app.py

import os
import uvicorn
from fastapi import FastAPI
from starlette.middleware.wsgi import WSGIMiddleware
from starlette.responses import RedirectResponse

# Use this library to make Streamlit WSGI-compatible
from streamlit_wsgi import StreamlitPatcher

# Import your FastAPI app
from api.main import api_app

# Create and patch the Streamlit app
sp = StreamlitPatcher()
streamlit_script_path = os.path.join("streamlit_app", "app.py")
streamlit_app = sp.create_app(streamlit_script_path)
sp.patch() # Apply patches for Streamlit to work correctly

# The main FastAPI app that will serve everything
app = FastAPI()

# Mount the API and the Streamlit UI
app.mount('/api', api_app)
app.mount('/ui', WSGIMiddleware(streamlit_app))

@app.get("/")
def root():
    # Redirect root to the Streamlit UI
    return RedirectResponse(url="/ui")