Get GitHub issue updates on Telegram

from clickruntime import on_event, credentials, http, verify

CHAT_ID = "123456789"

def telegram(text):
    http.post(f"https://api.telegram.org/bot{credentials.secret('TELEGRAM_BOT_TOKEN')}/sendMessage",
              json={"chat_id": CHAT_ID, "text": text, "disable_web_page_preview": True}).raise_for_status()

@on_event
def handle(event):
    if not verify.github(event.body, event.header("X-Hub-Signature-256"), credentials.secret("GITHUB_WEBHOOK_SECRET")):
        return {"ignored": "bad signature"}
    kind, body = event.header("X-GitHub-Event"), event.json
    if kind not in ("issues", "issue_comment") or body["action"] not in ("opened", "created", "closed", "reopened"):
        return {"ignored": True}
    issue, repo = body["issue"], body["repository"]["full_name"]
    if kind == "issue_comment":
        text = f"💬 {body['comment']['user']['login']} commented on {repo}#{issue['number']} {issue['title']}\n{body['comment']['body'][:300]}"
    else:
        icon = {"opened": "🆕", "closed": "✅", "reopened": "🔁"}[body["action"]]
        text = f"{icon} {repo}#{issue['number']} {body['action']}: {issue['title']}"
    telegram(f"{text}\n{issue['html_url']}")
    return {"sent": True}