#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QTime>
#include <QMessageBox>
#include <QThread>

#define SEARCH_STR_STIMULUS "StimulusCode "

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    PCIP_1 = 0; PCIP_2 = 0; PCIP_3 = 0; PCIP_4 = 0;

    FeatherIP_1 = 0; FeatherIP_2 = 0; FeatherIP_3 = 0; FeatherIP_4 = 0;


    //default
    PCIP_full = QHostAddress("127.0.0.1");
    PCPort = 5001;
    FeatherIP_full = QHostAddress("192.168.4.1");
    FeatherPort = 8888;

    udpSocket_PC = new QUdpSocket(this);
    udpSocket_Feather = new QUdpSocket(this); //no binding to socket needed. Just send data!

    stylesheet_tac_marked = "QLabel {background-color: rgb(0,170,0);}";
    stylesheet_tac_unmarked = "QLabel {background-color: white;}";

    logBCIData = true;
    tac1ON = false;
    tac2ON = false;
    tac3ON = false;
    tac4ON = false;
    tac5ON = false;
    tac6ON = false;

    lastBufferStr = "0";

    setupSignalsAndSlots();
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::setupSignalsAndSlots()
{
    connect(ui->push_Apply, SIGNAL(clicked()), this, SLOT(applyButton()));
    connect(udpSocket_PC, SIGNAL(readyRead()), this, SLOT(readPCSocketData()));
    connect(ui->check_LogBCI, SIGNAL(toggled(bool)), this, SLOT(setLogBCIData(bool)));
    connect(ui->push_ClearLog, SIGNAL(clicked()), this, SLOT(clearLog()));

    connect(ui->push_Tac1, SIGNAL(clicked(bool)), this, SLOT(pushTac1(bool)));
    connect(ui->push_Tac2, SIGNAL(clicked(bool)), this, SLOT(pushTac2(bool)));
    connect(ui->push_Tac3, SIGNAL(clicked(bool)), this, SLOT(pushTac3(bool)));
    connect(ui->push_Tac4, SIGNAL(clicked(bool)), this, SLOT(pushTac4(bool)));
    connect(ui->push_Tac5, SIGNAL(clicked(bool)), this, SLOT(pushTac5(bool)));
    connect(ui->push_Tac6, SIGNAL(clicked(bool)), this, SLOT(pushTac6(bool)));
    connect(ui->push_allLOW, SIGNAL(clicked()), this, SLOT(allLOW()));
    connect(ui->push_allHIGH, SIGNAL(clicked()), this, SLOT(allHIGH()));
}

void MainWindow::log(QString logtext)
{
    QString output = "[" + getCurrentTime() + "] " + logtext;
    ui->plain_Log->appendPlainText(output);
}

QString MainWindow::getCurrentTime()
{
    QString currenttime = QTime::currentTime().toString("HH:mm:ss");
    return currenttime;
}

void MainWindow::applyButton()
{
    if(ui->check_ClearLog->isChecked())
    {
        ui->plain_Log->clear();
    }

    bindPC();
    setupFeather();
}

void MainWindow::bindPC()
{
    if(udpSocket_PC->state() == QAbstractSocket::BoundState)
    {
        udpSocket_PC->abort();
    }

    QString tmp_PCIP_full = buildPCIP();
    if(tmp_PCIP_full == "0") {
        log("Please try another IP address");
    } else {
        PCIP_full = QHostAddress(tmp_PCIP_full);
        PCPort = ui->line_PCPort->text().toUShort(nullptr,10);
        if(checkPort(PCPort))
        {
            log("Receive socket BCI-Stream set to:");
            log("-- PC-IP: " + PCIP_full.toString());
            log("-- PC-Port: " + QString::number(PCPort));

            if(udpSocket_PC->bind(PCIP_full, PCPort))
            {
                log("UDP PC socket: successfully bound.");
            } else {
                log("!! UDP PC socket: binding error !!");
            }
        } else {
            PCPort = 00000;
            ui->line_PCPort->setText("00000");
            log("!! PC Port not valid !!");
            QMessageBox::critical(this,
                                  "PC Port not valid",
                                  "PC Port is not valid. Please make sure that the port is a number between 0 and 65535.");
        }
    }    
}

void MainWindow::setupFeather()
{
    QString tmp_FeatherIP_full = buildFeatherIP();
    if(tmp_FeatherIP_full == "0") {
        log("Please try another IP address");
    } else {
        FeatherIP_full = QHostAddress(tmp_FeatherIP_full);
        FeatherPort = ui->line_FeatherPort->text().toUShort(nullptr,10);
        if(checkPort(FeatherPort))
        {
            log("Receive socket Adafruit Feather set to:");
            log("-- Feather-IP: " + FeatherIP_full.toString());
            log("-- Feather-Port: " + QString::number(FeatherPort));
        } else {
            FeatherPort = 00000;
            ui->line_FeatherPort->setText("00000");
            log("!! Port not valid !!");
            QMessageBox::critical(this,
                                  "Feather Port not valid",
                                  "Feather Port is not valid. Please make sure that the port is a number between 0 and 65535.");

        }
    }
}

bool MainWindow::checkPort(const quint16 port)
{
    bool valid = false;
    if(port)
    {
        valid = true;
    }
    return valid;
}

QString MainWindow::buildPCIP()
{
    int PCIP1 = ui->line_PCIP1->text().toInt();
    int PCIP2 = ui->line_PCIP2->text().toInt();
    int PCIP3 = ui->line_PCIP3->text().toInt();
    int PCIP4 = ui->line_PCIP4->text().toInt();

    if(
            ((PCIP1 < 0) || (PCIP1 > 255))
            || ((PCIP2 < 0) || (PCIP2 > 255))
            || ((PCIP3 < 0) || (PCIP3 > 255))
            || ((PCIP4 < 0) || (PCIP4 > 255))
            )
    {
        QMessageBox::critical(this,
                              "PC IP address not valid",
                              "PC IP address is not valid. Please make sure that the IP components only consist of numbers between 0 and 255.");
        log("!! Error while setting PC IP !!");
        return "0";
    } else {
        QString IP = QString::number(PCIP1) + "."
                + QString::number(PCIP2) + "."
                + QString::number(PCIP3) + "."
                + QString::number(PCIP4);
        return IP;
    }
}

QString MainWindow::buildFeatherIP()
{
    int FeatherIP1 = ui->line_FeatherIP1->text().toInt();
    int FeatherIP2 = ui->line_FeatherIP2->text().toInt();
    int FeatherIP3 = ui->line_FeatherIP3->text().toInt();
    int FeatherIP4 = ui->line_FeatherIP4->text().toInt();

    if(
            ((FeatherIP1 < 0) || (FeatherIP1 > 255))
            || ((FeatherIP2 < 0) || (FeatherIP2 > 255))
            || ((FeatherIP3 < 0) || (FeatherIP3 > 255))
            || ((FeatherIP4 < 0) || (FeatherIP4 > 255))
            )
    {
        QMessageBox::critical(this,
                              "Feather IP address not valid",
                              "Feather IP address is not valid. Please make sure that the IP components only consist of numbers between 0 and 255.");
        log("!! Error while setting Feather IP !!");
        return "0";
    } else {
        QString IP = QString::number(FeatherIP1) + "."
                + QString::number(FeatherIP2) + "."
                + QString::number(FeatherIP3) + "."
                + QString::number(FeatherIP4);
        return IP;
    }
}

void MainWindow::readPCSocketData()
{
    QString bufferStr;
    while (udpSocket_PC->hasPendingDatagrams())
    {
        QByteArray buffer;
        buffer.resize(static_cast<int>(udpSocket_PC->pendingDatagramSize()));
        udpSocket_PC->readDatagram(buffer.data(), buffer.size());
        bufferStr = QString::fromStdString(buffer.toStdString());

        if(bufferStr.contains(SEARCH_STR_STIMULUS,Qt::CaseSensitive))
        {
            bufferStr.replace(SEARCH_STR_STIMULUS, "");
            if(!bufferStr.contains("0"))
            {
                ui->lineLastSymbol->setText(bufferStr);
            }

            if(logBCIData)
            {
                log(bufferStr);
            }


            if(ui->check_Tactile->isChecked())
            {
                markDirectionTactile(bufferStr);
            }

            if(bufferStr != lastBufferStr){
                QByteArray data = bufferStr.toUtf8();
                udpSocket_Feather->writeDatagram(data, FeatherIP_full, FeatherPort);
                lastBufferStr = bufferStr;
            }
        }
    }
}

void MainWindow::markDirectionTactile(const QString direction)
{
    unsigned int i_direction = direction.toUInt(nullptr,10);
    //qDebug() << i_direction;

    switch (i_direction) {
    case 0: //nothing
        ui->label_Tac1->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac2->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac3->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac4->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac5->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac6->setStyleSheet(stylesheet_tac_unmarked);
        break;
    case 1: //Tac1
        ui->label_Tac1->setStyleSheet(stylesheet_tac_marked);
        ui->label_Tac2->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac3->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac4->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac5->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac6->setStyleSheet(stylesheet_tac_unmarked);
        break;
    case 2: //Tac2
        ui->label_Tac1->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac2->setStyleSheet(stylesheet_tac_marked);
        ui->label_Tac3->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac4->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac5->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac6->setStyleSheet(stylesheet_tac_unmarked);
        break;
    case 3: //Tac3
        ui->label_Tac1->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac2->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac3->setStyleSheet(stylesheet_tac_marked);
        ui->label_Tac4->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac5->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac6->setStyleSheet(stylesheet_tac_unmarked);
        break;
    case 4: //Tac4
        ui->label_Tac1->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac2->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac3->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac4->setStyleSheet(stylesheet_tac_marked);
        ui->label_Tac5->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac6->setStyleSheet(stylesheet_tac_unmarked);
        break;
    case 5: //Tac5
        ui->label_Tac1->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac2->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac3->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac4->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac5->setStyleSheet(stylesheet_tac_marked);
        ui->label_Tac6->setStyleSheet(stylesheet_tac_unmarked);
        break;
    case 6: //Tac6
        ui->label_Tac1->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac2->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac3->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac4->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac5->setStyleSheet(stylesheet_tac_unmarked);
        ui->label_Tac6->setStyleSheet(stylesheet_tac_marked);
        break;
    }
}

void MainWindow::setLogBCIData(const bool log)
{
    logBCIData = log;
}

void MainWindow::clearLog()
{
    ui->plain_Log->clear();
}

void MainWindow::pushTac1(const bool state)
{
    tac1ON = state;
    pushDirection();
}

void MainWindow::pushTac2(const bool state)
{
    tac2ON = state;
    pushDirection();

}

void MainWindow::pushTac3(const bool state)
{
    tac3ON = state;
    pushDirection();

}

void MainWindow::pushTac4(const bool state)
{
    tac4ON = state;
    pushDirection();
}

void MainWindow::pushTac5(const bool state)
{
    tac5ON = state;
    pushDirection();
}

void MainWindow::pushTac6(const bool state)
{
    tac6ON = state;
    pushDirection();
}

void MainWindow::pushDirection()
{
    //first switch off all
    udpSocket_Feather->writeDatagram(QByteArray::number(0), FeatherIP_full, FeatherPort);

    if(tac1ON)
        udpSocket_Feather->writeDatagram(QByteArray::number(1), FeatherIP_full, FeatherPort);

    if(tac2ON)
        udpSocket_Feather->writeDatagram(QByteArray::number(2), FeatherIP_full, FeatherPort);

    if(tac3ON)
        udpSocket_Feather->writeDatagram(QByteArray::number(3), FeatherIP_full, FeatherPort);

    if(tac4ON)
        udpSocket_Feather->writeDatagram(QByteArray::number(4), FeatherIP_full, FeatherPort);

    if(tac5ON)
        udpSocket_Feather->writeDatagram(QByteArray::number(5), FeatherIP_full, FeatherPort);

    if(tac6ON)
        udpSocket_Feather->writeDatagram(QByteArray::number(6), FeatherIP_full, FeatherPort);
}

void MainWindow::allLOW()
{
    udpSocket_Feather->writeDatagram(QByteArray::number(0), FeatherIP_full, FeatherPort);
    ui->push_Tac1->setChecked(false);
    ui->push_Tac2->setChecked(false);
    ui->push_Tac3->setChecked(false);
    ui->push_Tac4->setChecked(false);
    ui->push_Tac5->setChecked(false);
    ui->push_Tac6->setChecked(false);
}

void MainWindow::allHIGH()
{
    udpSocket_Feather->writeDatagram(QByteArray::number(1), FeatherIP_full, FeatherPort);
    udpSocket_Feather->writeDatagram(QByteArray::number(2), FeatherIP_full, FeatherPort);
    udpSocket_Feather->writeDatagram(QByteArray::number(3), FeatherIP_full, FeatherPort);
    udpSocket_Feather->writeDatagram(QByteArray::number(4), FeatherIP_full, FeatherPort);
    udpSocket_Feather->writeDatagram(QByteArray::number(5), FeatherIP_full, FeatherPort);
    udpSocket_Feather->writeDatagram(QByteArray::number(6), FeatherIP_full, FeatherPort);
    ui->push_Tac1->setChecked(true);
    ui->push_Tac2->setChecked(true);
    ui->push_Tac3->setChecked(true);
    ui->push_Tac4->setChecked(true);
    ui->push_Tac5->setChecked(true);
    ui->push_Tac6->setChecked(true);
}