using System;
using System.Data;
using System.IO;
using System.Reflection;
using System.Web.UI;
using System.Text.RegularExpressions;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace yaf.editor
{
	/// <summary>
	/// Summary description for ForumEditorBase.
	/// </summary>
	public class ForumEditor : Control
	{
		protected string m_baseDir = string.Empty;

		public new string ResolveUrl( string relativeUrl )
		{
			if ( m_baseDir != string.Empty )
				return m_baseDir + relativeUrl;
			else
				return base.ResolveUrl( relativeUrl );
		}

		protected virtual string Replace( string txt, string match, string replacement )
		{
			RegexOptions options = RegexOptions.IgnoreCase | RegexOptions.Multiline;
			while ( Regex.IsMatch( txt, match, options ) ) txt = Regex.Replace( txt, match, replacement, options );
			return txt;
		}

		#region Virtual Properties
		public virtual string Text
		{
			get { return string.Empty; }
			set { ; }
		}

		public virtual string BaseDir
		{
			set
			{
				m_baseDir = value;
				if ( !m_baseDir.EndsWith( "/" ) )
					m_baseDir += "/";
			}
		}
		public virtual string StyleSheet
		{
			get { return string.Empty; }
			set { ;	}
		}
		public virtual bool UsesHTML
		{
			get { return false; }
		}
		public virtual bool UsesBBCode
		{
			get { return false; }
		}
		#endregion
	}


	public class TextEditor : ForumEditor
	{
		protected System.Web.UI.HtmlControls.HtmlTextArea m_textCtl;

		protected override void OnInit( EventArgs e )
		{
			Load += new EventHandler( Editor_Load );

			m_textCtl = new HtmlTextArea();

			m_textCtl.ID = "edit";
            m_textCtl.Attributes.Add("style", "width:100%;height:100%");
            m_textCtl.Rows = 25;
			Controls.Add( m_textCtl );

			/*
			m_textCtl = new TextBox();
			m_textCtl.ID = "edit";
			m_textCtl.Height = Unit.Percentage(100);
			m_textCtl.Width = Unit.Percentage(99);
			m_textCtl.TextMode = TextBoxMode.MultiLine;
			Controls.Add( m_textCtl );
			 */

			base.OnInit( e );
		}

		protected virtual void Editor_Load( object sender, EventArgs e )
		{
			if ( this.Visible )
			{
				Page.ClientScript.RegisterClientScriptBlock( Page.GetType(), "yafeditorjs", string.Format( "<script language='javascript' src='{0}'></script>", ResolveUrl( "yafEditor/yafEditor.js" ) ) );

				Page.ClientScript.RegisterClientScriptBlock( Page.GetType(), "createyafeditor",
					"\n<script language='javascript'>\n" +
					"var " + SafeID + "=new yafEditor('" + SafeID + "');\n" +
					"function setStyle(style,option) {\n" +
					"	" + SafeID + ".FormatText(style,option);\n" +
					"}\n" + "</script>" );

				RegisterSmilieyScript();
			}
		}

		protected virtual void RegisterSmilieyScript()
		{
			Page.ClientScript.RegisterClientScriptBlock( Page.GetType(), "insertsmiley",
				"<script language='javascript'>\n" +
				"function insertsmiley(code) {\n" +
				"	" + SafeID + ".InsertSmiley(code);\n" +
				"}\n" +
				"</script>\n" );
		}

		public override string Text
		{
			get
			{
				return m_textCtl.InnerText;
			}
			set
			{
				m_textCtl.InnerText = value;
			}
		}

		public string SafeID
		{
			get { return m_textCtl.ClientID.Replace( "$", "_" ); }
		}

		public override bool UsesHTML
		{
			get { return false; }
		}
		public override bool UsesBBCode
		{
			get { return false; }
		}
	}

	/// <summary>
	/// The same as the TextEditor except it adds BBCode support. Used for QuickReply
	/// functionality.
	/// </summary>
	public class BasicBBCodeEditor : TextEditor
	{
		protected override void OnInit( EventArgs e )
		{
			base.OnInit( e );
		}

		protected override void Editor_Load( object sender, EventArgs e )
		{
			base.Editor_Load( sender, e );
		}

		#region Properties

		public override bool UsesBBCode
		{
			get { return true; }
		}
		#endregion
	}

	public class BBCodeEditor : TextEditor
	{
		private void RenderButton( HtmlTextWriter writer, string id, string cmd, string title, string image )
		{
			//writer.WriteLine("		<td><img id='{1}_{4}' onload='Button_Load(this)' src='{0}' width='21' height='20' alt='{2}' title='{2}' onclick=\"{1}.{3}\"></td><td>&nbsp;</td>",ResolveUrl(image),SafeID,title,cmd,id);
			writer.WriteLine( "<img id='{1}_{4}' onload='Button_Load(this)' src='{0}' width='21' height='20' alt='{2}' title='{2}' onclick=\"setStyle('{4}','')\">", ResolveUrl( image ), SafeID, title, cmd, id );
		}

		protected override void Render( HtmlTextWriter writer )
		{
			writer.WriteLine( "<table border='0' cellpadding='0' cellspacing='2' width='100%' height='300'>" );
			writer.WriteLine( "<tr><td valign='top'>" );
			writer.WriteLine( "	<table border='0' cellpadding='1' cellspacing='2' id='bbcodeFeatures'>" );
			writer.WriteLine( "	<tr><td valign='middle'>" );

			RenderButton( writer, "bold", "FormatText('bold','')", "Bold", "yafEditor/bold.gif" );
			RenderButton( writer, "italic", "FormatText('italic','')", "Italic", "yafEditor/italic.gif" );
			RenderButton( writer, "underline", "FormatText('underline','')", "Underline", "yafEditor/underline.gif" );

			writer.WriteLine( "&nbsp;" );

			RenderButton( writer, "quote", "FormatText('quote','')", "Quote", "yafEditor/quote.gif" );
			RenderButton( writer, "code", "FormatText('code','')", "Code", "yafEditor/code.gif" );
			RenderButton( writer, "img", "FormatText('img','')", "Image", "yafEditor/image.gif" );
			RenderButton( writer, "createlink", "FormatText('createlink','')", "Create Link", "yafEditor/link.gif" );

			writer.WriteLine( "&nbsp;" );

			RenderButton( writer, "justifyleft", "FormatText('justifyleft','')", "Left", "yafEditor/justifyleft.gif" );
			RenderButton( writer, "justifycenter", "FormatText('justifycenter','')", "Center", "yafEditor/justifycenter.gif" );
			RenderButton( writer, "justifyright", "FormatText('justifyright','')", "Right", "yafEditor/justifyright.gif" );

			writer.WriteLine( "	</td></tr>" );
			writer.WriteLine( "	<tr><td valign='middle'>" );

			writer.WriteLine( "Font color:" );
			writer.WriteLine( "<select onchange=\"if(this.value!='') setStyle('color',this.value); this.value=''\">", SafeID );
			writer.WriteLine( "<option value=\"\">Default</option>" );

			string [] Colors = { "Dark Red", "Red", "Orange", "Brown", "Yellow", "Green", "Olive", "Cyan", "Blue", "Dark Blue", "Indigo", "Violet", "White", "Black" };
			foreach ( string color in Colors )
			{
				string tValue = color.Replace( " ", "" ).ToLower();
				writer.WriteLine( string.Format( "<option style=\"color:{0}\" value=\"{0}\">{1}</option>", tValue, color ) );
			}

			writer.WriteLine( "</select>" );

			writer.WriteLine( "Font size:" );
			writer.WriteLine( "<select onchange=\"if(this.value!='') setStyle('fontsize',this.value); this.value=''\">", SafeID );
			writer.WriteLine( "<option value=\"1\">1</option>" );
			writer.WriteLine( "<option value=\"2\">2</option>" );
			writer.WriteLine( "<option value=\"3\">3</option>" );
			writer.WriteLine( "<option value=\"4\">4</option>" );
			writer.WriteLine( "<option selected=\"selected\" value=\"5\">Default</option>" );
			writer.WriteLine( "<option value=\"6\">6</option>" );
			writer.WriteLine( "<option value=\"7\">7</option>" );
			writer.WriteLine( "<option value=\"8\">8</option>" );
			writer.WriteLine( "<option value=\"9\">9</option>" );
			writer.WriteLine( "</select>" );

			writer.WriteLine( "	</td></tr>" );
			writer.WriteLine( "	</table>" );
			writer.WriteLine( "</td></tr><tr><td height='99%'>" );
			base.Render( writer );
			writer.WriteLine( "</td></tr></table>" );
		}

		protected override void OnInit( EventArgs e )
		{

			base.OnInit( e );
		}

		protected override void Editor_Load( object sender, EventArgs e )
		{
			base.Editor_Load( sender, e );
		}

		#region Properties

		public override bool UsesBBCode
		{
			get { return true; }
		}
		#endregion
	}


	public class RichClassEditor : ForumEditor
	{
		protected bool bInit;
		protected Type typEditor;
		protected System.Web.UI.Control objEditor;
		protected string FStyleSheet;

		public RichClassEditor()
		{
			bInit = false;
			FStyleSheet = string.Empty;
			objEditor = null;
			typEditor = null;
		}

		public RichClassEditor( string ClassBinStr )
		{
			bInit = false;
			FStyleSheet = string.Empty;
			objEditor = null;

			try
			{
				typEditor = Type.GetType( ClassBinStr, true );
			}
			catch ( Exception x )
			{
#if DEBUG
				throw new Exception( "Unable to load editor class/dll: " + ClassBinStr );
#endif
				DB.eventlog_create( null, this.GetType().ToString(), x, EventLogTypes.Error );
			}
		}

		protected bool InitEditorObject()
		{
			try
			{
				if ( !bInit && typEditor != null )
				{
					// create instance of main class
					objEditor = ( System.Web.UI.Control ) Activator.CreateInstance( typEditor );
					bInit = true;
				}
			}
			catch ( Exception )
			{
				// dll is not accessible
				return false;
			}
			return true;
		}

		protected Type GetInterfaceInAssembly( Assembly cAssembly, string ClassName )
		{
			Type [] types = cAssembly.GetTypes();
			foreach ( Type typ in types )
			{
				// dynamically create or activate(if exist) object
				if ( typ.FullName == ClassName )
				{
					return typ;
				}
			}
			return null;
		}

		#region Properties

		protected string SafeID
		{
			get
			{
				if ( bInit )
				{
					return objEditor.ClientID.Replace( "$", "_" );
				}
				return string.Empty;
			}
		}

		public bool IsInitialized
		{
			get { return bInit; }
		}

		public override string StyleSheet
		{
			get { return FStyleSheet; }
			set { FStyleSheet = value; }
		}

		public override bool UsesHTML
		{
			get { return true; }
		}
		public override bool UsesBBCode
		{
			get { return false; }
		}
		#endregion

	}

	public class FCKEditorV2 : RichClassEditor
	{
		public FCKEditorV2()
			: base( "FredCK.FCKeditorV2.FCKeditor,FredCK.FCKeditorV2" )
		{
			InitEditorObject();
		}

		protected override void OnInit( EventArgs e )
		{
			if ( bInit )
			{
				Load += new EventHandler( Editor_Load );
				PropertyInfo pInfo = typEditor.GetProperty( "ID" );
				pInfo.SetValue( objEditor, "edit", null );
				Controls.Add( objEditor );
			}
			base.OnInit( e );
		}

		protected virtual void Editor_Load( object sender, EventArgs e )
		{
			if ( bInit && objEditor.Visible )
			{
				PropertyInfo pInfo;
				pInfo = typEditor.GetProperty( "BasePath" );
				pInfo.SetValue( objEditor, ResolveUrl( "FCKEditorV2/" ), null );

				pInfo = typEditor.GetProperty( "Height" );
				pInfo.SetValue( objEditor, Unit.Pixel( 300 ), null );

				Page.ClientScript.RegisterClientScriptBlock( Page.GetType(), "fckeditorjs", string.Format( "<script language='javascript' src='{0}'></script>", ResolveUrl( "FCKEditorV2/FCKEditor.js" ) ) );

				RegisterSmilieyScript();
			}
		}

		protected virtual void RegisterSmilieyScript()
		{
			// insert smiliey code -- can't get this working with FireFox!
			Page.ClientScript.RegisterClientScriptBlock( Page.GetType(), "insertsmiley",
				"<script language='javascript'>\n" +
				"function insertsmiley(code) {\n" +
				"	window.frames['" + SafeID + "___Frame'].FCK.InsertHtml(code);\n" +
				"}\n" +
				"</script>\n" );
		}

		#region Properties
		public override string Text
		{
			get
			{
				if ( bInit )
				{
					PropertyInfo pInfo = typEditor.GetProperty( "Value" );
					return Convert.ToString( pInfo.GetValue( objEditor, null ) );
				}
				else return string.Empty;
			}
			set
			{
				if ( bInit )
				{
					PropertyInfo pInfo = typEditor.GetProperty( "Value" );
					pInfo.SetValue( objEditor, value, null );
				}
			}
		}
		#endregion
	}


	public class FCKEditorV1 : RichClassEditor
	{
		public FCKEditorV1()
			: base( "FredCK.FCKeditor,FredCK.FCKeditor" )
		{
			InitEditorObject();
		}

		protected override void OnInit( EventArgs e )
		{
			if ( bInit )
			{
				Load += new EventHandler( Editor_Load );
				PropertyInfo pInfo = typEditor.GetProperty( "ID" );
				pInfo.SetValue( objEditor, "edit", null );
				Controls.Add( objEditor );
			}
			base.OnInit( e );
		}

		protected virtual void Editor_Load( object sender, EventArgs e )
		{
			if ( bInit && objEditor.Visible )
			{
				PropertyInfo pInfo;
				pInfo = typEditor.GetProperty( "BasePath" );
				pInfo.SetValue( objEditor, ResolveUrl( "FCKEditorV1/" ), null );

				Page.ClientScript.RegisterClientScriptBlock( Page.GetType(), "fckeditorjs", string.Format( "<script language='javascript' src='{0}'></script>", ResolveUrl( "FCKEditorV1/FCKEditor.js" ) ) );
			}
		}

		#region Properties
		public override string Text
		{
			get
			{
				if ( bInit )
				{
					PropertyInfo pInfo = typEditor.GetProperty( "Value" );
					return Convert.ToString( pInfo.GetValue( objEditor, null ) );
				}
				else return string.Empty;
			}
			set
			{
				if ( bInit )
				{
					PropertyInfo pInfo = typEditor.GetProperty( "Value" );
					pInfo.SetValue( objEditor, value, null );
				}
			}
		}
		#endregion
	}


	public class FreeTextBoxEditor : RichClassEditor
	{
		public FreeTextBoxEditor()
			: base( "FreeTextBoxControls.FreeTextBox,FreeTextBox" )
		{
			InitEditorObject();
		}

		protected override void OnInit( EventArgs e )
		{
			if ( bInit )
			{
				Load += new EventHandler( Editor_Load );
				PropertyInfo pInfo = typEditor.GetProperty( "ID" );
				pInfo.SetValue( objEditor, "edit", null );
				pInfo = typEditor.GetProperty( "AutoGenerateToolbarsFromString" );
				pInfo.SetValue( objEditor, true, null );
				pInfo = typEditor.GetProperty( "ToolbarLayout" );
				pInfo.SetValue( objEditor, "FontFacesMenu,FontSizesMenu,FontForeColorsMenu;Bold,Italic,Underline|Cut,Copy,Paste,Delete,Undo,Redo|CreateLink,Unlink|JustifyLeft,JustifyRight,JustifyCenter,JustifyFull;BulletedList,NumberedList,Indent,Outdent", null );
				Controls.Add( objEditor );
			}
			base.OnInit( e );
		}

		protected virtual void Editor_Load( object sender, EventArgs e )
		{
			if ( bInit && objEditor.Visible )
			{
				PropertyInfo pInfo;
				pInfo = typEditor.GetProperty( "SupportFolder" );
				pInfo.SetValue( objEditor, ResolveUrl( "FreeTextBox/" ), null );
				pInfo = typEditor.GetProperty( "Width" );
				pInfo.SetValue( objEditor, Unit.Percentage( 100 ), null );
				pInfo = typEditor.GetProperty( "DesignModeCss" );
				pInfo.SetValue( objEditor, StyleSheet, null );
				//pInfo = typEditor.GetProperty("EnableHtmlMode");
				//pInfo.SetValue(objEditor,false,null);

				RegisterSmilieyScript();
			}
		}

		protected virtual void RegisterSmilieyScript()
		{
			Page.ClientScript.RegisterClientScriptBlock( Page.GetType(), "insertsmiley",
				"<script language='javascript'>\n" +
				"function insertsmiley(code){" +
				"FTB_InsertText('" + SafeID + "',code);" +
				"}\n" +
				"</script>\n" );
		}

		#region Properties
		public override string Text
		{
			get
			{
				if ( bInit )
				{
					PropertyInfo pInfo = typEditor.GetProperty( "Text" );
					return Convert.ToString( pInfo.GetValue( objEditor, null ) );
				}
				else return string.Empty;
			}
			set
			{
				if ( bInit )
				{
					PropertyInfo pInfo = typEditor.GetProperty( "Text" );
					pInfo.SetValue( objEditor, value, null );
				}
			}
		}
		#endregion
	}

	public class FreeTextBoxEditorv3 : FreeTextBoxEditor
	{
		public FreeTextBoxEditorv3()
			: base( )
		{
		}

		protected override void RegisterSmilieyScript()
		{
			Page.ClientScript.RegisterClientScriptBlock( Page.GetType(), "insertsmiley",
				"<script language='javascript'>\n" +
				"function insertsmiley(code){" +
				"FTB_API['" + SafeID + "'].InsertHtml(code);" +
				"}\n" +
				"</script>\n" );
		}
	}

	/// <summary>
	/// This class provides a way to
	/// get information on the editors. All 
	/// functions and variables are static.
	/// </summary>
	public class EditorHelper
	{
		public enum EditorType
		{
			etText = 0,
			etBBCode = 1,
			etFCKv2 = 2,
			etFreeTextBox = 3,
			etFCKv1 = 4,
			etBasicBBCode = 5,
			etFreeTextBoxv3 = 6
		}

		public static int EditorCount = 7;

		public static string [] EditorTypeText =
		{
			"Text Editor",
			"BBCode Editor",
			"FCK Editor v2 (HTML)",
			"FreeTextBox v2 (HTML)",
			"FCK Editor v1.6 (HTML)",
			"Basic BBCode Editor",
			"FreeTextBox v3 (HTML)"
		};

		public static ForumEditor CreateEditorFromType( int Value )
		{
			if ( Value < EditorCount )
			{
				return CreateEditorFromType( ( EditorType ) Value );
			}
			return null;
		}

		public static ForumEditor CreateEditorFromType( EditorType etValue )
		{
			switch ( etValue )
			{
				case EditorType.etText: return new TextEditor();
				case EditorType.etBBCode: return new BBCodeEditor();
				case EditorType.etFCKv2: return new FCKEditorV2();
				case EditorType.etFreeTextBox: return new FreeTextBoxEditor();
				case EditorType.etFCKv1: return new FCKEditorV1();
				case EditorType.etBasicBBCode: return new BasicBBCodeEditor();
				case EditorType.etFreeTextBoxv3: return new FreeTextBoxEditorv3();
			}

			return null;
		}

		public static DataTable GetEditorsTable()
		{
			using ( DataTable dt = new DataTable( "TimeZone" ) )
			{
				dt.Columns.Add( "Value", Type.GetType( "System.Int32" ) );
				dt.Columns.Add( "Name", Type.GetType( "System.String" ) );

				for ( int i = 0; i < EditorCount; i++ )
				{
					dt.Rows.Add( new object [] { i, EditorTypeText [i] } );
				}
				return dt;
			}
		}
	}
}