import json
import logging
from datetime import UTC, datetime

_STANDARD = set(logging.makeLogRecord({}).__dict__) | {"message", "asctime"}


class JsonFormatter(logging.Formatter):
    def format(self, record: logging.LogRecord) -> str:
        payload: dict[str, object] = {
            "timestamp": datetime.now(UTC).isoformat(),
            "level": record.levelname,
            "event": record.getMessage(),
        }
        for key, value in record.__dict__.items():
            if key not in _STANDARD and key not in {"args", "msg"}:
                payload[key] = value
        return json.dumps(payload, default=str, separators=(",", ":"))


def configure_logging(level: str) -> None:
    handler = logging.StreamHandler()
    handler.setFormatter(JsonFormatter())
    root = logging.getLogger()
    root.handlers[:] = [handler]
    root.setLevel(level.upper())