Get weekly Calendly booking numbers

from collections import Counter
from datetime import datetime, timedelta, timezone
from clickruntime import on_trigger, credentials, http, state, notify

API = "https://api.calendly.com"

@on_trigger
def run(event):
    h = {"Authorization": f"Bearer {credentials.secret('CALENDLY_TOKEN')}"}
    me = http.get(f"{API}/users/me", headers=h).json()["resource"]["uri"]
    end = datetime.now(timezone.utc).replace(hour=0, minute=0, second=0, microsecond=0)
    params = {"user": me, "count": 100, "min_start_time": (end - timedelta(days=7)).isoformat(), "max_start_time": end.isoformat()}
    booked, canceled, no_shows = Counter(), Counter(), Counter()
    for status, counter in (("active", booked), ("canceled", canceled)):
        for ev in http.get(f"{API}/scheduled_events", headers=h, params={**params, "status": status}).json()["collection"]:
            counter[ev["name"]] += 1
            if status == "active":
                uuid = ev["uri"].rsplit("/", 1)[-1]
                invs = http.get(f"{API}/scheduled_events/{uuid}/invitees", headers=h).json()["collection"]
                no_shows[ev["name"]] += sum(1 for i in invs if i.get("no_show"))
    last = state.get("last_week") or {}
    lines = [f"{n}: {booked[n]} booked (last week {last.get(n, 0)}), {canceled[n]} canceled, "
             f"{no_shows[n] / booked[n]:.0%} no-show" if booked[n] else f"{n}: 0 booked, {canceled[n]} canceled"
             for n in sorted(set(booked) | set(canceled))]
    state.set("last_week", dict(booked))
    notify.email_me("Calendly bookings last week", "\n".join(lines) or "No bookings.")
    return {"booked": sum(booked.values())}