/*!
 * \file channel_msg_receiver_cc.cc
 * \brief GNU Radio block that receives asynchronous channel messages from
 * acquisition and tracking blocks
 * \author Javier Arribas, 2016. jarribas(at)cttc.es
 *
 * -----------------------------------------------------------------------------
 *
 * 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 "channel_msg_receiver_cc.h"
#include <gnuradio/gr_complex.h>
#include <gnuradio/io_signature.h>
#include <cstdint>
#include <utility>

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

#if PMT_USES_BOOST_ANY
#include <boost/any.hpp>
namespace wht = boost;
#else
#include <any>
namespace wht = std;
#endif

#if HAS_GENERIC_LAMBDA
#else
#include <boost/bind/bind.hpp>
#endif

channel_msg_receiver_cc_sptr channel_msg_receiver_make_cc(std::shared_ptr<ChannelFsm> channel_fsm, bool repeat)
{
    return channel_msg_receiver_cc_sptr(new channel_msg_receiver_cc(std::move(channel_fsm), repeat));
}


channel_msg_receiver_cc::channel_msg_receiver_cc(std::shared_ptr<ChannelFsm> channel_fsm,
    bool repeat) : gr::block("channel_msg_receiver_cc", gr::io_signature::make(0, 0, 0), gr::io_signature::make(0, 0, 0)),
                   d_channel_fsm(std::move(channel_fsm)),
                   d_repeat(repeat)
{
    this->message_port_register_in(pmt::mp("events"));
    this->set_msg_handler(pmt::mp("events"),
#if HAS_GENERIC_LAMBDA
        [this](auto&& PH1) { msg_handler_channel_events(std::forward<decltype(PH1)>(PH1)); });
#else
#if USE_BOOST_BIND_PLACEHOLDERS
        boost::bind(&channel_msg_receiver_cc::msg_handler_channel_events, this, boost::placeholders::_1));
#else
        boost::bind(&channel_msg_receiver_cc::msg_handler_channel_events, this, _1));
#endif
#endif
}


void channel_msg_receiver_cc::msg_handler_channel_events(const pmt::pmt_t& msg)
{
    bool result = false;
    try
        {
            const int64_t message = pmt::to_long(msg);
            switch (message)
                {
                case 1:  // positive acquisition
                         // Now the acquisition block can optionally trigger the event valid acquisition internally,
                         // in order to reduce acquisition to tracking delay.
                    result = d_channel_fsm->Event_valid_acquisition();
                    break;
                case 2:  // negative acquisition
                    if (d_repeat == true)
                        {
                            result = d_channel_fsm->Event_failed_acquisition_repeat();
                        }
                    else
                        {
                            result = d_channel_fsm->Event_failed_acquisition_no_repeat();
                        }
                    break;
                case 3:  // tracking loss of lock event
                    result = d_channel_fsm->Event_failed_tracking_standby();
                    break;
                default:
                    LOG(WARNING) << "Default case, invalid message.";
                    break;
                }
        }
    catch (const wht::bad_any_cast& e)
        {
            LOG(WARNING) << "msg_handler_channel_events Bad any cast: " << e.what();
        }
    if (!result)
        {
            LOG(WARNING) << "msg_handler_channel_events invalid event";
        }
}
