#include "headers/climbingrace.h"

/*
 * manages:
 * - global state
 * - timers
 * - sounds
 * - next start action
 * - next start action delay progress
 * - settings (remote and local)
 */

ClimbingRace::ClimbingRace(QObject *parent) : QObject(parent)
{
    this->state = IDLE;
    this->mode = LOCAL;

    this->appSettings = new AppSettings(this);
    this->baseConn = new BaseConn(this);

    this->baseConn->setIP(pGlobalAppSettings->loadSetting("baseStationIpAdress"));
    connect(this->baseConn, &BaseConn::stateChanged, this, &ClimbingRace::baseStationStateChanged);
    connect(this->baseConn, &BaseConn::stateChanged, this, &ClimbingRace::refreshMode);
    connect(this->baseConn, &BaseConn::connectionsChanged, this, &ClimbingRace::baseStationConnectionsChanged);
    connect(this->baseConn, &BaseConn::gotUpdate, this, &ClimbingRace::handleBaseStationUpdate);
    connect(this->baseConn, &BaseConn::propertiesChanged, this, &ClimbingRace::baseStationPropertiesChanged);

    this->speedTimers.append( new SpeedTimer(this) );

    this->player = new QMediaPlayer;
    this->date = new QDateTime;

    this->nextStartActionTimer = new QTimer(this);
    nextStartActionTimer->setSingleShot(true);

    this->timerTextRefreshTimer = new QTimer(this);
    this->timerTextRefreshTimer->setInterval(1);
    this->timerTextRefreshTimer->setSingleShot(true);
    this->timerTextRefreshTimer->connect(this->timerTextRefreshTimer, &QTimer::timeout, this, &ClimbingRace::refreshTimerText);
    this->refreshTimerText();
}

// --------------------------
// --- Main Functionality ---
// --------------------------

int ClimbingRace::startRace() {

    if(this->state != IDLE) {
        return 904;
    }

    qDebug() << "+ --- starting race";

    int returnCode = 900;

    switch (this->mode) {
    case LOCAL:
    {

        this->setState(STARTING);

        this->nextStartAction = None;
        this->playSoundsAndStartRace();

        returnCode = 200;

        break;
    }
    case REMOTE:
    {
        QVariantMap reply = this->baseConn->sendCommand(1000);

        if(reply["status"] != 200){
            //handle Error!!
            returnCode = reply["status"].toInt();
        }
        else {

            returnCode = 200;

        }

        break;
    }
    }

    return returnCode;
}

int ClimbingRace::stopRace(int type) {

    if(this->state != RUNNING && this->state != STARTING) {
        return 904;
    }

    // type can be:
    // 0: stopp
    // 1: cancel
    // 2: fail (fase start)

    qDebug() << "+ --- stopping race";

    int returnCode = 900;

    switch (this->mode) {
    case LOCAL:
    {

        if(type == 1){
            this->nextStartActionTimer->stop();
            this->player->stop();
            this->nextStartAction = None;
        }

        returnCode = this->speedTimers[0]->stop(type) ? 200:904;

        if(returnCode == 200) {
            this->setState(STOPPED);
        }

        break;
    }
    case REMOTE:
    {
        QVariantMap reply = this->baseConn->sendCommand(1001);

        if(reply["status"] != 200){
            returnCode = reply["status"].toInt();
        }
        else {
            returnCode = 200;
        }

        break;
    }
    }

    return returnCode;
}

int ClimbingRace::resetRace() {

    if(this->state != STOPPED) {
        return 904;
    }

    qDebug() << "+ --- resetting race";

    int returnCode = 900;


    switch (this->mode) {
    case LOCAL:
    {
        returnCode = this->speedTimers[0]->reset() ? 200:904;

        if(returnCode == 200){
            this->setState(IDLE);
        }

        break;
    }
    case REMOTE:
    {

        QVariantMap reply = this->baseConn->sendCommand(1002);

        if(reply["status"] != 200){
            //handle Error!!
            returnCode = reply["status"].toInt();
        }
        else {
            returnCode = 200;
        }

        break;
    }
    }

    return returnCode;
}

// -------------------------
// --- Base Station sync ---
// -------------------------

/**
 * @brief ClimbingRace::handleBaseStationUpdate
 *
 * Function to handle a update, sent by the base station, which indicates
 * that some remote value (like a state) has changed
 *
 * @param data
 */
void ClimbingRace::handleBaseStationUpdate(QVariant data) {
    //qDebug() << "got update: " << data;
    int header = data.toMap()["header"].toInt();
    switch (header) {
    case 9000:
    {
        // the remote race state has changed
        this->setState( raceState( data.toMap()["data"].toInt() ) );
        break;
    }
    case 9001:
    {
        // the remote timers have changed
        this->refreshRemoteTimers(data.toMap()["data"].toList());
        break;
    }
    case 9002:
    {
        // the extension connections have changed
        this->baseConn->setConnections(data.toMap()["data"].toList());
        break;
    }
    case 9003:
    {
        // the next start action has changed
        this->nextStartActionTotalDelay = data.toMap()["data"].toMap()["nextActionDelay"].toDouble();
        this->nextStartActionDelayStartedAt = this->date->currentMSecsSinceEpoch() - (this->nextStartActionTotalDelay * data.toMap()["data"].toMap()["nextActionDelayProg"].toDouble());
        this->nextStartAction =  NextStartAction( data.toMap()["data"].toMap()["nextAction"].toInt() );

        emit this->nextStartActionChanged();
    }

    }
}

bool ClimbingRace::refreshRemoteTimers(QVariantList timers) {

        if(timers.length() != speedTimers.length()){
            // local timers are out of sync

            // delete all current timers
            foreach(SpeedTimer * locTimer, this->speedTimers){
                delete locTimer;
            }

            speedTimers.clear();

            foreach(QVariant remTimer, timers){
                // create a local timer for each remote timer
                this->speedTimers.append(new SpeedTimer(this));
            }
        }

        foreach(QVariant remTimer, timers){
            int currId = remTimer.toMap()["id"].toInt();
            speedTimers[currId]->startTime = this->date->currentMSecsSinceEpoch() - remTimer.toMap()["currTime"].toDouble();
            speedTimers[currId]->stoppedTime = remTimer.toMap()["currTime"].toDouble();
            speedTimers[currId]->reactionTime = remTimer.toMap()["reactTime"].toDouble();

            speedTimers[currId]->setState(SpeedTimer::timerState(remTimer.toMap()["state"].toInt()));
        }

        return true;

}

// ------------------------
// --- helper functions ---
// ------------------------

void ClimbingRace::playSoundsAndStartRace() {
    qDebug() << "next Action: " << nextStartAction;

    nextStartActionTimer->disconnect(nextStartActionTimer, SIGNAL(timeout()), this, SLOT(playSoundsAndStartRace()));

    switch (this->nextStartAction) {
    case AtYourMarks:
    {
        if(!playSound("qrc:/sounds/at_marks_1.wav")){
            return;
        }
        if(appSettings->loadSetting("ready_en") == "true"){
            nextStartAction = Ready;
            nextStartActionTimer->setInterval(appSettings->loadSetting("ready_delay").toInt() <= 0 ? 1:appSettings->loadSetting("ready_delay").toInt());
        }
        else{
            nextStartAction = Start;
            nextStartActionTimer->setInterval(1);
        }

        break;
    }
    case Ready:
    {
        if(!playSound("qrc:/sounds/ready_1.wav")){
            return;
        }
        nextStartAction = Start;
        nextStartActionTimer->setInterval(1);

        break;
    }
    case Start:
    {
        if(!playSound("qrc:/sounds/IFSC_STARTSIGNAL_SINE.wav")){
            return;
        }
        nextStartAction = None;
        nextStartActionTimer->disconnect(nextStartActionTimer, SIGNAL(timeout()), this, SLOT(playSoundsAndStartRace()));

        this->setState(RUNNING);
        speedTimers[0]->start();

        emit this->nextStartActionChanged();

        return;
    }
    case None:
    {
        this->speedTimers[0]->setState(SpeedTimer::STARTING);
        if(appSettings->loadSetting("at_marks_en") == "true"){
            nextStartAction = AtYourMarks;
            nextStartActionTimer->setInterval(appSettings->loadSetting("at_marks_delay").toInt() <= 0 ? 1:appSettings->loadSetting("at_marks_delay").toInt());
        }
        else if(appSettings->loadSetting("ready_en") == "true"){
            nextStartAction = Ready;
            nextStartActionTimer->setInterval(appSettings->loadSetting("ready_delay").toInt() <= 0 ? 1:appSettings->loadSetting("ready_delay").toInt());
        }
        else{
            nextStartAction = Start;
            nextStartActionTimer->setInterval(1);
        }

        break;
    }
    }

    emit this->nextStartActionChanged();

    nextStartActionTimer->connect(nextStartActionTimer, SIGNAL(timeout()), this, SLOT(playSoundsAndStartRace()));
    nextStartActionTimer->start();
}

bool ClimbingRace::playSound(QString path) {

    player->setMedia(QUrl(path));
    player->setVolume(50);
    player->play();

    QTimer timer;
    timer.setInterval(1);
    timer.setSingleShot(true);

    QEventLoop loop;
    loop.connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));

    while (player->mediaStatus() == QMediaPlayer::LoadingMedia || player->mediaStatus() == QMediaPlayer::BufferingMedia || player->mediaStatus() == QMediaPlayer::BufferedMedia) {
        timer.start();
        loop.exec();
    }

    if(player->mediaStatus() == QMediaPlayer::EndOfMedia){
        return true;
    }
    else {
        return false;
    }
}

void ClimbingRace::setState(raceState newState) {

    if(newState != this->state) {
        this->state = newState;
        this->stateChanged(newState);
    }
}

void ClimbingRace::refreshMode() {
    raceMode newMode;
    if(this->baseConn->state == "connected"){
        newMode = REMOTE;
    }
    else {
        newMode = LOCAL;
    }

    if(this->mode != newMode){

        if(newMode == LOCAL){
            // if the new mode is local -> connection to base station has been lost

            // reset race
            // reset state
            this->setState(IDLE);

            // reset timers
            // go back to one timer
            for (int i = 0;i<this->speedTimers.length();i++) {
                delete this->speedTimers[i];
            }

            this->speedTimers.clear();

            this->speedTimers.append(new SpeedTimer);

            // reset base conn
            // clear extensions
            this->baseConn->connections.clear();
        }

        this->mode = newMode;
        emit this->modeChanged();
    }

}

void ClimbingRace::refreshTimerText() {

    // --- refresh timer text ---

    QVariantList newTimerTextList;

    foreach(SpeedTimer * timer, this->speedTimers){
        QVariantMap timerMap = {{"text",timer->getText()}, {"reacttime", timer->reactionTime}, {"state", timer->getState()}, {"id", this->speedTimers.indexOf(timer)}};
        newTimerTextList.append(timerMap);
    }

    if(newTimerTextList != this->qmlTimers){
        this->qmlTimers = newTimerTextList;
        emit timerTextChanged();
    }

    // --- refresh next start action delay progress ---
    double nextStartActionRemainingDelay = 0;

    switch (this->mode) {
    case LOCAL: {

        // get remaining and total next start action delay time
        if(nextStartAction == 0){
            this->nextStartActionTotalDelay = appSettings->loadSetting("at_marks_delay").toDouble();
        }
        else if (nextStartAction == 1) {
            this->nextStartActionTotalDelay = appSettings->loadSetting("ready_delay").toDouble();
        }

        nextStartActionRemainingDelay = this->nextStartActionTimer->remainingTime();

        break;
    }
    case REMOTE: {

        // calculate remaining next start action delay time
        nextStartActionRemainingDelay = this->nextStartActionTotalDelay - ( this->date->currentMSecsSinceEpoch() - this->nextStartActionDelayStartedAt );
        break;
    }
    }

    // calculate next start action delay progress
    if(nextStartActionRemainingDelay > 0){
        this->nextStartActionDelayProgress = nextStartActionRemainingDelay / this->nextStartActionTotalDelay;
        emit this->nextStartActionDelayProgressChanged();
    }
    else {
        this->nextStartActionDelayProgress = 0;
        emit this->nextStartActionDelayProgressChanged();
    }


    /*if (this->mode == REMOTE && this->state == IDLE) {
        this->nextStartActionDelayProgress = 0;
        emit this->nextStartActionDelayProgressChanged();
    }*/

    this->timerTextRefreshTimer->start();
}

bool ClimbingRace::pairConnectedUsbExtensions() {
    QVariantMap ret = this->baseConn->sendCommand(5002, "", 10000);
    qDebug() << ret;
    return ret["status"] == 200;
}

// - athlete management -

QVariant ClimbingRace::getAthletes() {
    QVariantMap reply = this->baseConn->sendCommand(4003);

    if(reply["status"] != 200){
        //handle Error!!
        qDebug() << "+ --- error getting athletes: " << reply["status"];
        return false;
    }

    QVariantMap tmpAthletes = reply["data"].toMap();

    //qDebug() << tmpAthletes;

    return tmpAthletes;
}

bool ClimbingRace::createAthlete(QString userName, QString fullName) {

    QVariant requestData = QVariantMap({{"fullName", fullName}, {"userName", userName}});

    QVariantMap reply = this->baseConn->sendCommand(4001, requestData.toJsonValue());

    if(reply["status"] != 200){
        //handle Error!!
        qDebug() << "+ --- error creating athlete: " << reply["status"];
        return false;
    }

    return true;
}

bool ClimbingRace::deleteAthlete( QString userName ){

    QVariant requestData = QVariantMap({{"userName", userName}});

    QVariantMap reply = this->baseConn->sendCommand(4002, requestData.toJsonValue());

    if(reply["status"] != 200){
        //handle Error!!
        qDebug() << "+ --- error deleting athlete: " << reply["status"];
        return false;
    }

    return true;

}

bool ClimbingRace::selectAthlete( QString userName, int timerId ){

    QVariant requestData = QVariantMap({{"userName", userName}, {"timerId", timerId}});

    QVariantMap reply = this->baseConn->sendCommand(4000, requestData.toJsonValue());

    if(reply["status"] != 200){
        //handle Error!!
        qDebug() << "+ --- error selecting athlete: " << reply["status"];
        return false;
    }

    return true;

}

QVariant ClimbingRace::getResults( QString userName ){
    QVariantMap reply = this->baseConn->sendCommand(4004, userName);

    if(reply["status"] != 200){
        //handle Error!!
        qDebug() << "+ --- error getting results: " << reply["status"];
        return false;
    }

    QVariantList tmpAthletes = reply["data"].toList();

    //qDebug() << tmpAthletes;

    return tmpAthletes;
}

// -------------------------
// --- functions for qml ---
// -------------------------

int ClimbingRace::getState() {
    return this->state;
}

int ClimbingRace::getMode() {
    return this->mode;
}

QVariant ClimbingRace::getTimerTextList() {
    return this->qmlTimers;
}

double ClimbingRace::getNextStartActionDelayProgress() {
    return this->nextStartActionDelayProgress;
}

int ClimbingRace::getNextStartAction() {
    return this->nextStartAction;
}

void ClimbingRace::writeSetting(QString key, QVariant value) {
    this->refreshMode();

    if(this->mode == REMOTE && ( this->remoteSettings.contains(key) || this->remoteOnlySettings.contains(key) ) ){
        this->baseConn->writeRemoteSetting(key, value.toString());
    }
    else if(!this->remoteOnlySettings.contains(key)){
        this->appSettings->writeSetting(key, value);
    }
}

QString ClimbingRace::readSetting(QString key) {
    this->refreshMode();

    if(this->mode == REMOTE && ( this->remoteSettings.contains(key) || this->remoteOnlySettings.contains(key) )){
        QVariantMap reply = this->baseConn->sendCommand(3001, key);
        if(reply["status"] != 200){
            return "false";
        }
        return reply["data"].toString();
    }
    else if(!this->remoteOnlySettings.contains(key)){
        return this->appSettings->loadSetting(key);
    }
    else {
        return "false";
    }
}

void ClimbingRace::connectBaseStation() {
    this->reloadBaseStationIpAdress();
    this->baseConn->connectToHost();
}

void ClimbingRace::disconnectBaseStation() {
    this->baseConn->closeConnection();
}

QString ClimbingRace::getBaseStationState() {
    return this->baseConn->getState();
}

QVariant ClimbingRace::getBaseStationConnections() {
    return baseConn->getConnections();
}

QVariantMap ClimbingRace::getBaseStationProperties() {
    QVariantMap firmware = {{"version", this->baseConn->firmwareVersion}, {"upToDate", this->baseConn->firmwareUpToDate}};
    return {{"firmware", firmware}, {"timeOffset", this->baseConn->timeOffset}};
}

bool ClimbingRace::updateBasestationFirmware() {
    return this->baseConn->updateFirmware();
}

bool ClimbingRace::updateBasestationTime() {
    return this->baseConn->updateTime();
}

bool ClimbingRace::reloadBaseStationIpAdress() {
    if(this->baseConn->state == "disconnected"){
        this->baseConn->setIP(pGlobalAppSettings->loadSetting("baseStationIpAdress"));
        return true;
    }
    return false;
}