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

namespace Mesnac.Action.Base
{
    public class LanguageService
    {
        private Dictionary<int, string> _languageDic { get; set; }
        #region 单例模式
        private static LanguageService _this;
        public static LanguageService Instance
        {
            get
            {
                if (null == _this)
                    _this = new LanguageService();
                return _this;
            }
        }
        private LanguageService()
        {
            this._languageDic = new Dictionary<int, string>();
        }
        #endregion
        #region 基本信息
        private string _projectWizardName = string.Empty;
        public string ProjectWizardName
        {
            get
            {
                return _projectWizardName;
            }
            set
            {
                if (_projectWizardName != value)
                {
                    this._languageDic.Clear();
                    _projectWizardName = value;
                }
            }
        }

        private readonly string ActionConfigPath = "Data\\EventConfig\\";
        private string GetConfigFilePath(string path)
        {
            string appPath = System.Windows.Forms.Application.StartupPath;
            return Path.Combine(appPath, ActionConfigPath, path);
        }
        #endregion
        #region IniLanguageDic
        private void IniLanguageDic(FileInfo fi)
        {
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.Load(fi.FullName);
            foreach (XmlNode serviceNode in xmlDocument)
            {
                if (!serviceNode.Name.Equals("Language", StringComparison.CurrentCultureIgnoreCase))
                {
                    continue;
                }
                foreach (XmlNode runtimeNode in serviceNode.ChildNodes)
                {
                    if (runtimeNode.Attributes != null
                        && runtimeNode.Attributes.Count > 1
                        && runtimeNode.Attributes["key"] != null
                        && runtimeNode.Attributes["key"].Value != null
                        && runtimeNode.Attributes["value"] != null
                        && runtimeNode.Attributes["value"].Value != null)
                    {
                        int key = 0;
                        if (int.TryParse(runtimeNode.Attributes["key"].Value.ToString(), out key))
                        {
                            if (!this._languageDic.ContainsKey(key))
                            {
                                this._languageDic.Add(key, runtimeNode.Attributes["value"].Value.ToString());
                            }
                        }
                    }
                }
            }
        }
        private void IniLanguageDic()
        {
            if (this._languageDic.Count > 0)
            {
                return;
            }
            this._languageDic.Clear();
            DirectoryInfo dir = new DirectoryInfo(GetConfigFilePath(this._projectWizardName));
            if (dir.Exists)
            {
                foreach (FileInfo fi in dir.GetFiles())
                {
                    IniLanguageDic(fi);
                }
            }
        }
        #endregion

        public string Read(int key)
        {
            if (this._languageDic.Count == 0)
            {
                IniLanguageDic();
            }
            string Result = string.Empty;
            if (this._languageDic.TryGetValue(key, out Result))
            {
                return Result;
            }
            return Result;
        }

        public string Read(string projectWizardName, int key)
        {
            this.ProjectWizardName = projectWizardName;
            return Read(key);
        }
    }
}