"""Simple on-disk registry interface for GoC entries."""

import json
import os
from pathlib import Path
from typing import Any, Dict, Union

from .dsl import RegistryEntry


def registry_path() -> Path:
    return Path(os.environ.get("GOC_REGISTRY_PATH", "registry/registry.json"))


def load_registry() -> Dict[str, Any]:
    path = registry_path()
    if not path.exists():
        return {}
    with path.open("r", encoding="utf-8") as f:
        return json.load(f)


def save_registry(entry: Union[Dict[str, Any], RegistryEntry]) -> None:
    path = registry_path()
    path.parent.mkdir(parents=True, exist_ok=True)
    payload = entry.to_dict() if isinstance(entry, RegistryEntry) else entry
    with path.open("w", encoding="utf-8") as f:
        json.dump(payload, f, indent=2, sort_keys=True)