using System;
using System.ComponentModel;
using System.IO;

namespace VEPROMS.CSLA.Library
{
	[Serializable]
	[TypeConverter(typeof(ExpandableObjectConverter))]
	public class RODbConfig : ConfigDynamicTypeDescriptor, INotifyPropertyChanged
	{
        #region DynamicTypeDescriptor
        internal override bool IsReadOnly => _RODb == null;
        #endregion
        #region XML
        private readonly XMLProperties _Xp;
		#endregion
		#region Constructors
		private readonly RODb _RODb;
		public RODbConfig(RODb roDb)
		{
			_RODb = roDb;
			string xml = roDb.Config;
			if (xml == string.Empty) xml = "<Config/>";
			_Xp = new XMLProperties(xml);
		}
		private readonly RODbInfo _RODbInfo;
		public RODbConfig(RODbInfo roDbInfo)
		{
			_RODbInfo = roDbInfo;
			string xml = roDbInfo.Config;
			if (xml == string.Empty) xml = "<Config/>";
			_Xp = new XMLProperties(xml);
		}
		public RODbConfig(string xml)
		{
			if (xml == string.Empty) xml = "<Config/>";
			_Xp = new XMLProperties(xml);
		}
		public RODbConfig()
		{
			string xml = "<Config/>";
			_Xp = new XMLProperties(xml);
		}
        internal string GetValue(string group, string item) => _Xp[group, item];
        #endregion
        #region Local Properties
        [Category("General")]
		[DisplayName("ROName")]
		[Description("ROName")]
		public string ROName
		{
			get { return (_RODb != null ? _RODb.ROName : _RODbInfo.ROName); }
			set { if (_RODb != null) _RODb.ROName = value; }
		}
		[Category("General")]
		[DisplayName("FolderPath")]
		[Description("FolderPath")]
		public string FolderPath
		{
			get { return (_RODb != null ? _RODb.FolderPath : _RODbInfo?.FolderPath); }
			set { if (_RODb != null) _RODb.FolderPath = value; }
		}
        public RODb MyRODb => _RODb;
        #endregion
        #region ToString
        public override string ToString()
		{
			string s = _Xp.ToString();
            return s == "<Config/>" || s == "<Config></Config>" ? string.Empty : s;
        }
        #endregion
        #region RODefaults
        [Category("Referenced Objects")]
		[DisplayName("Graphic File Extension")]
		[RefreshProperties(RefreshProperties.All)]
		[Description("Default File Extension")]
		public string Graphics_defaultext
		{
			get
			{
				// For this data:
				//  look in roapp.ini in the FolderPath directory;
				//  look in top folder's config
				//  set to Volian default, i.e. "TIF".
				string s = GetRoAppIniValue("Extention");
				if (s == null || s == string.Empty)
					s = TopFolderConfigValue();
				if (s == null || s == string.Empty)
					return s = "TIF";

				return s;
			}
		}
		private string GetRoAppIniValue(string p_2)
        {
            if (FolderPath == null) return null;
            string inipath = FolderPath + @"\roapp.ini";
            if (!File.Exists(inipath)) return null;
            using (StreamReader myReader = new StreamReader(inipath))
            {
                string sLine;
                int indx = -1;
                while ((sLine = myReader.ReadLine()) != null)
                {
                    if (sLine.Length > 0 && sLine.Substring(0, 1) != ";")
                    {
                        if ((indx = sLine.ToLower().IndexOf(p_2.ToLower())) >= 0)
                        {
                            indx = sLine.IndexOf("=", indx + 9);
                            return sLine.Substring(indx + 1, sLine.Length - indx - 1).Trim();
                        }
                    }
                }
                myReader.Close();
            }

            return null;
        }
        private string TopFolderConfigValue()
		{
			FolderInfo fi = FolderInfo.GetTop();
			return fi.FolderConfig.Graphics_defaultext;
		}
		public string GetDefaultGraphicExtension()
		{
			if (_RODb != null)
				return Graphics_defaultext;
			if (_RODbInfo != null)
				return Graphics_defaultext;
			else
				return "TIF"; // this is the Volian Default
		}
		public string GetDefaultGraphicExtensionLocation()
		{
			string s = GetRoAppIniValue("Extention");
			if (s != null && s != string.Empty) return "Default Extension found in roapp.ini";
			s = TopFolderConfigValue();
			if (s != null && s != string.Empty) return "Default Extension defined in veproms properties";
			return "Used program default";
		}

		#endregion
	}
}