"""
LLM client: OpenAI-compatible, truyền key và model linh hoạt.
"""
from __future__ import annotations
 
from openai import OpenAI, AsyncOpenAI
from backend.core.config import get_settings
 
 
def get_sync_client(api_key: str | None = None) -> OpenAI:
    s = get_settings()
    return OpenAI(
        base_url=s.llm_base_url,
        api_key=api_key or s.llm_api_key,
    )
 
 
def get_async_client(api_key: str | None = None) -> AsyncOpenAI:
    s = get_settings()
    return AsyncOpenAI(
        base_url=s.llm_base_url,
        api_key=api_key or s.llm_api_key,
    )