content: /*
   *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
   *  <p>
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *  <p>
   *  http://www.apache.org/licenses/LICENSE-2.0
   *  <p>
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   */
  package com.agentsflex.core.util;
  
  import com.agentsflex.core.message.HumanMessage;
  import com.agentsflex.core.message.Message;
  
  import java.util.List;
  
  public class MessageUtil {
  
      public static HumanMessage findLastHumanMessage(List<Message> messages) {
          if (messages == null || messages.isEmpty()) {
              return null;
          }
          for (int i = messages.size() - 1; i >= 0; i--) {
              Message message = messages.get(i);
              if (message instanceof HumanMessage) {
                  return (HumanMessage) message;
              }
          }
          return null;
      }
  
      public static String getToolChoice(Message message) {
          if (message instanceof HumanMessage) {
              return ((HumanMessage) message).getToolChoice();
          }
          return null;
      }
  }
  