fix

app.py

@@ -172,17 +172,38 @@ async def summarize_chat(end_of_chat_response: bool, messages: dict, sidebar_sum
     )
     if should_return:
         return gr.skip(), gr.skip()
+
+    filtered_messages = []
+    for msg in messages:
+        if isinstance(msg, dict) and msg.get("content") and msg["content"].strip():
+            filtered_messages.append(msg)
+    
+    # If we don't have any valid messages after filtering, provide a default summary
+    if not filtered_messages:
+        if uuid not in sidebar_summaries:
+            sidebar_summaries[uuid] = "Chat History"
+        return sidebar_summaries, False
+
+
     config = RunnableConfig(
         run_name="summarize_chat",
         configurable={"thread_id": uuid}
     )
-    weak_model_with_config = weak_model.with_config(config)
-    summary_response = await weak_model_with_config.ainvoke([
-        ("system", "summarize this chat in 7 tokens or less. Refrain from using periods"),
-        *messages,
-    ])
-    if uuid not in sidebar_summaries:
-        sidebar_summaries[uuid] = summary_response.content
+    try:
+        weak_model_with_config = weak_model.with_config(config)
+        summary_response = await weak_model_with_config.ainvoke([
+            ("system", "summarize this chat in 7 tokens or less. Refrain from using periods"),
+            *filtered_messages,
+        ])
+        
+        if uuid not in sidebar_summaries:
+            sidebar_summaries[uuid] = summary_response.content
+    except Exception as e:
+        logger.error(f"Error summarizing chat: {e}")
+        # Provide a fallback summary if an error occurs
+        if uuid not in sidebar_summaries:
+            sidebar_summaries[uuid] = "Previous Chat"
+    
     return sidebar_summaries, False
 
 async def new_tab(uuid, gradio_graph, messages, tabs, prompt, sidebar_summaries):
@@ -257,6 +278,10 @@ footer {visibility: hidden}
     padding-left: 0;
     padding-right: 0;
 }
+
+.sidebar-collapsed {
+    display: none !important;
+}
 """
 
 # We set the ChatInterface textbox id to chat-textbox for this to work
@@ -283,6 +308,36 @@ function triggerChatButtonClick() {
   button.click();
 }"""
 
+
+SIDEBAR_VISIBILITY_JS = """
+document.addEventListener('DOMContentLoaded', function() {
+    // Wait for Gradio to fully load
+    setTimeout(function() {
+        const sidebarToggle = document.querySelector('.sidebar button');
+        const sidebar = document.querySelector('.sidebar');
+        
+        if (sidebarToggle && sidebar) {
+            // Initial check
+            if (sidebar.classList.contains('!-left-64')) {
+                sidebar.classList.add('sidebar-collapsed');
+            }
+            
+            // Add click listener to toggle button
+            sidebarToggle.addEventListener('click', function() {
+                // Use setTimeout to wait for Gradio's class changes to apply
+                setTimeout(function() {
+                    if (sidebar.classList.contains('!-left-64')) {
+                        sidebar.classList.add('sidebar-collapsed');
+                    } else {
+                        sidebar.classList.remove('sidebar-collapsed');
+                    }
+                }, 50);
+            });
+        }
+    }, 1000);
+});
+"""
+
 if __name__ == "__main__":
     logger.info("Starting the interface")
     with gr.Blocks(title="Langgraph Template", fill_height=True, css=CSS) as app:
@@ -510,6 +565,7 @@ if __name__ == "__main__":
         def click_followup_button(btn):
             buttons = [gr.Button(visible=False) for _ in range(len(followup_question_buttons))]
             return btn, *buttons
+
         for btn in followup_question_buttons:
             btn.click(
                 fn=click_followup_button,
@@ -562,4 +618,6 @@ if __name__ == "__main__":
         def load_prompt(current_prompt):
             return current_prompt
 
+
+    app.js = SIDEBAR_VISIBILITY_JS
     app.launch(server_name="0.0.0.0", server_port=7860, share=True)