/*

  Copyright © 2015 Hasan Yavuz Özderya

  This file is part of serialplot.

  serialplot 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, either version 3 of the License, or

  (at your option) any later version.

  serialplot 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 for more details.

  You should have received a copy of the GNU General Public License

  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "portcontrol.h"

#include "ui_portcontrol.h"

#include <QSerialPortInfo>

#include <QKeySequence>

#include <QLabel>

#include <QtDebug>

#include "utils.h"

PortControl::PortControl(QSerialPort* port, QWidget* parent) :

    QWidget(parent),

    ui(new Ui::PortControl),

    portToolBar("Port"),

    openAction("Open", this)

{

    ui->setupUi(this);

    serialPort = port;

    // setup the toolbar

    openAction.setCheckable(true);

    openAction.setShortcut(QKeySequence("F2"));

    openAction.setToolTip("Open Port (F2)");

    QObject::connect(&openAction, &QAction::triggered,

                     this, &PortControl::openActionTriggered);

    portToolBar.addWidget(&tbPortList);

    portToolBar.addAction(&openAction);

    // setup port selection widgets

    tbPortList.setModel(&portList);

    ui->cbPortList->setModel(&portList);

    QObject::connect(ui->cbPortList,

                     SELECT<int>::OVERLOAD_OF(&QComboBox::activated),

                     this, &PortControl::onCbPortListActivated);

    QObject::connect(&tbPortList,

                     SELECT<int>::OVERLOAD_OF(&QComboBox::activated),

                     this, &PortControl::onTbPortListActivated);

    QObject::connect(ui->cbPortList,

                     SELECT<const QString&>::OVERLOAD_OF(&QComboBox::activated),

                     this, &PortControl::selectPort);

    QObject::connect(&tbPortList,

                     SELECT<const QString&>::OVERLOAD_OF(&QComboBox::activated),

                     this, &PortControl::selectPort);

    // setup buttons

    QObject::connect(ui->pbReloadPorts, &QPushButton::clicked,

                     this, &PortControl::loadPortList);

    ui->pbOpenPort->setDefaultAction(&openAction);

    // setup baud rate selection widget

    QObject::connect(ui->cbBaudRate,

                     SELECT<const QString&>::OVERLOAD_OF(&QComboBox::activated),

                     this, &PortControl::selectBaudRate);

    // setup parity selection buttons

    parityButtons.addButton(ui->rbNoParity, (int) QSerialPort::NoParity);

    parityButtons.addButton(ui->rbEvenParity, (int) QSerialPort::EvenParity);

    parityButtons.addButton(ui->rbOddParity, (int) QSerialPort::OddParity);

    QObject::connect(&parityButtons,

                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),

                     this, &PortControl::selectParity);

    // setup data bits selection buttons

    dataBitsButtons.addButton(ui->rb8Bits, (int) QSerialPort::Data8);

    dataBitsButtons.addButton(ui->rb7Bits, (int) QSerialPort::Data7);

    dataBitsButtons.addButton(ui->rb6Bits, (int) QSerialPort::Data6);

    dataBitsButtons.addButton(ui->rb5Bits, (int) QSerialPort::Data5);

    QObject::connect(&dataBitsButtons,

                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),

                     this, &PortControl::selectDataBits);

    // setup stop bits selection buttons

    stopBitsButtons.addButton(ui->rb1StopBit, (int) QSerialPort::OneStop);

    stopBitsButtons.addButton(ui->rb2StopBit, (int) QSerialPort::TwoStop);

    QObject::connect(&stopBitsButtons,

                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),

                     this, &PortControl::selectStopBits);

    // setup flow control selection buttons

    flowControlButtons.addButton(ui->rbNoFlowControl,

                                 (int) QSerialPort::NoFlowControl);

    flowControlButtons.addButton(ui->rbHardwareControl,

                                 (int) QSerialPort::HardwareControl);

    flowControlButtons.addButton(ui->rbSoftwareControl,

                                 (int) QSerialPort::SoftwareControl);

    QObject::connect(&flowControlButtons,

                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),

                     this, &PortControl::selectFlowControl);

    // init skip byte button

    QObject::connect(ui->pbSkipByte, &QPushButton::clicked,

                     [this](){emit skipByteRequested();});

    loadPortList();

    loadBaudRateList();

    ui->cbBaudRate->setCurrentIndex(ui->cbBaudRate->findText("9600"));

}

PortControl::~PortControl()

{

    delete ui;

}

void PortControl::loadPortList()

{

    QString currentSelection = ui->cbPortList->currentData(PortNameRole).toString();

    portList.loadPortList();

    int index = portList.indexOf(currentSelection);

    if (index >= 0)

    {

        ui->cbPortList->setCurrentIndex(index);

        tbPortList.setCurrentIndex(index);

    }

}

void PortControl::loadBaudRateList()

{

    ui->cbBaudRate->clear();

    for (auto baudRate : QSerialPortInfo::standardBaudRates())

    {

        ui->cbBaudRate->addItem(QString::number(baudRate));

    }

}

void PortControl::selectBaudRate(QString baudRate)

{

    if (serialPort->isOpen())

    {

        if (!serialPort->setBaudRate(baudRate.toInt()))

        {

            qCritical() << "Can't set baud rate!";

        }

        else

        {

            qDebug() << "Baud rate changed to" << serialPort->baudRate();

        }

    }

}

void PortControl::selectParity(int parity)

{

    if (serialPort->isOpen())

    {

        if(!serialPort->setParity((QSerialPort::Parity) parity))

        {

            qCritical() << "Can't set parity option!";

        }

    }

}

void PortControl::selectDataBits(int dataBits)

{

    if (serialPort->isOpen())

    {

        if(!serialPort->setDataBits((QSerialPort::DataBits) dataBits))

        {

            qCritical() << "Can't set numer of data bits!";

        }

    }

}

void PortControl::selectStopBits(int stopBits)

{

    if (serialPort->isOpen())

    {

        if(!serialPort->setStopBits((QSerialPort::StopBits) stopBits))

        {

            qCritical() << "Can't set number of stop bits!";

        }

    }

}

void PortControl::selectFlowControl(int flowControl)

{

    if (serialPort->isOpen())

    {

        if(!serialPort->setFlowControl((QSerialPort::FlowControl) flowControl))

        {

            qCritical() << "Can't set flow control option!";

        }

    }

}

void PortControl::togglePort()

{

    if (serialPort->isOpen())

    {

        serialPort->close();

        qDebug() << "Closed port:" << serialPort->portName();

        emit portToggled(false);

    }

    else

    {

        // we get the port name from the edit text, which may not be

        // in the portList if user hasn't pressed Enter

        // Also note that, portText may not be the `portName`

        QString portText = ui->cbPortList->currentText();

        QString portName;

        int portIndex = portList.indexOf(portText);

        if (portIndex < 0) // not in list, add to model and update the selections

        {

            portList.appendRow(new PortListItem(portText));

            ui->cbPortList->setCurrentIndex(portList.rowCount()-1);

            tbPortList.setCurrentIndex(portList.rowCount()-1);

            portName = portText;

        }

        else

        {

            // get the port name from the data field

            portName = static_cast<PortListItem*>(portList.item(portIndex))->portName();

        }