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package org.tinygroup.tinyscript.tree.impl;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.tinygroup.tinyscript.tree.DataNode;
import org.tinygroup.tinyscript.tree.impl.TreeDataNode.DataNodeArray;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

/**
 * 树型节点工具类
 * @author yancheng11334
 *
 */
public final class DataNodeUtil {

	private DataNodeUtil(){
		
	}
	
	/**
	 * 将TreeDataNode转换JSON字符串
	 * @param tree
	 * @return
	 */
	public static String toJson(TreeDataNode tree){
		JSONObject json = new JSONObject();
		convertJson(tree,json);
		return json.toJSONString();
	}
	
	/**
	 * 将JSON字符串转换TreeDataNode
	 * @param json
	 * @return
	 */
	public static TreeDataNode readJson(String jsonStr){
		JSONObject json = JSON.parseObject(jsonStr);
		TreeDataNode tree = new TreeDataNode();
		for(Entry entry:json.entrySet()){
			convertJsonNode(tree,entry);
		}
		return tree;
	}
	
	private static void convertJsonNode(TreeDataNode tree,Entry entry){
		if(entry.getValue()!=null){
			if(entry.getValue() instanceof JSONArray){
				TreeDataNode node = new TreeDataNode();
				JSONArray array = (JSONArray)entry.getValue();
				for(int i=0;i jsonEntry:json.entrySet()){
						convertJsonNode(node,jsonEntry);
					}
					tree.addNode(entry.getKey(), node);
				}
			}else if(entry.getValue() instanceof JSONObject){
				TreeDataNode node = new TreeDataNode(); 
				JSONObject json = (JSONObject)entry.getValue();
				for(Entry jsonEntry:json.entrySet()){
					convertJsonNode(node,jsonEntry);
				}
				tree.addNode(entry.getKey(), node);
			}else{
			   tree.put(entry.getKey(), entry.getValue());
			}
		 }else{
			   tree.put(entry.getKey(), entry.getValue());
		 }
	}
	
	private static void convertJson(TreeDataNode tree,JSONObject json){
		if(tree==null || json==null){
		   return;
		}
		Map maps = (Map) tree.getAttributes();
		for(Entry entry:maps.entrySet()){
			if(entry.getValue()!=null && entry.getValue() instanceof DataNodeArray){
				//设置子节点
				DataNodeArray array = (DataNodeArray) entry.getValue();
				List children = array.getChildren();
				if(array.isArray() || array.getLength()>1){
				   //节点列表
				   List