Text appointment reminders and see confirmations in Slack

from twilio.rest import Client
from clickruntime import on_trigger, on_event, credentials, http, notify, state, ai

FEED = "https://bookings.example.com/api/tomorrow"
FROM = "+15005550006"

def sms(to, body):
    return Client(credentials.secret("TWILIO_ACCOUNT_SID"), credentials.secret("TWILIO_AUTH_TOKEN")).messages.create(to=to, from_=FROM, body=body)

@on_trigger
def run(event):
    appts = http.get(FEED, headers={"Authorization": f"Bearer {credentials.secret('BOOKINGS_TOKEN')}"}).json()
    for a in appts:
        sms(a["phone"], f"Hi {a['name']}, reminder of your appointment tomorrow at {a['time']}. Reply YES to confirm or NO to cancel.")
        state.set(f"appt:{a['phone']}", {"name": a["name"], "time": a["time"]})
    return {"reminded": len(appts)}

@on_event
def handle(event):
    f = event.json or {}
    appt = state.get(f"appt:{f.get('From')}") or {"name": f.get("From"), "time": "?"}
    body = (f.get("Body") or "").strip()
    intent = {"YES": "confirmed", "NO": "cancelled"}.get(body.upper())
    if not intent:
        try:
            intent = ai.generate(body[:300], system="One word: confirmed, cancelled or reschedule.", max_output_tokens=5).text.strip().lower()
        except ai.AIError:
            intent = "replied"
    notify.slack(f":calendar: {appt['name']} ({appt['time']}) {intent}: \"{body[:200]}\"", channel="#front-desk")
    return {"intent": intent}