"""Permissions 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.permissions.models import Permission, ShareLink


class PermissionsContract:
    """Public contract for the permissions plugin."""

    contract_name = "permissions"

    Permission = Permission
    ShareLink = ShareLink


# ─── self-registration ───

_contract = PermissionsContract()
get_contract_registry().register("permissions", _contract)

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


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


__all__ = ["PermissionsContract", "Permission", "ShareLink"]