Client builds the booking
Service, route, format, package, extras and guest details become structured data instead of chat fragments.
Operational objective
Every paid booking should create one clean internal object and four confirmations.
The site sells the service, but the backend closes the operational gap. After payment, the system should notify the client and Collins without depending on manual copy-paste.
Flow
The booking lifecycle should stay legible from first click to dispatch.
Checkout session carries the metadata
The Stripe payload already includes guest info, route, package, extras and operator metadata for downstream dispatch.
Webhook verifies payment
Only verified `checkout.session.completed` events should trigger confirmations.
Channel fan-out happens once
Email to client, email to Collins, WhatsApp to client and WhatsApp to Collins all originate from the paid booking payload.
Channels
Each notification has a different job.
Client recap
Booking code, paid status, route, date, pickup time, add-ons, total paid and reply path.
Owner recap
Guest contacts, route, service type, add-ons, notes, pickup timing and operational reference.
Client follow-up
Fast reassurance in the channel that most guests actually answer after paying.
Owner dispatch
The short operational brief that makes the next move instant instead of manual.
Stack
The repo now contains the front-end and the webhook base for the real backend layer.
Checkout: Stripe Checkout session endpoint with brand-specific metadata support.
Verification: Stripe webhook signature verification inside Cloudflare Pages Functions.
Email: Resend-ready delivery path for client and owner messages.
WhatsApp: Twilio WhatsApp-ready delivery path for client and owner dispatch.
Idempotency: optional KV-backed notification ledger to avoid duplicate sends.
Implementation order
Connect payment, connect channels, then go live.
The remaining production steps are operational, not conceptual: real email identity, real WhatsApp sender, Stripe keys and webhook secret, then one end-to-end payment test with the owner contact values filled in.