Start client onboarding with a Trello card and welcome email

import base64
from datetime import datetime, timedelta, timezone
from email.message import EmailMessage
from google.oauth2.credentials import Credentials
from googleapiclient.discovery import build
from clickruntime import on_event, credentials, http, state

LIST_ID = "your-onboarding-list-id"
TEMPLATE_CARD_ID = "your-template-card-id"

@on_event
def handle(event):
    if state.get(event.event_id):
        return {"skipped": "duplicate"}
    client = event.json or {}
    auth = {"key": credentials.secret("TRELLO_API_KEY"), "token": credentials.secret("TRELLO_TOKEN")}
    due = (datetime.now(timezone.utc) + timedelta(days=14)).isoformat()
    card = http.post("https://api.trello.com/1/cards", params={**auth, "idList": LIST_ID, "idCardSource": TEMPLATE_CARD_ID,
                     "keepFromSource": "checklists", "name": f"Onboarding: {client['name']}", "due": due}).json()
    msg = EmailMessage()
    msg["To"], msg["Subject"] = client["email"], "Welcome aboard"
    msg.set_content(f"Hi {client['name']},\n\nThanks for signing. Next step: book your kickoff call and we'll take it from there.")
    gmail = build("gmail", "v1", credentials=Credentials(credentials.connection("google", "work")), cache_discovery=False)
    gmail.users().messages().send(userId="me", body={"raw": base64.urlsafe_b64encode(msg.as_bytes()).decode()}).execute()
    state.set(event.event_id, card["id"])
    return {"card": card["id"]}