Update app.py

app.py

@@ -19,7 +19,8 @@ if api_key:
 # Function to handle chat
 def chat_with_deepseek(message, history):
     if not client:
-        return "❌ HF_TOKEN not found. Please set it in 'Settings → Repository secrets' of your Space."
+        history.append((message, "❌ HF_TOKEN not found. Please set it in 'Settings → Repository secrets'."))
+        return history
 
     try:
         # Convert Gradio history to OpenAI messages format
@@ -35,9 +36,11 @@ def chat_with_deepseek(message, history):
         )
 
         reply = completion.choices[0].message.content
-        return reply
+        history.append((message, reply))  # ✅ return updated history
+        return history
     except Exception as e:
-        return f"⚠️ Error: {str(e)}"
+        history.append((message, f"⚠️ Error: {str(e)}"))
+        return history
 
 # Gradio Chat UI
 with gr.Blocks(theme="soft", css="""
@@ -85,8 +88,9 @@ with gr.Blocks(theme="soft", css="""
         elem_id="inputbox"
     )
     submit_btn = gr.Button("Send", elem_id="submitbtn")
+    clear_btn = gr.Button("🗑️ Clear Chat")
 
-    # Bind events
+    # Event: Send message
     submit_btn.click(
         fn=chat_with_deepseek,
         inputs=[user_input, chatbot],
@@ -98,4 +102,8 @@ with gr.Blocks(theme="soft", css="""
         outputs=chatbot
     )
 
+    # Event: Clear history
+    clear_btn.click(lambda: [], None, chatbot, queue=False)
+
 demo.launch()
+