src/retrieval/env_utils.py

from __future__ import annotations

import os
from pathlib import Path


PROJECT_ROOT = Path(__file__).resolve().parents[2]


def load_env_file(path: Path = PROJECT_ROOT / ".env") -> None:
    if not path.exists():
        return

    for line in path.read_text(encoding="utf-8-sig").splitlines():
        line = line.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue

        key, value = line.split("=", 1)
        key = key.strip()
        value = value.strip().strip('"').strip("'")

        if key and key not in os.environ:
            os.environ[key] = value