from dataclasses import dataclass
from typing import Dict, List


@dataclass
class GoCRegistryEntry:
    adapter_id: str
    supported_domains: List[str]
    contract_version: str


class GoCRegistry:
    """Lightweight in-memory Graph-of-Contracts registry stub."""

    def __init__(self) -> None:
        self._registry: Dict[str, GoCRegistryEntry] = {}

    def register(self, entry: GoCRegistryEntry) -> None:
        self._registry[entry.adapter_id] = entry

    def get(self, adapter_id: str) -> GoCRegistryEntry:
        return self._registry[adapter_id]

    def list_all(self) -> List[GoCRegistryEntry]:
        return list(self._registry.values())