#!/usr/bin/env python3

from pathlib import Path
from datetime import datetime, timezone
import json

def timestamp():
    return datetime.now(timezone.utc).isoformat()

def write_json(path, payload):
    path = Path(path)
    path.parent.mkdir(parents=True, exist_ok=True)

    payload["generated_at"] = timestamp()

    tmp = path.with_suffix(".tmp")
    tmp.write_text(json.dumps(payload, indent=2) + "\n")
    tmp.replace(path)