# logging_config.py

import logging
import logging.handlers
from pathlib import Path


LOG_DIR = Path("logs")
LOG_DIR.mkdir(exist_ok=True)

LOG_FILE = LOG_DIR / "app.log"


def setup_logging():
    formatter = logging.Formatter(
        fmt="%(asctime)s | %(levelname)-8s | %(threadName)s | %(name)s | %(message)s",
        datefmt="%Y-%m-%d %H:%M:%S",
    )

    # logger główny
    logger = logging.getLogger()

    logger.setLevel(logging.DEBUG)

    # zabezpieczenie przed dodaniem handlerów drugi raz
    if logger.handlers:
        return

    # console
    console_handler = logging.StreamHandler()
    console_handler.setLevel(logging.INFO)
    console_handler.setFormatter(formatter)

    # plik
    file_handler = logging.handlers.RotatingFileHandler(
        LOG_FILE,
        maxBytes=5_000_000,
        backupCount=3,
        encoding="utf-8",
    )

    file_handler.setLevel(logging.DEBUG)
    file_handler.setFormatter(formatter)

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