/*

* 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 SymbianUtils;

using SymbianUtils.Settings;

using SymbianUtils.Tracer;

using SymbianUtils.PluginManager;

using SymbianDebugLib.Engine;

using CrashAnalyserEngine.Plugins;

using CrashAnalyserEngine.Interfaces;

namespace CrashAnalyserEngine.Engine

{

	public class CAEngine : DisposableObject, IEnumerable<CAPlugin>, ITracer

	{

		#region Constructors

        public CAEngine( string[] aCommandLineArgs )

		{

            iDebugEngine = new DbgEngine( this );

            iCommandLineArgs = aCommandLineArgs;

            // Create settings

            iSettings = new XmlSettings( "CASettings.xml" );

            iSettings.Restore();

		}

		#endregion

		#region API

        #endregion

		#region Properties

        public XmlSettings Settings

        {

            get { return iSettings; }

        }

        public string[] CommandLineArguments

        {

            get { return iCommandLineArgs; }

        }

        /// <summary>

        /// The main debug engine instance is owned by the engine and is shared

        /// amongst all that need it.

        /// </summary>

        public DbgEngine DebugEngine

        {

            get { return iDebugEngine; }

        }

        public IEngineUIManager UIManager

        {

            get { return iUIManager; }

            set

            {

                iUIManager = value;

                // Now we can create the sub-engines

                LoadPlugins();

            }

        }

        public CAPlugin this[ string aName ]

        {

            get

            {

                CAPlugin ret = null;

                //

                foreach ( CAPlugin plugin in iPlugins )

                {

                    string name = plugin.Name.ToUpper();

                    if ( name == aName.ToUpper() )

                    {

                        ret = plugin;

                        break;

                    }

                }

                //

                return ret;

            }

        }

        #endregion

        #region Internal methods

        private void LoadPlugins()

        {

            object[] parameters = new object[ 1 ];

            parameters[ 0 ] = this;

            //

            iPlugins.Load( parameters );

            //

            NotifyAllLoaded();

        }

        private void NotifyAllLoaded()

        {

            foreach ( CAPlugin plugin in iPlugins )

            {

                plugin.AllPluginsLoaded();

            }

        }

        #endregion

        #region From IEnumerable<CAPlugin> 

        public IEnumerator<CAPlugin> GetEnumerator()

        {

            return iPlugins.GetEnumerator();

        }

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

        {

            return iPlugins.GetEnumerator();

        }

        #endregion

        #region From ITracer

        public void Trace( string aMessage )

        {

            if ( iUIManager != null )

            {

                iUIManager.UITrace( aMessage );

            }

        }

        public void Trace( string aFormat, params object[] aParams )

        {

            Trace( string.Format( aFormat, aParams ) );

        }

        #endregion

        #region From DisposableObject

        protected override void CleanupManagedResources()

        {

            try

            {

                base.CleanupManagedResources();

            }

            finally

            {

                if ( iPlugins != null )

                {

                    iPlugins.Unload();

                    iPlugins = null;

                }

                //

                iDebugEngine.Dispose();

            }

        }

        #endregion

        #region Data members

        private readonly XmlSettings iSettings;

        private readonly string[] iCommandLineArgs;

        private readonly DbgEngine iDebugEngine;

        private IEngineUIManager iUIManager = null;

        private PluginManager<CAPlugin> iPlugins = new PluginManager<CAPlugin>(1);

		#endregion

    }

}