using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml;
using Aitex.Common.Util;
using Aitex.Core.RT.Log;
using Aitex.Core.Util;

namespace Aitex.Triton160.UI.Config
{
    class SystemConfigManager : Singleton<SystemConfigManager>
    {
        private XmlDocument _domLocal = new XmlDocument();
        private XmlDocument _domDefault = new XmlDocument();
        public void Initialize()
        {
            try
            {
                string fileNameLocal = PathManager.GetCfgDir() + "\\SystemConfig.xml";
                if (File.Exists(fileNameLocal))
                {
                    _domLocal.Load(fileNameLocal);
                }


                string fileNameDefault = PathManager.GetCfgDir() + "\\SystemConfig.default.xml";

                if (File.Exists(fileNameDefault))
                {
                    _domDefault.Load(fileNameDefault);
                }

                if (!File.Exists(fileNameDefault) && !File.Exists(fileNameLocal))
                    throw new ApplicationException(string.Format("did not find the system config file {0} ", fileNameLocal));

            }
            catch (Exception ex)
            {
                LOG.Write(ex);
                throw;
            }
        }

        public string GetUiLayoutXmlFile()
        {
            return GetValue("/SystemConfig/uiLayoutXmlFile");
        }

        public string GetTopviewLogoFile()
        {
            return GetValue("/SystemConfig/topViewLogoFile");
        }

        string GetValue(string path)
        {
            XmlElement node =
                _domLocal.SelectSingleNode(path) as XmlElement;

            if (node == null)
            {
                node =
                _domDefault.SelectSingleNode(path) as XmlElement;
            }

            if (node == null)
                return null;

            return node.GetAttribute("value");
        }
        
        //dbName, displayName, cnName, isPressureAxis
        public List<Tuple<string, string, string, bool>> GetMonitorDataList()
        {
            List<Tuple<string, string, string, bool>> lstResult = new List<Tuple<string, string, string, bool>>();

            XmlNodeList nodeList = _domLocal.SelectNodes("/SystemConfig/DataElements/DataElement");
            if (nodeList == null || nodeList.Count==0)
            {
                nodeList = _domDefault.SelectNodes("/SystemConfig/DataElements/DataElement");
            }
            if (nodeList != null)
            {
                foreach (XmlElement dataXmlElement in nodeList)
                {
                    lstResult.Add(Tuple.Create(dataXmlElement.GetAttribute("dbName"), 
                                            dataXmlElement.GetAttribute("displayName"), 
                                            dataXmlElement.GetAttribute("cn"),
                                       !string.IsNullOrEmpty(dataXmlElement.GetAttribute("isPressureAxis")) && bool.Parse(dataXmlElement.GetAttribute("isPressureAxis"))));
                }            
            }

            return lstResult;
        }
    }
}