/*
 *  Copyright (C) 2017 KeePassXC Team <team@keepassxc.org>
 *
 *  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)
 *  version 3 of the License.
 *
 *  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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  Portions copyright (c) 2020, The Monero Project
 */

#ifndef KEEPASSX_QRCODE_H
#define KEEPASSX_QRCODE_H

#include <QScopedPointer>
#include <QtCore/qglobal.h>
#include <QPixmap>

class QImage;
class QIODevice;
class QString;
class QByteArray;

struct QrCodePrivate;

class QrCode
{

public:
    enum class ErrorCorrectionLevel : int
    {
        LOW = 0,
        MEDIUM,
        QUARTILE,
        HIGH
    };

    // See: http://www.qrcode.com/en/about/version.html
    // clang-format off
    enum class Version : int
    {
        AUTO = 0,
        V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, V20,
        V21, V22, V23, V24, V25, V26, V27, V28, V29, V30, V31, V32, V33, V34, V35, V36, V37, V38, V39, V40
    };
    // clang-format on

    // Uses QRcode_encodeString (can't contain NUL characters)
    explicit QrCode(const QString& data,
                    const Version version = Version::AUTO,
                    const ErrorCorrectionLevel ecl = ErrorCorrectionLevel::HIGH,
                    const bool caseSensitive = true);

    // Uses QRcode_encodeData (can contain NUL characters)
    explicit QrCode(const QByteArray& data,
                    const Version version = Version::AUTO,
                    const ErrorCorrectionLevel ecl = ErrorCorrectionLevel::HIGH);

    QrCode();
    ~QrCode();

    bool isValid() const;
    void writeSvg(QIODevice* outputDevice, const int dpi, const int margin = 4) const;
    QPixmap toPixmap(const int margin = 4) const;

    int width();
    unsigned char* data();

private:
    void init(const QString& data, const Version version, const ErrorCorrectionLevel ecl, const bool caseSensitive);

    void init(const QByteArray& data, const Version version, const ErrorCorrectionLevel ecl);

    QScopedPointer<QrCodePrivate> d_ptr;
};

#endif // KEEPASSX_QRCODE_H
