/*
 * Copyright (C) 2015  Malte Veerman <maldela@halloarsch.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */


#include "fan.h"

#include "hwmon.h"

#include <QTextStream>
#include <QDir>
#include <QFile>
#include <QDebug>

#include <KSharedConfig>
#include <KConfigGroup>



Fan::Fan(Hwmon *parent, uint index) : 
    Sensor(parent, index, QString(parent->name() + QString("/fan") + QString::number(index))),
    m_rpmStream(new QTextStream)
{
    if (QDir(parent->path()).isReadable())
    {
        QFile *rpmFile = new QFile(parent->path() + "/fan" + QString::number(index) + "_input", this);

        if (rpmFile->open(QFile::ReadOnly))
        {
            m_rpmStream->setDevice(rpmFile);
            *m_rpmStream >> m_rpm;
        }
        else
            qDebug() << "Can't open rpmFile " << parent->path() + "/fan" + QString::number(index) + "_input";
    }
}

Fan::~Fan()
{
    delete m_rpmStream;
}

QString Fan::name() const
{
    KConfigGroup names = KSharedConfig::openConfig("fancontrol-gui")->group("names");
    KConfigGroup localNames = names.group(m_parent->name());
    QString name = localNames.readEntry("fan" + QString::number(m_index), QString());
    if (name.isEmpty())
        return "fan" + QString::number(m_index);
    return name;
}

void Fan::setName(const QString &name)
{
    KConfigGroup names = KSharedConfig::openConfig("fancontrol-gui")->group("names");
    KConfigGroup localNames = names.group(m_parent->name());
    if (name != localNames.readEntry("fan" + QString::number(m_index), QString())
        && !name.isEmpty())
    {
        localNames.writeEntry("fan" + QString::number(m_index), name);
        emit nameChanged();
    }
}

void Fan::reset()
{
    QIODevice *oldFile = m_rpmStream->device();
    delete m_rpmStream;
    delete oldFile;
    
    if (QDir(m_parent->path()).isReadable())
    {
        QFile *rpmFile = new QFile(m_parent->path() + "/fan" + QString::number(m_index) + "_input", this);

        if (rpmFile->open(QFile::ReadOnly))
        {
            m_rpmStream = new QTextStream(rpmFile);
            *m_rpmStream >> m_rpm;
        }
        else
            qDebug() << "Can't open rpmFile " << m_parent->path() + "/fan" + QString::number(m_index) + "_input";
    }
}

void Fan::update()
{
    m_rpmStream->seek(0);
    *m_rpmStream >> m_rpm;
    emit rpmChanged();
}