/*
 * UnitEm.cpp, part of Hadrons (https://github.com/aportelli/Hadrons)
 *
 * Copyright (C) 2015 - 2023
 *
 * Author: Antonin Portelli <antonin.portelli@me.com>
 *
 * Hadrons 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 2 of the License, or
 * (at your option) any later version.
 *
 * Hadrons 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 Hadrons.  If not, see <http://www.gnu.org/licenses/>.
 *
 * See the full license in the file "LICENSE" in the top level distribution 
 * directory.
 */

/*  END LEGAL */
#include <Hadrons/Modules/MGauge/UnitEm.hpp>

using namespace Grid;
using namespace Hadrons;
using namespace MGauge;

/******************************************************************************
*                  TStochEm implementation                             *
******************************************************************************/
// constructor /////////////////////////////////////////////////////////////////
TUnitEm::TUnitEm(const std::string name)
: Module<NoPar>(name)
{}

// dependencies/products ///////////////////////////////////////////////////////
std::vector<std::string> TUnitEm::getInput(void)
{
    return std::vector<std::string>();
}

std::vector<std::string> TUnitEm::getOutput(void)
{
    std::vector<std::string> out = {getName()};
    
    return out;
}

// setup ///////////////////////////////////////////////////////////////////////
void TUnitEm::setup(void)
{
    envCreateLat(EmField, getName());
}

// execution ///////////////////////////////////////////////////////////////////
void TUnitEm::execute(void)
{
    PhotonR photon(envGetGrid(EmField), 0, 0); // Just chose arbitrary input values here
    auto    &a = envGet(EmField, getName());
    LOG(Message) << "Generating unit EM potential..." << std::endl;
    photon.UnitField(a);
}