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;
  
  import com.alibaba.cloud.ai.graph.OverAllState;
  import com.alibaba.cloud.ai.graph.state.AgentStateFactory;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutput;
  import java.io.ObjectOutputStream;
  import java.util.Map;
  import java.util.Objects;
  
  public abstract class StateSerializer implements Serializer<OverAllState> {
  
  	private final AgentStateFactory<OverAllState> stateFactory;
  
  	protected StateSerializer(AgentStateFactory<OverAllState> stateFactory) {
  		this.stateFactory = Objects.requireNonNull(stateFactory, "stateFactory cannot be null");
  	}
  
  	public final AgentStateFactory<OverAllState> stateFactory() {
  		return stateFactory;
  	}
  
  	public final OverAllState stateOf(Map<String, Object> data) {
  		Objects.requireNonNull(data, "data cannot be null");
  		return stateFactory.apply(data);
  	}
  
  	public final OverAllState cloneObject(Map<String, Object> data) throws IOException, ClassNotFoundException {
  		Objects.requireNonNull(data, "data cannot be null");
  		return cloneObject(stateFactory().apply(data));
  	}
  
  	@Override
  	public final void write(OverAllState object, ObjectOutput out) throws IOException {
  		writeData(object.data(), out);
  	}
  
  	@Override
  	public final OverAllState read(ObjectInput in) throws IOException, ClassNotFoundException {
  		return stateFactory().apply(readData(in));
  	}
  
  	public abstract void writeData(Map<String, Object> data, ObjectOutput out) throws IOException;
  
  	public abstract Map<String, Object> readData(ObjectInput in) throws IOException, ClassNotFoundException;
  
  	public final byte[] dataToBytes(Map<String, Object> data) throws IOException {
  		Objects.requireNonNull(data, "object cannot be null");
  		try (ByteArrayOutputStream stream = new ByteArrayOutputStream()) {
  			ObjectOutputStream oas = new ObjectOutputStream(stream);
  			writeData(data, oas);
  			oas.flush();
  			return stream.toByteArray();
  		}
  	}
  
  	public final Map<String, Object> dataFromBytes(byte[] bytes) throws IOException, ClassNotFoundException {
  		Objects.requireNonNull(bytes, "bytes cannot be null");
  		if (bytes.length == 0) {
  			throw new IllegalArgumentException("bytes cannot be empty");
  		}
  		try (ByteArrayInputStream stream = new ByteArrayInputStream(bytes)) {
  			ObjectInputStream ois = new ObjectInputStream(stream);
  			return readData(ois);
  		}
  	}
  
  }
  