/* ****************************************************************************
 * Copyright 2019 Open Systems Development BV                                 *
 *                                                                            *
 * Permission is hereby granted, free of charge, to any person obtaining a    *
 * copy of this software and associated documentation files (the "Software"), *
 * to deal in the Software without restriction, including without limitation  *
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,   *
 * and/or sell copies of the Software, and to permit persons to whom the      *
 * Software is furnished to do so, subject to the following conditions:       *
 *                                                                            *
 * The above copyright notice and this permission notice shall be included in *
 * all copies or substantial portions of the Software.                        *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   *
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    *
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 * DEALINGS IN THE SOFTWARE.                                                  *
 * ***************************************************************************/
#pragma once

// std
#include <memory>
#include <string>

// mqtt-cpp
#include "mqttclient.h"
#include "compat-c++14.h"

class Subscriber
{
public:
    Subscriber(const std::string &client_id);

    virtual ~Subscriber() {}

    void    connect( const std::string &hostname, int portnumber = 1883, const std::string &username = std::string(), const std::string &password = std::string(),
                     const std::string &lwt_topic = std::string(), const std::string &lwt_message = std::string() );

    void    subscribe( const std::string &message_topic );

    void    unsubscribe( const std::string &message_topic );

protected:
    void    receive_data( const std::string &message_topic, const std::string &message_payload );

private:
    osdev::components::mqtt::MqttClient m_mqtt_client;

};