See your five best TikToks each month

from datetime import datetime, timedelta, timezone
from clickruntime import on_trigger, notify, http, credentials, ai

@on_trigger
def run(event):
    auth = {"Authorization": "Bearer " + credentials.connection("tiktok", "main")}
    this_month = datetime.now(timezone.utc).replace(day=1, hour=0, minute=0, second=0, microsecond=0)
    last_month = (this_month - timedelta(days=1)).replace(day=1)
    start, end = last_month.timestamp(), this_month.timestamp()
    videos, cursor = [], None
    while True:
        body = {"max_count": 20, **({"cursor": cursor} if cursor else {})}
        data = http.post("https://open.tiktokapis.com/v2/video/list/", headers=auth, json=body,
                         params={"fields": "id,title,video_description,create_time,view_count,share_url"}).json()["data"]
        videos += [v for v in data["videos"] if start <= v["create_time"] < end]
        if not data["has_more"] or data["videos"][-1]["create_time"] < start:
            break
        cursor = data["cursor"]
    top = sorted(videos, key=lambda v: v["view_count"], reverse=True)[:5]
    listing = "\n".join(f"{v['view_count']:,} views  {v['title'] or v['video_description'][:80]}\n{v['share_url']}" for v in top)
    notes = ai.generate("In 3 short bullets, what do these top TikTok captions and topics have in common?\n\n" + listing, max_output_tokens=200).text
    notify.email_me(f"Top TikToks for {last_month:%B}", f"{listing}\n\nWhat they share:\n{notes}")
    return {"videos": len(videos)}