using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;

namespace HotelPms.Share.Xml
{
    public class XmlOperation
    {
        /// ****************************** Description *******************************
        /// žƒVƒXƒeƒ€–¼Ì
        /// @”Ä—pƒNƒ‰ƒX
        /// žŠT—v
        /// @XML‚Ì‘€ìF’ljÁAC³AíœAŒŸõ‚È‚Ç
        /// <>Žg—p•û–@
        /// ž—š—ð
        /// @2007/11/10  ¬–؁@Ÿ—´    V‹Kì¬
        /// ****************************** Declarations ******************************
        #region  ššššš@Declartions@ššššš

        private string fileName;
        private XmlDocument? xd;

        #endregion

        #region  ššššš@Property@ššššš

        public string FileName
        {
            get { return fileName; }
            set { fileName = value; }
        }
	        
        #endregion

        #region  ššššš@Class Event@ššššš

        public XmlOperation()
            : this("")
        {
        }

        public XmlOperation(string fileName)
        {
            if (!fileName.Equals(""))
            {
                this.fileName = fileName;
            }
            xd = new XmlDocument();
            xd.Load(this.fileName);
        }

        #endregion

        #region  ššššš@Private Function@ššššš
        #endregion

        #region  ššššš@Public  Function@ššššš

        public XmlElement? AddNode(string parentXPath, string key, string value)
        {
            try
            {
                XmlElement ownerNode = (XmlElement)xd.SelectSingleNode(parentXPath);
                XmlElement newNode = xd.CreateElement(key);
                newNode.InnerText = value;
                ownerNode.AppendChild(newNode);
                return newNode;
            }
            catch
            {
                return null;
            }
        }

        /// <summary>
        /// Node‚ÌText‚̏C³
        /// </summary>
        /// <param name="xPath"></param>
        /// <param name="value"></param>
        /// <returns></returns>
        public bool SetNodeText(string xPath,string value)
        {
            try
            {
                xd.SelectSingleNode(xPath).InnerText = value;
                return true;
            }
            catch
            {
                return false;
            }
        }

        /// <summary>
        /// Node‚ÌText‚ðŽæ“¾‚·‚é
        /// </summary>
        /// <param name="xPath"></param>
        /// <returns></returns>
        public string GetNodeText(string xPath)
        {
            return xd.SelectSingleNode(xPath).InnerText;
        }


        /// <summary>
        /// NodeŒŸõ
        /// </summary>
        /// <param name="xPath"></param>
        /// <returns></returns>
        public XmlNode? SelectSingleNode(string xPath)
        {
            return xd.SelectSingleNode(xPath);
        }
        
        /// <summary>
        /// •Û‘¶‚·‚é
        /// </summary>
        /// <returns></returns>
        public bool Save()
        {
            try
            {
                xd.Save(fileName);
                return true;
            }
            catch
            {
                return false;
            }
        }

        #endregion
    }
}