///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017 Edouard Griffiths, F4EXB                                   //
//                                                                               //
// This program 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 as version 3 of the License, or                  //
//                                                                               //
// 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 General Public License V3 for more details.                               //
//                                                                               //
// You should have received a copy of the GNU General Public License             //
// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
///////////////////////////////////////////////////////////////////////////////////

#include "device/devicesinkapi.h"
#include "dsp/upchannelizer.h"
#include "dsp/threadedbasebandsamplesource.h"
#include "dsp/spectrumvis.h"
#include "dsp/dspengine.h"
#include "util/simpleserializer.h"
#include "util/db.h"
#include "gui/basicchannelsettingswidget.h"
#include "plugin/pluginapi.h"
#include "mainwindow.h"

#include "udpsinkgui.h"
#include "ui_udpsinkgui.h"

const QString UDPSinkGUI::m_channelID = "sdrangel.channeltx.udpsink";

UDPSinkGUI* UDPSinkGUI::create(PluginAPI* pluginAPI, DeviceSinkAPI *deviceAPI)
{
    UDPSinkGUI* gui = new UDPSinkGUI(pluginAPI, deviceAPI);
    return gui;
}

void UDPSinkGUI::destroy()
{
}

void UDPSinkGUI::setName(const QString& name)
{
    setObjectName(name);
}

QString UDPSinkGUI::getName() const
{
    return objectName();
}

qint64 UDPSinkGUI::getCenterFrequency() const {
    return m_channelMarker.getCenterFrequency();
}

void UDPSinkGUI::setCenterFrequency(qint64 centerFrequency)
{
    m_channelMarker.setCenterFrequency(centerFrequency);
    applySettings();
}

void UDPSinkGUI::resetToDefaults()
{
    blockApplySettings(true);

    ui->sampleFormat->setCurrentIndex(0);
    ui->sampleRate->setText("48000");
    ui->rfBandwidth->setText("32000");
    ui->fmDeviation->setText("2500");
    ui->udpAddress->setText("127.0.0.1");
    ui->udpPort->setText("9999");
    ui->spectrumGUI->resetToDefaults();
    ui->gain->setValue(10);

    blockApplySettings(false);
    applySettings();
}

QByteArray UDPSinkGUI::serialize() const
{
    SimpleSerializer s(1);
    s.writeBlob(1, saveState());
    s.writeS32(2, m_channelMarker.getCenterFrequency());
    s.writeS32(3, m_sampleFormat);
    s.writeReal(4, m_inputSampleRate);
    s.writeReal(5, m_rfBandwidth);
    s.writeS32(6, m_udpPort);
    s.writeBlob(7, ui->spectrumGUI->serialize());
    s.writeS32(8, m_channelMarker.getCenterFrequency());
    s.writeString(9, m_udpAddress);
    s.writeS32(10, ui->gain->value());
    s.writeS32(11, m_fmDeviation);
    s.writeU32(12, m_channelMarker.getColor().rgb());
    s.writeString(13, m_channelMarker.getTitle());
    s.writeS32(14, ui->squelch->value());
    s.writeS32(15, ui->squelchGate->value());
    return s.final();
}

bool UDPSinkGUI::deserialize(const QByteArray& data)
{
    SimpleDeserializer d(data);

    if (!d.isValid())
    {
        resetToDefaults();
        return false;
    }

    if (d.getVersion() == 1)
    {
        QByteArray bytetmp;
        QString strtmp;
        qint32 s32tmp;
        quint32 u32tmp;
        Real realtmp;

        blockApplySettings(true);
        m_channelMarker.blockSignals(true);

        d.readBlob(1, &bytetmp);
        restoreState(bytetmp);
        d.readS32(2, &s32tmp, 0);
        m_channelMarker.setCenterFrequency(s32tmp);

        d.readS32(3, &s32tmp, UDPSink::FormatS16LE);
        switch(s32tmp) {
            case UDPSink::FormatS16LE:
                ui->sampleFormat->setCurrentIndex(0);
                break;
            case UDPSink::FormatNFM:
                ui->sampleFormat->setCurrentIndex(1);
                break;
            case UDPSink::FormatNFMMono:
                ui->sampleFormat->setCurrentIndex(2);
                break;
            case UDPSink::FormatLSB:
                ui->sampleFormat->setCurrentIndex(3);
                break;
            case UDPSink::FormatUSB:
                ui->sampleFormat->setCurrentIndex(4);
                break;
            case UDPSink::FormatLSBMono:
                ui->sampleFormat->setCurrentIndex(5);
                break;
            case UDPSink::FormatUSBMono:
                ui->sampleFormat->setCurrentIndex(6);
                break;
            case UDPSink::FormatAMMono:
                ui->sampleFormat->setCurrentIndex(7);
                break;
            default:
                ui->sampleFormat->setCurrentIndex(0);
                break;
        }
        d.readReal(4, &realtmp, 48000);
        ui->sampleRate->setText(QString("%1").arg(realtmp, 0));
        d.readReal(5, &realtmp, 32000);
        ui->rfBandwidth->setText(QString("%1").arg(realtmp, 0));
        d.readS32(6, &s32tmp, 9999);
        ui->udpPort->setText(QString("%1").arg(s32tmp));
        d.readBlob(7, &bytetmp);
        ui->spectrumGUI->deserialize(bytetmp);
        d.readS32(8, &s32tmp, 0);
        m_channelMarker.setCenterFrequency(s32tmp);
        d.readString(9, &strtmp, "127.0.0.1");
        ui->udpAddress->setText(strtmp);
        d.readS32(10, &s32tmp, 10);
        ui->gain->setValue(s32tmp);
        ui->gainText->setText(tr("%1").arg(s32tmp/10.0, 0, 'f', 1));
        d.readS32(11, &s32tmp, 2500);
        ui->fmDeviation->setText(QString("%1").arg(s32tmp));

        d.readU32(12, &u32tmp, Qt::green);
        m_channelMarker.setColor(u32tmp);
        d.readString(13, &strtmp, "UDP Sample Sink");
        m_channelMarker.setTitle(strtmp);
        this->setWindowTitle(m_channelMarker.getTitle());

        d.readS32(14, &s32tmp, -60);
        ui->squelch->setValue(s32tmp);
        ui->squelchText->setText(tr("%1").arg(s32tmp*1.0, 0, 'f', 0));
        d.readS32(15, &s32tmp, 5);
        ui->squelchGate->setValue(s32tmp);
        ui->squelchGateText->setText(tr("%1").arg(s32tmp*10.0, 0, 'f', 0));

        blockApplySettings(false);
        m_channelMarker.blockSignals(false);

        applySettings(true);
        return true;
    }
    else
    {
        resetToDefaults();
        return false;
    }
}

bool UDPSinkGUI::handleMessage(const Message& message __attribute__((unused)))
{
    qDebug() << "UDPSinkGUI::handleMessage";
    return false;
}

void UDPSinkGUI::handleSourceMessages()
{
    Message* message;

    while ((message = m_udpSink->getOutputMessageQueue()->pop()) != 0)
    {
        if (handleMessage(*message))
        {
            delete message;
        }
    }
}

UDPSinkGUI::UDPSinkGUI(PluginAPI* pluginAPI, DeviceSinkAPI *deviceAPI, QWidget* parent) :
        RollupWidget(parent),
        ui(new Ui::UDPSinkGUI),
        m_pluginAPI(pluginAPI),
        m_deviceAPI(deviceAPI),
        m_channelPowerAvg(4, 1e-10),
        m_inPowerAvg(4, 1e-10),
        m_tickCount(0),
        m_channelMarker(this),
        m_basicSettingsShown(false),
        m_doApplySettings(true)
{
    ui->setupUi(this);
    connect(this, SIGNAL(widgetRolled(QWidget*,bool)), this, SLOT(onWidgetRolled(QWidget*,bool)));
    connect(this, SIGNAL(menuDoubleClickEvent()), this, SLOT(onMenuDoubleClicked()));
    setAttribute(Qt::WA_DeleteOnClose, true);

    m_spectrumVis = new SpectrumVis(ui->glSpectrum);
    m_udpSink = new UDPSink(m_pluginAPI->getMainWindowMessageQueue(), this, m_spectrumVis);
    m_channelizer = new UpChannelizer(m_udpSink);
    m_threadedChannelizer = new ThreadedBasebandSampleSource(m_channelizer, this);
    m_deviceAPI->addThreadedSource(m_threadedChannelizer);

    ui->fmDeviation->setEnabled(false);
    ui->deltaFrequencyLabel->setText(QString("%1f").arg(QChar(0x94, 0x03)));
    ui->deltaFrequency->setColorMapper(ColorMapper(ColorMapper::GrayGold));
    ui->deltaFrequency->setValueRange(false, 7, -9999999, 9999999);

    ui->glSpectrum->setCenterFrequency(0);
    ui->glSpectrum->setSampleRate(ui->sampleRate->text().toInt());
    ui->glSpectrum->setDisplayWaterfall(true);
    ui->glSpectrum->setDisplayMaxHold(true);
    m_spectrumVis->configure(m_spectrumVis->getInputMessageQueue(), 64, 10, FFTWindow::BlackmanHarris);

    ui->glSpectrum->connectTimer(m_pluginAPI->getMainWindow()->getMasterTimer());
    connect(&m_pluginAPI->getMainWindow()->getMasterTimer(), SIGNAL(timeout()), this, SLOT(tick()));

    //m_channelMarker = new ChannelMarker(this);
    m_channelMarker.setBandwidth(16000);
    m_channelMarker.setCenterFrequency(0);
    m_channelMarker.setColor(Qt::green);
    m_channelMarker.setTitle("UDP Sample Sink");
    m_channelMarker.setVisible(true);

    connect(&m_channelMarker, SIGNAL(changed()), this, SLOT(channelMarkerChanged()));

    m_deviceAPI->registerChannelInstance(m_channelID, this);
    m_deviceAPI->addChannelMarker(&m_channelMarker);
    m_deviceAPI->addRollupWidget(this);

    ui->spectrumGUI->setBuddies(m_spectrumVis->getInputMessageQueue(), m_spectrumVis, ui->glSpectrum);

    displaySettings();
    applySettings(true);

    connect(m_udpSink->getOutputMessageQueue(), SIGNAL(messageEnqueued()), this, SLOT(handleSourceMessages()));
    connect(m_udpSink, SIGNAL(levelChanged(qreal, qreal, int)), ui->volumeMeter, SLOT(levelChanged(qreal, qreal, int)));
}

UDPSinkGUI::~UDPSinkGUI()
{
    m_deviceAPI->removeChannelInstance(this);
    m_deviceAPI->removeThreadedSource(m_threadedChannelizer);
    delete m_threadedChannelizer;
    delete m_channelizer;
    delete m_udpSink;
    delete m_spectrumVis;
    delete ui;
}

void UDPSinkGUI::blockApplySettings(bool block)
{
    m_doApplySettings = !block;
}

void UDPSinkGUI::applySettings(bool force)
{
    if (m_doApplySettings)
    {
        bool ok;

        Real inputSampleRate = ui->sampleRate->text().toDouble(&ok);

        if((!ok) || (inputSampleRate < 1000))
        {
            inputSampleRate = 48000;
        }

        Real rfBandwidth = ui->rfBandwidth->text().toDouble(&ok);

        if((!ok) || (rfBandwidth > inputSampleRate))
        {
            rfBandwidth = inputSampleRate;
        }

        m_udpAddress = ui->udpAddress->text();

        int udpPort = ui->udpPort->text().toInt(&ok);

        if((!ok) || (udpPort < 1024) || (udpPort > 65535))
        {
            udpPort = 9999;
        }

        int fmDeviation = ui->fmDeviation->text().toInt(&ok);

        if ((!ok) || (fmDeviation < 1))
        {
            fmDeviation = 2500;
        }

        setTitleColor(m_channelMarker.getColor());
        ui->deltaFrequency->setValue(m_channelMarker.getCenterFrequency());
        ui->sampleRate->setText(QString("%1").arg(inputSampleRate, 0));
        ui->rfBandwidth->setText(QString("%1").arg(rfBandwidth, 0));
        //ui->udpAddress->setText(m_udpAddress);
        ui->udpPort->setText(QString("%1").arg(udpPort));
        ui->fmDeviation->setText(QString("%1").arg(fmDeviation));
        m_channelMarker.disconnect(this, SLOT(channelMarkerChanged()));
        m_channelMarker.setBandwidth((int)rfBandwidth);
        connect(&m_channelMarker, SIGNAL(changed()), this, SLOT(channelMarkerChanged()));
        ui->glSpectrum->setSampleRate(inputSampleRate);

        m_channelizer->configure(m_channelizer->getInputMessageQueue(),
                inputSampleRate,
                m_channelMarker.getCenterFrequency());

        UDPSink::SampleFormat sampleFormat;

        switch(ui->sampleFormat->currentIndex())
        {
            case 0:
                sampleFormat = UDPSink::FormatS16LE;
                ui->fmDeviation->setEnabled(false);
                break;
            case 1:
                sampleFormat = UDPSink::FormatNFM;
                ui->fmDeviation->setEnabled(true);
                break;
            case 2:
                sampleFormat = UDPSink::FormatNFMMono;
                ui->fmDeviation->setEnabled(true);
                break;
            case 3:
                sampleFormat = UDPSink::FormatLSB;
                ui->fmDeviation->setEnabled(false);
                break;
            case 4:
                sampleFormat = UDPSink::FormatUSB;
                ui->fmDeviation->setEnabled(false);
                break;
            case 5:
                sampleFormat = UDPSink::FormatLSBMono;
                ui->fmDeviation->setEnabled(false);
                break;
            case 6:
                sampleFormat = UDPSink::FormatUSBMono;
                ui->fmDeviation->setEnabled(false);
                break;
            case 7:
                sampleFormat = UDPSink::FormatAMMono;
                ui->fmDeviation->setEnabled(false);
                break;
            default:
                sampleFormat = UDPSink::FormatS16LE;
                ui->fmDeviation->setEnabled(false);
                break;
        }

        m_sampleFormat = sampleFormat;
        m_inputSampleRate = inputSampleRate;
        m_rfBandwidth = rfBandwidth;
        m_fmDeviation = fmDeviation;
        m_udpPort = udpPort;

        m_udpSink->configure(m_udpSink->getInputMessageQueue(),
            sampleFormat,
            inputSampleRate,
            rfBandwidth,
            fmDeviation,
            m_udpAddress,
            udpPort,
            ui->channelMute->isChecked(),
            ui->gain->value() / 10.0f,
            ui->squelch->value() * 1.0f,
            ui->squelchGate->value() * 0.01f,
            ui->squelch->value() != -100,
            force);

        ui->applyBtn->setEnabled(false);
    }
}

void UDPSinkGUI::displaySettings()
{
    ui->gainText->setText(tr("%1").arg(ui->gain->value()/10.0, 0, 'f', 1));
    ui->squelchText->setText(tr("%1").arg(ui->squelch->value()*1.0, 0, 'f', 0));
    ui->squelchGateText->setText(tr("%1").arg(ui->squelchGate->value()*10.0, 0, 'f', 0));
}

void UDPSinkGUI::channelMarkerChanged()
{
    this->setWindowTitle(m_channelMarker.getTitle());
    applySettings();
}

void UDPSinkGUI::on_deltaFrequency_changed(qint64 value)
{
    m_channelMarker.setCenterFrequency(value);
}

void UDPSinkGUI::on_sampleFormat_currentIndexChanged(int index)
{
    if ((index == 1) || (index == 2)) {
        ui->fmDeviation->setEnabled(true);
    } else {
        ui->fmDeviation->setEnabled(false);
    }

    ui->applyBtn->setEnabled(true);
}

void UDPSinkGUI::on_sampleRate_textEdited(const QString& arg1 __attribute__((unused)))
{
    ui->applyBtn->setEnabled(true);
}

void UDPSinkGUI::on_rfBandwidth_textEdited(const QString& arg1 __attribute__((unused)))
{
    ui->applyBtn->setEnabled(true);
}

void UDPSinkGUI::on_fmDeviation_textEdited(const QString& arg1 __attribute__((unused)))
{
    ui->applyBtn->setEnabled(true);
}

void UDPSinkGUI::on_udpAddress_textEdited(const QString& arg1 __attribute__((unused)))
{
    ui->applyBtn->setEnabled(true);
}

void UDPSinkGUI::on_udpPort_textEdited(const QString& arg1 __attribute__((unused)))
{
    ui->applyBtn->setEnabled(true);
}

void UDPSinkGUI::on_gain_valueChanged(int value)
{
    ui->gainText->setText(tr("%1").arg(value/10.0, 0, 'f', 1));
    applySettings();
}

void UDPSinkGUI::on_squelch_valueChanged(int value)
{
    if (value == -100) // means disabled
    {
        ui->squelchText->setText("---");
    }
    else
    {
        ui->squelchText->setText(tr("%1").arg(value*1.0, 0, 'f', 0));
    }

    applySettings();
}

void UDPSinkGUI::on_squelchGate_valueChanged(int value)
{
    ui->squelchGateText->setText(tr("%1").arg(value*10.0, 0, 'f', 0));
    applySettings();
}

void UDPSinkGUI::on_channelMute_toggled(bool checked __attribute__((unused)))
{
    applySettings();
}

void UDPSinkGUI::on_applyBtn_clicked()
{
    applySettings();
}

void UDPSinkGUI::on_resetUDPReadIndex_clicked()
{
    m_udpSink->resetReadIndex(m_udpSink->getInputMessageQueue());
}

void UDPSinkGUI::onWidgetRolled(QWidget* widget, bool rollDown)
{
    if ((widget == ui->spectrumBox) && (m_udpSink != 0))
    {
        m_udpSink->setSpectrum(m_udpSink->getInputMessageQueue(), rollDown);
    }
}

void UDPSinkGUI::onMenuDoubleClicked()
{
    if (!m_basicSettingsShown)
    {
        m_basicSettingsShown = true;
        BasicChannelSettingsWidget* bcsw = new BasicChannelSettingsWidget(&m_channelMarker, this);
        bcsw->show();
    }
}

void UDPSinkGUI::leaveEvent(QEvent*)
{
    blockApplySettings(true);
    m_channelMarker.setHighlighted(false);
    blockApplySettings(false);
}

void UDPSinkGUI::enterEvent(QEvent*)
{
    blockApplySettings(true);
    m_channelMarker.setHighlighted(true);
    blockApplySettings(false);
}

void UDPSinkGUI::tick()
{
    m_channelPowerAvg.feed(m_udpSink->getMagSq());
    m_inPowerAvg.feed(m_udpSink->getInMagSq());

    if (m_tickCount % 4 == 0)
    {
        double powDb = CalcDb::dbPower(m_channelPowerAvg.average());
        ui->channelPower->setText(tr("%1 dB").arg(powDb, 0, 'f', 1));
        double inPowDb = CalcDb::dbPower(m_inPowerAvg.average());
        ui->inputPower->setText(tr("%1").arg(inPowDb, 0, 'f', 1));
    }

    int32_t bufferGauge = m_udpSink->getBufferGauge();
    ui->bufferGaugeNegative->setValue((bufferGauge < 0 ? -bufferGauge : 0));
    ui->bufferGaugePositive->setValue((bufferGauge < 0 ? 0 : bufferGauge));
    QString s = QString::number(bufferGauge, 'f', 0);
    ui->bufferRWBalanceText->setText(tr("%1").arg(s));

    if (m_udpSink->getSquelchOpen()) {
        ui->channelMute->setStyleSheet("QToolButton { background-color : green; }");
    } else {
        ui->channelMute->setStyleSheet("QToolButton { background:rgb(79,79,79); }");
    }

    m_tickCount++;
}