/*
 * Copyright (C) 2020 MERA
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <QtCore/QUrlQuery>
#include <QtGui/QGuiApplication>
#include <libhomescreen.hpp>
#include <qlibwindowmanager.h>
#include <QtCore/QCommandLineParser>
#include <QScopedPointer>

#include "mainwindow.h"
#include <QApplication>
#include <QDebug>

#include "cloudproxy-client/cloudproxyclient.h"


CloudProxyClient* g_cloudproxyclient{nullptr};


int main(int argc, char *argv[])
{
    QString graphic_role = QString("telemetrycloud");

    QApplication app(argc, argv);
    QScopedPointer<MainWindow> window;

    QCommandLineParser parser;
    parser.addPositionalArgument("port", app.translate("main", "port for binding"));
    parser.addPositionalArgument("secret", app.translate("main", "secret for binding"));
    parser.addHelpOption();
    parser.addVersionOption();
    parser.process(app);
    QStringList positionalArguments = parser.positionalArguments();

    if (positionalArguments.length() == 2)
    {
        int port = positionalArguments.takeFirst().toInt();
        QString secret = positionalArguments.takeFirst();
        QUrl bindingAddress;
        bindingAddress.setScheme(QStringLiteral("ws"));
        bindingAddress.setHost(QStringLiteral("localhost"));
        bindingAddress.setPort(port);
        bindingAddress.setPath(QStringLiteral("/api"));
        QUrlQuery query;
        query.addQueryItem(QStringLiteral("token"), secret);
        bindingAddress.setQuery(query);

        std::string token = secret.toStdString();
        LibHomeScreen* hs = new LibHomeScreen();
        QLibWindowmanager* qwm = new QLibWindowmanager();

        // WindowManager
        if(qwm->init(port,secret) != 0){
            exit(EXIT_FAILURE);
        }
        AGLScreenInfo screenInfo(qwm->get_scale_factor());
        window.reset(new MainWindow(screenInfo.scale_factor()));

        // Request a surface as described in layers.json windowmanager’s file
        if (qwm->requestSurface(graphic_role) != 0) {
            exit(EXIT_FAILURE);
        }
        // Create an event callback against an event type. Here a lambda is called when SyncDraw event occurs
        qwm->set_event_handler(QLibWindowmanager::Event_SyncDraw, [qwm, &graphic_role](json_object *object) {
                (void)object;
                qDebug() << "Surface got syncDraw!";
                qwm->endDraw(graphic_role);
            });

        // HomeScreen
        hs->init(port, token.c_str());
        // Set the event handler for Event_ShowWindow which will activate the surface for windowmanager
        hs->set_event_handler(LibHomeScreen::Event_ShowWindow, [qwm, &graphic_role](json_object *object){
                (void)object;
                qDebug("Surface %s got showWindow\n", graphic_role.toStdString().c_str());
                qwm->activateWindow(graphic_role);
            });

        g_cloudproxyclient = new CloudProxyClient();
        g_cloudproxyclient->init(port, token.c_str());

        g_cloudproxyclient->set_event_handler(CloudProxyClient::Event_ReceivedMessage, [&window](json_object* object){
                qDebug("CloudProxyClient::Event_ReceivedMessage: object ptr %p", object);

                const char* str = object ? json_object_to_json_string_ext(object, JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_PRETTY) : "<obj_null>";
                if (!str)
                    str = "<empty>";
                qDebug("Event_SendMessageConfirmation: %s", str);

                json_object *event_data;
                const char* data_str{nullptr};
                if(!json_object_object_get_ex(object, "data", &event_data) ||
                   (data_str = json_object_get_string(event_data)) == nullptr)
                {
                    qDebug("Can't read event data");
                    return;
                }

                window->updateState(QString(data_str));
                qDebug("Application received data: %s", data_str);
            });

        window->show();
        qwm->slotActivateWindow();
    }

    return app.exec();
}