Get Slack alerts for new Wix bookings

from datetime import datetime, timezone
from clickruntime import on_trigger, credentials, http, state, notify, report_fetched

SITE_ID = "your-site-id"

@on_trigger
def run(event):
    since = state.get("since") or datetime.now(timezone.utc).isoformat()
    resp = http.post("https://www.wixapis.com/bookings/bookings-reader/v2/extended-bookings/query",
                     headers={"Authorization": credentials.secret("WIX_API_KEY"), "wix-site-id": SITE_ID},
                     json={"query": {"filter": {"createdDate": {"$gt": since}},
                                     "sort": [{"fieldName": "createdDate", "order": "ASC"}]}})
    resp.raise_for_status()
    seen = set(state.get("seen") or [])
    bookings = [b["booking"] for b in resp.json().get("extendedBookings", []) if b["booking"]["id"] not in seen]
    report_fetched(len(bookings))
    if not bookings:
        return {"new": 0}
    for b in bookings:
        c = b.get("contactDetails") or {}
        start = datetime.fromisoformat(b["startDate"].replace("Z", "+00:00"))
        notify.slack(f"New booking: *{b['bookedEntity']['title']}* on {start:%a %d %b, %H:%M} UTC "
                     f"with {c.get('firstName', '')} {c.get('lastName', '')}", channel="#bookings")
    state.set("seen", (list(seen) + [b["id"] for b in bookings])[-500:])
    state.set("since", bookings[-1]["createdDate"])
    return {"new": len(bookings)}