app/streamlit_test.py

import streamlit as st
import os
from langserve.client import RemoteRunnable
from httpx import HTTPStatusError
from dotenv import load_dotenv

# Load the environment variable
load_dotenv()

# Get the API key from environment variables
token = os.environ.get("BACK_API_KEY")

# Initialize the RemoteRunnable with your API endpoint and headers
rag_app = RemoteRunnable("http://127.0.0.1:8000/rag-chroma/", headers={"x-api-key": f"{token}"})

# Streamlit app
def main():
    # Title of the app
    st.title("Question Answering App")
    
    # User input
    question = st.text_input("Type your question here:")
    
    # Button to send the question
    if st.button("Get Answer"):
        try:
            # Use the RemoteRunnable to send the question and get the answer
            answer = rag_app.invoke(question)
            # Display the answer
            st.success(answer)
        except HTTPStatusError as e:
            # Handle potential errors from the API call
            st.error(f"Failed to get an answer. Error: {e}")
            
if __name__ == "__main__":
    main()