"""
Logging utilities for CompI project.
"""

import logging
import sys
from pathlib import Path
from src.config import LOG_LEVEL, LOG_FORMAT, PROJECT_ROOT

def setup_logger(name: str, log_file: str = None) -> logging.Logger:
    """
    Set up a logger with console and optional file output.
    
    Args:
        name: Logger name
        log_file: Optional log file path
        
    Returns:
        Configured logger instance
    """
    logger = logging.getLogger(name)
    logger.setLevel(getattr(logging, LOG_LEVEL.upper()))
    
    # Clear existing handlers
    logger.handlers.clear()
    
    # Console handler
    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setLevel(logging.INFO)
    console_formatter = logging.Formatter(LOG_FORMAT)
    console_handler.setFormatter(console_formatter)
    logger.addHandler(console_handler)
    
    # File handler (optional)
    if log_file:
        log_path = PROJECT_ROOT / "logs"
        log_path.mkdir(exist_ok=True)
        
        file_handler = logging.FileHandler(log_path / log_file)
        file_handler.setLevel(logging.DEBUG)
        file_formatter = logging.Formatter(LOG_FORMAT)
        file_handler.setFormatter(file_formatter)
        logger.addHandler(file_handler)
    
    return logger