Update app.py

app.py

@@ -42,6 +42,9 @@ def chat_with_model(message, history, context):
     if not isinstance(history, list):
         history = []
 
+    if not message:
+        return history, history  # Prevent empty messages from causing issues
+
     # 🌍 Web search mode
     if message.lower().startswith("search "):
         query = message[7:]
@@ -50,13 +53,13 @@ def chat_with_model(message, history, context):
         save_memory(history)
         return history, history
 
-    # 🧠 Build conversation
+    # 🧠 System context
     conversation = [{"role": "system", "content": (
-    "You are EduAI — an educational AI assistant created by Wafa Fazly "
-    "from Fathima Muslim Ladies College. "
-    "You help students learn subjects such as Math, Science, English, and IT. "
-    "EduAI runs on the model 'Qwen/Qwen3-VL-8B-Instruct', which was originally "
-    "trained by Alibaba. Always answer truthfully when asked about your creation."
+        "You are EduAI — an educational AI assistant created by Wafa Fazly "
+        "from Fathima Muslim Ladies College. "
+        "You help students learn subjects such as Math, Science, English, and IT. "
+        "EduAI runs on the model 'Qwen/Qwen3-VL-8B-Instruct', which was originally "
+        "trained by Alibaba. Always answer truthfully when asked about your creation."
     )}]
 
     for past_user, past_bot in history[-5:]:
@@ -82,22 +85,15 @@ def chat_with_model(message, history, context):
         data = response.json()
         reply = data["choices"][0]["message"]["content"]
 
-        # 🧮 Clean up math formatting
         reply = reply.replace("Step", "\n\n**Step")
         reply = reply.replace(":", ":**")
-        reply = reply.replace("\\[", "\n\n\\[")
-        reply = reply.replace("\\]", "\\]\n\n")
-
-        if "\\" in reply or "log_" in reply or "^" in reply:
-            reply = f"{reply}"
 
         history.append((message, reply))
         save_memory(history)
         return history, history
 
     except Exception as e:
-        print("Error:", e)
-        history.append((message, "😅 EduAI is having trouble connecting right now. Please try again later!"))
+        history.append((message, f"😅 EduAI connection error: {e}"))
         return history, history
 
 # 📘 Sidebar context update
@@ -119,8 +115,9 @@ def handle_file(file):
     return [(f"📁 File uploaded: {file.name}", "✅ Received successfully!")]
 
 # ⏸ Pause Button
-def pause_chat():
-    return [(None, "⏸️ Chat paused. Click 'Send' to continue.")]
+def pause_chat(history):
+    history.append(("⏸", "⏸️ Chat paused. Click 'Send' to continue."))
+    return history
 
 # 🎨 Gradio Interface (UI Improved)
 with gr.Blocks(theme=gr.themes.Soft(primary_hue="violet")) as iface:
@@ -174,11 +171,7 @@ with gr.Blocks(theme=gr.themes.Soft(primary_hue="violet")) as iface:
                 label="💬 EduAI Chat Window",
                 height=450,
                 render_markdown=True,
-                bubble_full_width=False,
-                latex_delimiters=[
-                    {"left": "$$", "right": "$$", "display": True},
-                    {"left": "\\[", "right": "\\]", "display": True}
-                ]
+                bubble_full_width=False
             )
 
             # 💭 --- Chat Input Section with Icons ---
@@ -198,7 +191,7 @@ with gr.Blocks(theme=gr.themes.Soft(primary_hue="violet")) as iface:
     lang.change(update_context, inputs=lang, outputs=context_display)
     send.click(chat_with_model, inputs=[msg, chatbot, context_display], outputs=[chatbot, chatbot])
     upload_file.upload(handle_file, inputs=upload_file, outputs=chatbot)
-    pause_btn.click(pause_chat, outputs=chatbot)
+    pause_btn.click(pause_chat, inputs=chatbot, outputs=chatbot)
     clear_btn.click(clear_memory, outputs=[chatbot, context_display])
 
 iface.launch()