Update app.py

app.py

@@ -225,23 +225,19 @@ if 'context_memory' not in st.session_state:
     st.session_state.context_memory = []
 
 def submit():
-    if st.session_state.get("processing_query", False):
-        return
-
-    st.session_state.processing_query = True  # ป้องกันการเรียกซ้ำ
-    
     if not st.session_state.query_input:
         st.warning("⚠️ กรุณาระบุคำถาม")
-        st.session_state.processing_query = False
         return
 
-    user_query = st.session_state.query_input.strip()
-    st.session_state.query_input = ""
+    user_query = st.session_state.query_input.strip()  # Strip unnecessary spaces
+    st.session_state.query_input = ""  # Clear input
 
+    # Prevent duplicate user query from being added twice
     if not st.session_state.chat_history or st.session_state.chat_history[-1][1] != user_query:
         st.session_state.chat_history.append(("user", user_query))
 
-    if len(st.session_state.context_memory) > 5:
+    # Maintain a rolling context of past interactions
+    if len(st.session_state.context_memory) > 5:  # Limit to last 5 Q&A pairs
         st.session_state.context_memory.pop(0)
 
     try:
@@ -250,6 +246,7 @@ def submit():
         ) + f"\nQ: {user_query}"
 
         result = st.session_state.pipeline.process_query(query_with_context)
+
         assistant_answer = result["answer"]
 
         st.session_state.chat_history.append(("assistant", assistant_answer))
@@ -262,7 +259,7 @@ def submit():
         st.error(f"Query processing error: {e}")
 
     finally:
-        st.session_state.processing_query = False  # รีเซ็ต flag
+        st.session_state.processing_query = False  # Reset flag
 
 def main():
     # Page config