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#include "cntdisplaylabel.h"

#include <qtcontacts.h>

/*! 

 * Constructor

 */

CntDisplayLabel::CntDisplayLabel() :

m_nameOrder(CntOrderFirstLast)

{

#ifdef SYMBIAN_BACKEND_USE_SQLITE

    m_settings = new CntCenrep(KCntNameOrdering, *this);

    m_nameOrder = m_settings->getValue();

#endif

    setDisplayLabelDetails();

}

/*! 

 * Destructor

 */

CntDisplayLabel::~CntDisplayLabel()

{

#ifdef SYMBIAN_BACKEND_USE_SQLITE

    delete m_settings;

#endif

}

/*! 

 * Sets the fields that should be used for displaylabel

 * 

 * The order is defined in the QList of preferred options

 * Whereas the QPair includes the fields that should be used for 

 * the specific detail

 */

void CntDisplayLabel::setDisplayLabelDetails()

{

    //This will be variated in the future

    //adds the contact's details definition names + fields to be used for display name and filtering display label

    //Display label details

    //Contact

    //Preferred details

    m_contactDisplayLabelDetails.clear();

    m_groupDisplayLabelDetails.clear();

    QList<QPair<QLatin1String, QLatin1String> > contactPrefferedDisplayLabelDetails;

    QLatin1String firstLatin(QContactName::FieldFirstName);

    QLatin1String secondLatin(QContactName::FieldLastName);

#ifdef SYMBIAN_BACKEND_USE_SQLITE    

    if (m_nameOrder == CntOrderLastFirst || m_nameOrder == CntOrderLastCommaFirst) {

        firstLatin = QLatin1String(QContactName::FieldLastName);

        secondLatin = QLatin1String(QContactName::FieldFirstName);

    }

#endif

    contactPrefferedDisplayLabelDetails.append(qMakePair(QLatin1String(QContactName::DefinitionName), firstLatin));

    contactPrefferedDisplayLabelDetails.append(qMakePair(QLatin1String(QContactName::DefinitionName), secondLatin));

    m_contactDisplayLabelDetails.append(contactPrefferedDisplayLabelDetails);

    //if preferred details doesn't exist use these

    QList<QPair<QLatin1String, QLatin1String> > contactSecondaryDisplayLabelDetails;

    contactSecondaryDisplayLabelDetails.append(qMakePair(QLatin1String(QContactOrganization::DefinitionName), QLatin1String(QContactOrganization::FieldName)));

    m_contactDisplayLabelDetails.append(contactSecondaryDisplayLabelDetails);

    //Group

    QList<QPair<QLatin1String, QLatin1String> > preferredGroupDisplayLabelDetails;

    preferredGroupDisplayLabelDetails.append(qMakePair(QLatin1String(QContactName::DefinitionName), QLatin1String(QContactName::FieldCustomLabel)));

    m_groupDisplayLabelDetails.append(preferredGroupDisplayLabelDetails);

}

/*! 

 * Returns a synthesised display label of a contact

 * \a contact to read the data from .

 * \a error On return, contains the possible error.

 * \return synthesised display label 

 */

QString CntDisplayLabel::synthesizedDisplayLabel(const QContact& contact, QContactManager::Error* error)

{

    QString displayLabel;

    *error = QContactManager::NoError;

#ifdef SYMBIAN_BACKEND_USE_SQLITE

    int value = m_settings->getValue();

    if (value != -1 && value != m_nameOrder) {

        m_nameOrder = value;

        setDisplayLabelDetails();

    }

#endif

    //contact

    if(contact.type() == QContactType::TypeContact) {

        displayLabel = generateDisplayLabel(contact, m_contactDisplayLabelDetails);    

    }

    //group

    else if (contact.type() == QContactType::TypeGroup) {

        displayLabel = generateDisplayLabel(contact, m_groupDisplayLabelDetails);

    } 

    //invalid type

    else {

        *error = QContactManager::InvalidContactTypeError;

    }

    return displayLabel;

}

/*! 

 * Generate the display label

 * \a contact to read the data from .

 * \a detailList contains the details to be read from the contact

 * \return synthesised display label 

 */

QString CntDisplayLabel::generateDisplayLabel( const QContact &contact, const QList<QList<QPair<QLatin1String, QLatin1String> > > detailList) const

{

    // Default to empty display label. It is up to the client to create a

    // localised presentation of a contact without a name.

    QString displayLabel("");

    //loop through the details and create display label

    for(int i = 0; i < detailList.count() && displayLabel.isEmpty(); i++ )

    {

        QList<QPair<QLatin1String, QLatin1String> > detailPairList = detailList.at(i);

        QContactDetail contactDetail;

        for(int j = 0; j < detailPairList.count(); j++)

        {

            contactDetail = contact.detail(detailPairList.at(j).first);

            if(displayLabel.isEmpty()){ //read the value and set it as display label

                displayLabel =  contactDetail.value(detailPairList.at(j).second);

            }

            else{ //read the value and append it to the display label

                QString label = contactDetail.value(detailPairList.at(j).second);

                if(!label.isEmpty())

                {

                    // Inlcude a comma if needed in the display label

                    if (m_nameOrder == CntOrderLastCommaFirst)

                        displayLabel.append(comma());

                    displayLabel.append(delimiter());                        

                    displayLabel.append(label);

                }  

            }

        }

    }

    return displayLabel;

}

/*! 

 * delemiter to be used in display label

 * \return delemiter 

 */

QString CntDisplayLabel::delimiter() const

{

    //this will be variated in the future.

    return " ";

}

/*!

 * Returns the details to be used for contact filtering

 */

QList<QPair<QLatin1String, QLatin1String> > CntDisplayLabel::contactFilterDetails() const

{

    return m_contactDisplayLabelDetails.at(0);

}

/*!

 * Returns the details to be used for group filtering

 */

QList<QPair<QLatin1String, QLatin1String> > CntDisplayLabel::groupFilterDetails() const

{

    return m_groupDisplayLabelDetails.at(0);

}

/*! 

 * Comma to be used in display label

 * \return comma

 */

QString CntDisplayLabel::comma() const

{

    return ",";

}

#ifdef SYMBIAN_BACKEND_USE_SQLITE

void CntDisplayLabel::updateNameOrdering()

{

    emit displayLabelChanged();

}

CntCenrep::CntCenrep(const TUint32 aKey, CntDisplayLabel& aDisplayLabel) :

    CActive(EPriorityStandard),

    iCenrep(NULL),

    iDisplayLabel(&aDisplayLabel),

    iKey(aKey)

{   

    TRAPD(error, iCenrep = CRepository::NewL(KCRCntSettings));

    if ( error == KErrNone ) {

        CActiveScheduler::Add(this);

        // initial subscription and process current property value

        iCenrep->NotifyRequest(iKey, iStatus );

        SetActive();

    }

    iValue = getValue();

}

CntCenrep::~CntCenrep()

{

    Cancel();

    delete iCenrep;

}

int CntCenrep::getValue()

{    

    TInt value;

    if (iCenrep && iCenrep->Get(iKey, value) == KErrNone) {

        return value;

    } else {

        return -1;

    }

}

void CntCenrep::DoCancel()

{

    if (iCenrep)

        iCenrep->NotifyCancel(iKey);

}

TInt CntCenrep::RunError(TInt aError)

{

    return aError;

}

void CntCenrep::RunL()

{

    // resubscribe before processing new value to prevent missing updates

    iCenrep->NotifyRequest(iKey, iStatus );

    SetActive();

    int value = getValue();

    if (value != -1 && value != iValue) {

        iValue = value;

        iDisplayLabel->updateNameOrdering();

    }

}

#endif