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#include "organizeritemguidtransform.h"
#include "qorganizeritemguid.h"

const TInt KGuidLength = 30;

OrganizerItemGuidTransform::OrganizerItemGuidTransform()
{
    // Set seed for qrand()
    TTime homeTime;
    homeTime.HomeTime();
    uint seed = (uint) homeTime.Int64();
    qsrand(seed);
}

void OrganizerItemGuidTransform::transformToDetailL(const CCalEntry& entry, QOrganizerItem *item)
{
    QString guid = toQString(entry.UidL());
    if (!guid.isEmpty())
        item->setGuid(guid);
}

void OrganizerItemGuidTransform::transformToDetailPostSaveL(const CCalEntry& entry, QOrganizerItem *item)
{
    transformToDetailL(entry, item);
}

void OrganizerItemGuidTransform::transformToEntryL(const QOrganizerItem& item, CCalEntry* entry)
{
    Q_UNUSED(item);
    Q_UNUSED(entry);
    // Not used. Guid is already set when CCalEntry was created.
}

QString OrganizerItemGuidTransform::detailDefinitionName()
{
    return QOrganizerItemGuid::DefinitionName;    
}

HBufC8 *OrganizerItemGuidTransform::guidLC(const QOrganizerItem &item)
{
    // Read guid from organizer item
    QString globalUidString = item.guid();

    if (globalUidString.isEmpty()) {
        // Generate a new quid
        // TODO: is this long enough for us? We could add imei or second random number to it...
        HBufC8* globalUidBuf = HBufC8::NewLC(KGuidLength);
        TPtr8 ptr = globalUidBuf->Des();
        ptr.Num(qrand());
        return globalUidBuf; // ownership passed
    } else {
        // Use the given guid
        HBufC8* globalUidBuf = HBufC8::NewLC(globalUidString.length());
        TPtr8 ptr = globalUidBuf->Des();
        QByteArray bytes = globalUidString.toUtf8();
        ptr = toPtrC8(bytes);
        return globalUidBuf; // ownership passed
    }
}
