Update app.py

app.py

@@ -231,9 +231,16 @@ def submit():
         user_query = st.session_state.query_input
         st.session_state.chat_history.append(("user", user_query))
 
+        # Prevent duplicate runs by checking if a query is already being processed
+        if 'processing_query' in st.session_state and st.session_state.processing_query:
+            return
+
+        # Mark that a query is being processed
+        st.session_state.processing_query = True
+
         # Add loading message as an assistant's response
         st.session_state.chat_history.append(("assistant", {"answer": "🔍 กำลังค้นหาคำตอบ...", "documents": [], "query_info": {}}))
-        st.rerun()  # Force UI update
+        st.rerun()  # Trigger UI update for spinner
 
         try:
             # Process query
@@ -250,9 +257,11 @@ def submit():
             # Replace spinner with error message
             st.session_state.chat_history[-1] = ("assistant", {"answer": f"❌ เกิดข้อผิดพลาด: {str(e)}", "documents": [], "query_info": {}})
 
-        # Reset input
+        # Reset input and allow new queries
         st.session_state.query_input = ""
+        st.session_state.processing_query = False
         st.rerun()
+
      
 def main():
     # Page config