content: /*
   * Copyright 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.core.workflow.processor.impl;
  
  import com.alibaba.cloud.ai.studio.runtime.domain.workflow.Edge;
  import com.alibaba.cloud.ai.studio.runtime.domain.workflow.Node;
  import com.alibaba.cloud.ai.studio.runtime.domain.workflow.NodeResult;
  import com.alibaba.cloud.ai.studio.runtime.domain.workflow.NodeStatusEnum;
  import com.alibaba.cloud.ai.studio.runtime.domain.workflow.NodeTypeEnum;
  import com.alibaba.cloud.ai.studio.runtime.utils.JsonUtils;
  import com.alibaba.cloud.ai.studio.core.config.CommonConfig;
  import com.alibaba.cloud.ai.studio.core.base.manager.RedisManager;
  import com.alibaba.cloud.ai.studio.core.workflow.WorkflowContext;
  import com.alibaba.cloud.ai.studio.core.workflow.WorkflowInnerService;
  import com.alibaba.cloud.ai.studio.core.workflow.processor.AbstractExecuteProcessor;
  import com.google.common.collect.Maps;
  import org.jgrapht.graph.DirectedAcyclicGraph;
  import org.springframework.ai.chat.memory.ChatMemory;
  import org.springframework.stereotype.Component;
  
  import java.util.Map;
  
  /**
   * Iterator Start Node Processor
   * <p>
   * This processor is responsible for handling the start node in an iterator workflow. It
   * initializes the iteration context and prepares for iterative task execution.
   * <p>
   * Features: 1. Initializes iteration execution context 2. Sets up execution status
   * tracking 3. Prepares result map for iteration tasks 4. Manages execution timing
   *
   * @author guning.lt
   * @version 1.0.0-M1
   */
  @Component("IteratorStartExecuteProcessor")
  public class IteratorStartExecuteProcessor extends AbstractExecuteProcessor {
  
  	/**
  	 * Key for storing execution result in the result map
  	 */
  	private static final String RESULT_KEY = "result";
  
  	/**
  	 * Value indicating successful initialization
  	 */
  	private static final String SUCCESS_VALUE = "success";
  
  	/**
  	 * Constructor for IteratorStartExecuteProcessor
  	 * @param redisManager Redis manager for caching
  	 * @param workflowInnerService Workflow inner service for context management
  	 * @param conversationChatMemory Chat memory for conversation context
  	 * @param commonConfig Common configuration settings
  	 */
  	public IteratorStartExecuteProcessor(RedisManager redisManager, WorkflowInnerService workflowInnerService,
  			ChatMemory conversationChatMemory, CommonConfig commonConfig) {
  		super(redisManager, workflowInnerService, conversationChatMemory, commonConfig);
  	}
  
  	/**
  	 * Execute the iterator start node initialization
  	 * @param graph The workflow graph
  	 * @param node The current node to execute
  	 * @param context The workflow context
  	 * @return NodeResult containing the initialization status and timing information
  	 */
  	@Override
  	public NodeResult innerExecute(DirectedAcyclicGraph<String, Edge> graph, Node node, WorkflowContext context) {
  		long start = System.currentTimeMillis();
  		NodeResult startNodeResult = new NodeResult();
  		Map<String, Object> resultMap = Maps.newHashMap();
  		resultMap.put(RESULT_KEY, SUCCESS_VALUE);
  		startNodeResult.setNodeId(node.getId());
  		startNodeResult.setNodeName(node.getName());
  		startNodeResult.setNodeType(node.getType());
  		startNodeResult.setNodeStatus(NodeStatusEnum.EXECUTING.getCode());
  		startNodeResult.setInput(JsonUtils.toJson(resultMap));
  		startNodeResult.setOutput(JsonUtils.toJson(resultMap));
  		startNodeResult.setNodeExecTime((System.currentTimeMillis() - start) + "ms");
  		startNodeResult.setUsages(null);
  		return startNodeResult;
  	}
  
  	@Override
  	public String getNodeType() {
  		return NodeTypeEnum.ITERATOR_START.getCode();
  	}
  
  	@Override
  	public String getNodeDescription() {
  		return NodeTypeEnum.ITERATOR_START.getDesc();
  	}
  
  }
  