Update src/streamlit_app.py

src/streamlit_app.py

@@ -18,6 +18,122 @@ from sklearn.feature_extraction.text import TfidfVectorizer
 from sklearn.decomposition import LatentDirichletAllocation
 from gliner import GLiNER
 from streamlit_extras.stylable_container import stylable_container
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+import time # Optional: for simulating database processing
+
+st.set_page_config(
+    page_title="Premium Dashboard",
+    layout="centered",
+    initial_sidebar_state="collapsed",
+)
+
+# --- Email Retrieval Logic (CRITICAL) ---
+# This is where the app reads the 'user_email' parameter from the URL
+query_params = st.query_params
+user_email = query_params.get("user_email")
+
+# ----------------------------------------
+# --- Main Application Logic ---
+# ----------------------------------------
+
+st.title("Premium Subscriber Dashboard")
+st.markdown("---")
+
+if user_email:
+    # 🌟 STEP 1: Confirmation and Display
+    st.balloons()
+    st.success(f"Payment Confirmed! Welcome to Premium, **{user_email}**! You now have full access. ")
+    
+    st.header("Granting Access...")
+    
+    # 🌟 STEP 2: CRITICAL BACKEND PROCESSING
+    # This is where your code would connect to your database (like Firestore)
+    # and update the user's status to 'Premium'.
+    
+    with st.spinner(f"Processing subscription for {user_email}..."):
+        # --- SIMULATED DATABASE LOGIC START ---
+        time.sleep(2) # Simulate network delay/database write
+        # In a real app, you would:
+        # 1. Connect to Firestore.
+        # 2. Query your users collection to find the user with this email.
+        # 3. Update their document: { subscription_status: "active", start_date: current_date }
+        # --- SIMULATED DATABASE LOGIC END ---
+        
+    st.info(f"✅ Your premium access is now permanently linked to **{user_email}**.")
+    
+    # 🌟 STEP 3: Display Premium Features
+    st.markdown("""
+    ## 🔑 Your Exclusive Premium Features
+    """)
+    col1, col2 = st.columns(2)
+    with col1:
+        st.metric(label="Subscription Status", value="Active (Annual)")
+    with col2:
+        st.metric(label="Access Tier", value="Unlimited")
+        
+    st.button("Access Advanced Reports & Tools", type="primary")
+    st.markdown("---")
+    st.write("Enjoy your enhanced experience!")
+    
+else:
+    # ⚠️ Case where the user arrives without the 'user_email' parameter
+    st.error("Access Denied or Subscription Details Missing.")
+    st.markdown("""
+    It looks like you arrived here without a confirmation link. If you have already paid:
+    
+    1.  Please check the email address you used for payment.
+    2.  Contact support with your PayPal transaction ID for manual activation.
+    
+    If you have not paid, please return to the free app to upgrade.
+    """)
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 # --- Comet ML Imports (Optional/Placeholder) ---
 try: