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.admin.generator.service.generator.workflow.sections;
  
  import com.alibaba.cloud.ai.studio.admin.generator.model.workflow.Edge;
  import com.alibaba.cloud.ai.studio.admin.generator.model.workflow.Node;
  import com.alibaba.cloud.ai.studio.admin.generator.model.workflow.NodeType;
  import com.alibaba.cloud.ai.studio.admin.generator.model.workflow.nodedata.StartNodeData;
  import com.alibaba.cloud.ai.studio.admin.generator.service.generator.workflow.NodeSection;
  
  import org.springframework.stereotype.Component;
  
  import java.util.List;
  
  @Component
  public class StartNodeSection implements NodeSection<StartNodeData> {
  
  	@Override
  	public boolean support(NodeType nodeType) {
  		return NodeType.START.equals(nodeType);
  	}
  
  	// use static constant of stateGraph
  	@Override
  	public String render(Node node, String varName) {
  		return "";
  	}
  
  	@Override
  	public String renderEdges(StartNodeData nodeData, List<Edge> edges) {
  		// 开始节点的Source应为StateGraph.START
  		StringBuilder sb = new StringBuilder();
  		sb.append(String.format("// Edges For [START]%n"));
  		if (edges.isEmpty()) {
  			return "";
  		}
  		sb.append(String.format("stateGraph%n"));
  		edges.forEach(edge -> sb.append(String.format(".addEdge(START, \"%s\")%n", edge.getTarget())));
  		sb.append(String.format(";%n%n"));
  		return sb.toString();
  	}
  
  	@Override
  	public List<String> getImports() {
  		return List.of();
  	}
  
  }
  