package com.jttech.pfcs.util;

import com.alibaba.fastjson.JSONObject;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.input.SAXBuilder;
import org.springframework.util.StringUtils;


import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.LinkedList;
import java.util.List;

/**
 * @author Skaði the Corrupting Heart
 * @version 1.0.0
 * @ClassName xml.java
 * @Description TODO
 * @createTime 2022年04月02日 17:12
 */
public class XmlUtils {

    public static JSONObject xml2Json(String xmlStr) {
        try {
            if (StringUtils.isEmpty(xmlStr)) {
                return null;
            }
            xmlStr = xmlStr.replaceAll("\\\n", "");
            byte[] xml = xmlStr.getBytes("UTF-8");
            JSONObject json = new JSONObject();
            InputStream is = new ByteArrayInputStream(xml);
            SAXBuilder sb = new SAXBuilder();
            Document doc = sb.build(is);
            Element root = doc.getRootElement();
            json.put(root.getName(), iterateElement(root));

            return json;
        } catch (Exception pE) {
            throw new RuntimeException("xml文件解析失败", pE);
        }


    }


    private static JSONObject iterateElement(Element element) {
        List<Element> node = element.getChildren();
        JSONObject obj = new JSONObject();
        List list = null;
        for (Element child : node) {
            list = new LinkedList();
            String text = child.getTextTrim();
            if (StringUtils.isEmpty(text)) {
                if (child.getChildren().size() == 0) {
                    continue;
                }
                if (obj.containsKey(child.getName())) {
                    list = (List) obj.get(child.getName());
                }
                list.add(iterateElement(child)); // 遍历child的子节点
                obj.put(child.getName(), list);
            } else {
                if (obj.containsKey(child.getName())) {
                    Object value = obj.get(child.getName());
                    try {
                        list = (List) value;
                    } catch (ClassCastException e) {
                        list.add(value);
                    }
                }
                if (child.getChildren().size() == 0) { // child无子节点时直接设置text
                    obj.put(child.getName(), text);
                } else {
                    list.add(text);
                    obj.put(child.getName(), list);
                }
            }
        }
        return obj;

    }
}