/*!
 * \file gen_signal_source.cc
 * \brief It wraps blocks that generates synthesized GNSS signal and filters
 *  it.
 * \author Marc Molina, 2013. marc.molina.pena@gmail.com
 *
 *
 * -----------------------------------------------------------------------------
 *
 * GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
 * This file is part of GNSS-SDR.
 *
 * Copyright (C) 2010-2020  (see AUTHORS file for a list of contributors)
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * -----------------------------------------------------------------------------
 */

#include "gen_signal_source.h"
#include <boost/lexical_cast.hpp>
#include <gnuradio/io_signature.h>
#include <gnuradio/message.h>
#include <sstream>
#include <utility>

#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#endif

// Constructor
GenSignalSource::GenSignalSource(std::shared_ptr<GNSSBlockInterface> signal_generator,
    std::shared_ptr<GNSSBlockInterface> filter,
    std::string role,
    Concurrent_Queue<pmt::pmt_t> *queue __attribute__((unused)))
    : signal_generator_(std::move(signal_generator)),
      filter_(std::move(filter)),
      role_(std::move(role)),
      connected_(false)
{
}


void GenSignalSource::connect(gr::top_block_sptr top_block)
{
    if (connected_)
        {
            LOG(WARNING) << "Signal conditioner already connected internally";
            return;
        }

    signal_generator_->connect(top_block);
    filter_->connect(top_block);

    top_block->connect(signal_generator_->get_right_block(), 0,
        filter_->get_left_block(), 0);

    DLOG(INFO) << "signal_generator -> filter";

    connected_ = true;
}


void GenSignalSource::disconnect(gr::top_block_sptr top_block)
{
    if (!connected_)
        {
            LOG(WARNING) << "Signal conditioner already disconnected internally";
            return;
        }

    top_block->disconnect(signal_generator_->get_right_block(), 0,
        filter_->get_left_block(), 0);

    signal_generator_->disconnect(top_block);
    filter_->disconnect(std::move(top_block));

    connected_ = false;
}


gr::basic_block_sptr GenSignalSource::get_left_block()
{
    return signal_generator_->get_left_block();
}


gr::basic_block_sptr GenSignalSource::get_right_block()
{
    return filter_->get_right_block();
}
