model_api.py

from huggingface_hub import InferenceClient
import os
import json
import re

def query_model(prompt):
    try:
        import streamlit as st

        HF_TOKEN = st.secrets["HF_TOKEN"]

        client = InferenceClient(
            provider="auto",
            api_key=HF_TOKEN
        )

        response = client.chat.completions.create(
            model="Qwen/Qwen2.5-7B-Instruct",
            messages=[
                {"role": "system", "content": "You are a professional fitness trainer that returns ONLY JSON workout plans."},
                {"role": "user", "content": prompt}
            ],
            max_tokens=1200,
            temperature=0.6
        )

        result = response.choices[0].message.content

        # Remove markdown JSON blocks if model returns ```json ```
        result = re.sub(r"```json|```", "", result).strip()

        try:
            result_json = json.loads(result)
            return result_json
        except json.JSONDecodeError:
            return {"error": "Model returned invalid JSON", "raw_output": result}

    except Exception as e:
        return {"error": str(e)}