Save Outlook attachments to OneDrive and tell Teams

import base64
from clickruntime import on_trigger, credentials, http, state, report_fetched

GRAPH, TEAM_ID, CHANNEL_ID = "https://graph.microsoft.com/v1.0", "your-team-id", "your-channel-id"

@on_trigger
def run(event):
    h = {"Authorization": f"Bearer {credentials.connection('microsoft', 'work')}"}
    since = state.get("since") or "2026-01-01T00:00:00Z"
    msgs = http.get(f"{GRAPH}/me/messages", headers=h, params={"$filter": f"hasAttachments eq true and receivedDateTime gt {since}",
                    "$select": "id,subject,from,receivedDateTime", "$orderby": "receivedDateTime asc"}).json()["value"]
    report_fetched(len(msgs))
    if not msgs:
        return {"summary": "Nothing new"}
    saved = []
    for m in msgs:
        for a in http.get(f"{GRAPH}/me/messages/{m['id']}/attachments", headers=h).json()["value"]:
            if a.get("isInline") or "contentBytes" not in a:
                continue
            name = f"{m['receivedDateTime'][:10]} {a['name']}"
            http.put(f"{GRAPH}/me/drive/root:/Attachments/{name}:/content", headers=h, data=base64.b64decode(a["contentBytes"])).raise_for_status()
            saved.append(f"<li>{name} from {m['from']['emailAddress']['address']}</li>")
    if saved:
        http.post(f"{GRAPH}/teams/{TEAM_ID}/channels/{CHANNEL_ID}/messages", headers=h,
                  json={"body": {"contentType": "html", "content": "New attachments saved to OneDrive:<ul>" + "".join(saved) + "</ul>"}})
    state.set("since", msgs[-1]["receivedDateTime"])
    return {"emails": len(msgs), "files": len(saved)}