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package me.chanjar.weixin.common.util;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import me.chanjar.weixin.common.error.WxErrorException;
import me.chanjar.weixin.common.error.WxRuntimeException;
import org.dom4j.*;
import org.dom4j.io.SAXReader;
import org.dom4j.tree.DefaultText;
import org.xml.sax.SAXException;

import java.io.StringReader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 *  * XML转换工具类.
 * Created by Binary Wang on 2018/11/4.
 * 
 *
 * @author Binary Wang
 */
public class XmlUtils {

  public static Map xml2Map(String xmlString) {
    Map map = new HashMap<>(16);
    try {
      SAXReader saxReader = new SAXReader();
      saxReader.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
      saxReader.setFeature("http://javax.xml.XMLConstants/feature/secure-processing", true);
      saxReader.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
      saxReader.setFeature("http://xml.org/sax/features/external-general-entities", false);
      saxReader.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
      Document doc = saxReader.read(new StringReader(xmlString));
      Element root = doc.getRootElement();
      List elements = root.elements();
      for (Element element : elements) {
        map.put(element.getName(), element2MapOrString(element));
      }
    } catch (DocumentException | SAXException e) {
      throw new WxRuntimeException(e);
    }

    return map;
  }

  private static Object element2MapOrString(Element element) {

    final List content = element.content();
    final Set names = names(content);

    // 判断节点下有无非文本节点(非Text和CDATA)，如无，直接取Text文本内容
    if (names.size() < 1) {
      return element.getText();
    }

    Map result = Maps.newHashMap();
    if (names.size() == 1) {
      // 说明是个列表，各个子对象是相同的name
      List