//
// Copyright 2013-2014 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//

#include <uhdlib/transport/nirio/niriok_proxy.h>
#include <uhdlib/transport/nirio/niriok_proxy_impl_v1.h>
#include <uhdlib/transport/nirio/niriok_proxy_impl_v2.h>
#include <cstring>

// "push" and "pop" introduced in GCC 4.6; works with all clang
#if defined(__clang__) || defined(__GNUC__) && (__GNUC__ > 3) && (__GNUC_MINOR__ > 5)
#    pragma GCC diagnostic push
#endif
#if defined(__clang__) || defined(__GNUC__)
#    pragma GCC diagnostic ignored "-Wmissing-field-initializers"
#endif

namespace uhd { namespace niusrprio {
// initialization of static members
boost::shared_mutex niriok_proxy::_synchronization;

//-------------------------------------------------------
// niriok_proxy
//-------------------------------------------------------
niriok_proxy::niriok_proxy() : _device_handle(nirio_driver_iface::INVALID_RIO_HANDLE) {}

niriok_proxy::~niriok_proxy() {}

niriok_proxy::sptr niriok_proxy::make_and_open(const std::string& interface_path)
{
    nirio_status status;

    /*
       niriok_proxy_impl_v1 supports NI-RIO 13.0
       niriok_proxy_impl_v2 supports NI-RIO 14.0 and later

       We must dynamically determine which version of the RIO kernel we are
       interfacing to.  Opening the interface will fail if there is a version
       incompatibility, so we try to open successively newer interface
       proxies until it succeeds.
    */

    sptr proxy_v1(new niriok_proxy_impl_v1);
    status = proxy_v1->open(interface_path);

    if (nirio_status_not_fatal(status))
        return proxy_v1;

    sptr proxy_v2(new niriok_proxy_impl_v2);
    status = proxy_v2->open(interface_path);

    if (nirio_status_not_fatal(status))
        return proxy_v2;

    throw uhd::runtime_error(
        "Unable to detect a supported version of the NI-RIO kernel interface.");
}
}} // namespace uhd::niusrprio

#if defined(__clang__) || defined(__GNUC__) && (__GNUC__ > 3) && (__GNUC_MINOR__ > 5)
#    pragma GCC diagnostic pop
#endif
