/*************************************************************************************

Grid physics library, www.github.com/paboyle/Grid 

Source file: Hadrons/Modules/MIO/LoadA2AVectors.hpp

Copyright (C) 2015-2018

Author: Antonin Portelli <antonin.portelli@me.com>

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 2 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, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/*  END LEGAL */
#ifndef Hadrons_MIO_LoadA2AVectors_hpp_
#define Hadrons_MIO_LoadA2AVectors_hpp_

#include <Hadrons/Global.hpp>
#include <Hadrons/Module.hpp>
#include <Hadrons/ModuleFactory.hpp>
#include <Hadrons/A2AVectors.hpp>

BEGIN_HADRONS_NAMESPACE

/******************************************************************************
 *                    Module to load all-to-all vectors                       *
 ******************************************************************************/
BEGIN_MODULE_NAMESPACE(MIO)

class LoadA2AVectorsPar: Serializable
{
public:
    GRID_SERIALIZABLE_CLASS_MEMBERS(LoadA2AVectorsPar,
                                    std::string,  filestem,
                                    bool,         multiFile,
                                    unsigned int, size);
};

template <typename FImpl>
class TLoadA2AVectors: public Module<LoadA2AVectorsPar>
{
public:
    FERM_TYPE_ALIASES(FImpl,);
public:
    // constructor
    TLoadA2AVectors(const std::string name);
    // destructor
    virtual ~TLoadA2AVectors(void) {};
    // dependency relation
    virtual std::vector<std::string> getInput(void);
    virtual std::vector<std::string> getOutput(void);
    // setup
    virtual void setup(void);
    // execution
    virtual void execute(void);
};

MODULE_REGISTER_TMP(LoadA2AVectors, TLoadA2AVectors<FIMPL>, MIO);

/******************************************************************************
 *                      TLoadA2AVectors implementation                        *
 ******************************************************************************/
// constructor /////////////////////////////////////////////////////////////////
template <typename FImpl>
TLoadA2AVectors<FImpl>::TLoadA2AVectors(const std::string name)
: Module<LoadA2AVectorsPar>(name)
{}

// dependencies/products ///////////////////////////////////////////////////////
template <typename FImpl>
std::vector<std::string> TLoadA2AVectors<FImpl>::getInput(void)
{
    std::vector<std::string> in;
    
    return in;
}

template <typename FImpl>
std::vector<std::string> TLoadA2AVectors<FImpl>::getOutput(void)
{
    std::vector<std::string> out = {getName()};
    
    return out;
}

// setup ///////////////////////////////////////////////////////////////////////
template <typename FImpl>
void TLoadA2AVectors<FImpl>::setup(void)
{
    envCreate(std::vector<FermionField>, getName(), 1, par().size, 
              envGetGrid(FermionField));
}

// execution ///////////////////////////////////////////////////////////////////
template <typename FImpl>
void TLoadA2AVectors<FImpl>::execute(void)
{
    auto &vec = envGet(std::vector<FermionField>, getName());

    A2AVectorsIo::read(vec, par().filestem, par().multiFile, vm().getTrajectory());
}

END_MODULE_NAMESPACE

END_HADRONS_NAMESPACE

#endif // Hadrons_MIO_LoadA2AVectors_hpp_