app.py

import os
import sys
import threading
import subprocess
import time
import streamlit as st

# Check if running on Hugging Face Spaces
is_hf_space = os.environ.get('SPACE_ID') is not None

# Function to start Flask backend
def start_flask_backend():
    # Use Python executable to ensure compatibility with Streamlit's environment
    subprocess.run([sys.executable, 'api.py'])

# Only start the Flask server if it's not already running
def is_flask_running():
    try:
        import requests
        response = requests.get("http://localhost:5000/api/orders")
        return response.status_code == 200
    except:
        return False

# Start Flask in a separate thread if needed
if not is_flask_running():
    thread = threading.Thread(target=start_flask_backend)
    thread.daemon = True  # Daemon threads exit when the main program exits
    thread.start()
    
    # Wait a bit for Flask to start up
    time.sleep(2)
    
    # Check if Flask started successfully
    if not is_flask_running():
        st.error("Failed to start the backend server. Please check the logs.")
        st.stop()

# Now import and run the Streamlit app
import frontend_app

# Run the Streamlit app (this will call frontend_app.main())
frontend_app.main()