/*
 * Copyright 2024-2026 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 org.springframework.ai.chat.messages.AssistantMessage;
import org.springframework.ai.zhipuai.ZhiPuAiAssistantMessage;

import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.List;
import java.util.Map;

class ZhiPuAIAssistantMessageSerializer implements NullableObjectSerializer<ZhiPuAiAssistantMessage> {

	public ZhiPuAIAssistantMessageSerializer() {
	}

	@Override
	public void write(ZhiPuAiAssistantMessage object, ObjectOutput out) throws IOException {
		String text = object.getText();
		writeNullableUTF(text, out);

		Map<String, Object> metadata = object.getMetadata();
		out.writeObject(metadata);

		List<AssistantMessage.ToolCall> toolCalls = object.getToolCalls();
		writeNullableObject(toolCalls, out);

		String reasoningContent = object.getReasoningContent();
		writeNullableUTF(reasoningContent, out);
		// out.writeObject(object.getMedia());
	}

	@Override
	@SuppressWarnings("unchecked")
	public ZhiPuAiAssistantMessage read(ObjectInput in) throws IOException, ClassNotFoundException {
		var text = readNullableUTF(in).orElse(null);
		var metadata = (Map<String, Object>) in.readObject();
		var toolCalls = (List<AssistantMessage.ToolCall>) readNullableObject(in).orElseGet(List::of);
		var reasoningContent = readNullableUTF(in).orElse(null);

		return new ZhiPuAiAssistantMessage.Builder()
				.content(text)
				.reasoningContent(reasoningContent)
				.properties(metadata)
				.toolCalls(toolCalls)
				.build();
	}

}
