logging_configuration.py

import logging, colorlog

import os


def configure_logging(log_file_name: str, logger_name: str = None):
    """
        Configure a logger with console and file output.
        
        Args:
            log_file_name: Name of the log file (e.g., "compression_log.txt")
            logger_name: Optional name for the logger. If None, uses log_file_name without extension.
    
        Returns:
            Configured logger instance
    """
    if logger_name is None:
        logger_name = log_file_name.replace(".txt", "")
    
    logger = colorlog.getLogger(logger_name)   # Create a logger object
    logger.handlers.clear()  # Avoid duplicate handlers on reload
    logger.setLevel(logging.DEBUG)
    logger.propagate = False

    # Configure logging to output messages to the console with color formatting
    handler = colorlog.StreamHandler()
    handler.setLevel(logging.DEBUG)
    handler.setFormatter(colorlog.ColoredFormatter(
        "%(log_color)s%(levelname)s: %(message)s",  # Customize the log message format
        log_colors=
        {  # Customize the colors for different log levels
            "DEBUG": "blue",
            "INFO": "green",
            "WARNING": "yellow",
            "ERROR": "red",
            "CRITICAL": "red,bg_white",
        }
    ))

    os.makedirs("Logs", exist_ok=True)  # Ensure Logs directory exists for file output
    file_handler = logging.FileHandler(os.path.join("Logs", log_file_name),
                                       mode="w", encoding="utf-8",  delay=False) # Create a file handler to write log messages to a text file
    file_handler.setLevel(logging.DEBUG)
    file_handler.setFormatter(logging.Formatter("%(asctime)s %(levelname)s: %(message)s", datefmt="%Y-%m-%d %H:%M:%S"))

    logger.addHandler(handler)
    logger.addHandler(file_handler)

    return logger


# Create separate loggers for compression and decompression
compression_logger = configure_logging("compression_log.txt", "compression")
decompression_logger = configure_logging("decompression_log.txt", "decompression")