using PdmSwPlugin.Common.Entity;
using PdmSwPlugin.Common.Util.Xml;
using System;
using System.IO;
using System.Linq;
using System.Reflection;

namespace PdmSwPlugin.Common.Setting
{
    public class YwtUserSetting : NotifyBase
    {
        public static YwtUserSetting Instance { get; private set; }

        private string _SwFilePath;
        public string SwFilePath
        {
            get => _SwFilePath;
            set => RaiseAndSetIfChanged(ref _SwFilePath, value);
        }

        private YwtUserSetting() { }

        private static string GetSettingPath()
        {
            string dllPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            string settingPath = Path.Combine(dllPath, "UserSetting", "YwtUserSetting.xml");
            return settingPath;
        }

        private static YwtUserSetting LoadFromXml()
        {
            string settingPath = GetSettingPath();
            if (!File.Exists(settingPath))
            {
                return new YwtUserSetting();
            }
            try
            {
                return XmlUtil.ReadFromXml<YwtUserSetting>(settingPath);
            }
            catch (Exception e)
            {
                return new YwtUserSetting();
            }
        }

        public bool SaveToXml(out string ErrMsg)
        {
            ErrMsg = null;
            string settingPath = GetSettingPath();
            string settingDir = Path.GetDirectoryName(settingPath);
            if (!Directory.Exists(settingDir))
            {
                Directory.CreateDirectory(settingDir);
            }
            XmlUtil.WriteToXml(settingPath, this);
            return true;
        }


        public static YwtUserSetting Load(bool force)
        {
            if (Instance == null || force)
            {
                YwtUserSetting setting = LoadFromXml();
                var props = setting.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public).ToList();

                foreach (var prop in props)
                {
                    string name = prop.Name;
                    var oldValue = prop.GetValue(setting);
                    if (oldValue == null)
                    {
                        string value = PluginSetting.Instance[name];
                        prop.SetValue(setting, value);
                    }
                }
                Instance = setting;
            }
            return Instance;
        }
    }
}