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

from __future__ import annotations

from app.plugins.builtins.dms.models import File as DmsFile, Folder


class DmsContract:
    """Public contract for the DMS plugin."""

    DmsFile = DmsFile
    Folder = Folder


_contract_instance: DmsContract | None = None


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