"""GraphRAG plugin contract — public interface for cross-plugin access."""

from __future__ import annotations

from app.plugins.builtins.contracts import get_contract_registry
from app.plugins.builtins.graph_rag.provider import GraphRAGSearchProvider


class GraphRagContract:
    """Public contract for the graph_rag plugin."""

    contract_name = "graph_rag"

    GraphRAGSearchProvider = GraphRAGSearchProvider


# ─── self-registration ───

_contract = GraphRagContract()
get_contract_registry().register("graph_rag", _contract)

# Backward-compatible local accessor
_contract_instance: GraphRagContract | None = None


def get_contract() -> GraphRagContract:
    global _contract_instance
    if _contract_instance is None:
        _contract_instance = GraphRagContract()
    return _contract_instance


__all__ = ["GraphRagContract", "GraphRAGSearchProvider"]