"""日志配置。"""

from __future__ import annotations

import logging
import os
from logging.handlers import RotatingFileHandler


def setup_logging(app) -> None:
    os.makedirs(app.config.get("LOG_DIR", "logs"), exist_ok=True)
    level = getattr(logging, app.config.get("LOG_LEVEL", "INFO"), logging.INFO)
    app.logger.setLevel(level)

    log_file = os.path.join(app.config.get("LOG_DIR", "logs"), "app.log")
    handler = RotatingFileHandler(
        log_file,
        maxBytes=app.config.get("LOG_MAX_BYTES", 10 * 1024 * 1024),
        backupCount=app.config.get("LOG_BACKUP_COUNT", 5),
        encoding="utf-8",
    )
    handler.setFormatter(logging.Formatter("%(asctime)s %(levelname)s %(name)s %(message)s"))
    handler.setLevel(level)

    if not any(isinstance(item, RotatingFileHandler) and item.baseFilename == handler.baseFilename for item in app.logger.handlers):
        app.logger.addHandler(handler)


def get_logger(name: str | None = None) -> logging.Logger:
    if name:
        return logging.getLogger(f"app.{name}")
    return logging.getLogger("app")