/*

* Copyright (c) 2008-2008 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:  Music Player Action Handler Plugin

*

*/

#include <liwvariant.h>                 // TLiwVariant

#include <apgcli.h>                     // RApaLsSession, TApaAppInfo

#include <apacmdln.h>                   // CApaCommandLine

#include <apgtask.h>                    // TApaTaskList

#include <mpxlog.h>                     // MPX_DEBUG

#include <mpxparameter.h>               // CMPXParameter

#include <mpxplaybackutility.h>         // MMPXPlaybackUtility

#include <mpxconstants.h>               // KAppUidMusicPlayerX

#include <mpxmusicplayerviewplugin.hrh> // KMPXPluginTypePlaybackUid

#include <AknTaskList.h>                // CAknTaskList

#include <mpxcommonuihelper.h>

#include <mpxcollectionhelperfactory.h>

#include "musicplayeractionhandler.h"

#include <mpxcollectionpath.h>

const TInt KPlayerMusicPlayerParameterGranularity = 50;

const TUid  KMusicPlayerAppUid = { 0x102072C3 };

// RProperty key to identify the case when Music Player launching

// in the background

const TInt KMPXLaunchingOnBackground( 100 );

//map values

_LIT( KActionPlaybackCommand , "PlaybackCommand" );

_LIT( KactionMessageToMusicPlayer, "MessageToMusicPlayer" );

_LIT( KGoToNowPlaying, "GoToNowPlaying" );

_LIT( KGoToLastPlayed, "GoToLastPlayed" );

_LIT( KGoToLastPlayedMinimized, "GoToLastPlayedMinimized" );

_LIT( KGoToMusicLibrary, "GoToMusicLibrary" );

_LIT( KGoToAlbumView, "GoToAlbumView" );

//map keys

_LIT8( KType, "type" );

_LIT8( KCommand, "command" );

_LIT8( KMessage, "message" );

// ======== MEMBER FUNCTIONS ========

// ---------------------------------------------------------------------------

// Symbian 2nd phase constructor can leave.

// ---------------------------------------------------------------------------

//

void CMusicPlayerActionHandler::ConstructL()

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::ConstructL()");

    //iPlaybackUtility = MMPXPlaybackUtility::UtilityL( KPbModeActivePlayer );

    //iPlaybackUtility = MMPXPlaybackUtility::NewL( KMusicPlayerAppUid);

    MPX_DEBUG1("<--CMusicPlayerActionHandler::ConstructL()");

    }

// ---------------------------------------------------------------------------

// Two-phased constructor.

// ---------------------------------------------------------------------------

//

CMusicPlayerActionHandler* CMusicPlayerActionHandler::NewL()

    {

    CMusicPlayerActionHandler* self = CMusicPlayerActionHandler::NewLC();

    CleanupStack::Pop( self );

    return self;

    }

// ---------------------------------------------------------------------------

// Two-phased constructor.

// ---------------------------------------------------------------------------

//

CMusicPlayerActionHandler* CMusicPlayerActionHandler::NewLC()

    {

    CMusicPlayerActionHandler* self = new( ELeave ) CMusicPlayerActionHandler;

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// ---------------------------------------------------------------------------

// destructor

// ---------------------------------------------------------------------------

//

CMusicPlayerActionHandler::~CMusicPlayerActionHandler()

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::~CMusicPlayerActionHandler()");

    if ( iPlaybackUtility )

        {

        iPlaybackUtility->Close();

        }

    MPX_DEBUG1("<--CMusicPlayerActionHandler::~CMusicPlayerActionHandler()");

    }

// ---------------------------------------------------------------------------

// Executes Playback command on current player

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::ExecutePlaybackCommandL(const CLiwMap* aMap)

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::ExecutePlaybackCommandL()");

    TInt errCode;

    TLiwVariant variant;

    variant.PushL();

    errCode = ExtractVariantL( aMap, variant, KCommand );

    if ( errCode == KErrNone )

        {

        TMPXPlaybackCommand Command;

        Command = static_cast<TMPXPlaybackCommand>( variant.AsTInt32() );

        }

    CleanupStack::PopAndDestroy( &variant);

    MPX_DEBUG1("<--CMusicPlayerActionHandler::ExecutePlaybackCommandL()");

    return errCode;

    }

// ---------------------------------------------------------------------------

// Sends a message to music player

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::ExecuteMessageToMusicPlayerL(

        const CLiwMap* aMap )

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::"

            "ExecuteMessageToMusicPlayerL()");

    TInt errCode;

    RBuf msg;

    CleanupClosePushL( msg );

    errCode = ExtractDesL( aMap, msg, KMessage );

    if ( errCode == KErrNone )

        {

        if ( ! msg.CompareF( KGoToNowPlaying ) )

            {

            errCode = GoToNowPlayingL();

            }

        else if ( ! msg.CompareF( KGoToLastPlayed ) )

            {

            errCode = GoToLastPlayedL( EFalse );

            }

        else if ( ! msg.CompareF( KGoToLastPlayedMinimized ) )

            {

            errCode = GoToLastPlayedL( ETrue );

            }

        else if ( ! msg.CompareF( KGoToMusicLibrary ) )

            {

            errCode = GoToMusicLibraryL();

            }  

        else if ( ! msg.CompareF( KGoToAlbumView ) )

        	{

            errCode = GoToAlbumViewL();

            } 

        }

    CleanupStack::PopAndDestroy( &msg );

    MPX_DEBUG1("<--CMusicPlayerActionHandler::"

            "ExecuteMessageToMusicPlayerL()");

    return errCode;

    }

// ---------------------------------------------------------------------------

// Opens musicplayer in library view, even if it is already open and playing.

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::GoToMusicLibraryL()

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::GoToMusicLibraryL()");

    //Launch player

    RWsSession wsSession;

    User::LeaveIfError( wsSession.Connect() );

    CAknTaskList *taskList = CAknTaskList::NewL( wsSession );

    TApaTask task = taskList->FindRootApp( KAppUidMusicPlayerX );

    delete taskList;

    CMPXParameter* param = new ( ELeave ) CMPXParameter();

    CleanupStack::PushL( param );

    param->iType.iUid = KMPXPluginTypeCollectionUid;

    param->iCmdForward = EMPXCmdFwdNone;

    MMPXCollectionUiHelper* collectionHelper = CMPXCollectionHelperFactory::NewCollectionUiHelperL();

    CMPXCollectionPath* path = collectionHelper->MusicMenuPathL();

	path->AppendL(3); // Albums

    if (path)

        {

        param->iCollectionPath = path;

        param->iPathType = EMPXTypeCollectionPath;

        }

    collectionHelper->Close();

    CBufBase* buffer =

            CBufFlat::NewL( KPlayerMusicPlayerParameterGranularity );

    CleanupStack::PushL( buffer );

    RBufWriteStream writeStream( *buffer );

    CleanupClosePushL( writeStream );

    param->ExternalizeL( writeStream );

    writeStream.CommitL();

    buffer->Compress();

    CleanupStack::PopAndDestroy( &writeStream );

    if ( task.Exists() )

        {

//        task.SendMessage( KAppUidMusicPlayerX, buffer->Ptr( 0 ));

        wsSession.SendMessageToWindowGroup( task.WgId(), KAppUidMusicPlayerX,

                    buffer->Ptr( 0 ) );

        }

    else        //Application needs to be launched. The first view is library view.

        {

        // Launch Music Player Application

        RApaLsSession   appArcSession;

        _LIT(KEmpty,"");

        User::LeaveIfError(appArcSession.Connect());    // connect to AppArc server

        TThreadId id;

        appArcSession.StartDocument( KEmpty, KAppUidMusicPlayerX, id );

        appArcSession.Close();                                

        }

    CleanupStack::PopAndDestroy( buffer );

    CleanupStack::PopAndDestroy( param );

    wsSession.Close();

    MPX_DEBUG1("<--CMusicPlayerActionHandler::GoToMusicLibraryL()");

    return KErrNone;

    }

// ---------------------------------------------------------------------------

// Opens musicplayer in Album and Artist view, even if it is already open and playing.

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::GoToAlbumViewL()

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::GoToAlbumViewL()");

    //Launch player

    RWsSession wsSession;

    User::LeaveIfError( wsSession.Connect() );

    CAknTaskList *taskList = CAknTaskList::NewL( wsSession );

    TApaTask task = taskList->FindRootApp( KAppUidMusicPlayerX );

    delete taskList;

    CMPXParameter* param = new ( ELeave ) CMPXParameter();

    CleanupStack::PushL( param );

    param->iType.iUid = KMPXPluginTypeCollectionUid;

    param->iCmdForward = EMPXCmdFwdNone;

    MMPXCollectionUiHelper* collectionHelper = CMPXCollectionHelperFactory::NewCollectionUiHelperL();

    CMPXCollectionPath* path = collectionHelper->MusicMenuPathL();

    path->AppendL(3); // Albums

    if (path)

        {

        param->iCollectionPath = path;

        param->iPathType = EMPXTypeCollectionPath;

        }

    collectionHelper->Close();

    CBufBase* buffer =

            CBufFlat::NewL( KPlayerMusicPlayerParameterGranularity );

    CleanupStack::PushL( buffer );

    RBufWriteStream writeStream( *buffer );

    CleanupClosePushL( writeStream );

    param->ExternalizeL( writeStream );

    writeStream.CommitL();

    buffer->Compress();

    CleanupStack::PopAndDestroy( &writeStream );

    if ( task.Exists() )

        {

//        task.SendMessage( KAppUidMusicPlayerX, buffer->Ptr( 0 ));

        wsSession.SendMessageToWindowGroup( task.WgId(), KAppUidMusicPlayerX,

                    buffer->Ptr( 0 ) );

        }

    else        //Application needs to be launched. The first view is library view.

        {

        // Launch Music Player Application

        RApaLsSession   appArcSession;

        _LIT(KEmpty,"");

        User::LeaveIfError(appArcSession.Connect());    // connect to AppArc server

        TThreadId id;

        appArcSession.StartDocument( KEmpty, KAppUidMusicPlayerX, id );

        appArcSession.Close();                                

        }

    CleanupStack::PopAndDestroy( buffer );

    CleanupStack::PopAndDestroy( param );

    wsSession.Close();

    MPX_DEBUG1("<--CMusicPlayerActionHandler::GoToAlbumViewL()");

    return KErrNone;

    }

// ---------------------------------------------------------------------------

// Opens musicplayer, if it is already open and playing it goes to nowplaying.

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::GoToNowPlayingL()

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::GoToNowPlayingL()");

    //Launch player

    RWsSession wsSession;

    User::LeaveIfError( wsSession.Connect() );

    CAknTaskList *taskList = CAknTaskList::NewL( wsSession );

    TApaTask task = taskList->FindRootApp( KAppUidMusicPlayerX );

    delete taskList;

    CMPXParameter* param = new ( ELeave ) CMPXParameter();

    CleanupStack::PushL( param );

    param->iType.iUid = KMPXPluginTypePlaybackUid;

    param->iCmdForward = EMPXCmdFwdNone;

    CBufBase* buffer =

            CBufFlat::NewL( KPlayerMusicPlayerParameterGranularity );

    CleanupStack::PushL( buffer );

    RBufWriteStream writeStream( *buffer );

    CleanupClosePushL( writeStream );

    param->ExternalizeL( writeStream );

    writeStream.CommitL();

    buffer->Compress();

    CleanupStack::PopAndDestroy( &writeStream );

    if ( task.Exists() )

        {

        wsSession.SendMessageToWindowGroup( task.WgId(), KAppUidMusicPlayerX,

                    buffer->Ptr( 0 ) );

        }

    else

        {

        RApaLsSession ls;

        CleanupClosePushL( ls );

        User::LeaveIfError( ls.Connect() );

        TApaAppInfo appInfo;

        User::LeaveIfError( ls.GetAppInfo( appInfo, KAppUidMusicPlayerX ) );

        CApaCommandLine* apaCommandLine = CApaCommandLine::NewLC();

        apaCommandLine->SetExecutableNameL( appInfo.iFullName );

        apaCommandLine->SetTailEndL( buffer->Ptr( 0 ) );

        User::LeaveIfError( ls.StartApp( *apaCommandLine ) );

        CleanupStack::PopAndDestroy(); // apaCommandLine

        CleanupStack::PopAndDestroy(); // ls

        }

    CleanupStack::PopAndDestroy( buffer );

    CleanupStack::PopAndDestroy( param );

    wsSession.Close();

    MPX_DEBUG1("<--CMusicPlayerActionHandler::GoToNowPlayingL()");

    return KErrNone;

    }

// ---------------------------------------------------------------------------

// Opens Stand alone MP and goes to now playing, it will display last played

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::GoToLastPlayedL( TBool aMinimized )

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::GoToLastPlayed()");

    //Launch player

    RWsSession wsSession;

    User::LeaveIfError( wsSession.Connect() );

    CAknTaskList *taskList = CAknTaskList::NewL( wsSession );

    TApaTask task = taskList->FindRootApp( KAppUidMusicPlayerX );

    delete taskList;

    CMPXParameter* param = new ( ELeave ) CMPXParameter();

    CleanupStack::PushL( param );

    param->iType.iUid = KMPXPluginTypeLastPlayedUid;//KMPXPluginTypePlaybackUid;

    param->iCmdForward = EMPXCmdFwdNone;

    CBufBase* buffer =

            CBufFlat::NewL( KPlayerMusicPlayerParameterGranularity );

    CleanupStack::PushL( buffer );

    RBufWriteStream writeStream( *buffer );

    CleanupClosePushL( writeStream );

    param->ExternalizeL( writeStream );

    writeStream.CommitL();

    buffer->Compress();

    CleanupStack::PopAndDestroy( &writeStream );

    if ( task.Exists() )

        {

        wsSession.SendMessageToWindowGroup( task.WgId(), KAppUidMusicPlayerX,

                    buffer->Ptr( 0 ) );

        if (!aMinimized)

            {

            task.BringToForeground();

            }

        }

    else

        {

        RApaLsSession ls;

        CleanupClosePushL( ls );

        User::LeaveIfError( ls.Connect() );

        TApaAppInfo appInfo;

        User::LeaveIfError( ls.GetAppInfo( appInfo, KAppUidMusicPlayerX ) );

        CApaCommandLine* apaCommandLine = CApaCommandLine::NewLC();

        if (aMinimized)

            {

            apaCommandLine->SetCommandL(EApaCommandBackground);

            TInt err( RProperty::Define(

                KAppUidMusicPlayerX, KMPXLaunchingOnBackground, RProperty::EInt ) );

            MPX_DEBUG2( "CMusicPlayerActionHandler::GoToLastPlayed() RProperty define err = %d", err );

            if ( err == KErrNone || err == KErrAlreadyExists )

                {

                err = RProperty::Set( KAppUidMusicPlayerX,

                            KMPXLaunchingOnBackground,

                            ETrue );

                MPX_DEBUG2( "CMusicPlayerActionHandler::GoToLastPlayed() RProperty set to true err = %d", err );

                }

            }

        apaCommandLine->SetExecutableNameL( appInfo.iFullName );

        apaCommandLine->SetTailEndL( buffer->Ptr( 0 ) );

        User::LeaveIfError( ls.StartApp( *apaCommandLine ) );

        CleanupStack::PopAndDestroy(); // apaCommandLine

        CleanupStack::PopAndDestroy(); // ls

        if ( aMinimized )

            {

            TInt err = RProperty::Set( KAppUidMusicPlayerX,

                        KMPXLaunchingOnBackground,

                        EFalse );

            MPX_DEBUG2( "CMusicPlayerActionHandler::GoToLastPlayed() RProperty set to false err = %d", err );

            }

        }

    CleanupStack::PopAndDestroy( buffer );

    CleanupStack::PopAndDestroy( param );

    wsSession.Close();

    MPX_DEBUG1("<--CMusicPlayerActionHandler::GoToLastPlayed()");

    return KErrNone;

    }

// ---------------------------------------------------------------------------

// Extracts a descriptor

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::ExtractDesL( const CLiwMap* aMap,

        RBuf& aString, const TDesC8& aMapName )

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::ExtractDesL()");

    TInt errCode( KErrArgument );

    TLiwVariant variant;

    variant.PushL();

    TPtrC tempString( KNullDesC );

    if ( aMap->FindL( aMapName, variant) )

        {

        variant.Get( tempString );

        aString.ReAllocL( tempString.Length() );

        aString.Append( tempString );

        errCode = KErrNone;

        }

    CleanupStack::PopAndDestroy( &variant );

    MPX_DEBUG1("<--CMusicPlayerActionHandler::ExtractDesL()");

    return errCode;

    }

// ---------------------------------------------------------------------------

// Extract variant

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::ExtractVariantL( const CLiwMap* aMap,

        TLiwVariant& aVariant, const TDesC8& aMapName )

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::ExtractVariantL()");

    TInt errCode( KErrNone );

    if ( ! aMap->FindL( aMapName, aVariant ) )

        {

        errCode = KErrArgument;

        }

    MPX_DEBUG1("<--CMusicPlayerActionHandler::ExtractVariantL()");

    return errCode;

    }

// ---------------------------------------------------------------------------

// From CAHPlugin

// Executes provided action

// ---------------------------------------------------------------------------

//

TInt CMusicPlayerActionHandler::ExecuteActionL( const CLiwMap* aMap )

    {

    MPX_DEBUG1("-->CMusicPlayerActionHandler::ExecuteActionL()");

    TInt errCode;

    RBuf type;

    CleanupClosePushL( type );

    errCode = ExtractDesL( aMap, type, KType );

    if ( errCode == KErrNone )

        {

        if ( ! type.CompareF( KActionPlaybackCommand ) )

            {

            errCode = ExecutePlaybackCommandL( aMap );

            }

        else

            if ( ! type.CompareF( KactionMessageToMusicPlayer ) )

                {

                errCode = ExecuteMessageToMusicPlayerL( aMap );

                }

        }

    CleanupStack::PopAndDestroy( &type );

    MPX_DEBUG1("<--CMusicPlayerActionHandler::ExecuteActionL()");

    return errCode;

    }