Turn a PDF sent to Telegram into a blog post you approve

import io
from pypdf import PdfReader
from clickruntime import on_event, credentials, http, ai

APPROVERS = {123456789}
SCHEMA = {"type": "object", "properties": {k: {"type": "string"} for k in ["title", "excerpt", "body_html"]}, "required": ["title", "excerpt", "body_html"]}
WP = "https://blog.example.com/wp-json/wp/v2"

def wp(method, path, **kw):
    r = http.request(method, f"{WP}/{path}", auth=(credentials.secret("WP_USER"), credentials.secret("WP_APP_PASSWORD")), **kw)
    r.raise_for_status()
    return r.json()
def telegram(method, **payload):
    return http.post(f"https://api.telegram.org/bot{credentials.secret('TELEGRAM_BOT_TOKEN')}/{method}", json=payload).json()

@on_event
def handle(event):
    update = event.json or {}
    if cb := update.get("callback_query"):
        if cb["from"]["id"] in APPROVERS and cb["data"].startswith("approve:"):
            post = wp("POST", f"posts/{cb['data'].split(':')[1]}", json={"status": "publish"})
            telegram("sendMessage", chat_id=cb["message"]["chat"]["id"], text=f"Published: {post['link']}")
        return {"callback": True}
    msg = update.get("message") or {}
    if not msg.get("document") or msg["from"]["id"] not in APPROVERS:
        return {"ignored": True}
    path = telegram("getFile", file_id=msg["document"]["file_id"])["result"]["file_path"]
    pdf = http.get(f"https://api.telegram.org/file/bot{credentials.secret('TELEGRAM_BOT_TOKEN')}/{path}").content
    text = " ".join(p.extract_text() or "" for p in PdfReader(io.BytesIO(pdf)).pages)[:20000]
    art = ai.generate(f"Turn this document into a 900-word blog post with H2 headings (HTML body):\n{text}", json_schema=SCHEMA, max_output_tokens=2048).json
    post = wp("POST", "posts", json={"title": art["title"], "excerpt": art["excerpt"], "content": art["body_html"], "status": "draft"})
    telegram("sendMessage", chat_id=msg["chat"]["id"], text=f"Draft ready: {art['title']}\n{post['link']}&preview=true",
             reply_markup={"inline_keyboard": [[{"text": "Approve", "callback_data": f"approve:{post['id']}"}]]})
    return {"draft": post["id"]}