import os
import requests

HF_TOKEN = os.getenv("HF_TOKEN")

if not HF_TOKEN:
    raise RuntimeError("❌ HF_TOKEN not set")

API_URL = "https://router.huggingface.co/hf-inference/models/stabilityai/stable-diffusion-xl-base-1.0"

HEADERS = {
    "Authorization": f"Bearer {HF_TOKEN}",
    "Content-Type": "application/json"
}

def generate_image(prompt: str) -> bytes:
    payload = {
        "inputs": prompt,
        "parameters": {
            "width": 1024,
            "height": 1024,
            "num_inference_steps": 30,
            "guidance_scale": 7.5
        }
    }

    response = requests.post(
        API_URL,
        headers=HEADERS,
        json=payload,
        timeout=120
    )

    if response.status_code != 200:
        raise RuntimeError(response.text)

    return response.content