using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.OleDb;
//using System.Collections.Specialized;
//using System.Collections.Generic;
//using System.Xml;
//using System.IO;
//using System.Text;
using VEPROMS.CSLA.Library;

namespace DataLoader
{
	class OutsideTransition
	{
		private OleDbConnection _DbConnect;

		public OleDbConnection DbConnect
		{
			get { return _DbConnect; }
			set { _DbConnect = value; }
		}

		private Dictionary <string,ItemInfo> _TranLookup;

		public OutsideTransition(OleDbConnection cn)
		{
			_DbConnect = cn;
			_TranLookup = new Dictionary<string, ItemInfo>();
		}

		private List<string> _MigrationErrors;
		public ItemInfo GetItem(string key, List<string> migrationErrors)
		{
			_MigrationErrors = migrationErrors;
			if (!_TranLookup.ContainsKey(key))
				_TranLookup.Add(key, Find(key));
			return _TranLookup[key];
		}

		private ItemInfo Find(string key)
		{
			string setid = key.Substring(0, 8);
			string procid = key.Substring(8, 8);
			string path = GetPath(setid);//  Get set path from XTSETID
			string proc = GetProc(setid, procid);//  Get procedure number from XTPROCID
			return Find(path,proc);//  Return ItemInfo based upon path and procedure number
		}
	
		private ItemInfo Find(string path, string proc)
		{
			return OTLookup.Find(path, proc,_MigrationErrors);
		}

		private string GetProc(string setid, string procid)
		{
			string retval = null;
			string xtproccmd = "SELECT * FROM [xtprocid] WHERE [SETID]='" + setid + "' AND [PROCID]='" + procid + "'";
			using (OleDbDataAdapter da = new OleDbDataAdapter(xtproccmd, _DbConnect))
			{
				try
				{
					DataSet ds = new DataSet();
					da.Fill(ds);
					DataTable dt = ds.Tables[0];
					dt.CaseSensitive = true;
					DataRow dr = dt.Rows[0]; // there should be only one entry!
					retval = dr["Procnum"].ToString(); // this should be the procedure number!
					ds.Dispose();
				}
				catch (Exception ex)
				{
					return "<Procedure Number>";//ex.GetType().Name + " " + ex.Message;
				}
			}
			return retval;
		}

		private string GetPath(string setid)
		{
			try
			{
				string xtsetcmd = "SELECT * FROM [xtsetid] WHERE [SETID]='" + setid + "'";
				OleDbDataAdapter da = new OleDbDataAdapter(xtsetcmd, _DbConnect);
				DataSet ds = new DataSet();
				da.Fill(ds);
				DataTable dt = ds.Tables[0];
				dt.CaseSensitive = true;
				DataRow dr = dt.Rows[0]; // there should be only one entry!
				// if there are more than one entry use the first legitimate entry
				// for NSP we found multiple "FIRST RECORD"s in numerious XTSETID.DBF files
				if (dt.Rows.Count > 1)
				{
					int irow = 0;
					while (irow < dt.Rows.Count-1 && dt.Rows[irow]["PLANTTITLE"].ToString() == "FIRST RECORD") irow++;
					dr = dt.Rows[irow];
				}
				string retval = dr["Path"].ToString();
				da.Dispose();
				ds.Dispose();
				return retval; // dr["Path"].ToString(); // this should be the path to the proc set!
			}
			catch (Exception ex)
			{
				return "<Procedure Set Location>";//ex.GetType().Name + " " + ex.Message;
			}
		}

		private string GetTitle(string setid, string procid)
		{
			try
			{

				string xtproccmd = "SELECT * FROM [xtprocid] WHERE [SETID]='" + setid + "' AND [PROCID]='" + procid + "'";
				OleDbDataAdapter da = new OleDbDataAdapter(xtproccmd, _DbConnect);
				DataSet ds = new DataSet();
				da.Fill(ds);
				DataTable dt = ds.Tables[0];
				dt.CaseSensitive = true;
				DataRow dr = dt.Rows[0]; // there should be only one entry!
				string retval = dr["Proctitle"].ToString();
				da.Dispose();
				ds.Dispose();
				return retval; // dr["Proctitle"].ToString(); // this should be the procedure number!
			}
			catch (Exception ex)
			{
				return "<Procedure Title>";//ex.GetType().Name + " " + ex.Message;
			}
		}

		public string GetDescription(string key)
		{
			string setid = key.Substring(0, 8);
			string procid = key.Substring(8, 8);
			string path = GetPath(setid);// Get set path from XTSETID
			string proc = GetProc(setid, procid);// Get procedure number from XTPROCID
			string title = GetTitle(setid, procid);// Get procedure title from XTPROCID
			return string.Format("{0}, {1} in folder {2}",proc,title,path);
		}
		public string GetTransitionText(string key)
		{
			string setid = key.Substring(0, 8);
			string procid = key.Substring(8, 8);
			string proc = GetProc(setid, procid);// Get procedure number from XTPROCID
			string title = GetTitle(setid, procid);// Get procedure title from XTPROCID
			proc = proc.Replace("-", @"\u8209?");	// in proc number, replace dash and spaces with
			proc = proc.Replace(" ", @"\u160?");	//    nonbreak unicode dash & hardspace.
			title = title.Replace("-", @"\u8209?");	// in title, just do the hardspace.
			return string.Format("{0}, {1}", proc, title);
		}
		//private string ProcessOutSideTrans(OleDbConnection cn, string thekey, string pth)
		//{
		//   string xtransstring = null;
		//   DataTable dt = null;
		//   DataSet ds = null;
		//   OleDbDataAdapter da = null;

		//   DataTable dt2 = null;
		//   DataSet ds2 = null;
		//   OleDbDataAdapter da2 = null;

		//   string tosetid = thekey.Substring(0, 8);
		//   string toprocid = thekey.Substring(8, 8);

		//   /// Get the path to the procedure set from the SETID 
		//   string xtsetcmd = "SELECT * FROM [xtsetid] WHERE [SETID]='" + tosetid + "'";
		//   string xtproccmd = "SELECT * FROM [xtprocid] WHERE [SETID]='" + tosetid + "' AND [PROCID]='" + toprocid + "'";

		//   da = new OleDbDataAdapter(xtsetcmd, cn);
		//   da2 = new OleDbDataAdapter(xtproccmd, cn);

		//   // get xtsetid records.
		//   ds = new DataSet();
		//   try
		//   {
		//      da.Fill(ds);
		//      dt = ds.Tables[0];
		//      dt.CaseSensitive = true;
		//   }
		//   catch (Exception ex)
		//   {
		//      log.Error("Error getting XTSETID");
		//      log.ErrorFormat("to number = {0}", thekey);
		//      log.ErrorFormat("{0}\r\n\r\n{1}", ex.Message, ex.InnerException);
		//      //return textm;
		//   }
		//   DataRow dr = dt.Rows[0]; // there should be only one entry!
		//   string setpth = dr["Path"].ToString(); // this should be the path to the proc set!

		//   // get xtprocid records
		//   ds2 = new DataSet();
		//   try
		//   {
		//      da2.Fill(ds2);
		//      dt2 = ds2.Tables[0];
		//      dt2.CaseSensitive = true;
		//   }
		//   catch (Exception ex)
		//   {
		//      log.Error("Error getting XTPROCID");
		//      log.ErrorFormat("to number = {0}", thekey);
		//      log.ErrorFormat("{0}\r\n\r\n{1}", ex.Message, ex.InnerException);
		//      //return textm;
		//   }
		//   DataRow dr2 = dt2.Rows[0]; // there should be only one entry!
		//   string procnum = dr2["Procnum"].ToString(); // this should be the procedure number!

		//   xtransstring = setpth + "\\" + procnum; // ex: VEHLP\PROCS\0POP05-EO00

		//   //if (pathsAreEqual(setpth, pth))
		//   //{
		//   //   // Outside Transiton is to this procedure set (not really outsde)
		//   //   // need to find the item id that references the proc number and title
		//   //   // - find the setpth in the doc.version
		//   //}
		//   //else
		//   //return thekey; // is a true outside transition

		//   return xtransstring;
		//}
	}

	internal static class OTLookup
	{
		public static readonly log4net.ILog _MyLog = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		private static Dictionary<string, ItemInfo> _Lookup = null;
		static List<string> _MigrationErrors;
		public static ItemInfo Find(string path, string procnum, List<string> migrationErrors)
		{
			_MigrationErrors = migrationErrors;
			string key = string.Format(@"{0}\{1}",path,procnum);
			if (_Lookup == null)
				_Lookup = new Dictionary<string, ItemInfo>();
			if (!_Lookup.ContainsKey(key))
				_Lookup.Add(key, FindItem(path, procnum));
			return _Lookup[key];
		}

		private static DocVersionInfoList _DocVersions = null;
		private static ItemInfo FindItem(string path, string procnum)
		{
			if (_DocVersions == null) 
				_DocVersions = DocVersionInfoList.Get();
			DocVersionInfo dvi = ExactMatch(path);
			if (dvi == null) dvi = PartialMatch(path);
			if (dvi != null) return FindItem(dvi, procnum);
			return null;
		}

		private static ItemInfo FindItem(DocVersionInfo dvi, string procnum)
		{
			foreach (ItemInfo itm in dvi.Procedures)
				if (itm.DisplayNumber == procnum)
					return itm;
			return null;
		}

		private static DocVersionInfo PartialMatch(string path)
		{
			string partial = GetPartial(path);
			if (partial != null)
			{
				foreach (DocVersionInfo dvi in _DocVersions)
				{
					if (dvi.MyFolder.Title.ToUpper().EndsWith(partial.ToUpper()))
						return dvi;
				}
				if (path.ToUpper().EndsWith("ABBYPROC"))
					return PartialMatch(path + ".prc");
			}
			// if we cannot find a match using two folders, simple use one
			partial = GetPartial2(path);
			if (partial != null)
			{
				DocVersionInfo match = null;
				foreach (DocVersionInfo dvi in _DocVersions)
				{
					if (dvi.MyFolder.Title.ToUpper().EndsWith(partial.ToUpper()))
					{
						if (match == null)
							match = dvi;
						else
						{
							_MyLog.WarnFormat("Duplicate external paths found for path '{0}'", path);
							_MigrationErrors.Add(string.Format("Duplicate external paths found for path '{0}'", path));
						}
						
					}
				}
			}
			return null;
		}
		private static string GetPartial(string path)
		{
			//Console.WriteLine(string.Format("GetPartial path = {0}",path));
			if (path.Contains("\\"))
			{
				string[] parts = path.Split("\\".ToCharArray());
				return "\\" + parts[parts.Length - 2] + "\\" + parts[parts.Length - 1];
			}
			else
				return null;
		}
		private static string GetPartial2(string path)
		{
			//Console.WriteLine(string.Format("GetPartial path = {0}",path));
			if (path.Contains("\\"))
			{
				string[] parts = path.Split("\\".ToCharArray());
				return  "\\" + parts[parts.Length - 1];
			}
			else
				return null;
		}
		private static DocVersionInfo ExactMatch(string path)
		{
			foreach (DocVersionInfo dvi in _DocVersions)
				if (dvi.MyFolder.Title.ToUpper().EndsWith(path.ToUpper()))
					return dvi;
			if (path.ToUpper().EndsWith("ABBYPROC"))
				return ExactMatch(path + ".prc");
			return null;
		}
	}
}