Get an AI first review on every pull request

from clickruntime import on_event, credentials, http, notify, verify, ai

def gh(method, path, **kw):
    resp = http.request(method, f"https://api.github.com{path}", headers={
        "Authorization": f"Bearer {credentials.connection('github', 'work')}", "Accept": "application/vnd.github+json"}, **kw)
    return resp.raise_for_status() or (resp.json() if resp.content else None)

SCHEMA = {"type": "object", "properties": {"verdict": {"type": "string"}, "review": {"type": "string"}}}

@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"}
    body = event.json
    if event.header("X-GitHub-Event") != "pull_request" or body["action"] not in ("opened", "ready_for_review"):
        return {"ignored": True}
    pr, repo = body["pull_request"], body["repository"]["full_name"]
    files = gh("GET", f"/repos/{repo}/pulls/{pr['number']}/files", params={"per_page": 100})
    diff = "\n".join(f"--- {f['filename']}\n{f.get('patch', '')}" for f in files
                     if not f["filename"].endswith((".lock", "package-lock.json", ".svg", ".png")))[:24000]
    result = ai.generate(f"PR: {pr['title']}\n{pr.get('body') or ''}\n\n{diff}", json_schema=SCHEMA, max_output_tokens=1200,
                         system="Review this diff. List likely bugs and risky changes with file names. Give a one-line verdict.").json
    gh("POST", f"/repos/{repo}/issues/{pr['number']}/comments", json={"body": f"**AI first review**\n\n{result['review']}"})
    notify.slack(f"<{pr['html_url']}|{repo}#{pr['number']} {pr['title']}>: {result['verdict']}", channel="#code-review")
    return {"reviewed": pr["number"]}