import logging, os
from logging.handlers import RotatingFileHandler

def get_logger(name="bot"):
    log = logging.getLogger(name)
    if log.handlers:
        return log
    log.setLevel(logging.INFO)
    fmt = logging.Formatter("%(asctime)s | %(levelname)s | %(message)s")
    os.makedirs("logs", exist_ok=True)
    fh = RotatingFileHandler("logs/bot.log", maxBytes=2_000_000, backupCount=5, encoding="utf-8")
    fh.setFormatter(fmt)
    sh = logging.StreamHandler()
    sh.setFormatter(fmt)
    log.addHandler(fh); log.addHandler(sh)
    return log