content: /*
   * Copyright 2024-2025 the original author or authors.
   *
   * 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
   *
   *      https://www.apache.org/licenses/LICENSE-2.0
   *
   * 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.alibaba.cloud.ai.graph.serializer.std;
  
  import com.alibaba.cloud.ai.graph.serializer.Serializer;
  
  import org.springframework.ai.chat.messages.AssistantMessage;
  import org.springframework.ai.chat.messages.Message;
  import org.springframework.ai.chat.messages.MessageType;
  import org.springframework.ai.chat.messages.SystemMessage;
  import org.springframework.ai.chat.messages.ToolResponseMessage;
  import org.springframework.ai.chat.messages.UserMessage;
  
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectOutput;
  
  public class MessageSerializer implements Serializer<Message> {
  
  	final UserMessageSerializer user = new UserMessageSerializer();
  
  	final AssistantMessageSerializer assistant = new AssistantMessageSerializer();
  
  	final SystemMessageSerializer system = new SystemMessageSerializer();
  
  	final ToolResponseMessageSerializer tool = new ToolResponseMessageSerializer();
  
  	@Override
  	public void write(Message object, ObjectOutput out) throws IOException {
  		out.writeObject(object.getMessageType());
  
  		switch (object.getMessageType()) {
  			case USER -> user.write((UserMessage) object, out);
  			case ASSISTANT -> assistant.write((AssistantMessage) object, out);
  			case SYSTEM -> system.write((SystemMessage) object, out);
  			case TOOL -> tool.write((ToolResponseMessage) object, out);
  			default -> throw new IllegalArgumentException("Unsupported message type: " + object.getMessageType());
  		}
  	}
  
  	@Override
  	public Message read(ObjectInput in) throws IOException, ClassNotFoundException {
  
  		MessageType type = (MessageType) in.readObject();
  
  		return switch (type) {
  			case ASSISTANT -> assistant.read(in);
  			case USER -> user.read(in);
  			case SYSTEM -> system.read(in);
  			case TOOL -> tool.read(in);
  		};
  	}
  
  }
  