#!/usr/bin/env python3
"""
Logger

Utility for setting up logging in Python scripts.
"""

import os
import sys
import logging
from datetime import datetime
from typing import Optional

def setup_logger(name: str, log_level: int = logging.INFO, log_file: Optional[str] = None) -> logging.Logger:
    """
    Set up a logger with the specified name and log level.
    
    Args:
        name: Name of the logger
        log_level: Logging level (default: INFO)
        log_file: Path to log file (default: None, logs to console only)
        
    Returns:
        Configured logger instance
    """
    # Create logger
    logger = logging.getLogger(name)
    logger.setLevel(log_level)
    
    # Create formatter
    formatter = logging.Formatter(
        '%(asctime)s - %(name)s - %(levelname)s - %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S'
    )
    
    # Create console handler
    console_handler = logging.StreamHandler()
    console_handler.setLevel(log_level)
    console_handler.setFormatter(formatter)
    logger.addHandler(console_handler)
    
    # Create file handler if log_file is specified
    if log_file:
        # Create logs directory if it doesn't exist
        log_dir = os.path.dirname(log_file)
        if log_dir and not os.path.exists(log_dir):
            os.makedirs(log_dir)
            
        file_handler = logging.FileHandler(log_file)
        file_handler.setLevel(log_level)
        file_handler.setFormatter(formatter)
        logger.addHandler(file_handler)
    
    return logger