ssbv1ticket.cpp

/*
    SPDX-FileCopyrightText: 2021 Volker Krause <[email protected]>

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

#include "ssbv1ticket.h"

#include <QDebug>

#include <cstring>

using namespace KItinerary;

enum {
    SSB_DATA_SIZE_MIN = 107,
    SSB_DATA_SIZE_MAX = 111,
    SSB_VERSION = 1,
};

SSBv1Ticket::SSBv1Ticket() = default;

SSBv1Ticket::SSBv1Ticket(const QByteArray &data)
{
    if (maybeSSB(data)) {
        m_data = data;
    } else {
        qWarning() << "Trying to construct an SSB ticket from invalid data!";
    }
}

SSBv1Ticket::~SSBv1Ticket() = default;

bool SSBv1Ticket::isValid() const
{
    return !m_data.isEmpty();
}

bool SSBv1Ticket::maybeSSB(const QByteArray& data)
{
    if (data.size() < SSB_DATA_SIZE_MIN || data.size() > SSB_DATA_SIZE_MAX) {
        return false;
    }
    return (data.at(0) >> 4) == SSB_VERSION;
}

QDate SSBv1Ticket::firstDayOfValidity(const QDateTime &contextDate) const
{
    if (!isValid() || firstDayOfValidityDay() == 0 || firstDayOfValidityDay() > 366) {
        return {};
    }
    QDate d(contextDate.date().year(), 1, 1);
    return d.addDays(firstDayOfValidityDay() - 1);
}

QDateTime SSBv1Ticket::departureTime(const QDateTime &contextDate) const
{
    if (!isValid() || departureTimeSlot() == 0 || departureTimeSlot() > 48) {
        return {};
    }

    QDateTime dt(firstDayOfValidity(contextDate), {0, 0});
    return dt.addSecs(60 * 30 * (departureTimeSlot() - 1));
}

QByteArray SSBv1Ticket::rawData() const
{
    return m_data;
}