Update src/streamlit_app.py

src/streamlit_app.py

@@ -1,40 +1,79 @@
-import altair as alt
-import numpy as np
-import pandas as pd
 import streamlit as st
+import uuid
+import json
+import asyncio
+import websockets
 
-"""
-# Welcome to Streamlit!
-
-Edit `/streamlit_app.py` to customize this app to your heart's desire :heart:.
-If you have any questions, checkout our [documentation](https://docs.streamlit.io) and [community
-forums](https://discuss.streamlit.io).
-
-In the meantime, below is an example of what you can do with just a few lines of code:
-"""
-
-num_points = st.slider("Number of points in spiral", 1, 10000, 1100)
-num_turns = st.slider("Number of turns in spiral", 1, 300, 31)
-
-indices = np.linspace(0, 1, num_points)
-theta = 2 * np.pi * num_turns * indices
-radius = indices
-
-x = radius * np.cos(theta)
-y = radius * np.sin(theta)
-
-df = pd.DataFrame({
-    "x": x,
-    "y": y,
-    "idx": indices,
-    "rand": np.random.randn(num_points),
-})
-
-st.altair_chart(alt.Chart(df, height=700, width=700)
-    .mark_point(filled=True)
-    .encode(
-        x=alt.X("x", axis=None),
-        y=alt.Y("y", axis=None),
-        color=alt.Color("idx", legend=None, scale=alt.Scale()),
-        size=alt.Size("rand", legend=None, scale=alt.Scale(range=[1, 150])),
-    ))
+MIDDLEWARE_WS = "https://huggingface.co/spaces/PARTHA181098/middleware:7860/chat"
+
+st.set_page_config(page_title="Secure AI Chat")
+
+ss = st.session_state
+
+# ------------------ SESSION ------------------
+def new_session():
+    ss.session_id = str(uuid.uuid4())
+    ss.messages = []
+
+if "session_id" not in ss:
+    new_session()
+
+if "messages" not in ss:
+    ss.messages = []
+
+# ------------------ UI ------------------
+st.title("🔐 Secure Database Chatbot")
+
+if st.button("New Chat"):
+    new_session()
+    st.rerun()
+
+for msg in ss.messages:
+    with st.chat_message(msg["role"]):
+        st.write(msg["content"])
+
+user_input = st.chat_input("Ask something...")
+
+# ------------------ WS CLIENT ------------------
+async def send_and_receive(user_text):
+    async with websockets.connect(
+        f"{MIDDLEWARE_WS}?session_id={ss.session_id}"
+    ) as ws:
+
+        await ws.send(user_text)
+
+        assistant_msg = ""
+
+        while True:
+            data = await ws.recv()
+            payload = json.loads(data)
+
+            if payload["type"] == "security_warning":
+                st.warning(payload["message"])
+                return
+
+            if payload["type"] == "response":
+                assistant_msg += payload["content"]
+                yield assistant_msg
+
+            if payload["type"] == "complete":
+                break
+
+# ------------------ CHAT FLOW ------------------
+if user_input:
+    ss.messages.append({"role": "user", "content": user_input})
+    with st.chat_message("user"):
+        st.write(user_input)
+
+    with st.chat_message("assistant"):
+        placeholder = st.empty()
+        full_response = {"text": ""}
+
+        async def runner():
+            async for chunk in send_and_receive(user_input):
+                full_response["text"] = chunk
+                placeholder.markdown(full_response["text"])
+
+        asyncio.run(runner())
+
+    ss.messages.append({"role": "assistant", "content": full_response})