Create app.py

app.py

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+import streamlit as st
+import time
+import random
+import json
+from datetime import datetime
+import pytz
+import platform
+import uuid
+import extra_streamlit_components as stx
+
+# Set page config
+st.set_page_config(page_title="Personalized Real-Time Chat", page_icon="💬", layout="wide")
+
+# Initialize cookie manager
+cookie_manager = stx.CookieManager()
+
+# File to store chat history and user data
+CHAT_FILE = "chat_history.txt"
+
+# Function to save chat history and user data to file
+def save_data():
+    with open(CHAT_FILE, 'w') as f:
+        json.dump({
+            'messages': st.session_state.messages,
+            'users': st.session_state.users
+        }, f)
+
+# Function to load chat history and user data from file
+def load_data():
+    try:
+        with open(CHAT_FILE, 'r') as f:
+            data = json.load(f)
+            st.session_state.messages = data['messages']
+            st.session_state.users = data['users']
+    except FileNotFoundError:
+        st.session_state.messages = []
+        st.session_state.users = []
+
+# Load data at the start
+load_data()
+
+# Function to get or create user
+def get_or_create_user():
+    user_id = cookie_manager.get(cookie='user_id')
+    if not user_id:
+        user_id = str(uuid.uuid4())
+        cookie_manager.set('user_id', user_id)
+    
+    user = next((u for u in st.session_state.users if u['id'] == user_id), None)
+    if not user:
+        user = {
+            'id': user_id,
+            'name': random.choice(['Alice', 'Bob', 'Charlie', 'David', 'Eve', 'Frank', 'Grace', 'Henry']),
+            'browser': f"{platform.system()} - {st.session_state.get('browser_info', 'Unknown')}"
+        }
+        st.session_state.users.append(user)
+        save_data()
+    
+    return user
+
+# Initialize session state
+if 'messages' not in st.session_state:
+    st.session_state.messages = []
+if 'users' not in st.session_state:
+    st.session_state.users = []
+if 'current_user' not in st.session_state:
+    st.session_state.current_user = get_or_create_user()
+
+# Sidebar for user information and settings
+with st.sidebar:
+    st.title("User Info")
+    st.write(f"Current User: {st.session_state.current_user['name']}")
+    st.write(f"Browser: {st.session_state.current_user['browser']}")
+    
+    new_name = st.text_input("Change your name:")
+    if st.button("Update Name"):
+        if new_name:
+            for user in st.session_state.users:
+                if user['id'] == st.session_state.current_user['id']:
+                    user['name'] = new_name
+                    st.session_state.current_user['name'] = new_name
+                    save_data()
+                    st.success(f"Name updated to {new_name}")
+                    break
+
+    st.title("Active Users")
+    for user in st.session_state.users:
+        st.write(f"{user['name']} ({user['browser']})")
+
+# Main chat area
+st.title("Personalized Real-Time Chat")
+
+# Display chat messages
+chat_container = st.container()
+
+# Input for new message
+new_message = st.text_input("Type your message:")
+if st.button("Send"):
+    if new_message:
+        timestamp = datetime.now(pytz.utc).strftime('%Y-%m-%d %H:%M:%S %Z')
+        st.session_state.messages.append({
+            'user': st.session_state.current_user['name'],
+            'message': new_message,
+            'timestamp': timestamp
+        })
+        save_data()
+        st.experimental_rerun()
+
+# Function to display chat messages
+def display_messages():
+    for msg in st.session_state.messages:
+        with chat_container.container():
+            st.write(f"**{msg['user']}** ({msg['timestamp']}): {msg['message']}")
+
+# Display messages
+display_messages()
+
+# Polling for updates
+if st.button("Refresh Chat"):
+    load_data()
+    st.experimental_rerun()
+
+# Auto-refresh (note: this will refresh the entire app)
+time.sleep(5)
+st.experimental_rerun()