/*
* Copyright (c) 2010 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:  
*   CpDestinationGroup contains all destination UI items as well as 
*   items for uncategorized access points and adding new destinations.
*/

// System includes
#include <QDir>
#include <QPluginLoader>
#include <QStringList>
#include <HbDataForm>
#include <HbDataFormModel>
#include <HbDataFormViewItem>
#include <HbParameterLengthLimiter>
#include <cpbasesettingview.h>
#include <cpitemdatahelper.h>
#include <cpsettingformentryitemdataimpl.h>
#include <cpsettingformitemdata.h>
#include <cmmanager_shim.h>
#include <cmdestination_shim.h>
#include <cmconnectionmethod_shim.h>
#include <cmmanagerdefines_shim.h>

// User includes
#include "cpdestinationgroup.h"
#include "cpdestinationentryitem.h"
#include "cpadddestinationentryitemdata.h"
#include "OstTraceDefinitions.h"
#ifdef OST_TRACE_COMPILER_IN_USE
#include "cpdestinationgroupTraces.h"
#endif

/*!
    \class  CpDestinationGroup
    \brief  This class contains all data items representing destinations
    in commsdat. 
*/

// External function prototypes

// Local constants

// ======== LOCAL FUNCTIONS ========

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

/*!
    
    Constructor.
    
    @param[in] itemDataHelper Helper for connecting signals and slots.
 */
CpDestinationGroup::CpDestinationGroup(CpItemDataHelper &itemDataHelper) :
    CpSettingFormItemData(HbDataFormModelItem::GroupItem, 
        hbTrId("txt_occ_subhead_destinations_access_points")),
   mItemDataHelper(&itemDataHelper),
   mUncategorisedShown(false)
{
    OstTraceFunctionEntry0(CPDESTINATIONGROUP_CPDESTINATIONGROUP_ENTRY);
    mCmManager = new CmManagerShim();
    mBearerPlugins = new QList<CpBearerApPluginInterface *>();
    this->loadBearerPlugins();
    
    QList<QSharedPointer<CmDestinationShim> > destinationList;
    fetchDestinations(destinationList);

    // Create Destination list
    for (int i = 0; i < destinationList.count(); i++) {
        QString iapCount = 
			getDestinationAdditionalText(destinationList.at(i)->connectionMethodCount());
        
        // Create new destination entry
        CpDestinationEntryItemData *destDataItem;
        destDataItem = new CpDestinationEntryItemData(itemDataHelper);
        destDataItem->setContentWidgetData(QString("text"), destinationList.at(i)->name());
        destDataItem->setContentWidgetData(QString("additionalText"),iapCount);
        destDataItem->setDestinationId(destinationList.at(i)->id());
        destDataItem->setDestinationName(destinationList.at(i)->name());
        bool connected = connect(destDataItem, 
                                 SIGNAL(destChanged()), 
                                 this, 
                                 SLOT(updateDestinationInformation()));
        Q_ASSERT(connected);
        this->appendChild(destDataItem);
    }
    
    // Add "Uncategorised Iaps" button
    createUncategorisedDestination();
    
    // "Add Destination" button
    CpSettingFormEntryItemData *addDest = new CpAddDestinationEntryItemData(itemDataHelper, this);
    addDest->setContentWidgetData(QString("text"), hbTrId("txt_occ_button_add_destination"));
    this->appendChild(addDest);
    OstTraceFunctionExit0(CPDESTINATIONGROUP_CPDESTINATIONGROUP_EXIT);
}

/*!
    Destructor
 */
CpDestinationGroup::~CpDestinationGroup()
{
    OstTraceFunctionEntry0(DUP1_CPDESTINATIONGROUP_CPDESTINATIONGROUP_ENTRY);
    delete mBearerPlugins;
    delete mCmManager;
    OstTraceFunctionExit0(DUP1_CPDESTINATIONGROUP_CPDESTINATIONGROUP_EXIT);
}

/*!
    addDestination() creates new destination item to Destinations group item.
    The new destination is shown in the UI immediately.
 */
void CpDestinationGroup::addDestination(const QString &dest, int destId)
{
    OstTraceFunctionEntry0(CPDESTINATIONGROUP_ADDDESTINATION_ENTRY);
    QString iapCount = getDestinationAdditionalText(0);
    
    // Create UI item for new destination
    CpDestinationEntryItemData *destDataItem;
    destDataItem = new CpDestinationEntryItemData(*mItemDataHelper);
    destDataItem->setContentWidgetData(QString("text"), dest);
    destDataItem->setContentWidgetData(QString("additionalText"), iapCount);
    destDataItem->setDestinationId(destId);
    destDataItem->setDestinationName(dest);
    connect(destDataItem, SIGNAL(destChanged()), this, SLOT(updateDestinationInformation()));
    
    // Insert Child to correct position
    QList<QSharedPointer<CmDestinationShim> > destinationList;
    fetchDestinations(destinationList);
    insertChild(destinationList.count() - 1, destDataItem);
    OstTraceFunctionExit0(CPDESTINATIONGROUP_ADDDESTINATION_EXIT);
}

/*!
    Deletes destination from commsdat and removes it from UI.
 */
void CpDestinationGroup::deleteDestination(int destId)
{
    OstTraceFunctionEntry0(CPDESTINATIONGROUP_DELETEDESTINATION_ENTRY);
    // "Add Destination" child is removed from count (childCount() -1)
    for (int i = 0; i < this->childCount() - 1; i++) { 
        CpDestinationEntryItemData  *destDataItem = 
            static_cast<CpDestinationEntryItemData*>(this->childAt(i));

        if (destDataItem->destinationId() == destId) {
            int index = this->indexOf(destDataItem);
            this->removeChild(index);
            
            if (!mUncategorisedShown) {
            // Return "Uncategorised" item to UI if necessary
            createUncategorisedDestination();
            }
        }
    }
    OstTraceFunctionExit0(CPDESTINATIONGROUP_DELETEDESTINATION_EXIT);
}

/*!
    Finds correct access point settings implementation according to
    access point bearer type.
    
    \return Returns pointer to CpBearerApPluginInterface which implements
            access point settins.
 */
CpBearerApPluginInterface *CpDestinationGroup::findBearerPlugin(int apId)
{
    OstTraceFunctionEntry0(CPDESTINATIONGROUP_FINDBEARERPLUGIN_ENTRY);
    CpBearerApPluginInterface *retVal = NULL;
    try {
        CmConnectionMethodShim *cm = mCmManager->connectionMethod(apId);
        int apBearerType = cm->getIntAttribute(CMManagerShim::CmBearerType);
    
        for (int i = 0; i < mBearerPlugins->count(); i++) {
            if (mBearerPlugins->at(i)->bearerType() == apBearerType) {
                retVal = mBearerPlugins->at(i);
                break;
            }
        }
        delete cm;
    }
    catch (const std::exception&) {
        OstTrace0(TRACE_NORMAL, CPDESTINATIONGROUP_FINDBEARERPLUGIN, "CpDestinationGroup::findBearerPlugin: Exception caught");
        // Let return value be NULL.
    }
    OstTraceFunctionExit0(CPDESTINATIONGROUP_FINDBEARERPLUGIN_EXIT);
    return retVal;
}

/*!
    Updates all destination group items' destinations' information. 
    (Name and access point count)
 */
void CpDestinationGroup::updateDestinationInformation()
{
	OstTraceFunctionEntry0(CPDESTINATIONGROUP_UPDATEDESTINATIONINFORMATION_ENTRY);
	int apCount = 0;
	// "Add Destination" child is removed from count (childCount() -1)
    for (int i = 0; i < childCount() - 1; i++) {
        CpDestinationEntryItemData  *destDataItem = 
                static_cast<CpDestinationEntryItemData*>(this->childAt(i));
        
        if (destDataItem->destinationId() == 0) {
            // Uncategrised Iaps
	        QList<uint> apList;
            mCmManager->connectionMethod(apList);
            if (apList.count() == 0) {
                // delete empty uncategorised IAPs destination
                int index = this->indexOf(destDataItem);
                this->removeChild(index);
                mUncategorisedShown = false;
                continue;
            }
            apCount = apList.count();  
        } else {
            CmDestinationShim *destination;
            destination = mCmManager->destination(destDataItem->destinationId());
            apCount = destination->connectionMethodCount();
            delete destination;
        }

        QString iapCount = getDestinationAdditionalText(apCount);
        destDataItem->setContentWidgetData(QString("additionalText"), iapCount);
        destDataItem->setContentWidgetData(QString("text"), destDataItem->destinationName());
    }
    OstTraceFunctionExit0(CPDESTINATIONGROUP_UPDATEDESTINATIONINFORMATION_EXIT);
}

/*!
    Creates item for uncategorized access points to destination group item
    if there is any.
 */
void CpDestinationGroup::createUncategorisedDestination()
{
    OstTraceFunctionEntry0(CPDESTINATIONGROUP_CREATEUNCATEGORISEDDESTINATION_ENTRY);
    QList<uint> apList;
    mCmManager->connectionMethod(apList);
    if (apList.count() > 0) {
        // Create new destination entry
        CpDestinationEntryItemData *destDataItem;
        destDataItem = new CpDestinationEntryItemData(*mItemDataHelper);
        destDataItem->setContentWidgetData(QString("text"), hbTrId("txt_occ_dblist_uncategorized"));
        QString iapCount = getDestinationAdditionalText(apList.count());
        destDataItem->setContentWidgetData(QString("additionalText"),iapCount);
        destDataItem->setDestinationId(0);
        destDataItem->setDestinationName(hbTrId("txt_occ_dblist_uncategorized"));
        bool connected = connect(
            destDataItem, 
            SIGNAL(destChanged()), 
            this, 
            SLOT(updateDestinationInformation()));
        Q_ASSERT(connected);
        QList<QSharedPointer<CmDestinationShim> > destinationList;
        fetchDestinations(destinationList);
        
        insertChild(destinationList.count(), destDataItem);
        mUncategorisedShown = true;
    }
    OstTraceFunctionExit0(CPDESTINATIONGROUP_CREATEUNCATEGORISEDDESTINATION_EXIT);
}

/*!
    Searches all destinations from commsdat. List of representing 
    CmDestinationShim * items returned on completion.
 */
void CpDestinationGroup::fetchDestinations(
    QList<QSharedPointer<CmDestinationShim> > &destinationList)
{
    OstTraceFunctionEntry0(CPDESTINATIONGROUP_FETCHDESTINATIONS_ENTRY);
    try {
        QList<uint> destArray;
        mCmManager->allDestinations(destArray);
    
        for (int i = 0; i < destArray.count(); i++) {
            CmDestinationShim *destination;
            destination = mCmManager->destination(destArray[i]);
            if (!destination->isHidden()) {
                destinationList.append(QSharedPointer<CmDestinationShim>(destination));
            }
        }
    } catch (const std::exception&) {
        OstTrace0(TRACE_NORMAL, CPDESTINATIONGROUP_FETCHDESTINATIONS, "CpDestinationGroup::fetchDestinations: exception caught, Reading destinations");
    }
    OstTraceFunctionExit0(CPDESTINATIONGROUP_FETCHDESTINATIONS_EXIT);
}

/*!
    Searches all bearer plugins from fixed location and loads them.
    
    \sa findBearerPlugin()
 */
void CpDestinationGroup::loadBearerPlugins()
{
    OstTraceFunctionEntry0(CPDESTINATIONGROUP_LOADBEARERPLUGINS_ENTRY);
    // Load bearer plugins
    QDir pluginsDir("\\resource\\qt\\plugins\\controlpanel\\bearerap");
    foreach (QString fileName, pluginsDir.entryList(QDir::Files)) {
        
        QPluginLoader loader(pluginsDir.absoluteFilePath(fileName));
        CpBearerApPluginInterface *plugin = 
                qobject_cast<CpBearerApPluginInterface *>(loader.instance());
        if (plugin) {
            mBearerPlugins->append(plugin);
        }
    } 
    OstTraceFunctionExit0(CPDESTINATIONGROUP_LOADBEARERPLUGINS_EXIT);
}

/*!
    Helper function to be used in localisation.
    
    \return Returns correct localized QString according to access point count.
 */
QString CpDestinationGroup::getDestinationAdditionalText(int iapCount)
{
    OstTraceFunctionEntry0(CPDESTINATIONGROUP_GETDESTINATIONADDITIONALTEXT_ENTRY);
    QString result = "";
    if (iapCount > 0) {
        result = hbTrId("txt_occ_dblist_internet_val_ln_access_points", iapCount);
    } else {
        result = hbTrId("txt_occ_dblist_internet_val_no_access_points");
    }
    OstTrace0(TRACE_FLOW, CPDESTINATIONGROUP_GETDESTINATIONADDITIONALTEXT_EXIT, "Exit");
    return result;
}