Update app.py

app.py

@@ -53,6 +53,21 @@ st.markdown("""
     background: #4caf50;
     transition: width 0.5s ease-in-out;
 }
+.alert {
+    position: relative;
+    padding: 20px;
+    margin-bottom: 20px;
+    border-radius: 8px;
+    border: 1px solid #4caf50;
+    background-color: #dff0d8;
+}
+.alert .close {
+    position: absolute;
+    top: 10px;
+    right: 10px;
+    cursor: pointer;
+    font-size: 1.5em;
+}
 </style>
 """, unsafe_allow_html=True)
 
@@ -85,6 +100,9 @@ def display_progress_bar():
     if st.session_state.learning_path:
         path = st.session_state.learning_path
         total_modules = len(path.modules)
+        if total_modules == 0:
+            st.warning("No modules available in the course.")
+            return
         current = st.session_state.current_module + 1
         progress = (current / total_modules) * 100
         
@@ -186,8 +204,12 @@ def create_new_course():
                     
                     path = asyncio.run(create_course())
                     st.session_state.learning_path = path
-                    st.success("🎉 Your course is ready! Modules are being generated.")
-                    st.rerun()
+                    st.markdown("""
+                    <div class="alert">
+                        🎉 Your course is ready! Modules are being generated.
+                        <span class="close" onclick="this.parentElement.style.display='none';">&times;</span>
+                    </div>
+                    """, unsafe_allow_html=True)
                 except Exception as e:
                     st.error(f"Error: {str(e)}")
 
@@ -213,6 +235,9 @@ def main():
 def display_current_course():
     """Display current course content"""
     path = st.session_state.learning_path
+    if not path or len(path.modules) == 0:
+        st.warning("No modules are available yet. Please wait for the course generation to complete.")
+        return
     display_learning_roadmap()
     display_progress_bar()