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.studio.runtime.domain.chat;
  
  import com.alibaba.cloud.ai.studio.runtime.utils.JsonUtils;
  import com.fasterxml.jackson.core.JsonParser;
  import com.fasterxml.jackson.core.type.TypeReference;
  import com.fasterxml.jackson.databind.DeserializationContext;
  import com.fasterxml.jackson.databind.JsonDeserializer;
  import com.fasterxml.jackson.databind.JsonNode;
  
  import java.io.IOException;
  import java.util.List;
  
  /**
   * Custom deserializer for chat message content. Handles different types of content:
   * arrays, text, and other JSON nodes.
   */
  public class ChatMessageContentDeserializer extends JsonDeserializer<Object> {
  
  	/**
  	 * Deserializes JSON content into appropriate object type.
  	 * @param p JSON parser
  	 * @param ctxt Deserialization context
  	 * @return Deserialized object (List MultimodalContent, String, or JsonNode)
  	 * @throws IOException if deserialization fails
  	 */
  	@Override
  	public Object deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
  		JsonNode node = p.getCodec().readTree(p);
  
  		if (node.isArray()) {
  			return JsonUtils.getObjectMapper().convertValue(node, new TypeReference<List<MultimodalContent>>() {
  			});
  		}
  		else if (node.isTextual()) {
  			return node.asText();
  		}
  		else {
  			return node;
  		}
  	}
  
  }
  