using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using Newtonsoft.Json;
namespace Common
{
    /// <summary>
    /// xmldata 实体
    /// </summary>
    public class XmlData
    {
        public string NodeName { get; set; }

        public Dictionary<string, string> Attributes { get; set; }

        public string Text { get; set; }

        public List<XmlData> Children { get; set; }
    }


    /// <summary>
    ///  Xml工具类
    /// </summary>
    public class XmlHelper
    {

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="xmlPath"></param>
        public XmlHelper(string xmlPath)
        {
            //初始化
            Document = new XmlDocument();
            //读取xml
            Document.Load(xmlPath);

            string json = JsonConvert.SerializeXmlNode(Document);

            
        }

        public XmlDocument Document { get; set; }

        /// <summary>
        /// 解析   LastUpdateDate：2021-07-07 16:28:47.694  Author：Lingbug
        /// </summary>
        /// <returns></returns>
        public (List<XmlData> TreeList, List<XmlData> DataList) Analysis()
        {
            //初始化
            var list = new List<XmlData>();
            var allList = new List<XmlData>();
            //获取根结点
            XmlElement rootElement = Document.DocumentElement;
            //根节点
            var rootModel = CreateModelByNode(rootElement);
            //添加到集合
            list.Add(rootModel);
            //添加到集合
            allList.Add(rootModel);
            //解析
            AnalysisRecursion(rootElement, null, rootModel, ref list, ref allList);
           
            //返回
            return (list, allList);
        }

        private void AnalysisRecursion(XmlElement element, XmlNode node, XmlData parent, ref List<XmlData> list, ref List<XmlData> allList)
        {
            //子节点
            XmlNode child = element == null ? node.FirstChild : element.FirstChild;
            while (true)
            {
                //对象
                var item = CreateModelByNode(child);
                if (item == null)
                {
                    //中止
                    break;
                }
                //添加到集合
                allList.Add(item);
                if (parent == null)
                {
                    //添加到集合
                    list.Add(item);
                }
                else
                {
                    if (!string.IsNullOrWhiteSpace(item.Text))
                    {
                        //赋值
                        parent.Text = item.Text;
                    }
                    else
                    {
                        //添加到集合
                        parent.Children.Add(item);
                    }
                }
                //递归
                AnalysisRecursion(null, child, item, ref list, ref allList);
                //下一个同级
                child = child.NextSibling;
            }
        }

        private XmlData CreateModelByNode(XmlNode child)
        {
            if (child == null)
            {
                //为空，不操作
                return null;
            }
            //初始化
            var item = new XmlData()
            {
                NodeName = child.Name,
                Attributes = AnalysisElementAttribute(child),
                Children = new List<XmlData>(),
            };
            if (child.Name == "#text")
            {
                //文本
                item.Text = child.Value;
            }
            //返回
            return item;
        }

        private Dictionary<string, string> AnalysisElementAttribute(XmlNode element)
        {
            //属性
            var attrList = element.Attributes;
            if (attrList != null && attrList.Count > 0)
            {
                //初始化
                var dicAttr = new Dictionary<string, string>();
                for (int i = 0; i < attrList.Count; i++)
                {
                    //属性
                    var attrItem = attrList[i];
                    //添加到字典
                    dicAttr.Add(attrItem.Name, attrItem.Value);
                }
                //返回
                return dicAttr;
            }
            else
            {
                //返回
                return new Dictionary<string, string>();
            }
        }

    }
}