# logger.py
import logging
import sys
from pathlib import Path
from datetime import datetime

def setup_logger(name: str, log_file: str = None) -> logging.Logger:
    """Thiết lập logger"""
    logger = logging.getLogger(name)
    logger.setLevel(logging.DEBUG)
    
    # Console handler
    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setLevel(logging.INFO)
    console_format = logging.Formatter(
        '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
    )
    console_handler.setFormatter(console_format)
    logger.addHandler(console_handler)
    
    # File handler (optional)
    if log_file:
        Path(log_file).parent.mkdir(parents=True, exist_ok=True)
        file_handler = logging.FileHandler(log_file)
        file_handler.setLevel(logging.DEBUG)
        file_format = logging.Formatter(
            '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
        )
        file_handler.setFormatter(file_format)
        logger.addHandler(file_handler)
    
    return logger

# Initialize main logger
logger = setup_logger(
    'water_sort_app',
    log_file=f'logs/app_{datetime.now().strftime("%Y%m%d_%H%M%S")}.log'
)