backend/worker/hf_env_files.py

from __future__ import annotations

import os
from pathlib import Path

def _looks_like_json(s: str) -> bool:
    s = (s or "").strip()
    return s.startswith("{") and s.endswith("}")

def resolve_json_or_path(env_name: str, default_path: Path, out_path: Path) -> Path:
    raw = (os.environ.get(env_name) or "").strip()
    if not raw:
        return default_path

    if _looks_like_json(raw):
        out_path.parent.mkdir(parents=True, exist_ok=True)
        out_path.write_text(raw, encoding="utf-8")
        return out_path

    return Path(raw)