import logging
from pathlib import Path
from typing import Optional


DEFAULT_LOG_FORMAT = "%(asctime)s - %(levelname)s - %(message)s"
DEFAULT_LOG_PATH = Path(__file__).resolve().parent.parent / "sublogue.log"


def configure_logging(
    level: int = logging.INFO,
    fmt: str = DEFAULT_LOG_FORMAT,
    log_path: Path = DEFAULT_LOG_PATH,
) -> None:
    """Configure console and root-level file logging for the application."""
    root_logger = logging.getLogger()

    if getattr(root_logger, "_sublogue_logging_configured", False):
        return

    formatter = logging.Formatter(fmt)
    handlers = [
        logging.StreamHandler(),
        logging.FileHandler(log_path, encoding="utf-8"),
    ]

    for handler in handlers:
        handler.setFormatter(formatter)
        root_logger.addHandler(handler)

    root_logger.setLevel(level)
    root_logger._sublogue_logging_configured = True


def get_logger(name: Optional[str] = None) -> logging.Logger:
    """Get a logger by name."""
    return logging.getLogger(name or __name__)