// SPDX-License-Identifier: LGPL-2.1-or-later
//
// SPDX-FileCopyrightText: 2006-2012 Torsten Rahn <tackat@kde.org>
// SPDX-FileCopyrightText: 2007 Inge Wallin <ingwa@kde.org>
//

#include "svgxmlhandler.h"
#include <QDebug>

SVGXmlHandler::SVGXmlHandler(QDataStream *out, const QString &path, int header)
    : m_stream(out)
    , m_header(header)
    , m_path(path)
{
}

bool SVGXmlHandler::startElement(const QString & /*nspace*/, const QString & /*localName*/, const QString &qName, const QXmlAttributes &atts)
{
    if (qName == QLatin1StringView("path") && atts.value("id") == m_path) {
        QString coordinates = atts.value("d");

        QStringList stringlist;
        coordinates.chop(2);

        // This requires absolute paths and repeated L commands to
        // to be enforced in inkscape!
        stringlist << coordinates.mid(1).split(QLatin1Char('L'));
        bool firstheader = true;

        int count = 0;
        qDebug() << "Starting to write path" << atts.value("id");
        for (const QString &str : std::as_const(stringlist)) {
            float x;
            float y;
            x = str.section(QLatin1Char(','), 0, 0).toFloat();
            y = str.section(QLatin1Char(','), 1, 1).toFloat();

            short header;
            short lat;
            short lng;

            if (firstheader) {
                header = m_header;
                firstheader = false;
            } else {
                if (stringlist.size() > 14) {
                    if (count % 9 == 0)
                        header = 5;
                    else if (count % 5 == 0)
                        header = 3;
                    else if (count % 2 == 0)
                        header = 2;
                    else
                        header = 1;
                } else if (stringlist.size() > 6) {
                    if (count % 2 == 0)
                        header = 3;
                    else
                        header = 1;
                } else {
                    header = 2;
                }
            }
            if (count == stringlist.size() - 1)
                header = 5;

            lng = (int)(x * 50 - 10800);
            lat = -(int)(y * 50 - 5400);

            *m_stream << header << lat << lng;
            count++;
        }
    }

    return true;
}
