Get an email when channels you follow post

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

YT = "https://www.googleapis.com/youtube/v3"

@on_trigger
def run(event):
    h = {"Authorization": f"Bearer {credentials.connection('google', 'work')}"}
    subs = http.get(f"{YT}/subscriptions", headers=h, params={"part": "snippet", "mine": "true", "maxResults": 50}).json()["items"]
    ids = ",".join(s["snippet"]["resourceId"]["channelId"] for s in subs)
    channels = http.get(f"{YT}/channels", headers=h, params={"part": "contentDetails", "id": ids, "maxResults": 50}).json()["items"]
    seen = set(state.get("seen") or [])
    new = []
    for ch in channels:
        pl = ch["contentDetails"]["relatedPlaylists"]["uploads"]
        for it in http.get(f"{YT}/playlistItems", headers=h, params={"part": "snippet", "playlistId": pl, "maxResults": 5}).json().get("items", []):
            vid = it["snippet"]["resourceId"]["videoId"]
            if vid not in seen:
                new.append(f"{it['snippet']['channelTitle']}: {it['snippet']['title']}\nhttps://youtu.be/{vid}")
                seen.add(vid)
    report_fetched(len(new))
    if not new:
        return {"summary": "Nothing new"}
    state.set("seen", list(seen)[-2000:])
    notify.email_me(f"{len(new)} new videos", "\n\n".join(new))
    return {"new": len(new)}