app.py

import os, requests, streamlit as st

st.set_page_config(page_title="FoodHub Chatbot", layout="centered")
st.title("FoodHub Customer Support Chatbot")

BACKEND_URL = os.getenv("BACKEND_URL", "https://YOUR-ORG-FoodHubChatBackend.hf.space")

if "messages" not in st.session_state:
    st.session_state.messages = []

for m in st.session_state.messages:
    with st.chat_message(m["role"]):
        st.markdown(m["content"])

prompt = st.chat_input("Ask about your order (e.g., 'Where is my order O12501 for C1026?')")
if prompt:
    st.session_state.messages.append({"role":"user","content":prompt})
    with st.chat_message("user"):
        st.markdown(prompt)

    import re
    oid = (re.search(r"O\d{5,}", prompt).group(0) if re.search(r"O\d{5,}", prompt) else None)
    cid = (re.search(r"C\d{4,}", prompt).group(0) if re.search(r"C\d{4,}", prompt) else None)

    try:
        r = requests.post(f"{BACKEND_URL}/v1/chat", json={"message": prompt, "order_id": oid, "cust_id": cid}, timeout=30)
        reply = r.json().get("reply", "Sorry, something went wrong.")
    except Exception as e:
        reply = f"Backend error: {e}"

    st.session_state.messages.append({"role":"assistant","content":reply})
    with st.chat_message("assistant"):
        st.markdown(reply)