content: /*
   *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
   *  <p>
   *  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
   *  <p>
   *  http://www.apache.org/licenses/LICENSE-2.0
   *  <p>
   *  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.agentsflex.llm.openai;
  
  import com.agentsflex.core.document.Document;
  import com.agentsflex.core.llm.ChatOptions;
  import com.agentsflex.core.llm.embedding.EmbeddingOptions;
  import com.agentsflex.core.message.HumanMessage;
  import com.agentsflex.core.message.Message;
  import com.agentsflex.core.parser.AiMessageParser;
  import com.agentsflex.core.parser.impl.DefaultAiMessageParser;
  import com.agentsflex.core.prompt.DefaultPromptFormat;
  import com.agentsflex.core.prompt.Prompt;
  import com.agentsflex.core.prompt.PromptFormat;
  import com.agentsflex.core.util.Maps;
  import com.agentsflex.core.util.MessageUtil;
  
  import java.util.List;
  import java.util.Optional;
  
  public class OpenAILlmUtil {
  
      private static final PromptFormat promptFormat = new DefaultPromptFormat();
  
      public static AiMessageParser getAiMessageParser(boolean isStream) {
          return DefaultAiMessageParser.getChatGPTMessageParser(isStream);
      }
  
  
      public static String promptToEmbeddingsPayload(Document text, EmbeddingOptions options, OpenAILlmConfig config) {
          // https://platform.openai.com/docs/api-reference/making-requests
          return Maps.of("model", options.getModelOrDefault(config.getDefaultEmbeddingModel()))
              .set("encoding_format", "float")
              .set("input", text.getContent())
              .toJSON();
      }
  
  
      public static String promptToPayload(Prompt prompt, OpenAILlmConfig config, ChatOptions options, boolean withStream) {
          List<Message> messages = prompt.toMessages();
          HumanMessage message = MessageUtil.findLastHumanMessage(messages);
          return Maps
              .of("model", Optional.ofNullable(options.getModel()).orElse(config.getModel()))
              .set("messages", promptFormat.toMessagesJsonObject(messages))
              .setIf(withStream, "stream", true)
              .setIfNotEmpty("tools", promptFormat.toFunctionsJsonObject(message))
              .setIfContainsKey("tools", "tool_choice", MessageUtil.getToolChoice(message))
              .setIfNotNull("top_p", options.getTopP())
              .setIfNotEmpty("stop", options.getStop())
              .setIf(map -> !map.containsKey("tools") && options.getTemperature() > 0, "temperature", options.getTemperature())
              .setIf(map -> !map.containsKey("tools") && options.getMaxTokens() != null, "max_tokens", options.getMaxTokens())
              .setIfNotEmpty(options.getExtra())
              .toJSON();
      }
  
  
  }
  