# app/services/openai_service.py
import openai
import os
from openai import OpenAI
from openai import OpenAIError
from app.core.config import DEEPSEEK_API_BASE, DEEPSEEK_MODEL, DEEPSEEK_API_KEY

# Ensure the API key is properly set
if not DEEPSEEK_API_KEY:
    raise ValueError("DEEPSEEK_API_KEY is not set in environment variables")

# Initialize the client with proper configuration
client = OpenAI(
    api_key=DEEPSEEK_API_KEY,
    base_url=DEEPSEEK_API_BASE
)

async def chat_with_openai(messages: list):
    if not messages:
        raise ValueError("Messages list cannot be empty")

    try:
        response = client.chat.completions.create(
            model=DEEPSEEK_MODEL,
            messages=messages,
            max_tokens=1000,
            temperature=0.7,
            stream=False
        )
        
        if not response.choices or not response.choices[0].message.content:
            return "No response content from the model"
            
        return response.choices[0].message.content
        
    except OpenAIError as e:
        error_msg = f"DeepSeek API Error: {str(e)}"
        print(error_msg)
        raise Exception(error_msg) from e
    except Exception as e:
        error_msg = f"Unexpected error: {str(e)}"
        print(error_msg)
        raise Exception(error_msg) from e