Merge pull request #1 from ananya26102006/ananya26102006-patch-1

Add Streamlit auth and welcome page for Jarvis

Author: ananya26102006

python.py

@@ -0,0 +1,186 @@
+"""
+Filename: jarvis_auth.py
+Title: Jarvis — Streamlit Auth & Welcome Page
+Description:
+  Single-file Streamlit page for Jarvis that displays a personalized welcome,
+  Google-based authentication buttons, user profile (picture, name, email),
+  and handles login/logout flow. Uses IST time helper for timestamp formatting
+  and safe UI flows. Place this file in your Streamlit app (e.g., at the app root
+  or in the `pages/` folder) and run with `streamlit run jarvis_auth.py`.
+"""
+
+from datetime import datetime
+from time import sleep
+
+import pytz
+import streamlit as st
+
+# Replace these imports with your project's actual utility functions.
+# If you don't have src/utils/greeting.py, either create it or inline equivalent functions.
+try:
+    from src.utils.greeting import GetRandomWelcomeMessage, GreetUser
+except Exception:
+    # Fallback implementations if src.utils.greeting is not available.
+    import random
+
+    def GetRandomWelcomeMessage():
+        msgs = [
+            "Ready when you are — how can I help?",
+            "Good to see you! What would you like to do today?",
+            "Nice! I'm standing by for your command.",
+            "Welcome back — let's be productive!",
+        ]
+        return random.choice(msgs)
+
+    def GreetUser(name: str) -> str:
+        if not name:
+            return "Hello"
+        # simple greeting based on hour
+        try:
+            hour = datetime.now().hour
+            if hour < 12:
+                prefix = "Good morning"
+            elif hour < 18:
+                prefix = "Good afternoon"
+            else:
+                prefix = "Good evening"
+            return f"{prefix}, {name}"
+        except Exception:
+            return f"Hello, {name or 'there'}"
+
+
+def unix_to_ist(timestamp: float) -> str:
+    """
+    Convert a UNIX timestamp (seconds) to a human-readable IST time string.
+
+    Args:
+      timestamp: seconds since epoch (float or int).
+
+    Returns:
+      Formatted string like "07:34:21 PM IST".
+    """
+    india_tz = pytz.timezone("Asia/Kolkata")
+    format_str = "%I:%M:%S %p IST"
+    # Ensure timestamp is numeric
+    try:
+        return datetime.fromtimestamp(float(timestamp), pytz.utc).astimezone(india_tz).strftime(format_str)
+    except Exception:
+        return "--:--:-- IST"
+
+
+def auth():
+    """
+    Streamlit UI for authentication + profile display.
+
+    Note: This relies on Streamlit's built-in `st.login()` / `st.logout()` behavior
+    which may be provided by a community auth component or a Streamlit Enterprise feature.
+    If your environment doesn't support `st.user`, replace the checks with your app's auth flow.
+    """
+    # Defensive check: some Streamlit environments won't have st.user
+    st.set_page_config(page_title="Jarvis — Welcome", layout="centered")
+
+    # Title block
+    st.markdown("## ⚡ Jarvis — Virtual AI Assistant")
+    st.write(
+        "Jarvis simplifies your daily tasks using natural language automation, "
+        "device control and personalized interactions. Sign in to access your profile."
+    )
+    st.write("---")
+
+    # If the environment has st.user object (Streamlit Cloud / Enterprise), use it.
+    use_st_user = hasattr(st, "user")
+
+    if use_st_user:
+        try:
+            user_obj = st.user
+        except Exception:
+            user_obj = None
+    else:
+        user_obj = None
+
+    # If no st.user support, show a fallback sign-in button and explanatory text
+    if not user_obj:
+        # Fallback minimal UX
+        st.warning(
+            "This environment doesn't expose `st.user`. Use your app's auth or run on Streamlit Cloud/Enterprise "
+            "to enable Google authentication features."
+        )
+        cols = st.columns([1, 1])
+        with cols[0]:
+            if st.button("🔓 Simulate Sign In (Demo)"):
+                # In demo mode, create a lightweight fake user in session state
+                st.session_state["_demo_user"] = {
+                    "name": "Demo User",
+                    "given_name": "Demo",
+                    "email": "[email protected]",
+                    "picture": "https://avatars.dicebear.com/api/identicon/demo.svg",
+                    "is_logged_in": True,
+                }
+                st.experimental_rerun()
+        with cols[1]:
+            if st.button("❌ Clear Demo User"):
+                st.session_state.pop("_demo_user", None)
+                st.experimental_rerun()
+
+        # If demo user exists, show profile using that
+        demo = st.session_state.get("_demo_user")
+        if demo and demo.get("is_logged_in"):
+            st.success(GetRandomWelcomeMessage(), icon="🤝")
+            st.image(demo.get("picture"), caption=demo.get("name"))
+            st.write("Email:", demo.get("email"))
+            if st.button("Log out (demo)"):
+                st.toast(f"Goodbye, {demo.get('name')}! See you soon!", icon="🚪")
+                sleep(1.5)
+                st.session_state.pop("_demo_user", None)
+                st.experimental_rerun()
+        return
+
+    # If we have st.user available from the environment:
+    try:
+        # st.user typically has fields: is_logged_in, name, given_name, email, picture
+        if hasattr(st.user, "is_logged_in") and not st.user.is_logged_in:
+            st.title("🔐 Login Required")
+            st.write("Please authenticate using your Google account to access your Jarvis profile.")
+            if st.button("🔓 Authenticate with Google"):
+                # st.login may be provided by Streamlit Enterprise / Cloud
+                try:
+                    st.login("google")
+                except Exception:
+                    st.error("Login is not available in this environment.")
+        else:
+            # Display user profile
+            given_name = getattr(st.user, "given_name", None) or getattr(st.user, "name", "there")
+            st.title(f"🙏 {GreetUser(given_name)}")
+            st.success(GetRandomWelcomeMessage(), icon="🤝")
+
+            # Profile picture
+            picture = getattr(st.user, "picture", None)
+            if picture:
+                st.image(picture, caption=getattr(st.user, "name", ""), width=160)
+            else:
+                st.info("No profile picture available.")
+
+            st.write("Email:", getattr(st.user, "email", "Not provided"))
+
+            # Example: show last login time if available
+            last_login_ts = getattr(st.user, "last_login", None)
+            if last_login_ts:
+                try:
+                    readable = unix_to_ist(last_login_ts)
+                    st.write("Last login (IST):", readable)
+                except Exception:
+                    pass
+
+            if st.button("Log out"):
+                st.toast(f"Goodbye, {getattr(st.user, 'name', 'User')}! See you soon!", icon="🚪")
+                sleep(1.2)
+                try:
+                    st.logout()
+                except Exception:
+                    st.info("Logout hook not available in this environment.")
+    except Exception as e:
+        st.error(f"An error occurred while accessing user data: {e}")
+
+
+if __name__ == "__main__":
+    auth()