using System;
using System.Collections.Generic;
using System.Text;
using Volian.Controls.Library;
using VEPROMS.CSLA.Library;
using System.Text.RegularExpressions;
using Volian.Base.Library;

namespace DataLoader
{
	public delegate void TransitionFixerEvent(object sender, TransitionFixerEventArgs args);
	public class TransitionFixerEventArgs
	{
		private string _MyStatus;

		public string MyStatus
		{
			get { return _MyStatus; }
			set { _MyStatus = value; }
		}
		public TransitionFixerEventArgs(string myStatus)
		{
			_MyStatus = myStatus;
		}
	}
	class TransitionFixer
	{
		public event TransitionFixerEvent StatusChanged;
		private void OnStatusChanged(object sender, TransitionFixerEventArgs args)
		{
			if (StatusChanged != null)
				StatusChanged(sender, args);
		}
		private string _Status;

		public string Status
		{
			get { return _Status; }
			set
			{
				_Status = value;
				OnStatusChanged(this, new TransitionFixerEventArgs(_Status));
			}
		}
		private int _ErrorCount = 0;

		public int ErrorCount
		{
			get { return _ErrorCount; }
			set { _ErrorCount = value; }
		}

		private StepRTB _MyStepRTB;

		public StepRTB MyStepRTB
		{
			get { return _MyStepRTB; }
		}
		private string _LogPath;
		public TransitionFixer(StepRTB myStepRTB,string logpath)
		{
			_MyStepRTB = myStepRTB;
			_LogPath = logpath;
		}
		public TimeSpan Process(bool checkRTF)
		{
			DateTime tstart = DateTime.Now;
			ProcessTransitions(checkRTF);
			return DateTime.Now - tstart;
		}
		private void ProcessTransitions(bool checkRTF)
		{
			Status = "Getting List...";
			// Loop through all Items and check before and after text
			ItemInfoList myList = ItemInfoList.Get();
			ConversionRTBProblems myProblems = new ConversionRTBProblems();
			int i = 0;
			foreach (ItemInfo item in myList)
			{
				Status = string.Format("Processing {0} of {1} steps", ++i, myList.Count);
				MyStepRTB.ViewRTB = false;
				string originalText = item.MyContent.Text;
				string updatedText = item.MyContent.Text;
				// Exclude items that are not connected (Dummy steps for invalid transition destinations)
				if (item.ItemDocVersionCount != 0 || item.MyPrevious != null || item.MyParent != null)
				{
					if (item.MyContent.ContentTransitionCount > 0)
					{
						//updatedText = Volian.Controls.Library.DisplayText.StaticRemoveRtfStyles(updatedText, item);
						foreach (TransitionInfo tran in item.MyContent.ContentTransitions)
						{
							try
							{
								updatedText = FixTransitionText(updatedText, tran);
							}
							catch (Exception ex)
							{
								Console.WriteLine("{0} {1}", ex.GetType().Name, ex.Message);
							}
						}
					}
					if (updatedText.EndsWith(" ")) updatedText = updatedText.Substring(0, updatedText.Length - 1);
					using (Content c = item.MyContent.Get())
					{
						c.Text = updatedText;
						c.Save();
					}
					if (checkRTF)
					{
						MyStepRTB.MyItemInfo = item;
						MyStepRTB.SaveText(true); // Force Save - This will put change bars on everything
						string afterText = item.MyContent.Text;
						// aftertext is 'newrtf'
						if (afterText != updatedText)
							myProblems.RTBProblems.Add(item.ItemID, item.MyContent.ContentID, originalText, updatedText, MyStepRTB.Rtf, afterText, item.Path);
					}
				}
			}
			if (checkRTF)
			{
				Status = "Saving problems";
				string logFile = _LogPath + @"\RTBProblems.xml";
				ErrorCount = myProblems.RTBProblems.Count;
				myProblems.Save(logFile);
				if (ErrorCount > 0)
				{
					System.Windows.Forms.DialogResult answer = System.Windows.Forms.MessageBox.Show(
						string.Format("{0} Differences found in Transition Text\r\nResults in {1}\r\n\r\nOpen Log File?",
						ErrorCount, logFile), "Transitions Different", System.Windows.Forms.MessageBoxButtons.YesNo, System.Windows.Forms.MessageBoxIcon.Question);
					if(answer == System.Windows.Forms.DialogResult.Yes)
						System.Diagnostics.Process.Start(logFile);
				}
			}
			Status = "Done comparing";

		}
		public string FixTransitionText(string Text, TransitionInfo tran)
		{
			string lookFor = string.Format(@"<START\]\\v0 ([^#]*?)\\v #Link:Transition[^:]*?:{0} {1}( [0-9]*){2}\[END>", tran.TranType, tran.TransitionID, "{1,2}");
			string transText = tran.ResolvePathTo();
			//Console.WriteLine(">>>>> FixTransitionText");
			//Console.WriteLine("Text = {0}", Text);
			//Console.WriteLine("lookFor = {0}", lookFor);
			//Console.WriteLine("TransText = {0}", transText);
			Match m = Regex.Match(Text, lookFor);
			if (m != null && m.Groups.Count > 1)
			{
				System.Text.RegularExpressions.Group g = m.Groups[1];
				if (g.ToString() != transText)
					Text = Text.Substring(0, g.Index) + transText + Text.Substring(g.Index + g.Length);
			}
			else
				Console.WriteLine("Transition not Found");
			return Text;
		}
	}
}