/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2005-10-28
 * Description : scan item controller - private containers.
 *
 * Copyright (C) 2005-2006 by Tom Albers <tomalbers at kde dot nl>
 * Copyright (C) 2006-2019 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * Copyright (C) 2007-2013 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * ============================================================ */

#include "scancontroller_p.h"

namespace Digikam
{

SimpleCollectionScannerObserver::SimpleCollectionScannerObserver(bool* const var)
    : m_continue(var)
{
    *m_continue = true;
}

bool SimpleCollectionScannerObserver::continueQuery()
{
    return *m_continue;
}

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

ScanController::Private::Private()
    : running(false),
      needsInitialization(false),
      needsCompleteScan(false),
      needsUpdateUniqueHash(false),
      idle(false),
      scanSuspended(0),
      deferFileScanning(false),
      finishScanAllowed(true),
      continueInitialization(false),
      continueScan(false),
      continuePartialScan(false),
      fileWatchInstalled(false),
      eventLoop(nullptr),
      showTimer(nullptr),
      relaxedTimer(nullptr),
      externalTimer(nullptr),
      hints(CollectionScanner::createHintContainer()),
      progressDialog(nullptr),
      advice(ScanController::Success),
      needTotalFiles(false),
      totalFilesToScan(0)
{
}

QPixmap ScanController::Private::albumPixmap()
{
    if (albumPix.isNull())
    {
        albumPix = QIcon::fromTheme(QLatin1String("folder-pictures")).pixmap(32);
    }

    return albumPix;
}

QPixmap ScanController::Private::rootPixmap()
{
    if (rootPix.isNull())
    {
        rootPix = QIcon::fromTheme(QLatin1String("folder-open")).pixmap(32);
    }

    return rootPix;
}

QPixmap ScanController::Private::actionPixmap()
{
    if (actionPix.isNull())
    {
        actionPix = QIcon::fromTheme(QLatin1String("system-run")).pixmap(32);
    }

    return actionPix;
}

QPixmap ScanController::Private::errorPixmap()
{
    if (errorPix.isNull())
    {
        errorPix = QIcon::fromTheme(QLatin1String("dialog-error")).pixmap(32);
    }

    return errorPix;
}

QPixmap ScanController::Private::restartPixmap()
{
    if (errorPix.isNull())
    {
        errorPix = QIcon::fromTheme(QLatin1String("view-refresh")).pixmap(32);
    }

    return errorPix;
}

void ScanController::Private::garbageCollectHints(bool setAccessTime)
{
    QDateTime current = QDateTime::currentDateTime();

    if (idle                    &&
        lastHintAdded.isValid() &&
        lastHintAdded.secsTo(current) > (5*60))
    {
        hints->clear();
    }

    if (setAccessTime)
    {
        lastHintAdded = current;
    }
}

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

ScanControllerLoadingCacheFileWatch::ScanControllerLoadingCacheFileWatch()
{
    CoreDbWatch* const dbwatch = CoreDbAccess::databaseWatch();

    // we opt for a queued connection to make stuff a bit relaxed
    connect(dbwatch, SIGNAL(imageChange(ImageChangeset)),
            this, SLOT(slotImageChanged(ImageChangeset)),
            Qt::QueuedConnection);
}

void ScanControllerLoadingCacheFileWatch::slotImageChanged(const ImageChangeset& changeset)
{
    foreach (const qlonglong& imageId, changeset.ids())
    {
        DatabaseFields::Set changes = changeset.changes();

        if (changes & DatabaseFields::ModificationDate || changes & DatabaseFields::Orientation)
        {
            ItemInfo info(imageId);
            //qCDebug(DIGIKAM_DATABASE_LOG) << imageId << info.filePath();
            notifyFileChanged(info.filePath());
        }
    }
}

} // namespace Digikam
