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agents-flex-core/src/main/java/com/agentsflex/core/util/MessageUtil.java

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+/*
+ *  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;
+    }
+}