/****************************************************************************
**
** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com>
** Copyright (C) 2012 Laszlo Papp <lpapp@kde.org>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSerialPort module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
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**
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** modification, are permitted provided that the following conditions are
** met:
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**     notice, this list of conditions and the following disclaimer.
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****************************************************************************/

#include "settingsdialog.h"
#include "ui_settingsdialog.h"

#include <QtSerialPort/QSerialPortInfo>
#include <QIntValidator>
#include <QLineEdit>

QT_USE_NAMESPACE

static const char blankString[] = QT_TRANSLATE_NOOP("SettingsDialog", "N/A");

SettingsDialog::SettingsDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::SettingsDialog)
{
    ui->setupUi(this);

    intValidator = new QIntValidator(0, 4000000, this);

    ui->baudRateBox->setInsertPolicy(QComboBox::NoInsert);

    connect(ui->applyButton, &QPushButton::clicked,
            this, &SettingsDialog::apply);
    connect(ui->serialPortInfoListBox, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
            this, &SettingsDialog::showPortInfo);
    connect(ui->baudRateBox,  static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
            this, &SettingsDialog::checkCustomBaudRatePolicy);
    connect(ui->serialPortInfoListBox,  static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
            this, &SettingsDialog::checkCustomDevicePathPolicy);

    fillPortsParameters();
    fillPortsInfo();

    updateSettings();
}

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

SettingsDialog::Settings SettingsDialog::settings() const
{
    return currentSettings;
}

void SettingsDialog::showPortInfo(int idx)
{
    if (idx == -1)
        return;

    QStringList list = ui->serialPortInfoListBox->itemData(idx).toStringList();
    ui->descriptionLabel->setText(tr("Description: %1").arg(list.count() > 1 ? list.at(1) : tr(blankString)));
    ui->manufacturerLabel->setText(tr("Manufacturer: %1").arg(list.count() > 2 ? list.at(2) : tr(blankString)));
    ui->serialNumberLabel->setText(tr("Serial number: %1").arg(list.count() > 3 ? list.at(3) : tr(blankString)));
    ui->locationLabel->setText(tr("Location: %1").arg(list.count() > 4 ? list.at(4) : tr(blankString)));
    ui->vidLabel->setText(tr("Vendor Identifier: %1").arg(list.count() > 5 ? list.at(5) : tr(blankString)));
    ui->pidLabel->setText(tr("Product Identifier: %1").arg(list.count() > 6 ? list.at(6) : tr(blankString)));
}

void SettingsDialog::apply()
{
    updateSettings();
    hide();
}

void SettingsDialog::checkCustomBaudRatePolicy(int idx)
{
    bool isCustomBaudRate = !ui->baudRateBox->itemData(idx).isValid();
    ui->baudRateBox->setEditable(isCustomBaudRate);
    if (isCustomBaudRate) {
        ui->baudRateBox->clearEditText();
        QLineEdit *edit = ui->baudRateBox->lineEdit();
        edit->setValidator(intValidator);
    }
}

void SettingsDialog::checkCustomDevicePathPolicy(int idx)
{
    bool isCustomPath = !ui->serialPortInfoListBox->itemData(idx).isValid();
    ui->serialPortInfoListBox->setEditable(isCustomPath);
    if (isCustomPath)
        ui->serialPortInfoListBox->clearEditText();
}

void SettingsDialog::fillPortsParameters()
{
    ui->baudRateBox->addItem(QStringLiteral("9600"), QSerialPort::Baud9600);
    ui->baudRateBox->addItem(QStringLiteral("19200"), QSerialPort::Baud19200);
    ui->baudRateBox->addItem(QStringLiteral("38400"), QSerialPort::Baud38400);
    ui->baudRateBox->addItem(QStringLiteral("115200"), QSerialPort::Baud115200);
    ui->baudRateBox->addItem(tr("Custom"));

    ui->dataBitsBox->addItem(QStringLiteral("5"), QSerialPort::Data5);
    ui->dataBitsBox->addItem(QStringLiteral("6"), QSerialPort::Data6);
    ui->dataBitsBox->addItem(QStringLiteral("7"), QSerialPort::Data7);
    ui->dataBitsBox->addItem(QStringLiteral("8"), QSerialPort::Data8);
    ui->dataBitsBox->setCurrentIndex(3);

    ui->parityBox->addItem(tr("None"), QSerialPort::NoParity);
    ui->parityBox->addItem(tr("Even"), QSerialPort::EvenParity);
    ui->parityBox->addItem(tr("Odd"), QSerialPort::OddParity);
    ui->parityBox->addItem(tr("Mark"), QSerialPort::MarkParity);
    ui->parityBox->addItem(tr("Space"), QSerialPort::SpaceParity);

    ui->stopBitsBox->addItem(QStringLiteral("1"), QSerialPort::OneStop);
#ifdef Q_OS_WIN
    ui->stopBitsBox->addItem(tr("1.5"), QSerialPort::OneAndHalfStop);
#endif
    ui->stopBitsBox->addItem(QStringLiteral("2"), QSerialPort::TwoStop);

    ui->flowControlBox->addItem(tr("None"), QSerialPort::NoFlowControl);
    ui->flowControlBox->addItem(tr("RTS/CTS"), QSerialPort::HardwareControl);
    ui->flowControlBox->addItem(tr("XON/XOFF"), QSerialPort::SoftwareControl);
}

void SettingsDialog::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    QString description;
    QString manufacturer;
    QString serialNumber;
    const auto infos = QSerialPortInfo::availablePorts();
    for (const QSerialPortInfo &info : infos) {
        QStringList list;
        description = info.description();
        manufacturer = info.manufacturer();
        serialNumber = info.serialNumber();
        list << info.portName()
             << (!description.isEmpty() ? description : blankString)
             << (!manufacturer.isEmpty() ? manufacturer : blankString)
             << (!serialNumber.isEmpty() ? serialNumber : blankString)
             << info.systemLocation()
             << (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : blankString)
             << (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : blankString);

        ui->serialPortInfoListBox->addItem(list.first(), list);
    }

    ui->serialPortInfoListBox->addItem(tr("Custom"));
}

void SettingsDialog::updateSettings()
{
    currentSettings.name = ui->serialPortInfoListBox->currentText();

    if (ui->baudRateBox->currentIndex() == 4) {
        currentSettings.baudRate = ui->baudRateBox->currentText().toInt();
    } else {
        currentSettings.baudRate = static_cast<QSerialPort::BaudRate>(
                    ui->baudRateBox->itemData(ui->baudRateBox->currentIndex()).toInt());
    }
    currentSettings.stringBaudRate = QString::number(currentSettings.baudRate);

    currentSettings.dataBits = static_cast<QSerialPort::DataBits>(
                ui->dataBitsBox->itemData(ui->dataBitsBox->currentIndex()).toInt());
    currentSettings.stringDataBits = ui->dataBitsBox->currentText();

    currentSettings.parity = static_cast<QSerialPort::Parity>(
                ui->parityBox->itemData(ui->parityBox->currentIndex()).toInt());
    currentSettings.stringParity = ui->parityBox->currentText();

    currentSettings.stopBits = static_cast<QSerialPort::StopBits>(
                ui->stopBitsBox->itemData(ui->stopBitsBox->currentIndex()).toInt());
    currentSettings.stringStopBits = ui->stopBitsBox->currentText();

    currentSettings.flowControl = static_cast<QSerialPort::FlowControl>(
                ui->flowControlBox->itemData(ui->flowControlBox->currentIndex()).toInt());
    currentSettings.stringFlowControl = ui->flowControlBox->currentText();

    currentSettings.localEchoEnabled = ui->localEchoCheckBox->isChecked();
}