/*
 * Copyright (c) 2019 TOYOTA MOTOR CORPORATION
 *
 * 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 <QGuiApplication>
#include <QCommandLineParser>
#include <QtGui/QGuiApplication>
#include <QtQml/QQmlApplicationEngine>
#include <QtQml/QQmlContext>
#include <QtQml/qqml.h>
#include <QQuickWindow>
#include <QtQuickControls2/QQuickStyle>
#include <QVariant>
#include <QTimer>

#include <json-c/json.h>

#include "eventhandler.h"
#include "onscreenmodel.h"

/*
{
   "application_id": "onscreenapp",
   "title": "onscreen title",
   "type": "information",
   "contents": "message contents",
   "buttons": ["button_name1"],
   "replyto":"onstestapp"
}
*/
static struct json_object *
build_fake_json(void)
{
	struct json_object *tmp;
	struct json_object *obj = json_object_new_object();
	struct json_object *array = json_object_new_array();

	tmp = json_object_new_string("Big Title");
	json_object_object_add(obj, "title", tmp);

	tmp = json_object_new_string("Informatin");
	json_object_object_add(obj, "type", tmp);

	tmp = json_object_new_string("Our message contents");
	json_object_object_add(obj, "contents", tmp);

	tmp = json_object_new_string("onstestapp");
	json_object_object_add(obj, "replyto", tmp);

	/* array */
	tmp = json_object_new_string("Button");
	json_object_array_add(array, tmp);
	json_object_object_add(obj, "buttons", array);

	tmp = json_object_new_string(APP_ID);
	json_object_object_add(obj, "application_id", tmp);

	/* adds the entire object */
	return obj;
}

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

#if 0
    QCoreApplication::setOrganizationDomain("LinuxFoundation");
    QCoreApplication::setOrganizationName("AutomotiveGradeLinux");
    QCoreApplication::setApplicationName("Onscreenapp");
    QCoreApplication::setApplicationVersion("0.1.0");
#endif

    // this is necessary to identify app, setApplicationName is only for the
    // title
    app.setDesktopFileName(APP_ID);

    //QQuickStyle::setStyle("AGL");

    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();

    int port = 1700;
    QString token = "wm";

    if (positionalArguments.length() == 2) {
        port = positionalArguments.takeFirst().toInt();
        token = positionalArguments.takeFirst();
    }

    HMI_DEBUG(APP_ID, "port = %d, token = %s", port, token.toStdString().c_str());

    QQmlApplicationEngine engine;
    EventHandler *eventHandler = new EventHandler();
    eventHandler->init(port, token.toStdString().c_str());
    engine.rootContext()->setContextProperty("eventHandler", eventHandler);
    qmlRegisterType<OnScreenModel>("OnScreenModel", 1, 0, "OnScreenModel");
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    if (engine.rootObjects().isEmpty()) {
        HMI_DEBUG(APP_ID, "Fatal Error, rootObject is empty!");
        return -1;
    }

    QObject *root = engine.rootObjects().first();
    QQuickWindow *window = qobject_cast<QQuickWindow *>(root);

    QObject::connect(eventHandler, SIGNAL(updateModel(QVariant)), window, SLOT(setOnScreenModel(QVariant)));
    QObject::connect(eventHandler, SIGNAL(showOnScreen()), window, SLOT(showOnScreen()));
    QObject::connect(eventHandler, SIGNAL(hideOnScreen()), window, SLOT(hideOnScreen()));


    HMI_DEBUG(APP_ID, "onscreenapp started!");

#if 0
    /* fake(s) an event */

    /* this was used before to fake an event before onscreenapp was hooked-up */
    QTimer::singleShot(1000, [eventHandler](){
		struct json_object *json = build_fake_json();
		const char *json_str = json_object_to_json_string_ext(json,
					JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_PRETTY);
		emit eventHandler->updateModel(QVariant(json_str));
		emit eventHandler->showOnScreen();
    });
#endif

    return app.exec();
}