/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions are met:

*

* - Redistributions of source code must retain the above copyright notice,

*   this list of conditions and the following disclaimer.

* - Redistributions in binary form must reproduce the above copyright notice,

*   this list of conditions and the following disclaimer in the documentation

*   and/or other materials provided with the distribution.

* - Neither the name of Nokia Corporation nor the names of its contributors

*   may be used to endorse or promote products derived from this software

*   without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

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* POSSIBILITY OF SUCH DAMAGE.

* 

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

using System;

using System.Runtime.InteropServices;

using Microsoft.Office.Interop.Excel;

using SymbianExcelUtils;

namespace HeapComparisonLib.CSV.Comparers

{

    internal abstract class ComparerBase

	{

		#region Constructors & destructor

		protected ComparerBase( Worksheet aSheet, string aFileName1, string aFileName2 )

		{

			iWorksheet = aSheet;

			iFileName1 = aFileName1;

			iFileName2 = aFileName2;

		}

		#endregion

		#region API

		public abstract void PrepareWorksheetReadyForData();

		public abstract void FinaliseWorksheet();

        public abstract void Compare( CSVThread aOther, CSVThread aMaster );

		public virtual string DeltaFormula( int aIndex )

		{

			return string.Empty;

		}

		#endregion

		#region Internal Properties

		protected int Row

		{

			get { return iRowNumber; }

		}

		protected Worksheet Sheet

		{

			get { return iWorksheet; }

		}

		protected string FileName1

		{

			get { return iFileName1; }

		}

		protected string FileName2

		{

			get { return iFileName2; }

		}

		#endregion

		#region Internal methods

		protected void NextRow()

		{

			++iRowNumber;

		}

        protected void CompareAndWriteItems( CSVThread aItem1, long aItemVal1, CSVThread aItem2, long aItemVal2, int aColumn, int aGrowColour, int aShrinkColour )

		{

			// First write the values to the columns

			if	( !aItem1.IsDefault )

				Utils.SetValue( Row, aColumn   , Sheet, aItemVal1.ToString() );

			if	( !aItem2.IsDefault )

				Utils.SetValue( Row, aColumn + 1, Sheet, aItemVal2.ToString() );

			// Delta

			long delta = aItemVal1 - aItemVal2;

			Utils.SetValue( Row, aColumn + 2, Sheet, ( delta * -1).ToString() );

			// Colour code accordingly

			int colour = 0x000000; // black

			if	( aItemVal1 < aItemVal2 )

			{

				colour = aGrowColour; // 0x0000FF; // red

			}

			else if ( aItemVal1 > aItemVal2 )

			{

				colour = aShrinkColour; // 0x00FF00; // green

			}

			Utils.SetRangeFontColour( Row, aColumn + 2, Row, aColumn + 2, Sheet, colour );

		}

		#endregion

		#region Data members

		private readonly string iFileName1;

		private readonly string iFileName2;

		private readonly Worksheet iWorksheet;

		private int iRowNumber = 1;

		#endregion

	}

}