001/*
002 *  Copyright (c) 2023-2026, Agents-Flex (fuhai999@gmail.com).
003 *  <p>
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *  <p>
008 *  http://www.apache.org/licenses/LICENSE-2.0
009 *  <p>
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package com.agentsflex.core.message;
017
018import java.util.HashMap;
019
020public class SystemMessage extends AbstractTextMessage<SystemMessage> {
021
022    public SystemMessage() {
023    }
024
025    public SystemMessage(String content) {
026        this.content = content;
027    }
028
029    public static SystemMessage of(String content) {
030        return new SystemMessage(content);
031    }
032
033    @Override
034    public String toString() {
035        return "SystemMessage{" +
036            "content='" + content + '\'' +
037            ", metadataMap=" + metadataMap +
038            '}';
039    }
040
041    /**
042     * 创建并返回当前对象的副本。
043     *
044     * @return 一个新的、内容相同但内存独立的对象
045     */
046    @Override
047    public SystemMessage copy() {
048        SystemMessage copy = new SystemMessage();
049        copy.content = this.content;
050        if (this.metadataMap != null) {
051            copy.metadataMap = new HashMap<>(this.metadataMap);
052        }
053        return copy;
054    }
055}