/****************************************************************************
**
** Copyright (C) 2019 Luxoft Sweden AB
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QML Live tool.
**
** $QT_BEGIN_LICENSE:GPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite licenses may use
** this file in accordance with the commercial license agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and The Qt Company.  For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
** SPDX-License-Identifier: GPL-3.0
**
****************************************************************************/

#include <QtGui>
#include <QtQuick>

// Use QML Live headers
#include "livenodeengine.h"
#include "remotereceiver.h"
#include "constants.h"

class MyQmlApplicationEngine : public QQmlApplicationEngine
{
    Q_OBJECT

public:
    MyQmlApplicationEngine(const QString &mainQml); // Perform some setup here

    QString mainQml() const;
    QQuickWindow *mainWindow();
    QList<QQmlError> warnings() const;

    // ...
};

int main(int argc, char **argv)
{
    QGuiApplication app(argc, argv);
    MyQmlApplicationEngine engine(QStringLiteral("qml/customruntime-window.qml"));

    if (!qEnvironmentVariableIsSet("MY_APP_ENABLE_QMLLIVE"))
        return app.exec();

#if defined(QT_NO_DEBUG)
    qWarning() << "QML Live support was disabled at compile time";
#else
    LiveNodeEngine node;

    // Let QML Live know your runtime
    node.setQmlEngine(&engine);

    // Allow it to display QML components with non-QQuickWindow root object
    QQuickView fallbackView(&engine, 0);
    node.setFallbackView(&fallbackView);

    // Tell it where file updates should be stored relative to
    node.setWorkspace(app.applicationDirPath(),
                      LiveNodeEngine::AllowUpdates | LiveNodeEngine::UpdatesAsOverlay);

    // Listen to IPC call from remote QML Live Bench
    RemoteReceiver receiver;
    receiver.registerNode(&node);
    receiver.listen(Constants::DEFAULT_PORT());

    // Advanced use: let it know the initially loaded QML component (do this
    // only after registering to receiver!)
    node.usePreloadedDocument(engine.mainQml(), engine.mainWindow(), engine.warnings());
#endif

    return app.exec();
}

// Keep the snippet simple!
static QString MyQmlApplicationEngine_mainQml;
static QList<QQmlError> MyQmlApplicationEngine_warnings;

MyQmlApplicationEngine::MyQmlApplicationEngine(const QString &mainQml)
{
    // Would be nice to have this in QQmlApplicationEngine
    MyQmlApplicationEngine_mainQml = mainQml;
    connect(this, &QQmlEngine::warnings, [](const QList<QQmlError> &warnings) {
        MyQmlApplicationEngine_warnings.append(warnings);
    });

    QStringList colors;
    colors.append(QStringLiteral("red"));
    colors.append(QStringLiteral("green"));
    colors.append(QStringLiteral("blue"));
    colors.append(QStringLiteral("black"));
    rootContext()->setContextProperty("myColors", colors);

    load(QDir(qApp->applicationDirPath()).absoluteFilePath(mainQml));
};

QString MyQmlApplicationEngine::mainQml() const
{
    return MyQmlApplicationEngine_mainQml;
}

QQuickWindow *MyQmlApplicationEngine::mainWindow()
{
    if (rootObjects().isEmpty())
        return nullptr;

    return qobject_cast<QQuickWindow *>(rootObjects().first());
}

QList<QQmlError> MyQmlApplicationEngine::warnings() const
{
    return MyQmlApplicationEngine_warnings;
}

#include "main.moc"