//
// Copyright 2016 Ettus Research
//
// 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
//

#include "power_container_impl.hpp"
#include <uhd/exception.hpp>
#include <boost/format.hpp>

using namespace uhd;
using namespace uhd::cal;

power_container::sptr power_container::make()
{
    return power_container::sptr(new power_container_impl());
}

power_container_impl::power_container_impl() :
    _nargs(0), _mode(interp_mode_t::NEAREST)
{
    /* NOP */
}

double power_container_impl::get(const std::vector<double> &args)
{
    this->verify_nargs(args);
    switch (_mode)
    {
        case interp_mode_t::BILINEAR :
            return _interpolator.bl_interp(_data, args);
        case interp_mode_t::NEAREST  :
            return _interpolator.nn_interp(_data, args);
        default:
            return _interpolator.nn_interp(_data, args);
    }
}

void power_container_impl::add(const double output, const std::vector<double> &args)
{
    if (_nargs == 0)
    {
        _nargs = args.size();
        _mode = _nargs == 2 ? interp_mode_t::BILINEAR : interp_mode_t::NEAREST;
    }
    this->verify_nargs(args);
    _data[args] = output;
}

void power_container_impl::add_metadata(const power_container::metadata_t &data)
{
    _metadata = data;
}

const power_container_impl::metadata_t &power_container_impl::get_metadata()
{
    return _metadata;
}

void power_container_impl::verify_nargs(const std::vector<double> &args)
{
    // Check that the number of arguments expected are correct
    if (args.size() != _nargs) {
        throw uhd::assertion_error(str(boost::format(
            "power_container_impl: Expected %d number of arguments/values instead of %d")
            % _nargs % args.size()
        ));
    }
}