/* Copyright (C) 2019
 *
 * This file is part of the osdev components suite
 *
 * 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, 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 */
#include "timemeasurement.h"

using namespace osdev::components::mqtt::measurement;

TimeMeasurement::TimeMeasurement(const std::string& id, const TimeMeasurementCallback& cb, bool measureOnDestruction)
    : m_id(id)
    , m_start(std::chrono::steady_clock::now())
    , m_last(m_start)
    , m_callback(cb)
    , m_measureOnDestruction(measureOnDestruction)
{
}

TimeMeasurement::~TimeMeasurement()
{
    if (m_measureOnDestruction) {
        this->measure();
    }
}

void TimeMeasurement::set()
{
    m_last = std::chrono::steady_clock::now();
}

void TimeMeasurement::measure()
{
    auto now = std::chrono::steady_clock::now();
    auto sinceLast = std::chrono::duration_cast<std::chrono::microseconds>(now - m_last);
    auto sinceStart = std::chrono::duration_cast<std::chrono::microseconds>(now - m_start);
    m_last = now;

    m_callback(m_id, m_start, sinceStart, sinceLast);
}