///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2021 Jon Beniston, M7RCE                                        //
// Copyright (C) 2020 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                  //
// (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 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 <QDebug>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QBuffer>

#include "SWGFeatureSettings.h"
#include "SWGFeatureReport.h"
#include "SWGFeatureActions.h"
#include "SWGDeviceState.h"

#include "dsp/dspengine.h"

#include "startrackerworker.h"
#include "startracker.h"

MESSAGE_CLASS_DEFINITION(StarTracker::MsgConfigureStarTracker, Message)
MESSAGE_CLASS_DEFINITION(StarTracker::MsgStartStop, Message)

const char* const StarTracker::m_featureIdURI = "sdrangel.feature.startracker";
const char* const StarTracker::m_featureId = "StarTracker";

StarTracker::StarTracker(WebAPIAdapterInterface *webAPIAdapterInterface) :
    Feature(m_featureIdURI, webAPIAdapterInterface)
{
    qDebug("StarTracker::StarTracker: webAPIAdapterInterface: %p", webAPIAdapterInterface);
    setObjectName(m_featureId);
    m_worker = new StarTrackerWorker(this, webAPIAdapterInterface);
    m_state = StIdle;
    m_errorMessage = "StarTracker error";
    m_networkManager = new QNetworkAccessManager();
    connect(m_networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(networkManagerFinished(QNetworkReply*)));
}

StarTracker::~StarTracker()
{
    disconnect(m_networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(networkManagerFinished(QNetworkReply*)));
    delete m_networkManager;
    if (m_worker->isRunning()) {
        stop();
    }

    delete m_worker;
}

void StarTracker::start()
{
    qDebug("StarTracker::start");

    m_worker->reset();
    m_worker->setMessageQueueToFeature(getInputMessageQueue());
    m_worker->setMessageQueueToGUI(getMessageQueueToGUI());
    bool ok = m_worker->startWork();
    m_state = ok ? StRunning : StError;
    m_thread.start();

    StarTrackerWorker::MsgConfigureStarTrackerWorker *msg = StarTrackerWorker::MsgConfigureStarTrackerWorker::create(m_settings, true);
    m_worker->getInputMessageQueue()->push(msg);
}

void StarTracker::stop()
{
    qDebug("StarTracker::stop");
    m_worker->stopWork();
    m_state = StIdle;
    m_thread.quit();
    m_thread.wait();
}

bool StarTracker::handleMessage(const Message& cmd)
{
    if (MsgConfigureStarTracker::match(cmd))
    {
        MsgConfigureStarTracker& cfg = (MsgConfigureStarTracker&) cmd;
        qDebug() << "StarTracker::handleMessage: MsgConfigureStarTracker";
        applySettings(cfg.getSettings(), cfg.getForce());

        return true;
    }
    else if (MsgStartStop::match(cmd))
    {
        MsgStartStop& cfg = (MsgStartStop&) cmd;
        qDebug() << "StarTracker::handleMessage: MsgStartStop: start:" << cfg.getStartStop();

        if (cfg.getStartStop()) {
            start();
        } else {
            stop();
        }

        return true;
    }
    else
    {
        return false;
    }
}

QByteArray StarTracker::serialize() const
{
    return m_settings.serialize();
}

bool StarTracker::deserialize(const QByteArray& data)
{
    if (m_settings.deserialize(data))
    {
        MsgConfigureStarTracker *msg = MsgConfigureStarTracker::create(m_settings, true);
        m_inputMessageQueue.push(msg);
        return true;
    }
    else
    {
        m_settings.resetToDefaults();
        MsgConfigureStarTracker *msg = MsgConfigureStarTracker::create(m_settings, true);
        m_inputMessageQueue.push(msg);
        return false;
    }
}

void StarTracker::applySettings(const StarTrackerSettings& settings, bool force)
{
    qDebug() << "StarTracker::applySettings:"
            << " m_target: " << settings.m_target
            << " m_ra: " << settings.m_ra
            << " m_dec: " << settings.m_dec
            << " m_latitude: " << settings.m_latitude
            << " m_longitude: " << settings.m_longitude
            << " m_serverPort: " << settings.m_serverPort
            << " m_enableServer: " << settings.m_enableServer
            << " m_title: " << settings.m_title
            << " m_rgbColor: " << settings.m_rgbColor
            << " m_useReverseAPI: " << settings.m_useReverseAPI
            << " m_reverseAPIAddress: " << settings.m_reverseAPIAddress
            << " m_reverseAPIPort: " << settings.m_reverseAPIPort
            << " m_reverseAPIFeatureSetIndex: " << settings.m_reverseAPIFeatureSetIndex
            << " m_reverseAPIFeatureIndex: " << settings.m_reverseAPIFeatureIndex
            << " force: " << force;

    QList<QString> reverseAPIKeys;

    if ((m_settings.m_target != settings.m_target) || force) {
        reverseAPIKeys.append("target");
    }
    if ((m_settings.m_ra != settings.m_ra) || force) {
        reverseAPIKeys.append("ra");
    }
    if ((m_settings.m_dec != settings.m_dec) || force) {
        reverseAPIKeys.append("dec");
    }
    if ((m_settings.m_latitude != settings.m_latitude) || force) {
        reverseAPIKeys.append("latitude");
    }
    if ((m_settings.m_longitude != settings.m_longitude) || force) {
        reverseAPIKeys.append("longitude");
    }
    if ((m_settings.m_dateTime != settings.m_dateTime) || force) {
        reverseAPIKeys.append("dateTime");
    }
    if ((m_settings.m_refraction != settings.m_refraction) || force) {
        reverseAPIKeys.append("refraction");
    }
    if ((m_settings.m_pressure != settings.m_pressure) || force) {
        reverseAPIKeys.append("pressure");
    }
    if ((m_settings.m_temperature != settings.m_temperature) || force) {
        reverseAPIKeys.append("temperature");
    }
    if ((m_settings.m_humidity != settings.m_humidity) || force) {
        reverseAPIKeys.append("humidity");
    }
    if ((m_settings.m_heightAboveSeaLevel != settings.m_heightAboveSeaLevel) || force) {
        reverseAPIKeys.append("heightAboveSeaLevel");
    }
    if ((m_settings.m_temperatureLapseRate != settings.m_temperatureLapseRate) || force) {
        reverseAPIKeys.append("temperatureLapseRate");
    }
    if ((m_settings.m_frequency != settings.m_frequency) || force) {
        reverseAPIKeys.append("frequency");
    }
    if ((m_settings.m_serverPort != settings.m_serverPort) || force) {
        reverseAPIKeys.append("stellariumPort");
    }
    if ((m_settings.m_enableServer != settings.m_enableServer) || force) {
        reverseAPIKeys.append("stellariumServerEnabled");
    }
    if ((m_settings.m_updatePeriod != settings.m_updatePeriod) || force) {
        reverseAPIKeys.append("updatePeriod");
    }
    if ((m_settings.m_jnow != settings.m_jnow) || force) {
        reverseAPIKeys.append("epoch");
    }
    if ((m_settings.m_title != settings.m_title) || force) {
        reverseAPIKeys.append("title");
    }
    if ((m_settings.m_rgbColor != settings.m_rgbColor) || force) {
        reverseAPIKeys.append("rgbColor");
    }

    StarTrackerWorker::MsgConfigureStarTrackerWorker *msg = StarTrackerWorker::MsgConfigureStarTrackerWorker::create(
        settings, force
    );
    m_worker->getInputMessageQueue()->push(msg);

    if (settings.m_useReverseAPI)
    {
        bool fullUpdate = ((m_settings.m_useReverseAPI != settings.m_useReverseAPI) && settings.m_useReverseAPI) ||
                (m_settings.m_reverseAPIAddress != settings.m_reverseAPIAddress) ||
                (m_settings.m_reverseAPIPort != settings.m_reverseAPIPort) ||
                (m_settings.m_reverseAPIFeatureSetIndex != settings.m_reverseAPIFeatureSetIndex) ||
                (m_settings.m_reverseAPIFeatureIndex != settings.m_reverseAPIFeatureIndex);
        webapiReverseSendSettings(reverseAPIKeys, settings, fullUpdate || force);
    }

    m_settings = settings;
}

int StarTracker::webapiRun(bool run,
    SWGSDRangel::SWGDeviceState& response,
    QString& errorMessage)
{
    (void) errorMessage;
    getFeatureStateStr(*response.getState());
    MsgStartStop *msg = MsgStartStop::create(run);
    getInputMessageQueue()->push(msg);
    return 202;
}

int StarTracker::webapiSettingsGet(
    SWGSDRangel::SWGFeatureSettings& response,
    QString& errorMessage)
{
    (void) errorMessage;
    response.setStarTrackerSettings(new SWGSDRangel::SWGStarTrackerSettings());
    response.getStarTrackerSettings()->init();
    webapiFormatFeatureSettings(response, m_settings);
    return 200;
}

int StarTracker::webapiSettingsPutPatch(
    bool force,
    const QStringList& featureSettingsKeys,
    SWGSDRangel::SWGFeatureSettings& response,
    QString& errorMessage)
{
    (void) errorMessage;
    StarTrackerSettings settings = m_settings;
    webapiUpdateFeatureSettings(settings, featureSettingsKeys, response);

    MsgConfigureStarTracker *msg = MsgConfigureStarTracker::create(settings, force);
    m_inputMessageQueue.push(msg);

    qDebug("StarTracker::webapiSettingsPutPatch: forward to GUI: %p", m_guiMessageQueue);
    if (m_guiMessageQueue) // forward to GUI if any
    {
        MsgConfigureStarTracker *msgToGUI = MsgConfigureStarTracker::create(settings, force);
        m_guiMessageQueue->push(msgToGUI);
    }

    webapiFormatFeatureSettings(response, settings);
    return 200;
}

void StarTracker::webapiFormatFeatureSettings(
    SWGSDRangel::SWGFeatureSettings& response,
    const StarTrackerSettings& settings)
{
    response.getStarTrackerSettings()->setTarget(new QString(settings.m_target));
    response.getStarTrackerSettings()->setRa(new QString(settings.m_ra));
    response.getStarTrackerSettings()->setDec(new QString(settings.m_dec));
    response.getStarTrackerSettings()->setLatitude(settings.m_latitude);
    response.getStarTrackerSettings()->setLongitude(settings.m_longitude);
    response.getStarTrackerSettings()->setDateTime(new QString(settings.m_dateTime));
    response.getStarTrackerSettings()->setRefraction(new QString(settings.m_refraction));
    response.getStarTrackerSettings()->setPressure(settings.m_pressure);
    response.getStarTrackerSettings()->setTemperature(settings.m_temperature);
    response.getStarTrackerSettings()->setHumidity(settings.m_humidity);
    response.getStarTrackerSettings()->setHeightAboveSeaLevel(settings.m_heightAboveSeaLevel);
    response.getStarTrackerSettings()->setTemperatureLapseRate(settings.m_temperatureLapseRate);
    response.getStarTrackerSettings()->setFrequency(settings.m_frequency/1000000.0);
    response.getStarTrackerSettings()->setStellariumServerEnabled(settings.m_enableServer ? 1 : 0);
    response.getStarTrackerSettings()->setStellariumPort(settings.m_serverPort);
    response.getStarTrackerSettings()->setUpdatePeriod(settings.m_updatePeriod);
    response.getStarTrackerSettings()->setEpoch(settings.m_jnow ? new QString("JNOW") : new QString("J2000"));

    if (response.getStarTrackerSettings()->getTitle()) {
        *response.getStarTrackerSettings()->getTitle() = settings.m_title;
    } else {
        response.getStarTrackerSettings()->setTitle(new QString(settings.m_title));
    }

    response.getStarTrackerSettings()->setRgbColor(settings.m_rgbColor);
    response.getStarTrackerSettings()->setUseReverseApi(settings.m_useReverseAPI ? 1 : 0);

    if (response.getStarTrackerSettings()->getReverseApiAddress()) {
        *response.getStarTrackerSettings()->getReverseApiAddress() = settings.m_reverseAPIAddress;
    } else {
        response.getStarTrackerSettings()->setReverseApiAddress(new QString(settings.m_reverseAPIAddress));
    }

    response.getStarTrackerSettings()->setReverseApiPort(settings.m_reverseAPIPort);
    response.getStarTrackerSettings()->setReverseApiDeviceIndex(settings.m_reverseAPIFeatureSetIndex);
    response.getStarTrackerSettings()->setReverseApiChannelIndex(settings.m_reverseAPIFeatureIndex);
}

void StarTracker::webapiUpdateFeatureSettings(
    StarTrackerSettings& settings,
    const QStringList& featureSettingsKeys,
    SWGSDRangel::SWGFeatureSettings& response)
{
    if (featureSettingsKeys.contains("target")) {
        settings.m_target = *response.getStarTrackerSettings()->getTarget();
    }
    if (featureSettingsKeys.contains("ra")) {
        settings.m_ra = *response.getStarTrackerSettings()->getRa();
    }
    if (featureSettingsKeys.contains("dec")) {
        settings.m_dec = *response.getStarTrackerSettings()->getDec();
    }
    if (featureSettingsKeys.contains("latitude")) {
        settings.m_latitude = response.getStarTrackerSettings()->getLatitude();
    }
    if (featureSettingsKeys.contains("longitude")) {
        settings.m_longitude = response.getStarTrackerSettings()->getLongitude();
    }
    if (featureSettingsKeys.contains("dateTime")) {
        settings.m_dateTime = *response.getStarTrackerSettings()->getDateTime();
    }
    if (featureSettingsKeys.contains("pressure")) {
        settings.m_pressure = response.getStarTrackerSettings()->getPressure();
    }
    if (featureSettingsKeys.contains("temperature")) {
        settings.m_temperature = response.getStarTrackerSettings()->getTemperature();
    }
    if (featureSettingsKeys.contains("humidity")) {
        settings.m_humidity = response.getStarTrackerSettings()->getHumidity();
    }
    if (featureSettingsKeys.contains("heightAboveSeaLevel")) {
        settings.m_heightAboveSeaLevel = response.getStarTrackerSettings()->getHeightAboveSeaLevel();
    }
    if (featureSettingsKeys.contains("temperatureLapseRate")) {
        settings.m_temperatureLapseRate = response.getStarTrackerSettings()->getTemperatureLapseRate();
    }
    if (featureSettingsKeys.contains("frequency")) {
        settings.m_frequency = response.getStarTrackerSettings()->getFrequency() * 100000.0;
    }
    if (featureSettingsKeys.contains("stellariumServerEnabled")) {
        settings.m_enableServer = response.getStarTrackerSettings()->getStellariumServerEnabled() == 1;
    }
    if (featureSettingsKeys.contains("stellariumPort")) {
        settings.m_serverPort = response.getStarTrackerSettings()->getStellariumPort();
    }
    if (featureSettingsKeys.contains("updatePeriod")) {
        settings.m_updatePeriod = response.getStarTrackerSettings()->getUpdatePeriod();
    }
    if (featureSettingsKeys.contains("epoch")) {
        settings.m_jnow = *response.getStarTrackerSettings()->getEpoch() == "JNOW";
    }
    if (featureSettingsKeys.contains("title")) {
        settings.m_title = *response.getStarTrackerSettings()->getTitle();
    }
    if (featureSettingsKeys.contains("rgbColor")) {
        settings.m_rgbColor = response.getStarTrackerSettings()->getRgbColor();
    }
    if (featureSettingsKeys.contains("useReverseAPI")) {
        settings.m_useReverseAPI = response.getStarTrackerSettings()->getUseReverseApi() != 0;
    }
    if (featureSettingsKeys.contains("reverseAPIAddress")) {
        settings.m_reverseAPIAddress = *response.getStarTrackerSettings()->getReverseApiAddress();
    }
    if (featureSettingsKeys.contains("reverseAPIPort")) {
        settings.m_reverseAPIPort = response.getStarTrackerSettings()->getReverseApiPort();
    }
    if (featureSettingsKeys.contains("reverseAPIDeviceIndex")) {
        settings.m_reverseAPIFeatureSetIndex = response.getStarTrackerSettings()->getReverseApiDeviceIndex();
    }
    if (featureSettingsKeys.contains("reverseAPIChannelIndex")) {
        settings.m_reverseAPIFeatureIndex = response.getStarTrackerSettings()->getReverseApiChannelIndex();
    }
}

void StarTracker::webapiReverseSendSettings(QList<QString>& featureSettingsKeys, const StarTrackerSettings& settings, bool force)
{
    SWGSDRangel::SWGFeatureSettings *swgFeatureSettings = new SWGSDRangel::SWGFeatureSettings();
    // swgFeatureSettings->setOriginatorFeatureIndex(getIndexInDeviceSet());
    // swgFeatureSettings->setOriginatorFeatureSetIndex(getDeviceSetIndex());
    swgFeatureSettings->setFeatureType(new QString("StarTracker"));
    swgFeatureSettings->setStarTrackerSettings(new SWGSDRangel::SWGStarTrackerSettings());
    SWGSDRangel::SWGStarTrackerSettings *swgStarTrackerSettings = swgFeatureSettings->getStarTrackerSettings();

    // transfer data that has been modified. When force is on transfer all data except reverse API data

    if (featureSettingsKeys.contains("target") || force) {
        swgStarTrackerSettings->setTarget(new QString(settings.m_target));
    }
    if (featureSettingsKeys.contains("ra") || force) {
        swgStarTrackerSettings->setRa(new QString(settings.m_ra));
    }
    if (featureSettingsKeys.contains("dec") || force) {
        swgStarTrackerSettings->setDec(new QString(settings.m_dec));
    }
    if (featureSettingsKeys.contains("latitude") || force) {
        swgStarTrackerSettings->setLatitude(settings.m_latitude);
    }
    if (featureSettingsKeys.contains("longitude") || force) {
        swgStarTrackerSettings->setLongitude(settings.m_longitude);
    }
    if (featureSettingsKeys.contains("dateTime") || force) {
        swgStarTrackerSettings->setDateTime(new QString(settings.m_dateTime));
    }
    if (featureSettingsKeys.contains("pressure") || force) {
        swgStarTrackerSettings->setPressure(settings.m_pressure);
    }
    if (featureSettingsKeys.contains("temperature") || force) {
        swgStarTrackerSettings->setTemperature(settings.m_temperature);
    }
    if (featureSettingsKeys.contains("humidity") || force) {
        swgStarTrackerSettings->setHumidity(settings.m_humidity);
    }
    if (featureSettingsKeys.contains("heightAboveSeaLevel") || force) {
        swgStarTrackerSettings->setHeightAboveSeaLevel(settings.m_heightAboveSeaLevel);
    }
    if (featureSettingsKeys.contains("temperatureLapseRate") || force) {
        swgStarTrackerSettings->setTemperatureLapseRate(settings.m_temperatureLapseRate);
    }
    if (featureSettingsKeys.contains("frequency") || force) {
        swgStarTrackerSettings->setFrequency(settings.m_frequency / 1000000.0);
    }
    if (featureSettingsKeys.contains("stellariumServerEnabled") || force) {
        swgStarTrackerSettings->setStellariumServerEnabled(settings.m_enableServer ? 1 : 0);
    }
    if (featureSettingsKeys.contains("stellariumPort") || force) {
        swgStarTrackerSettings->setStellariumPort(settings.m_serverPort);
    }
    if (featureSettingsKeys.contains("updatePeriod") || force) {
        swgStarTrackerSettings->setUpdatePeriod(settings.m_updatePeriod);
    }
    if (featureSettingsKeys.contains("epoch") || force) {
        swgStarTrackerSettings->setEpoch(settings.m_jnow ? new QString("JNOW") : new QString("J2000"));
    }
    if (featureSettingsKeys.contains("title") || force) {
        swgStarTrackerSettings->setTitle(new QString(settings.m_title));
    }
    if (featureSettingsKeys.contains("rgbColor") || force) {
        swgStarTrackerSettings->setRgbColor(settings.m_rgbColor);
    }

    QString channelSettingsURL = QString("http://%1:%2/sdrangel/featureset/%3/feature/%4/settings")
            .arg(settings.m_reverseAPIAddress)
            .arg(settings.m_reverseAPIPort)
            .arg(settings.m_reverseAPIFeatureSetIndex)
            .arg(settings.m_reverseAPIFeatureIndex);
    m_networkRequest.setUrl(QUrl(channelSettingsURL));
    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");

    QBuffer *buffer = new QBuffer();
    buffer->open((QBuffer::ReadWrite));
    buffer->write(swgFeatureSettings->asJson().toUtf8());
    buffer->seek(0);

    // Always use PATCH to avoid passing reverse API settings
    QNetworkReply *reply = m_networkManager->sendCustomRequest(m_networkRequest, "PATCH", buffer);
    buffer->setParent(reply);

    delete swgFeatureSettings;
}

void StarTracker::networkManagerFinished(QNetworkReply *reply)
{
    QNetworkReply::NetworkError replyError = reply->error();

    if (replyError)
    {
        qWarning() << "StarTracker::networkManagerFinished:"
                << " error(" << (int) replyError
                << "): " << replyError
                << ": " << reply->errorString();
    }
    else
    {
        QString answer = reply->readAll();
        answer.chop(1); // remove last \n
        qDebug("StarTracker::networkManagerFinished: reply:\n%s", answer.toStdString().c_str());
    }

    reply->deleteLater();
}