Get summaries of new YouTube videos

import xml.etree.ElementTree as ET
from clickruntime import on_trigger, credentials, notify, http, state, report_fetched

def gemini(body, model="gemini-2.5-flash"):
    resp = http.post(f"https://generativelanguage.googleapis.com/v1beta/models/{model}:generateContent",
                     headers={"x-goog-api-key": credentials.secret("GEMINI_API_KEY")}, json=body, timeout=120)
    resp.raise_for_status()
    return resp.json()["candidates"][0]

CHANNELS = ["UC_x5XG1OV2P6uZZ5FSM9Ttw", "UCVHFbqXqoYvEWM1Ddxl0QDg", "UCsBjURrPoezykLs9EqgamOA"]
NS = {"a": "http://www.w3.org/2005/Atom", "yt": "http://www.youtube.com/xml/schemas/2015"}

@on_trigger
def run(event):
    seen = set(state.get("seen") or [])
    new = []
    for cid in CHANNELS:
        feed = ET.fromstring(http.get("https://www.youtube.com/feeds/videos.xml", params={"channel_id": cid}).content)
        for e in feed.findall("a:entry", NS):
            if e.findtext("yt:videoId", namespaces=NS) not in seen:
                new.append((e.findtext("yt:videoId", namespaces=NS), e.findtext("a:title", namespaces=NS)))
    report_fetched(len(new))
    if not new:
        return {"new": 0}
    for vid, title in new:
        url = f"https://www.youtube.com/watch?v={vid}"
        out = gemini({"contents": [{"parts": [{"file_data": {"file_uri": url}},
                                               {"text": "Summarise this video in 5 bullets."}]}]})
        notify.email_me(f"New video: {title}", out["content"]["parts"][0]["text"] + f"\n\n{url}")
        seen.add(vid)
    state.set("seen", sorted(seen))
    return {"new": len(new)}