/*  Copyright (C) 2013 VATSIM Community / contributors
 *  This Source Code Form is subject to the terms of the Mozilla Public
 *  License, v. 2.0. If a copy of the MPL was not distributed with this
 *  file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "blackmisc/pqbase.h"
#include "blackmisc/mathematics.h"

using namespace BlackMisc::Math;

namespace BlackMisc
{
namespace PhysicalQuantities
{

// -----------------------------------------------------------------------
// --- Measurement unit --------------------------------------------------
// -----------------------------------------------------------------------

/*
 * Equal operator
 */
bool CMeasurementUnit::operator ==(const CMeasurementUnit &other) const
{
    if (this == &other) return true;
    return this->m_name == other.m_name;
}

/*
 * Unequal operator
 */
bool CMeasurementUnit::operator !=(const CMeasurementUnit &other) const
{
    return !(other == *this);
}

/*
 * Conversion
 */
double CMeasurementUnit::convertFrom(double value, const CMeasurementUnit &unit) const
{
    Q_ASSERT(this->m_converter);
    Q_ASSERT(unit.m_converter);
    if (this->m_converter == unit.m_converter) return value;
    return this->m_converter->fromDefault(unit.m_converter->toDefault(value));
}

/*
 * Value to QString with unit, e.g. "5.00m"
 * @return
 */
QString CMeasurementUnit::makeRoundedQStringWithUnit(double value, int digits, bool i18n) const
{
    return this->makeRoundedQString(value, digits).append(this->getSymbol(i18n));
}

/*
 * Value rounded
 */
double CMeasurementUnit::roundValue(double value, int digits) const
{
    if (digits < 0) digits = this->m_displayDigits;
    return CMath::round(value, digits);
}

/*
 * Rounded to QString
 */
QString CMeasurementUnit::makeRoundedQString(double value, int digits, bool /* i18n */) const
{
    if (digits < 0) digits = this->m_displayDigits;
    double v = CMath::round(value, digits);
    QString s = QLocale::system().toString(v, 'f', digits);
    return s;
}

} // namespace
} // namespace