Update app.py

app.py

@@ -214,10 +214,23 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
             history_btn.click(toggle_history, inputs=[], outputs=history_output)
 
         def handle_csv_upload(file):
-            global engine, db
-            engine = load_uploaded_csv_and_create_db(file)
-            if engine is not None:
-                db = SQLDatabase(engine=engine)
+            global engine, db, sql_agent
+
+            try:
+                engine = load_uploaded_csv_and_create_db(file)
+                if engine is not None:
+                    db = SQLDatabase(engine=engine)
+                    sql_agent = create_sql_agent(
+                        ChatOpenAI(model="gpt-4o-mini", temperature=0),
+                        db=db,
+                        agent_type="openai-tools",
+                        verbose=True,
+                        max_iterations=40,
+                        return_intermediate_steps=True
+                    )
+                    print("[UPLOAD] Banco e agente SQL atualizados com sucesso.")
+            except Exception as e:
+                print(f"[ERRO] Falha ao processar novo CSV: {e}")
     
         csv_file.change(handle_csv_upload, inputs=csv_file, outputs=csv_file)