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** Copyright (C) 2016 The Qt Company Ltd.
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**
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
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#include "remotelinuxenvironmentaspectwidget.h"

#include "linuxdevice.h"
#include "remotelinuxrunconfiguration.h"
#include "remotelinuxenvironmentreader.h"

#include <coreplugin/icore.h>
#include <projectexplorer/environmentwidget.h>
#include <projectexplorer/kitinformation.h>
#include <projectexplorer/target.h>
#include <utils/qtcassert.h>

#include <QCoreApplication>
#include <QMessageBox>
#include <QPushButton>

using namespace ProjectExplorer;
using namespace RemoteLinux::Internal;

namespace {
const QString FetchEnvButtonText
    = QCoreApplication::translate("RemoteLinux::RemoteLinuxEnvironmentAspectWidget",
                                  "Fetch Device Environment");
} // anonymous namespace

namespace RemoteLinux {

RemoteLinuxEnvironmentAspectWidget::RemoteLinuxEnvironmentAspectWidget
        (RemoteLinuxEnvironmentAspect *aspect, Target *target) :
    EnvironmentAspectWidget(aspect, new QPushButton)
{
    IDevice::ConstPtr device = DeviceKitAspect::device(target->kit());

    deviceEnvReader = new RemoteLinuxEnvironmentReader(device, this);
    connect(target, &ProjectExplorer::Target::kitChanged,
            deviceEnvReader, &RemoteLinuxEnvironmentReader::handleCurrentDeviceConfigChanged);

    QPushButton *button = fetchButton();
    button->setText(FetchEnvButtonText);
    connect(button, &QPushButton::clicked, this, &RemoteLinuxEnvironmentAspectWidget::fetchEnvironment);
    connect(deviceEnvReader, &RemoteLinuxEnvironmentReader::finished,
            this, &RemoteLinuxEnvironmentAspectWidget::fetchEnvironmentFinished);
    connect(deviceEnvReader, &RemoteLinuxEnvironmentReader::error,
            this, &RemoteLinuxEnvironmentAspectWidget::fetchEnvironmentError);

    const EnvironmentWidget::OpenTerminalFunc openTerminalFunc
            = [target](const Utils::Environment &env) {
        IDevice::ConstPtr device = DeviceKitAspect::device(target->kit());
        if (!device) {
            QMessageBox::critical(Core::ICore::dialogParent(),
                                  tr("Cannot Open Terminal"),
                                  tr("Cannot open remote terminal: Current kit has no device."));
            return;
        }
        const auto linuxDevice = device.dynamicCast<const LinuxDevice>();
        QTC_ASSERT(linuxDevice, return);
        linuxDevice->openTerminal(env, QString());
    };
    envWidget()->setOpenTerminalFunc(openTerminalFunc);
}

RemoteLinuxEnvironmentAspect *RemoteLinuxEnvironmentAspectWidget::aspect() const
{
    return dynamic_cast<RemoteLinuxEnvironmentAspect *>(EnvironmentAspectWidget::aspect());
}

QPushButton *RemoteLinuxEnvironmentAspectWidget::fetchButton() const
{
    return qobject_cast<QPushButton *>(additionalWidget());
}

void RemoteLinuxEnvironmentAspectWidget::fetchEnvironment()
{
    QPushButton *button = fetchButton();
    disconnect(button, &QPushButton::clicked,
               this, &RemoteLinuxEnvironmentAspectWidget::fetchEnvironment);
    connect(button, &QPushButton::clicked,
            this, &RemoteLinuxEnvironmentAspectWidget::stopFetchEnvironment);
    button->setText(tr("Cancel Fetch Operation"));
    deviceEnvReader->start();
}

void RemoteLinuxEnvironmentAspectWidget::fetchEnvironmentFinished()
{
    QPushButton *button = fetchButton();
    disconnect(button, &QPushButton::clicked,
               this, &RemoteLinuxEnvironmentAspectWidget::stopFetchEnvironment);
    connect(button, &QPushButton::clicked,
            this, &RemoteLinuxEnvironmentAspectWidget::fetchEnvironment);
    button->setText(FetchEnvButtonText);
    aspect()->setRemoteEnvironment(deviceEnvReader->remoteEnvironment());
}

void RemoteLinuxEnvironmentAspectWidget::fetchEnvironmentError(const QString &error)
{
    QMessageBox::warning(this, tr("Device Error"),
        tr("Fetching environment failed: %1").arg(error));
}

void RemoteLinuxEnvironmentAspectWidget::stopFetchEnvironment()
{
    deviceEnvReader->stop();
    fetchEnvironmentFinished();
}

// --------------------------------------------------------------------
// RemoteLinuxEnvironmentAspectWidget:
// --------------------------------------------------------------------

} // namespace RemoteLinux