/*

  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 <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.addAction(&openAction);

    // setup buttons

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

                     this, &PortControl::loadPortList);

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

    // TODO: port name coming from combobox is dirty, create a separate layer of signals

    //       that will sanitize this information

    QObject::connect(ui->cbPortList,

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

                     this, &PortControl::selectPort);

    QObject::connect(ui->cbPortList,

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

                     this, &PortControl::onPortNameChanged);

    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()

{

}

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!";

        }

    }

}

    // portName may be coming from combobox

    portName = portName.split(" ")[0];

    // has selection actually changed

    if (portName != serialPort->portName())

    {

        // if another port is already open, close it by toggling

        if (serialPort->isOpen())

        {

            togglePort();

            // open new selection by toggling

            togglePort();

        }

    }

}

void PortControl::enableSkipByte(bool enabled)

{

    ui->pbSkipByte->setDisabled(enabled);

}

void PortControl::keepPortName(QString portName)

{

    if(!discoveredPorts.contains(portName) &&

       !userEnteredPorts.contains(portName))

    {

        userEnteredPorts << portName;

    }

    if(ui->cbPortList->findText(portName) < 0)

    {

        ui->cbPortList->addItem(portName);

    }

}

void PortControl::onPortNameChanged(QString portName)

{

    keepPortName(portName);

}

QToolBar* PortControl::toolBar()

{

    return &portToolBar;

}

void PortControl::openActionTriggered(bool checked)

{

    togglePort();

}

  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/>.

*/

#ifndef PORTCONTROL_H

#define PORTCONTROL_H

#include <QWidget>

#include <QButtonGroup>

#include <QSerialPort>

#include <QStringList>

#include <QToolBar>

#include <QAction>

#include <QComboBox>

#include "portlist.h"

namespace Ui {

class PortControl;

}

class PortControl : public QWidget

{

    Q_OBJECT

public:

    explicit PortControl(QSerialPort* port, QWidget* parent = 0);

    ~PortControl();

    QSerialPort* serialPort;

    QToolBar* toolBar();

private:

    Ui::PortControl *ui;

    QButtonGroup parityButtons;

    QButtonGroup dataBitsButtons;

    QButtonGroup stopBitsButtons;

    QButtonGroup flowControlButtons;

    QToolBar portToolBar;

    QAction openAction;

    PortList portList;

    QStringList discoveredPorts; // list of port names returned by availablePorts

    QStringList userEnteredPorts; // list of port names entered by user

    void keepPortName(QString portName); // if it's not already in userEn. or discv. list

public slots:

    void loadPortList();

    void loadBaudRateList();

    void togglePort();

    void selectPort(QString portName);

    void enableSkipByte(bool enabled = true);

    void selectBaudRate(QString baudRate);

    void selectParity(int parity); // parity must be one of QSerialPort::Parity

    void selectDataBits(int dataBits); // bits must be one of QSerialPort::DataBits

    void selectStopBits(int stopBits); // stopBits must be one of QSerialPort::StopBits

    void selectFlowControl(int flowControl); // flowControl must be one of QSerialPort::FlowControl

private slots:

    void onPortNameChanged(QString portName);

    void openActionTriggered(bool checked);

signals:

    void skipByteRequested();

    void portToggled(bool open);

};

#endif // PORTCONTROL_H