#include "channelwidget.h"
#include <QDebug>
#include <QMessageBox>

ChannelWidget::ChannelWidget(uint16_t deviceSerial, uint16_t channelNumber, std::shared_ptr<struct eismultiplexer> multiplexer,
                             QWidget *parent)
    :
    QWidget(parent),
    deviceSerial(deviceSerial),
    channelNumber(channelNumber),
    multiplexer(multiplexer),
    checkbox("Enable"),
    devicelabel(QString::asprintf("Device %04u", deviceSerial)),
    channellabel(QString::asprintf("Channel %u", channelNumber)),
    ganglabel("Ganged:")
{
    hlayout.addLayout(&labellayout);
    vlayout.addLayout(&hlayout);

    labellayout.addWidget(&devicelabel);
    labellayout.addWidget(&channellabel);

    line.setGeometry(QRect(320, 150, 118, 3));
    line.setFrameShape(QFrame::HLine);
    line.setFrameShadow(QFrame::Sunken);
    vlayout.addWidget(&line);

    gangcombo.addItem("Unganged");

    hlayout.addStretch();
    hlayout.addWidget(&ganglabel);
    hlayout.addWidget(&gangcombo);
    hlayout.addWidget(&checkbox);
    connect(&checkbox, &QCheckBox::toggled, this, &ChannelWidget::onChannelToggled);

    setFixedHeight(96);
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);

    setLayout(&vlayout);
}

ChannelWidget::~ChannelWidget()
{
    // Nothing to clean up
}

uint16_t ChannelWidget::getDeviceSerial() const
{
    return deviceSerial;
}

uint16_t ChannelWidget::getChannelNumber() const
{
    return channelNumber;
}

bool ChannelWidget::isChecked() const
{
    return checkbox.isChecked();
}

void ChannelWidget::onChannelToggled(bool checked)
{
    if (checked) {
        // Emit signal before actually turning on the channel
        emit channelAboutToBeTurnedOn(deviceSerial, channelNumber);
    }

    channel_t channelFlag = static_cast<channel_t>(1 << channelNumber);
    if (checked) {
        if (eismultiplexer_connect_channel(multiplexer.get(), channelFlag) < 0) {
            QMessageBox::warning(this, tr("Connection Failed"),
                                 tr("Failed to connect channel %1 on device %2").arg(channelNumber).arg(deviceSerial));
            qWarning() << "Failed to connect channel" << channelNumber << "on device" << deviceSerial;
            checkbox.blockSignals(true);
            checkbox.setChecked(false);
            setEnabled(false); // Gray out the widget
        }
    } else {
        if (eismultiplexer_disconnect_channel(multiplexer.get(), channelFlag) < 0) {
            QMessageBox::warning(this, tr("Disconnection Failed"),
                                 tr("Failed to disconnect channel %1 on device %2").arg(channelNumber).arg(deviceSerial));
            qWarning() << "Failed to disconnect channel" << channelNumber << "on device" << deviceSerial;
            checkbox.blockSignals(true);
            checkbox.setChecked(true);
            setEnabled(false); // Gray out the widget
        }
    }
}