from typing import Dict, Any, List, Optional

class OpenAICompatibleService:
    def __init__(self, http_client):
        self.http_client = http_client
    
    def chat_completion(self, chat_id: str, messages: List[Dict[str, Any]], 
                       stream: bool = False, model: str = "model",
                       extra_body: Dict = None) -> Dict[str, Any]:
        endpoint = f"/api/v1/chats_openai/{chat_id}/chat/completions"
        
        data = {
            "model": model,
            "messages": messages,
            "stream": stream
        }
        if extra_body is not None:
            data["extra_body"] = extra_body
        
        response = self.http_client.post(endpoint, json_data=data)
        
        if response.get("code") == 0:
            return response.get("data", response)
        else:
            raise Exception(f"聊天完成失败: {response.get('message', '未知错误')}")
    
    def agent_completion(self, agent_id: str, messages: List[Dict[str, Any]], 
                        stream: bool = False, model: str = "model",
                        session_id: str = None) -> Dict[str, Any]:
        endpoint = f"/api/v1/agents_openai/{agent_id}/chat/completions"
        
        data = {
            "model": model,
            "messages": messages,
            "stream": stream
        }
        if session_id is not None:
            data["session_id"] = session_id
        
        response = self.http_client.post(endpoint, json=data)
        
        if response.get("code") == 0:
            return response.get("data", response)
        else:
            raise Exception(f"代理完成失败: {response.get('message', '未知错误')}")