"""Shared async Qdrant client (singleton) for search + semantic cache."""

from __future__ import annotations

from typing import TYPE_CHECKING

from app.config import settings

if TYPE_CHECKING:
    from qdrant_client import AsyncQdrantClient

_async_client: AsyncQdrantClient | None = None


def get_async_qdrant_client() -> AsyncQdrantClient:
    """Return a process-wide ``AsyncQdrantClient`` (avoids per-request connection churn)."""
    global _async_client
    if _async_client is None:
        from qdrant_client import AsyncQdrantClient

        _async_client = AsyncQdrantClient(
            url=settings.qdrant_url,
            api_key=settings.qdrant_api_key or None,
        )
    return _async_client


def reset_async_qdrant_client() -> None:
    """Drop the shared client (tests / vectorstore factory reset)."""
    global _async_client
    _async_client = None