#include "VBrightness.h"

// Qt
#include <QApplication>
// Project
#include "Logger.h"

using namespace View;
using namespace Gui;
using namespace Storage;

VBrightness::VBrightness(QObject *parent) : QObject(parent) {
    initConnections();
    init();
}

/*!
 * \brief VBrightness::init
 * Applies the user specified brightness level on start
 * Defaults to the maximum brightness level if the level is not set
 */
void VBrightness::init()
{
    doSetBrightness(getBrightness());
}

/*!
 * \brief VDeviceInformation::initConnections
 * Makes the necessary connections. Called inside VIEW_DEF_CLASS
 */
void VBrightness::initConnections()
{
    connect(&_processSetBrightness, SIGNAL(finished(int)),
            this, SLOT(onProcessSetBrightnessFinished(int)));
}

/*!
 * \brief VBrightness::doSetBrightness
 * Called when the user tries to set the current brightness
 * \param vBrightness (quint32) the brightness level
 */
void VBrightness::doSetBrightness(const quint32 &vBrightness)
{
    if (_processSetBrightness.state() != QProcess::NotRunning)
        return;

    brightness(vBrightness);

    _processSetBrightness.start(Brightness_Set, QStringList() << QString("%0").arg(vBrightness));
}

/*!
 * \brief VBrightness::onProcessSetBrightnessFinished
 * Called when the process to set the brightness has finished
 * \param vExitCode (int) the exit code
 */
void VBrightness::onProcessSetBrightnessFinished(const int &vExitCode)
{
    if (vExitCode != 0) {
        status(tr("Failed to set brightness"));
    }
}

/*!
 * \brief VBrightness::doGetBrightness
 * Gets the current brightness level
 */
void VBrightness::doGetBrightness()
{
    brightness(getBrightness());
}

/*!
 * \brief VBrightness::getBrightness
 * Gets the current brightness level from settings
 * \return (quint32) the current brightness level
 */
quint32 VBrightness::getBrightness() const
{
    bool ok = false;
    QVariant currentLevel = BrightnessSettings.value(Brightness_Level, brightnessMaximum());
    quint32 level = currentLevel.toInt(&ok);
    if (ok)
        return level;
    return brightnessMaximum();
}

/*!
 * \brief VBrightness::doSaveBrightness
 * Saves the brightness level to the settings file
 */
void VBrightness::doSaveBrightness()
{
    // update settings
    BrightnessSettings.setValue(Brightness_Level, brightness());
}