import httpx
from openai import AsyncOpenAI

from services.runtime_settings import get_ai_settings

_client_cache: dict[tuple[str, str], AsyncOpenAI] = {}
_http_client_cache: dict[tuple[str, str], httpx.AsyncClient] = {}


async def get_openai_client() -> tuple[AsyncOpenAI, dict]:
    settings = await get_ai_settings()
    cache_key = (
        settings.get("ai_base_url") or "",
        settings.get("ai_api_key") or "",
    )

    if cache_key not in _client_cache:
        for http_client in _http_client_cache.values():
            await http_client.aclose()
        _client_cache.clear()
        _http_client_cache.clear()

        http_client = httpx.AsyncClient(timeout=httpx.Timeout(600.0, connect=30.0))
        _http_client_cache[cache_key] = http_client
        _client_cache[cache_key] = AsyncOpenAI(
            api_key=settings.get("ai_api_key") or "missing",
            base_url=settings.get("ai_base_url"),
            http_client=http_client,
        )

    return _client_cache[cache_key], settings