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path: root/src/main_qmladaptor.cpp
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/*
 * This file is part of Remote Support Desktop
 * https://gitlab.das-netzwerkteam.de/RemoteWebApp/rwa.support.desktopapp
 * Copyright 2020, 2021 Daniel Teichmann <daniel.teichmann@das-netzwerkteam.de>
 * Copyright 2020, 2021 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the
 * Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include "main_qmladaptor.h"

MainQMLAdaptor::MainQMLAdaptor(QObject *parent, QQmlApplicationEngine* engine,
                               DBusAPI *dbus_api) : QObject(parent) {
    Q_ASSERT(engine != nullptr);
    Q_ASSERT(dbus_api != nullptr);

    _engine = engine;
    _dbus_api = dbus_api;
    _rwaHostModel = new QList<QObject*>;

    QTimer *timer = new QTimer(this);
    connect(timer, &QTimer::timeout, _dbus_api, QOverload<>::of(&DBusAPI::get_web_app_hosts_request));
    timer->start(10000);
}

void MainQMLAdaptor::onRwaHostSelected(QString host_uuid) {
    Q_ASSERT(host_uuid != "");

    RWAHost *_host = nullptr;
    for (int i = 0; i < getRWAHostModel().size(); i++) {
        QObject *obj = getRWAHostModel().value(i);
        RWAHost *host = qobject_cast<RWAHost *>(obj);
        Q_ASSERT(host != nullptr);

        if (host->uuid() == host_uuid) {
            _host = host;
        }
    }
    Q_ASSERT(_host != nullptr);

    qDebug() << "RWAHost was selected!" << _host->uuid() << "aka" << _host->alias();

    // Find item via 'objectName'
    QObject *sidebar_drawer = _engine->rootObjects().takeFirst()->findChild<QObject*>("sidebar_drawer");
    if (sidebar_drawer) {
        sidebar_drawer->setProperty("rwaHostIsSelected", true);
    } else {
        qWarning() << "Unable to find 'sidebar_drawer' Item!";
    }
}

void MainQMLAdaptor::setRWAHostModel(QList<QObject*> *rwa_hosts) {
    _rwaHostModel = rwa_hosts;
    emit rwaHostModelChanged(*rwa_hosts);
}

void MainQMLAdaptor::addRWAHost(RWAHost *rwa_host) {
    _rwaHostModel->append(rwa_host);
    emit rwaHostModelChanged(*_rwaHostModel);
}

QList<QObject*> MainQMLAdaptor::getRWAHostModel() {
    return *_rwaHostModel;
}

void MainQMLAdaptor::get_web_app_hosts_response(QJsonDocument *doc) {
    // Don't use Q_ASSERT(doc != nullptr); instead use:
    if (doc == nullptr) {
        showToast(tr("Can't connect to underlying session service!"), 10000);
        return;
    }
    // Q_ASSERT lets the program crash immediatly at startup,
    // when the session service is not started.

    delete _rwaHostModel;
    setRWAHostModel(new QList<QObject*>);
    bool atLeastOneHostAvailable = false;

    // Get the QJsonObject
    QJsonObject jObject = doc->object();
    QVariantMap mainMap = jObject.toVariantMap();

    // Status of request
    QString request_status = mainMap["status"].toString();
    if (request_status == "success") {
        // Building host_objects
        QJsonArray host_objects = jObject.value("hosts").toArray();

        foreach (const QJsonValue &host_object, host_objects) {
            QString host_uuid  = host_object["uuid"].toString();
            QString host_alias = host_object["alias"].toString();
            QString host_url   = host_object["url"].toString();

            if (host_url == "" || host_uuid == "") {
                // This two values are required and can't be omitted.
                QString reason = tr("A host object in the response of D-Bus "
                                    "service lacks a necessary value. (host_url or host_uuid)");
                qCritical().noquote() << tr("An error occured while adding a new host:")
                                      << reason;

                return;
            }

            if (host_alias == "") {
                qDebug().noquote() << QString("An alias for the host wasn't delivered "
                                              "so just use '%0' as alias.").arg(host_url);
                host_alias = host_url;
            }

            // Now built RWAHost object.
            RWAHost *rwa_host = new RWAHost(host_uuid, host_alias, host_url);
            addRWAHost(rwa_host);
            atLeastOneHostAvailable = true;

            qInfo().noquote() << QString(tr("Successfully added new RWAHost '%0'")).arg(rwa_host->alias());
        }
    } else {
        QString reason = tr("An error occured while adding a new host:");
        qCritical().noquote() << reason;

        QString type = mainMap["type"].toString();
        if (type != "") {
            reason = QString(tr("The error is not clear. The session service "
                                "responded with status type '%0'")).arg(type);
            qCritical().noquote() << reason;
        } else {
            reason = QString(tr("The error is not clear. The session service "
                                "responded with no status type!"));
            qCritical().noquote() << reason;
        }

        return;
    }

    if (!atLeastOneHostAvailable) {
        main_content_replace("scenes/Scene_no_server_available.qml");
        // Find item via 'objectName'
        QObject *sidebar_drawer = _engine->rootObjects().takeFirst()->findChild<QObject*>("sidebar_drawer");
        if (sidebar_drawer) {
            sidebar_drawer->setProperty("rwaHostIsSelected", false);
        } else {
            qWarning() << "Unable to find 'sidebar_drawer' Item!";
        }
    }
    QObject *server_chooser = _engine->rootObjects().takeFirst()->findChild<QObject*>("server_chooser");
    if (server_chooser) {
        server_chooser->setProperty("displayText", atLeastOneHostAvailable ? server_chooser->property("currentText") : tr("No RWA host available!"));
        server_chooser->setProperty("enabled", atLeastOneHostAvailable);
    } else {
        qWarning() << "Unable to find 'server_chooser' Item!";
    }
}

void MainQMLAdaptor::main_content_push(QString scene) {
    // Find item via 'objectName'
    QObject *main_content = _engine->rootObjects().takeFirst()->findChild<QObject*>("main_content");
    Q_ASSERT(main_content != nullptr);
    QMetaObject::invokeMethod(main_content, "push", Q_ARG(QString, scene));
}

void MainQMLAdaptor::main_content_pop(QString scene) {
    // Find item via 'objectName'
    QObject *main_content = _engine->rootObjects().takeFirst()->findChild<QObject*>("main_content");
    Q_ASSERT(main_content != nullptr);
    QMetaObject::invokeMethod(main_content, "pop", Q_ARG(QString, scene));
}

void MainQMLAdaptor::main_content_replace(QString scene) {
    // Find item via 'objectName'
    QObject *window = _engine->rootObjects().takeFirst();
    Q_ASSERT(window != nullptr);

    QVariant arg = QVariant::fromValue(scene);
    if(!QMetaObject::invokeMethod(window, "main_content_replace", Q_ARG(QVariant, arg)))
        qDebug() << "Failed to invoke push";
}

bool MainQMLAdaptor::setConnectButtonEnabled(bool enabled) {
    // Find item via 'objectName'
    QQuickItem *scene_remote_control = _engine->rootObjects().takeFirst()->findChild<QQuickItem*>("Scene_remote_control");
    QQuickItem *item = scene_remote_control->findChild<QQuickItem*>("start_support_button");
    if (item) {
        item->setProperty("enabled", enabled);
        if (item->property("checked").toBool()) {
            item->setProperty("text", tr("Stop remote support session"));
        } else {
            item->setProperty("text", tr("Start remote support session"));
        }
    } else {
        qWarning() << "Unable to find 'start_support_button' Item!";
        return false;
    }

    return true;
}

bool MainQMLAdaptor::setConnectButtonChecked(bool checked) {
    // Find item via 'objectName'
    QQuickItem *scene_remote_control = _engine->rootObjects().at(0)->findChild<QQuickItem*>("Scene_remote_control");
    QQuickItem *item = scene_remote_control->findChild<QQuickItem*>("start_support_button");
    if (item) {
        item->setProperty("checked", checked);
    } else {
        qWarning() << "Unable to find 'start_support_button' Item!";
        return false;
    }

    return true;
}

bool MainQMLAdaptor::setStatus(QString status) {
    // Find item via 'objectName'
    QQuickItem *scene_remote_control = _engine->rootObjects().at(0)->findChild<QQuickItem*>("Scene_remote_control");
    QQuickItem *item = scene_remote_control->findChild<QQuickItem*>("dbus_api_status_text");
    if (item) {
        item->setProperty("text", status);
    } else {
        qWarning() << "Unable to find 'dbus_api_status_text' Item!";
        return false;
    }

    return true;
}

bool MainQMLAdaptor::openMessageDialog(QString title, QString text, QMessageBox::Icon icon) {
    _messageDialogText  = text;
    _messageDialogTitle = title;
    _messageDialogIcon  = icon;
    _showMessageDialog = true;
    emit messageDialogIconChanged(_messageDialogIcon);
    emit messageDialogTitleChanged(_messageDialogTitle);
    emit messageDialogTextChanged(_messageDialogText);

    emit showMessageDialogChanged(_showMessageDialog);

    qDebug() << "Opening MessageDialog!";
    return true;
}

QString MainQMLAdaptor::getMessageDialogTitle() {
    return _messageDialogTitle;
}

QString MainQMLAdaptor::getMessageDialogText() {
    return _messageDialogText;
}

QMessageBox::Icon MainQMLAdaptor::getMessageDialogIcon() {
    return _messageDialogIcon;
}

bool MainQMLAdaptor::getShowMessageDialog() {
    return _showMessageDialog;
}

bool MainQMLAdaptor::setStatusIndicator(bool active, QColor color) {
    // Find item via 'objectName'
    QQuickItem *scene_remote_control = _engine->rootObjects().at(0)->findChild<QQuickItem*>("Scene_remote_control");
    QQuickItem *item = scene_remote_control->findChild<QQuickItem*>("dbus_api_status_indicator");
    if (item) {
        item->setProperty("active", active);
        item->setProperty("color", color);
    } else {
        qWarning() << "Unable to find 'dbus_api_status_indicator' Item!";
        return false;
    }

    return true;
}

void MainQMLAdaptor::handleCopyToClipboardButtonClick(QString copy_data) {
    QClipboard *clipboard = QApplication::clipboard();
    QString originalText = clipboard->text();
    clipboard->setText(copy_data);
    qDebug() << "Copied into clipboard:" << copy_data;
}

void MainQMLAdaptor::handleConnectButtonClick(bool checked) {
    emit onConnectButtonClick(checked);
}

void MainQMLAdaptor::setPin(QString pin) {
    _pin = pin;
    emit pinChanged(pin);
}
void MainQMLAdaptor::setURL(QString URL) {
    _url = URL;
    emit urlChanged(URL);
}
void MainQMLAdaptor::setSessionID(QString session_id) {
    _session_id = session_id;
    emit sessionIDChanged(session_id);
}
QString MainQMLAdaptor::getURL() {
    return _url;
}
QString MainQMLAdaptor::getPin() {
    return _pin;
}
QString MainQMLAdaptor::getSessionID() {
    return _session_id;
}

void MainQMLAdaptor::onCloseHandler() {
    // Do cleanup things here...
    emit onCloseSignal();
}

void MainQMLAdaptor::showToast(QString text, uint durationMs) {
    emit showToastSignal(text, QString::number(durationMs));
}