"""JARVIS logging helper."""
import logging
from typing import Optional

FORMAT = "[%(asctime)s] [%(name)s] [%(levelname)8s] %(message)s"

handler = logging.StreamHandler()

LOGGER = None


def get_logger(name: str, fmt: Optional[str] = FORMAT) -> logging.Logger:
    """
    Get a pre-configured logger

    Args:
        name: Name of the logger
    """
    global LOGGER
    if not (logger := LOGGER):
        logger = logging.getLogger(name)
        formatter = logging.Formatter(fmt)
        handler.setFormatter(formatter)
        logger.addHandler(handler)
        LOGGER = logger
    return logger