import json
import logging
from urllib.parse import urlsplit, urlunsplit


def redacted_url(url: str) -> str:
    parsed = urlsplit(url)
    host = parsed.hostname or ""
    if ":" in host and not host.startswith("["):
        host = f"[{host}]"
    if parsed.port:
        host = f"{host}:{parsed.port}"
    return urlunsplit((parsed.scheme, host, parsed.path, "REDACTED" if parsed.query else "", ""))


def log_event(logger: logging.Logger, event: str, **fields: object) -> None:
    logger.info(json.dumps({"event": event, **fields}, default=str, sort_keys=True))