/*

* 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:   ?Description

*

*/

#include <glxmediamodel.h>

#include <hbicon.h>

#include <qimage.h>

#include <glxmodelparm.h>

#include <QCache>

#include <QDebug>

#include <glxmlwrapper.h>

#include"glxdrmutilitywrapper.h"

#include <glxfiltergeneraldefs.h>

#include <glximageviewermanager.h>

//#define GLXPERFORMANCE_LOG  

#include <glxperformancemacro.h>

#include "glxicondefs.h" //Contains the icon names/Ids

#include "glxcollectionpluginall.hrh"

#include "glxviewids.h"

#define DELTA_IMAGE 5

#define INITIAL_POPULATE_IMAGE_COUNT 30

GlxMediaModel::GlxMediaModel(GlxModelParm & modelParm)

{

	qDebug("GlxMediaModel::GlxMediaModel");

	thumbnailPopulatedFlag = modelParm.collection() == KGlxCollectionPluginAllImplementationUid ? false : true;

	mPaintPage = modelParm.collection() == KGlxCollectionPluginAllImplementationUid ? true : false;

	mMLWrapper->setContextMode( modelParm.contextMode() );

	mContextMode = modelParm.contextMode( ) ; 

	mDRMUtilityWrapper = new GlxDRMUtilityWrapper();

	int err = connect(mMLWrapper, SIGNAL(updateItem(int, GlxTBContextType)), this, SLOT(itemUpdated(int, GlxTBContextType)));

	qDebug("updateItem() connection status %d", err);

	err = connect(mMLWrapper, SIGNAL(itemCorrupted(int)), this, SLOT(itemCorrupted(int)));

	qDebug("itemCorrupted() connection status %d", err);

	err = connect(mMLWrapper, SIGNAL(insertItems(int, int)), this, SLOT(itemsAdded(int, int)));

	qDebug("updateItem() connection status %d", err);

	err = connect(mMLWrapper, SIGNAL(removeItems(int, int)), this, SLOT(itemsRemoved(int, int)));

	qDebug("updateItem() connection status %d", err);

	err = connect(this, SIGNAL(iconAvailable(int, HbIcon*, GlxTBContextType)), this, SLOT(updateItemIcon(int, HbIcon*, GlxTBContextType)));

	qDebug("iconAvailable() connection status %d", err);

	err = connect( mMLWrapper, SIGNAL(updateAlbumTitle(QString)), this, SLOT(albumTitleUpdated(QString)));

	qDebug("updateAlbumTitle() connection status %d", err);

	err = connect(mMLWrapper, SIGNAL(populated()), this, SLOT(modelpopulated()));

	err = connect(mMLWrapper, SIGNAL(updateDetails()), this, SLOT(updateDetailItems()));

	itemIconCache.setMaxCost(20);  //Changed While Doing Media Wall

	itemFsIconCache.setMaxCost(5);

	itemExternalIconCache.setMaxCost(0);

	m_DefaultIcon = new HbIcon( GLXICON_DEFAULT );

	m_CorruptIcon = new HbIcon( GLXICON_CORRUPT );

	mExternalItems = NULL;

	externalDataCount = 0;

	mFocusIndex = -1;

	mSubState = -1;

	mTempVisibleWindowIndex = 0;

}

GlxMediaModel::~GlxMediaModel()

{

    //itemadded.clear();

	qDebug("GlxMediaModel::~GlxMediaModel");

	itemIconCache.clear();

	itemFsIconCache.clear();

	delete m_DefaultIcon;

	m_DefaultIcon = NULL;

	delete m_CorruptIcon;

	m_CorruptIcon = NULL;

	clearExternalItems();

    delete mMLWrapper;

	delete mDRMUtilityWrapper;

}

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

//setContextMode

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

void GlxMediaModel::setContextMode(GlxContextMode contextMode)

{

    if(contextMode == GlxContextComment)

        {

           mMLWrapper->setContextMode(contextMode);

        }

    else 

        {

      if(mContextMode != contextMode)	{

		itemFsIconCache.clear();

		mMLWrapper->setContextMode(contextMode);

		mContextMode = contextMode;

		if ( mContextMode == GlxContextLsGrid || mContextMode == GlxContextPtGrid ) {

            itemIconCache.clear();

            //emit dataChanged( index( 0, 0), index( rowCount() - 1, 0) );  // Not Needed for HgWidget

       }

	  }

     }

}

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

//removeContextMode

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

void GlxMediaModel::removeContextMode(GlxContextMode contextMode)

    {

     mMLWrapper->removeContextMode(contextMode);

    }

//to add external data to the model

void GlxMediaModel::addExternalItems(GlxExternalData* externalItems)

{

	externalDataCount = externalItems->count();

	beginInsertRows(QModelIndex(), 0, externalDataCount);

	mExternalItems = externalItems;

	itemExternalIconCache.setMaxCost(15);

	endInsertRows();

	setFocusIndex(index(0,0));

}

/*

*for removing all external image data from the model. 

*/

void GlxMediaModel::clearExternalItems()

{

	if(externalDataCount) {

	    beginRemoveRows(QModelIndex(), 0, externalDataCount);	

        if(mExternalItems) {

		delete mExternalItems;

		mExternalItems = NULL;

		externalDataCount = 0;

        }

        itemExternalIconCache.clear();

        endRemoveRows();

    }

}

int GlxMediaModel::rowCount(const QModelIndex &parent ) const

{

	Q_UNUSED(parent);

	qDebug("GlxMediaModel::rowCount %d", mMLWrapper->getItemCount());

    return (mMLWrapper->getItemCount() + externalDataCount);

}

int GlxMediaModel::columnCount(const QModelIndex &parent ) const

{

    Q_UNUSED(parent);

    return 1;

}

QModelIndex GlxMediaModel::parent(const QModelIndex &child) const

{

    Q_UNUSED(child);

    //returns always invalid model index

    return QModelIndex();

}

//todo refactor this whole function ... too many return statements are not good

QVariant GlxMediaModel::data( const QModelIndex &index, int role ) const

{

    if (role == GlxViewTitle) {

        return mMLWrapper->retrieveViewTitle();

    }

    if(role == GlxPopulated) {

        return mMLWrapper->IsPopulated();

    }

    if ( role == GlxSubStateRole ) {

        return mSubState;

    }

    if ( role == GlxHgVisibilityRole ) {

        return TRUE;

    }

    if ( role == Qt::DisplayRole ) {

        return QVariant();

    }

    if (role == GlxPaintPageFlag) {

       return mPaintPage;

    }

    if ( role == GlxDefaultImage ) {

        if(!m_DefaultIcon->isNull()) {

            // this image Creation is Slow. 

            // But what to do, Q class's Does not undersatnd our Localised File names

            return m_DefaultIcon->pixmap().toImage().convertToFormat(QImage::Format_ARGB32_Premultiplied);

        }

        else {

            return QImage();

        }            

    }

    HbIcon* itemIcon = NULL;

    QImage itemImage;

    int itemIndex = index.row();

    qDebug("GlxMediaModel::data buffer concept index %d role %d", index.row(), role);

    if ((!index.isValid()) || (index.row() > rowCount()-1)) {

         return QVariant();

    }

    //retrieve Data from Media List		

    if ( role == Qt::DecorationRole ) {

        itemIcon = GetGridIconItem(itemIndex,GlxTBContextGrid);

        if( itemIcon == NULL || itemIcon->isNull() ) {

            itemIcon = getCorruptDefaultIcon( index );

        }

        return *itemIcon;

    }

    if (role == GlxQImageSmall) {

        return mMLWrapper->retrieveItemImage(itemIndex, GlxTBContextGrid);

    }

    if (role == GlxFsImageRole){

        if(mContextMode == GlxContextLsFs){

            itemIcon = GetFsIconItem(itemIndex,GlxTBContextLsFs);

        }

        else if (mContextMode == GlxContextPtFs){

            itemIcon = GetFsIconItem(itemIndex,GlxTBContextPtFs);

        }

        if ( itemIcon == NULL ) {  

            HbIcon* tempIcon = GetGridIconItem( itemIndex, GlxTBContextGrid );

            if (tempIcon && !tempIcon->isNull()) {

                qDebug("GlxMediaModel::scaling thumbnail");

                QPixmap tempPixmap = tempIcon->qicon().pixmap(128, 128);

                QSize itemSize = mMLWrapper->retrieveItemDimension(itemIndex);

                QSize sz = ( mContextMode == GlxContextLsFs ) ? QSize ( 640, 360) : QSize ( 360, 640 );

                if( !( ( itemSize.width() < sz.width() ) && ( itemSize.height() < sz.height() ) ) ) {

                    itemSize.scale(sz, Qt::KeepAspectRatio);

                }

                tempPixmap = tempPixmap.scaled(itemSize, Qt::IgnoreAspectRatio );

                HbIcon tmp = HbIcon( QIcon(tempPixmap)) ;

				if(!tmp.isNull()){

					return tmp;

				}

            }

        }

        if ( itemIcon == NULL || itemIcon->isNull() ) {

            itemIcon = getCorruptDefaultIcon( index ) ;

        }

        return *itemIcon;

    }

    if (role == GlxQImageLarge) {

        if(mContextMode == GlxContextLsFs) {

            itemImage = mMLWrapper->retrieveItemImage(itemIndex, GlxTBContextLsFs);

        }

        else {

            itemImage = mMLWrapper->retrieveItemImage(itemIndex, GlxTBContextPtFs);

        }

        if(!itemImage.isNull()) {

            return itemImage;

        }

        else {

            itemImage =  mMLWrapper->retrieveItemImage(itemIndex, GlxTBContextGrid);

            if (!itemImage.isNull()) {

                QSize sz = ( mContextMode == GlxContextLsFs ) ? QSize ( 640, 360) : QSize ( 360, 640 );

                itemImage = itemImage.scaled(sz,Qt::KeepAspectRatio); 

            }

            return itemImage;

        }

    }

    if (role == GlxVisualWindowIndex) {

        return mMLWrapper->getVisibleWindowIndex();

    }

    QModelIndex idx;

    if ( GlxFocusIndexRole == role ) {

        idx = getFocusIndex();

        return idx.row();

    }

    if(role == GlxUriRole) {

        return (mMLWrapper->retrieveItemUri(itemIndex));

    }

	 if (role == GlxImageTitle) {

           return mMLWrapper->retrieveListTitle(itemIndex);

    }

    if(role == GlxDimensionsRole) {

        return (mMLWrapper->retrieveItemDimension(itemIndex));

    }

    if(role == GlxDateRole ) {

    	return (mMLWrapper->retrieveItemDate(itemIndex));

    }

    if (role == GlxFrameCount) {

        return (mMLWrapper->retrieveItemFrameCount(itemIndex));

    }

    if (role == GlxHdmiBitmap) {

        return mMLWrapper->RetrieveBitmap(itemIndex);

    }

    if ( role == GlxImageCorruptRole ) {

        return mMLWrapper->isCorruptedImage( itemIndex );

    }

    if (role == GlxTimeRole) {

        return mMLWrapper->retrieveItemTime(itemIndex);

    }

    if (role == GlxSizeRole) {

        return mMLWrapper->retrieveItemSize(itemIndex);

     }

     if (role == GlxDescRole) {

        return mMLWrapper->retrieveListDesc(itemIndex);

     }

    return QVariant();

}

//GetGridIconItem

HbIcon* GlxMediaModel::GetGridIconItem(int itemIndex, GlxTBContextType tbContextType) const

{

	HbIcon* itemIcon = itemIconCache[itemIndex];  //Initialize icon from the Cache will be NULL if Item not present

	if (!itemIcon)

	{

		itemIcon =  mMLWrapper->retrieveItemIcon(itemIndex, tbContextType);

		if(itemIcon){

            emit iconAvailable(itemIndex,itemIcon, GlxTBContextGrid);

		}

		itemIcon = itemIconCache[itemIndex];

	}

	return itemIcon;

}

HbIcon* GlxMediaModel::GetFsIconItem(int itemIndex, GlxTBContextType tbContextType) const

{

	HbIcon* itemIcon = NULL;  //Initialize icon from the Cache will be NULL if Item not present

    bool drmProtected = mMLWrapper->IsDrmProtected(itemIndex);

    if(drmProtected)

        {

        QString imagePath = mMLWrapper->retrieveItemUri(itemIndex);

		bool rightValid = mMLWrapper->IsDrmValid(itemIndex);

        if(!rightValid)

            {

            //show error note here

            if(itemIndex == mFocusIndex )

                mDRMUtilityWrapper->ShowRightsInfo(imagePath);

            return itemIcon;

            }

        else

            {

            //consumeDrmRights(imagePath);

            mDRMUtilityWrapper->ConsumeRights(imagePath);

			bool rightValid = mDRMUtilityWrapper->ItemRightsValidityCheck(imagePath,true);

			mMLWrapper->setDrmValid(itemIndex,rightValid);

            }

        }

    itemIcon = itemFsIconCache[itemIndex];  //Initialize icon from the Cache will be NULL if Item not present

    if (!itemIcon) {

		itemIcon =  mMLWrapper->retrieveItemIcon(itemIndex, tbContextType);

		if(itemIcon){

            emit iconAvailable(itemIndex,itemIcon, tbContextType);

		}

		itemIcon = itemFsIconCache[itemIndex];

	}

	return itemIcon;

}

HbIcon* GlxMediaModel::GetExternalIconItem(int itemIndex,GlxTBContextType tbContextType) const

{

	//todo add asserts here as the cache and the array is not preinitialized

	HbIcon* itemIcon = itemExternalIconCache[itemIndex];  //Initialize icon from the Cache will be NULL if Item not present

	if (!itemIcon) {

		QPixmap* itemPixmap = mExternalItems->at(itemIndex).image;

		itemIcon = new HbIcon(QIcon(*itemPixmap));

		emit iconAvailable(itemIndex,itemIcon, tbContextType);

	}

	return itemIcon;

}

void GlxMediaModel::itemUpdated(int mlIndex,GlxTBContextType tbContextType  )

{

	qDebug("GlxMediaModel::itemUpdated %d", mlIndex);

	//clear the grid and FS cache if they have any icons with them for that index

	if( tbContextType == GlxTBContextGrid ) {

	    if ( !thumbnailPopulatedFlag ) {

	        thumbnailPopulatedCheck( mlIndex ); 

	    }		

	    itemIconCache.remove(mlIndex);

	}

	if(tbContextType == GlxTBContextLsFs || tbContextType == GlxTBContextPtFs) {

		itemFsIconCache.remove(mlIndex);

	}

	emit dataChanged( index( mlIndex , 0 ), index( mlIndex, 0 ) );	

}

void GlxMediaModel::itemCorrupted(int itemIndex)

{

	qDebug("GlxMediaModel::itemCorrupted %d", itemIndex);

    if ( !thumbnailPopulatedFlag ) {

        thumbnailPopulatedCheck( itemIndex ); 

    }

	emit dataChanged( index( itemIndex , 0 ), index( itemIndex, 0 ) );	

}

void GlxMediaModel::modelpopulated()

{

    if ( mTempVisibleWindowIndex!=-1) {

        //Set the visible Window index only ff the index stored in the activity manager is not out of range

        if( rowCount() > mTempVisibleWindowIndex && mTempVisibleWindowIndex > 0 ) {

            mMLWrapper->setVisibleWindowIndex(mTempVisibleWindowIndex);

        }

        else {

            mMLWrapper->setVisibleWindowIndex(0);

        }

        mTempVisibleWindowIndex = -1;

    }

    emit populated();

}

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

//updateDetailItems

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

void GlxMediaModel::updateDetailItems()

{

    qDebug("GlxMediaModel::updateDetailItems");

    emit updateDetailsView();

}

void GlxMediaModel::itemsAdded(int startIndex, int endIndex)

{

	qDebug("GlxMediaModel::itemsAdded %d %d", startIndex, endIndex);

	mFocusIndex = -1;

	//emit rowsAboutToBeInserted(index(startIndex,0), startIndex, endIndex );

	beginInsertRows(QModelIndex(), startIndex+externalDataCount, endIndex+externalDataCount);

    //itemadded.insert(startIndex,(endIndex - startIndex),NULL );

	itemIconCache.clear();

	itemFsIconCache.clear();

    endInsertRows();

	//emit rowsInserted(index(startIndex,0), startIndex, endIndex );

}

void GlxMediaModel::itemsRemoved(int startIndex, int endIndex)

{

	qDebug("GlxMediaModel::itemsRemoved %d %d", startIndex, endIndex);

	mFocusIndex = -1;

	//emit rowsAboutToBeRemoved(index(startIndex,0), startIndex, endIndex );

	beginRemoveRows(QModelIndex(), startIndex+externalDataCount, endIndex+externalDataCount);

	//itemadded.remove(startIndex,(endIndex - startIndex) );

	itemIconCache.clear();

	itemFsIconCache.clear();

	endRemoveRows();

	//emit rowsRemoved(index(startIndex,0), startIndex, endIndex );

}

void GlxMediaModel::updateItemIcon(int itemIndex, HbIcon* itemIcon, GlxTBContextType tbContextType)

{

	qDebug("GlxMediaModel::updateItemIcon %d", itemIndex);

	if(tbContextType == GlxTBContextGrid){

		itemIconCache.insert(itemIndex, itemIcon);

	}

	else if(tbContextType == GlxTBContextLsFs || tbContextType == GlxTBContextPtFs){

		itemFsIconCache.insert(itemIndex, itemIcon);

	}

	else if (tbContextType == GlxTBContextExternal){

		itemExternalIconCache.insert(itemIndex, itemIcon);	

	}

}

void GlxMediaModel::albumTitleUpdated(QString aTitle)

{

    emit albumTitleAvailable(aTitle);

}

void GlxMediaModel::setFocusIndex(const QModelIndex &index)