/*

* 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 the License "Symbian Foundation License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.symbianfoundation.org/legal/sfl-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 SymbianUtils.PluginManager;

using SymbianDebugLib.Engine;

using CrashItemLib.Crash;

using CrashItemLib.Engine;

namespace CrashItemLib.PluginAPI

{

    public class CFFPluginRegistry : CFFDataProvider, IEnumerable<CFFPlugin>

	{

		#region Constructors

        public CFFPluginRegistry( CIEngine aEngine )

		{

            iEngine = aEngine;

            LoadPlugins();

		}

		#endregion

        #region API

        public string GetSupportedCrashFileTypes()

        {

            StringBuilder ret = new StringBuilder();

            // First get a list of all supported extensions

            List<CFFFileSpecification> initialList = new List<CFFFileSpecification>();

            foreach ( CFFPlugin plugin in this )

            {

                plugin.GetSupportedFileTypes( initialList );

            }

            // Identify duplicate entries and filter them out

            Dictionary<string, CFFFileSpecification> finalList = new Dictionary<string, CFFFileSpecification>();

            foreach ( CFFFileSpecification entry in initialList )

            {

                if ( !finalList.ContainsKey( entry.Description ) )

                {

                    finalList.Add( entry.Description, entry );

                }

            }

            // Convert each entry into dialog-like format list specification.

            foreach ( KeyValuePair<string, CFFFileSpecification> kvp in finalList )

            {

                CFFFileSpecification spec = kvp.Value;

                //

                ret.AppendFormat( "{0} ({1})|{2}", spec.Description, spec.Extensions, spec.Extensions );

                ret.Append( "|" );

            }

            // Remove last trailing pipe

            if ( ret.Length > 0 )

            {

                ret.Remove( ret.Length - 1, 1 );

            }

            string finalVal = ret.ToString();

            return finalVal;

        }

        public CFFSourceAndConfidence[] GetHandlers( FileInfo aFile, CFFFileList aOtherFiles )

        {

            List<CFFSourceAndConfidence> ret = new List<CFFSourceAndConfidence>();

            //

            foreach ( CFFPlugin plugin in iPlugins )

            {

                try

                {

                    CFFSourceAndConfidence conf = plugin.GetConfidence( aFile, aOtherFiles );

                    //

                    if ( conf.IsSupported )

                    {

                        ret.Add( conf );

                    }

                }

                catch ( Exception e )

                {

                    iEngine.Trace( "CFFPrimerRegistry.GetHandlers() - aFile: {0}, message: {1}, stack: {2}", aFile.FullName, e.Message, e.StackTrace );

                }

            }

            //

            return ret.ToArray();

        }

        #endregion

        #region Properties

        public int Count

        {

            get { return iPlugins.Count; }

        }

        public CFFPlugin this[ int aIndex ]

        {

            get { return iPlugins[ aIndex ]; }

        }

        #endregion

        #region Internal methods

        private void LoadPlugins()

        {

            object[] parameters = new object[ 1 ];

            parameters[ 0 ] = this;

            //

            iPlugins.Load( parameters );

        }

        #endregion

        #region From CFFDataProvider

        public override CIEngine Engine

        {

            get { return iEngine; }

        }

        #endregion

        #region From IEnumerable<CFFPlugin>

        public IEnumerator<CFFPlugin> GetEnumerator()

        {

            return iPlugins.GetEnumerator();

        }

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()

        {

            return iPlugins.GetEnumerator();

        }

        #endregion

        #region Data members

        private readonly CIEngine iEngine;

        private PluginManager<CFFPlugin> iPlugins = new PluginManager<CFFPlugin>();

		#endregion

    }

}