/*!
 *
 * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
 * copyright

 *          THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM,

 *          IN PART OR IN WHOLE,

 *          WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.

 *
 * file    messagehandler.h
 * date    10/26/2019
 * author  Behrouz NematiPour
 *
 */
#pragma once

// Qt
#include <QObject>
#include <QCanBus>
#include <QHash>

// Project
#include "main.h"
#include "guiactions.h"
#include "messagebuilder.h"

// Define
#define _MessageHandler MessageHandler::I()

// forward declarations
class unittests;

// namespace
using namespace Gui;
namespace Can {

#define CAN_FRAME_LENGTH            8
#define MAX_PAYLOAD_IN_HEADER_FRAME 3

class MessageHandler : public QObject
{
    Q_OBJECT

    // friends
    friend class ::unittests;

    MessageBuilder _builder;

    // Singleton
    SINGLETON_DECL(MessageHandler)
public:
        void init();

private:
    void initConnections();
    void checked_in();

    void transmitFrame(Can_Id vCan_Id, GuiActionType vAction, const QByteArray &vData = 0);

    bool ignoreChannel(const QCanBusFrame &vFrame);


    // interpret the data into GUI understandable Actions/Data
    bool          interpretData(const Message &vMessage, GuiActionType &vActionId, GuiActionData &vData);

private slots: // Should be private for thread safety and is connected internally.
    void  onActionTransmit(GuiActionType vAction, const QByteArray &vData); // UI => HD/DG
    void  onFrameReceive  (const QCanBusFrame &vFrame                    ); // UI <= HD/DG

    void onMainTimerTimeout();

signals:
    void didActionReceive (GuiActionType vAction, GuiActionData vData); // UI <= HD/DG
    void didFrameTransmit (const QCanBusFrame &vFrame                ); // UI => HD/DG
};
}