returns <baseUrl>/<country>/account/checkout-link?cartId=... on the store. Restaurant links are <baseUrl>/checkout?cart_id=....

Login

loginUser shows a login form card. The form calls authenticateUser. The session token is saved per store ID.