logging_config.py

import logging
import sys
from pathlib import Path
from datetime import datetime
import os

def setup_logging(log_level=logging.DEBUG):
    """
    Setup logging configuration with both console and file handlers.
    
    Args:
        log_level: Logging level (e.g., logging.DEBUG, logging.INFO)
    """
    # Create logs directory if it doesn't exist
    log_dir = Path("logs")
    log_dir.mkdir(exist_ok=True)
    
    # Create a custom logger
    logger = logging.getLogger()
    logger.setLevel(log_level)
    
    # Clear any existing handlers to avoid duplicate logs
    for handler in logger.handlers[:]:
        logger.removeHandler(handler)
    
    # Create formatters
    console_formatter = logging.Formatter(
        '%(asctime)s - %(name)s - %(levelname)s - %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S'
    )
    
    file_formatter = logging.Formatter(
        '%(asctime)s - %(name)s - %(levelname)s - %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S'
    )
    
    # Console handler
    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setLevel(log_level)
    console_handler.setFormatter(console_formatter)
    
    # File handler - one file per day
    log_file = log_dir / f"app_{datetime.now().strftime('%Y%m%d')}.log"
    file_handler = logging.FileHandler(log_file, encoding='utf-8')
    file_handler.setLevel(log_level)
    file_handler.setFormatter(file_formatter)
    
    # Add handlers to the logger
    logger.addHandler(console_handler)
    logger.addHandler(file_handler)
    
    # Log the start of the application
    logger.info("=" * 80)
    logger.info(f"Application started at {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")
    logger.info(f"Log level set to: {logging.getLevelName(log_level)}")
    logger.info("=" * 80)
    
    return logger