/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2018 Matthias P. Braendli
 *
 * 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.
 *
 * 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 THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "SoapyDummy.hpp"
#include <SoapySDR/Logger.hpp>
#include <SoapySDR/Formats.hpp>
#include <chrono>

std::vector<std::string> SoapyDummy::listTimeSources(void) const
{
    return {"internal"};
}

void SoapyDummy::setTimeSource(const std::string &source)
{
}

std::string SoapyDummy::getTimeSource(void) const
{
    return "internal";
}

bool SoapyDummy::hasHardwareTime(const std::string &what) const
{
    return true;
}

long long SoapyDummy::getHardwareTime(const std::string &what) const
{
    using namespace std::chrono;
    const auto now = steady_clock::now();
    return duration_cast<nanoseconds>(now.time_since_epoch()).count() - m_time_epoch;
}

void SoapyDummy::setHardwareTime(const long long timeNs, const std::string &what)
{
    // From getHardwareTime() we have:
    //   timeNs = now - epoch
    // we derive
    //   epoch = now - timeNs
    using namespace std::chrono;
    const auto now = steady_clock::now();
    m_time_epoch =
        duration_cast<nanoseconds>(now.time_since_epoch()).count() - timeNs;
}