/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2007-03-20
 * Description : Listing information from database.
 *
 * SPDX-FileCopyrightText: 2005      by Renchi Raju    <renchi dot raju at gmail dot com>
 * SPDX-FileCopyrightText: 2007-2012 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 * SPDX-FileCopyrightText: 2007-2026 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * SPDX-FileCopyrightText: 2015      by Mohamed_Anwer  <m_dot_anwer at gmx dot com>
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * ============================================================ */

#pragma once

// Qt includes

#include <QString>

// Local includes

#include "digikam_export.h"
#include "iteminfo.h"
#include "iteminfolist.h"
#include "coredbaccess.h"
#include "coredburl.h"
#include "itemlisterrecord.h"
#include "itemlisterreceiver.h"
#include "dbjobinfo.h"

namespace Digikam
{

class DIGIKAM_DATABASE_EXPORT ItemLister
{

public:

    explicit ItemLister();
    ~ItemLister();

    /**
     * Adjust the setting if album or tags will be listed recursively (i.e. including subalbums / subtags)
     */
    void setRecursive(bool recursive);

    /**
     * Adjust the setting if images from collections that are currently not in the state "available"
     * will be included in the listing. Default: true.
     */
    void setListOnlyAvailable(bool listOnlyAvailable);

    /**
     * Convenience method for Album, Tag and Date URLs, _not_ for Search URLs.
     */
    void list(ItemListerReceiver* const receiver,
              const CoreDbUrl& url);

    /**
     * List those images whose date lies in the range beginning with startDate (inclusive)
     * and ending before endDate (exclusive).
     */
    void listDateRange(ItemListerReceiver* const receiver,
                       const QDate& startDate,
                       const QDate& endDate);

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

    /** @name Operations with PAlbum
     */

    //@{

public:

    /**
     * List images in the Album (physical album) specified by albumRoot, album.
     * The results will be fed to the specified receiver.
     */
    void listPAlbum(ItemListerReceiver* const receiver,
                    int albumRootId,
                    const QString& album);

private:

    QSet<int> albumRootsToList() const;

    //@}

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

    /** @name Operations with TAlbum
     */

    //@{

public:

    /**
     * List the images which have assigned the tags specified by tagIds
     * Updated to support multiple tags
     */
    void listTag(ItemListerReceiver* const receiver,
                 const QList<int>& tagIds);

    /**
     * Execute the search specified by search XML describing a Tag Properties search.
     * Two special add-ons: Non-unique by image id; if enabled, uses the extended ImageRecord protocol
     * to pass the property value in the record's extraValue.
     * @param receiver the receiver for the searches
     * @param xml SearchXml describing the query
     */
    void listImageTagPropertySearch(ItemListerReceiver* const receiver,
                                    const QString& xml);

    QString tagSearchXml(int tagId,
                         const QString& type,
                         bool includeChildTags) const;

    //@}

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

    /** @name Operations with SAlbum
     */

    //@{

public:

    /**
     * Execute the search specified by search XML
     * @param receiver the receiver for the searches
     * @param xml SearchXml describing the query
     * @param limit the limit the count of the result set. If limit = 0, then no limit is set.
     * @param referenceImageId the id of a reference image in the search query.
     */
    void listSearch(ItemListerReceiver* const receiver,
                    const QString& xml,
                    int limit = 0,
                    qlonglong referenceImageId = -1);

    /**
     * Execute the search specified by search XML describing a Haar search
     * @param receiver the receiver for the searches
     * @param xml SearchXml describing the query
     */
    void listHaarSearch(ItemListerReceiver* const receiver,
                        const QString& xml);

    /**
     * List the images whose coordinates are between coordinates contained
     * in areaCoordinates(lat1, lat2, lng1, lng2).
     */
    void listAreaRange(ItemListerReceiver* const receiver,
                       double lat1,
                       double lat2,
                       double lon1,
                       double lon2);

private:

    /**
     * This method generates image records for the receiver that contain the similarities.
     * @param receiver for the searches
     * @param imageSimilarityMap the map of image ids and their similarities in the HAAR search
     * @param referenceImageId the id of the reference image to search for
     */
    void listFromHaarSearch(ItemListerReceiver* const receiver,
                            const QMap<qlonglong, double>& imageSimilarityMap,
                            qlonglong referenceImageId);
    //@}

private:

    // Disable
    ItemLister(const ItemLister&)            = delete;
    ItemLister& operator=(const ItemLister&) = delete;

private:

    class Private;
    Private* const d = nullptr;
};

} // namespace Digikam
