import os
import sys


def _safe_add(path: str) -> None:
    if not path or not os.path.isdir(path):
        return
    try:
        if hasattr(os, "add_dll_directory"):
            os.add_dll_directory(path)
    except Exception:
        pass
    try:
        os.environ["PATH"] = path + os.pathsep + os.environ.get("PATH", "")
    except Exception:
        pass


# PyInstaller onefile 解包目录
base = getattr(sys, "_MEIPASS", None)
if base:
    _safe_add(base)
    _safe_add(os.path.join(base, "lib-dynload"))
    _safe_add(os.path.join(base, "DLLs"))