Turn support emails into Trello cards

import base64
from email.mime.text import MIMEText
from google.oauth2.credentials import Credentials
from googleapiclient.discovery import build
from clickruntime import on_trigger, credentials, http, ai, report_fetched

LISTS = {"bug": "list-id-bugs", "billing": "list-id-billing", "other": "list-id-inbox"}
LABEL_ID = "your-gmail-label-id"

@on_trigger
def run(event):
    gmail = build("gmail", "v1", credentials=Credentials(credentials.connection("google", "work")), cache_discovery=False)
    msgs = gmail.users().messages().list(userId="me", q="to:support@ is:unread -label:on-trello").execute().get("messages", [])
    report_fetched(len(msgs))
    if not msgs:
        return {"summary": "Nothing new"}
    auth = {"key": credentials.secret("TRELLO_KEY"), "token": credentials.secret("TRELLO_TOKEN")}
    for m in msgs:
        msg = gmail.users().messages().get(userId="me", id=m["id"], format="metadata").execute()
        h = {x["name"]: x["value"] for x in msg["payload"]["headers"]}
        try:
            kind = ai.generate(f"Label as bug, billing or other:\n{h.get('Subject')}\n{msg['snippet']}", max_output_tokens=10).text.strip().lower()
        except ai.AIError:
            kind = "billing" if "invoice" in msg["snippet"].lower() else "other"
        http.post("https://api.trello.com/1/cards", params={**auth, "idList": LISTS.get(kind, LISTS["other"]),
                  "name": h.get("Subject", "(no subject)"), "desc": f"From {h.get('From')}\n\n{msg['snippet']}"})
        reply = MIMEText("Thanks, we received your message and will get back to you soon.")
        reply["To"], reply["Subject"] = h.get("From"), "Re: " + h.get("Subject", "")
        raw = base64.urlsafe_b64encode(reply.as_bytes()).decode()
        gmail.users().messages().send(userId="me", body={"raw": raw, "threadId": msg["threadId"]}).execute()
        gmail.users().messages().modify(userId="me", id=m["id"], body={"addLabelIds": [LABEL_ID]}).execute()
    return {"summary": f"{len(msgs)} cards created"}