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app.py

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+
+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)

requirements.txt

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+streamlit==1.35.0
+requests==2.32.3