import logging
import sys
from pathlib import Path

LOG_DIR = Path(__file__).parent.parent / "logs"
LOG_DIR.mkdir(parents=True, exist_ok=True)
LOG_FILE = LOG_DIR / "chatbot.log"

LOG_FORMAT = "%(asctime)s | %(levelname)-8s | %(name)s | %(message)s"
DATE_FORMAT = "%Y-%m-%d %H:%M:%S"

def get_logger(name: str) -> logging.Logger:
    logger = logging.getLogger(name)

    if logger.handlers:
        return logger

    logger.setLevel(logging.DEBUG)

    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setLevel(logging.INFO)
    console_handler.setFormatter(logging.Formatter(LOG_FORMAT, datefmt=DATE_FORMAT))

    file_handler = logging.FileHandler(LOG_FILE, encoding="utf-8")
    file_handler.setLevel(logging.DEBUG)
    file_handler.setFormatter(logging.Formatter(LOG_FORMAT, datefmt=DATE_FORMAT))

    logger.addHandler(console_handler)
    logger.addHandler(file_handler)

    return logger