//
// (C) Copyright 2003-2012 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting
// documentation.
//
// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
// UNINTERRUPTED OR ERROR FREE.
//
// Use, duplication, or disclosure by the U.S. Government is subject to
// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.
//

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using System.Xml.Linq;
using System.IO;
using System.Xml;
using System.Diagnostics;
using Autodesk.Revit.DB.Events;

namespace Revit.SDK.Samples.ProgressNotifier.CS
{
  /// <summary>
  /// A collection of ProgressItem objects arranged in a stack
  /// </summary>
  public class ProgressStack
  {
    /// <summary>
    /// ProgressItem stack
    /// </summary>
    public System.Collections.Generic.Stack<ProgressItem> m_itemStack;

    /// <summary>
    /// Constructor
    /// </summary>
    public ProgressStack()
    {
      this.m_itemStack = new Stack<ProgressItem>();
    }

    /// <summary>
    /// Add event data
    /// </summary>
    /// <param name="progressEvent"></param>
    /// <returns></returns>
    public ProgressItem AddEventData( Autodesk.Revit.DB.Events.ProgressChangedEventArgs progressEvent )
    {
      ProgressItem currentProgressItem = null;


      switch( progressEvent.Stage )
      {
        case ProgressStage.Started:
          {
            ProgressItem pi = new ProgressItem( progressEvent.Caption, progressEvent.LowerRange, progressEvent.UpperRange, progressEvent.Position, progressEvent.Stage );
            m_itemStack.Push( pi );
            currentProgressItem = pi;
            break;
          }
        case ProgressStage.PositionChanged:
          {
            ProgressItem pi = m_itemStack.Peek();
            if( pi.Name != progressEvent.Caption )
            {
              Debug.WriteLine( "Name not matching?" );
            }
            pi.Position = progressEvent.Position;
            pi.Stage = progressEvent.Stage;
            currentProgressItem = pi;
            break;
          }

        case ProgressStage.RangeChanged:
          {
            ProgressItem pi = m_itemStack.Peek();
            pi.Upper = progressEvent.UpperRange;
            pi.Stage = progressEvent.Stage;
            currentProgressItem = pi;
            break;
          }

        case ProgressStage.Finished:
          {
            ProgressItem pi = m_itemStack.Pop();
            pi.IsDone = true;
            pi.Stage = progressEvent.Stage;
            currentProgressItem = pi;
            break;
          }

        case ProgressStage.CaptionChanged:
          {
            ProgressItem pi = m_itemStack.Peek();
            pi.Name = progressEvent.Caption;
            pi.Stage = progressEvent.Stage;
            Debug.WriteLine( "Caption Change at top." );
            currentProgressItem = pi;
            break;
          }

        case ProgressStage.UserCancelled:
          {
            Debug.WriteLine( "Cancelled." );
            currentProgressItem = new ProgressItem( progressEvent.Caption, progressEvent.LowerRange, progressEvent.UpperRange, progressEvent.Position, progressEvent.Stage );
            break;
          }

        default:
          throw new Exception( "Unknown stage." );
      }

      if( m_itemStack.Count == 0 )
      {
        Debug.WriteLine( "Stack empty" );
      }
      else
        Debug.WriteLine( this.ToString() );

      return currentProgressItem;
    }

    /// <summary>
    /// ToString
    /// </summary>
    /// <returns></returns>
    public override string ToString()
    {
      StringBuilder sb = new StringBuilder();
      sb.AppendLine( "-ProgressBar Stack-" );
      foreach( ProgressItem pi in m_itemStack )
      {
        sb.AppendLine( pi.ToString() );
      }
      return sb.ToString();
    }


    /// <summary>
    /// ToStringList
    /// </summary>
    /// <param name="padDepth"></param>
    /// <returns></returns>
    public List<String> ToStringList( int padDepth = 0 )
    {
      List<string> itemList = new List<string>();

      if( padDepth != 0 )
      {
        int padding = padDepth - m_itemStack.Count;

        for( int index = 0; index != padding; ++index )
        {
          itemList.Add( "" );
        }
      }
      foreach( ProgressItem pi in m_itemStack )
      {
        itemList.Add( pi.ToString() );
      }
      return itemList;
    }
  }
}