background_task/utils.py

import os, shutil, tempfile

def safe_copy_temp(src_path: str, suffix: str) -> str:
    """Copy a file to a managed temp path so the caller can delete their tmp safely."""
    out = tempfile.NamedTemporaryFile(delete=False, suffix=suffix)
    out.close()
    shutil.copyfile(src_path, out.name)
    return out.name

def safe_unlink(path: str) -> None:
    try: os.unlink(path)
    except Exception: pass