/*

 * SPDX-FileCopyrightText: 2025 Azhar Momin <azhar.momin@kdemail.net>

 * SPDX-License-Identifier: LGPL-2.0-or-later

 */

#include <QByteArray>

#include <QGuiApplication>

#include <QMimeDatabase>

#include <QSize>

#include <QTemporaryFile>

#include <QUrl>

#include <QVariant>

#include <KConfigGroup>

#include <KSharedConfig>

#include "djvucreator.h"

static void runThumbnailer(const QString &fileName, const QString &mimetype)

{

    QSize targetSize(128, 128);

    qreal dpr = 1.0;

    float sequenceIndex = 0.0f;

    KIO::ThumbnailRequest request(QUrl::fromLocalFile(fileName), targetSize, mimetype, dpr, sequenceIndex);

    DjVuCreator thumbnailer(nullptr, {});

    thumbnailer.create(request);

}

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)

{

    int argc = 0;

    QGuiApplication app(argc, nullptr);

    KConfigGroup globalConfig(KSharedConfig::openConfig(), QStringLiteral("PreviewSettings"));

    globalConfig.writeEntry("MaximumSize", 2llu * 1024 * 1024 * 1024);

    QByteArray b(reinterpret_cast<const char *>(data), static_cast<int>(size));

    QTemporaryFile f;

    if (!f.open()) {

        return 0;

    }

    f.write(b);

    f.close();

    QMimeDatabase mimeDb;

    QMimeType mimetype = mimeDb.mimeTypeForData(b);

    runThumbnailer(f.fileName(), mimetype.name());

    for (const QString &ancestor : mimetype.allAncestors()) {

        if (ancestor != QLatin1String("application/octet-stream")) {

            runThumbnailer(f.fileName(), ancestor);

        }

    }

    return 0;

}