/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

* 

* Description:

*

*/

using System;

using System.Text;

using System.IO;

using System.Collections.Generic;

using System.Reflection;

using SymbianDebugLib.Engine;

using CrashItemLib.Crash;

using CrashItemLib.PluginAPI;

using CrashItemLib.Engine.Sources;

namespace CrashItemLib.PluginAPI

{

    public class CFFFileList

    {

        #region Constructors

        internal CFFFileList()

        {

        }

        internal CFFFileList( DirectoryInfo aDir )

            : this( aDir, SearchOption.TopDirectoryOnly )

        {

        }

        internal CFFFileList( DirectoryInfo aDir, SearchOption aSearchOption )

		{

            BuildLists( aDir, aSearchOption );

        }

		#endregion

        #region API

        public void Clear()

        {

            iDictionary.Clear();

            iFiles.Clear();

        }

        public bool Contains( string aFileName )

        {

            string key = Key( aFileName );

            return iDictionary.ContainsKey( key );

        }

        public bool Contains( FileInfo aFile )

        {

            return Contains( aFile.FullName );

        }

        public void Remove( string aFileName )

        {

            string key = Key( aFileName );

            if ( iDictionary.ContainsKey( key ) )

            {

                FileInfo file = iDictionary[ key ];

                iFiles.Remove( file );

                iDictionary.Remove( key );

            }

        }

        public void Remove( FileInfo aFile )

        {

            Remove( aFile.FullName );

        }

        public FileInfo Dequeue()

        {

            System.Diagnostics.Debug.Assert( Count > 0 );

            FileInfo ret = this[ 0 ];

            //

            iFiles.RemoveAt( 0 );

            iDictionary.Remove( Key( ret ) );

            //

            return ret;

        }

        #endregion

        #region Properties

        public int Count

        {

            get

            {

                System.Diagnostics.Debug.Assert( iFiles.Count == iDictionary.Count );

                return iFiles.Count;

            }

        }

        public bool IsEmpty

        {

            get { return Count == 0; }

        }

        public FileInfo this[ int aIndex ]

        {

            get { return iFiles[ aIndex ]; }

        }

        #endregion

        #region Internal methods

        private string Key( FileInfo aFile )

        {

            return Key( aFile.FullName );

        }

        private string Key( string aFileName )

        {

            return aFileName.ToUpper();

        }

        private void BuildLists( DirectoryInfo aDirectory, SearchOption aSearchOption )

        {

            Clear();

            //

            FileInfo[] files = aDirectory.GetFiles( "*.*", aSearchOption );

            iFiles.AddRange( files );

            //

            iDictionary = new Dictionary<string, FileInfo>();

            foreach ( FileInfo file in files )

            {

                string key = file.FullName.ToUpper();

                if ( iDictionary.ContainsKey( key ) )

                {

                    iDictionary.Add( key, file );

                }

            }

        }

        #endregion

        #region From System.Object

        #endregion

        #region Data members

        private List<FileInfo> iFiles = new List<FileInfo>();

        private Dictionary<string, FileInfo> iDictionary = new Dictionary<string, FileInfo>();

		#endregion

    }

}