import typing
from typing import Callable


class Logger:
    """A simple logger class that can be initialized with a logging function."""

    def __init__(self) -> None:
        """Initializes the Logger, defaulting to the print function."""
        self._log_func: Callable[[str], None] = print

    def init_logger(self, log_func: Callable[[str], None]) -> None:
        """
        Initializes the logger with a specific logging function.

        Args:
            log_func: The function to use for logging. It should accept a single
                      string argument.
        """
        self._log_func = log_func

    def log(self, message: str) -> None:
        """
        Logs a message using the configured logging function.

        Args:
            message: The message to log.
        """
        self._log_func(message)


# Global instance
app_logger: Logger = Logger()