"""Logging configuration."""

import logging
import sys
from pathlib import Path
from logging.handlers import RotatingFileHandler


def setup_logger(
    name: str = None,
    log_level: int = logging.INFO,
    log_file: str = "logs/bot.log"
) -> logging.Logger:
    root = logging.getLogger()

    # Не добавляем хендлеры повторно
    if root.handlers:
        return logging.getLogger(name) if name else root

    root.setLevel(log_level)

    console_formatter = logging.Formatter(
        '%(asctime)s | %(levelname)-8s | %(name)s | %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S'
    )
    file_formatter = logging.Formatter(
        '%(asctime)s | %(levelname)-8s | %(name)s | %(funcName)s:%(lineno)d | %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S'
    )

    if hasattr(sys.stdout, "reconfigure"):
        sys.stdout.reconfigure(encoding="utf-8", errors="replace")

    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setLevel(log_level)
    console_handler.setFormatter(console_formatter)
    root.addHandler(console_handler)

    if log_file:
        Path(log_file).parent.mkdir(parents=True, exist_ok=True)
        file_handler = RotatingFileHandler(
            log_file,
            maxBytes=10 * 1024 * 1024,
            backupCount=5,
            encoding='utf-8'
        )
        file_handler.setLevel(log_level)
        file_handler.setFormatter(file_formatter)
        root.addHandler(file_handler)

    return logging.getLogger(name) if name else root


logger = setup_logger()