"""Graph-of-Contracts registry: minimal schema and adapter registration.

This registry stores contract descriptors and adapter metadata. It's intentionally
lightweight and uses JSON-serializable structures so adapters can be validated.
"""
from typing import Dict, Any
import time
import uuid


class Registry:
    def __init__(self):
        # contracts keyed by name -> metadata
        self._contracts: Dict[str, Dict[str, Any]] = {}
        self._adapters: Dict[str, Dict[str, Any]] = {}

    def register_contract(self, name: str, schema: Dict[str, Any], version: str = "0.1") -> str:
        contract_id = f"{name}:{version}"
        self._contracts[contract_id] = {
            "name": name,
            "version": version,
            "schema": schema,
            "registered_at": time.time(),
            "id": contract_id,
        }
        return contract_id

    def get_contract(self, contract_id: str) -> Dict[str, Any]:
        return self._contracts[contract_id]

    def register_adapter(self, adapter_name: str, contract_id: str, meta: Dict[str, Any]) -> str:
        adapter_id = f"{adapter_name}:{str(uuid.uuid4())[:8]}"
        self._adapters[adapter_id] = {
            "name": adapter_name,
            "contract_id": contract_id,
            "meta": meta,
            "registered_at": time.time(),
            "id": adapter_id,
        }
        return adapter_id

    def list_adapters(self):
        return list(self._adapters.values())