//  Distance.cpp
//
//  Copyright (C) 2016  Jaye Evins <evins@snaught.com>
//
//  This file is part of gLabels-qt.
//
//  gLabels-qt 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 3 of the License, or
//  (at your option) any later version.
//
//  gLabels-qt 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 gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
//


#include "Distance.hpp"

#include <QTextStream>
#include <QDebug>
#include <QIODevice>


namespace glabels::model
{

        Distance::Distance( double d, Units::Enum unitsEnum )
        {
                switch (unitsEnum)
                {
                case Units::PT:
                        mDPts = d;
                        break;
                case Units::IN:
                        mDPts = d * PTS_PER_INCH;
                        break;
                case Units::MM:
                        mDPts = d * PTS_PER_MM;
                        break;
                case Units::CM:
                        mDPts = d * PTS_PER_CM;
                        break;
                case Units::PC:
                        mDPts = d * PTS_PER_PICA;
                        break;
                default:
                        mDPts = d;
                        break;
                }
        }


        Distance::Distance( double d, Units units )
        {
                switch (units.toEnum())
                {
                case Units::PT:
                        mDPts = d;
                        break;
                case Units::IN:
                        mDPts = d * PTS_PER_INCH;
                        break;
                case Units::MM:
                        mDPts = d * PTS_PER_MM;
                        break;
                case Units::CM:
                        mDPts = d * PTS_PER_CM;
                        break;
                case Units::PC:
                        mDPts = d * PTS_PER_PICA;
                        break;
                default:
                        mDPts = d;
                        break;
                }
        }


        Distance::Distance( double d, const QString& unitsId )
        {
                Units units = Units( unitsId );

                switch (units.toEnum())
                {
                case Units::PT:
                        mDPts = d;
                        break;
                case Units::IN:
                        mDPts = d * PTS_PER_INCH;
                        break;
                case Units::MM:
                        mDPts = d * PTS_PER_MM;
                        break;
                case Units::CM:
                        mDPts = d * PTS_PER_CM;
                        break;
                case Units::PC:
                        mDPts = d * PTS_PER_PICA;
                        break;
                default:
                        mDPts = d;
                        break;
                }
        }


        Distance Distance::fromString( const QString& string )
        {
                QString stringCopy = string;
                QTextStream valueStream( &stringCopy, QIODevice::ReadOnly );

                double value;
                QString unitsString;
                valueStream >> value >> unitsString;

                if ( !unitsString.isEmpty() && !Units::isIdValid( unitsString ) )
                {
                        qWarning() << "Invalid Units in string: \"" << string << "\"";
                }

                return Distance( value, unitsString );
        }


        double Distance::inUnits( Units units ) const
        {
                double d;

                switch (units.toEnum())
                {
                case Units::PT:
                        d = pt();
                        break;
                case Units::IN:
                        d = in();
                        break;
                case Units::MM:
                        d = mm();
                        break;
                case Units::CM:
                        d = cm();
                        break;
                case Units::PC:
                        d = pc();
                        break;
                default:
                        d = mDPts;
                        break;
                }

                return d;
        }


        double Distance::inUnits( Units::Enum unitsEnum ) const
        {
                double d;

                switch (unitsEnum)
                {
                case Units::PT:
                        d = pt();
                        break;
                case Units::IN:
                        d = in();
                        break;
                case Units::MM:
                        d = mm();
                        break;
                case Units::CM:
                        d = cm();
                        break;
                case Units::PC:
                        d = pc();
                        break;
                default:
                        d = mDPts;
                        break;
                }

                return d;
        }


        double Distance::inUnits( const QString& unitsId ) const
        {
                return inUnits( Units( unitsId ) );
        }


        QString Distance::toString( Units units ) const
        {
                return QString::number( inUnits(units) ) + units.toIdString();
        }


        QString Distance::toString( Units::Enum unitsEnum ) const
        {
                Units units(unitsEnum);
                return QString::number( inUnits(units) ) + units.toIdString();
        }


        QString Distance::toString( const QString& unitsId ) const
        {
                Units units(unitsId);
                return QString::number( inUnits(units) ) + units.toIdString();
        }

}


QDebug operator<<( QDebug dbg, glabels::model::Distance distance )
{
        QDebugStateSaver saver(dbg);

        dbg.nospace() << distance.pt() << "pt";

        return dbg;
}
