import streamlit as st
import requests

# API_CHAT_URL = "http://localhost:8000/chat/"
# API_UPLOAD_URL = "http://localhost:8000/upload/"

API_CHAT_URL = "https://dewasheesh-helpdev.hf.space/chat/"
API_UPLOAD_URL = "https://dewasheesh-helpdev.hf.space/upload/"


st.title("📚 HelpDevelopers RAG Chatbot")

# PDF Upload Section
st.header("📤 Upload a PDF")
uploaded_file = st.file_uploader("Choose a PDF to upload", type="pdf")

if uploaded_file is not None:
    if st.button("Upload"):
        with st.spinner("Uploading..."):
            files = {"file": (uploaded_file.name,
                              uploaded_file, "application/pdf")}
            res = requests.post(API_UPLOAD_URL, files=files)
            if res.status_code == 200:
                st.success(f"{uploaded_file.name} uploaded successfully!")
            else:
                st.error("Upload failed.")

# Chat Section
st.header("💬 Ask a Question")
query = st.text_input("Your question:")
if st.button("Submit"):
    if query:
        with st.spinner("Thinking..."):
            res = requests.post(API_CHAT_URL, json={
                                "query": query, "top_k": 3})
            if res.status_code == 200:
                st.success(res.json().get("answer", "No response."))
            else:
                st.error(f"Error: {res.text}")