Replace a link in every video description

from clickruntime import on_event, credentials, http, notify

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

@on_event
def handle(event):
    old, new = event.json["old"], event.json["new"]
    h = {"Authorization": f"Bearer {credentials.connection('google', 'work')}"}
    uploads = http.get(f"{YT}/channels", headers=h, params={"part": "contentDetails", "mine": "true"}).json()["items"][0]["contentDetails"]["relatedPlaylists"]["uploads"]
    changed, page = 0, None
    while True:
        res = http.get(f"{YT}/playlistItems", headers=h, params={"part": "contentDetails", "playlistId": uploads, "maxResults": 50, "pageToken": page}).json()
        ids = ",".join(i["contentDetails"]["videoId"] for i in res["items"])
        for v in http.get(f"{YT}/videos", headers=h, params={"part": "snippet", "id": ids}).json()["items"]:
            if old in v["snippet"]["description"]:
                snippet = {**v["snippet"], "description": v["snippet"]["description"].replace(old, new)}
                http.put(f"{YT}/videos", headers=h, params={"part": "snippet"}, json={"id": v["id"], "snippet": snippet})
                changed += 1
        page = res.get("nextPageToken")
        if not page:
            break
    notify.email_me("Descriptions updated", f"Replaced the text in {changed} videos.")
    return {"changed": changed}