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.stream;
  
  import com.alibaba.cloud.ai.dashscope.chat.DashScopeChatModel;
  import com.alibaba.cloud.ai.graph.OverAllState;
  import com.alibaba.cloud.ai.graph.action.NodeAction;
  
  import org.springframework.ai.chat.messages.UserMessage;
  import org.springframework.ai.chat.model.ChatResponse;
  import org.springframework.ai.chat.prompt.Prompt;
  
  import java.util.Map;
  
  import reactor.core.publisher.Flux;
  
  public class LLmNodeAction implements NodeAction {
  
  	private DashScopeChatModel chatModel;
  
  	private String nodeId;
  
  	public LLmNodeAction(DashScopeChatModel chatModel) {
  		this.chatModel = chatModel;
  	}
  
  	public LLmNodeAction(DashScopeChatModel chatModel, String nodeId) {
  		this.chatModel = chatModel;
  		this.nodeId = nodeId;
  	}
  
  	@Override
  	public Map<String, Object> apply(OverAllState state) {
  		// Create prompt with user message
  		UserMessage message = new UserMessage((String) state.value(OverAllState.DEFAULT_INPUT_KEY).get());
  		Flux<ChatResponse> stream = chatModel.stream(new Prompt(message));
  		return Map.of("messages", stream);
  	}
  
  }
  