Update app.py

app.py

@@ -1,7 +1,42 @@
 import streamlit as st
+import os
 
-st.title("Simple Hi App")
+# Load credentials from Hugging Face Secrets
+USERNAME = os.environ.get("LOGIN_USERNAME")
+PASSWORD = os.environ.get("LOGIN_PASSWORD")
 
-user_text = st.text_input("Enter some text:")
+# Initialize session state for login status
+if "logged_in" not in st.session_state:
+    st.session_state.logged_in = False
 
-st.write("hi")
+# Login form
+def login_form():
+    with st.form("Login"):
+        username = st.text_input("Username")
+        password = st.text_input("Password", type="password")
+        submit_button = st.form_submit_button("Login")
+        
+        if submit_button:
+            if username == USERNAME and password == PASSWORD:
+                st.session_state.logged_in = True
+                st.success("Logged in successfully!")
+            else:
+                st.error("Invalid username or password")
+
+# Logout button
+def logout():
+    st.session_state.logged_in = False
+    st.info("Logged out successfully!")
+
+# Main app logic
+def main_app():
+    st.title("Welcome to the App!")
+    st.write("You are logged in. Here is your protected content.")
+    if st.button("Logout"):
+        logout()
+
+# Render the app based on login status
+if st.session_state.logged_in:
+    main_app()
+else:
+    login_form()