"""Temporal client helpers."""

import asyncio

from temporalio.client import Client

from app.config.settings import get_settings

_client: Client | None = None
_client_lock = asyncio.Lock()


async def get_temporal_client() -> Client:
    """Return a cached Temporal client."""

    global _client
    if _client is not None:
        return _client

    async with _client_lock:
        if _client is None:
            settings = get_settings()
            _client = await Client.connect(
                settings.temporal_address,
                namespace=settings.temporal_namespace,
            )
    return _client


def set_temporal_client(client: Client | None) -> None:
    """Override the cached Temporal client, primarily for tests."""

    global _client
    _client = client