from openai import OpenAI
from config import Config

class OpenAIClient:
    """OpenAI客户端单例"""
    
    _instance = None
    _client = None
    
    def __new__(cls):
        if cls._instance is None:
            cls._instance = super(OpenAIClient, cls).__new__(cls)
        return cls._instance
    
    def __init__(self):
        if self._client is None:
            self._client = OpenAI(
                api_key=Config.OPENAI_API_KEY,
                base_url=Config.OPENAI_BASE_URL
            )
    
    @property
    def client(self):
        return self._client
    
    @classmethod
    def get_client(cls) -> OpenAI:
        """获取OpenAI客户端实例"""
        instance = cls()
        return instance.client