#ifndef Hadrons_MDistil_DistilVectors_hpp_
#define Hadrons_MDistil_DistilVectors_hpp_

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

BEGIN_HADRONS_NAMESPACE

/******************************************************************************
 *  *      Class to generate Distillation $\varrho$ and $\varphi$ vectors        *
 *   ******************************************************************************/
/*
 * template <typename FImpl>
 * class DistilVectorsFromPerambulator
 * {
 * public:
 *     FERM_TYPE_ALIASES(FImpl,);
 *         SOLVER_TYPE_ALIASES(FImpl,);
 *         public:
 *             DistilVectorsFromPerambulator(FMat &action);
 *                 virtual ~DistilVectorsFromPerambulator(void) = default;
 *                     void makeRho(FermionField &rhoOut,
 *                                           const FermionField &evec, const Complex &noises);
 *                                               void makePhi(FermionField &phiOut,
 *                                                                     const FermionField &evec, const SpinVector &Perambulators);
 *                                                                     private:
 *                                                                         GridBase                                 *fGrid_, *frbGrid_, *gGrid_;
 *                                                                             bool                                     is5d_;
 *                                                                                 FermionField                             src_o_, sol_e_, sol_o_, tmp_, tmp5_;
 *                                                                                 };
 *
 *                                                                                 */


/******************************************************************************
 *  *  *               A2AVectorsSchurDiagTwo template implementation               *
 *   *   ******************************************************************************/
/*
 *
 * template <typename FImpl>
 * A2AVectorsSchurDiagTwo<FImpl>::A2AVectorsSchurDiagTwo(FMat &action)
 * : action_(action)
 * , fGrid_(action_.FermionGrid())
 * , frbGrid_(action_.FermionRedBlackGrid())
 * , gGrid_(action_.GaugeGrid())
 * , src_o_(frbGrid_)
 * , sol_e_(frbGrid_)
 * , sol_o_(frbGrid_)
 * , tmp_(frbGrid_)
 * , tmp5_(fGrid_)
 * , op_(action_)
 * {}
 *
 * template <typename FImpl>
 * void A2AVectorsSchurDiagTwo<FImpl>::makeRho(FermionField &rhoOut, const FermionField &evec, const Complex &noises)
 * {
 *
 *   LatticeSpinColourVector tmp2(grid4d);
 *     LatticeSpinColourVector tmp3d(grid3d);
 *       LatticeColourVector tmp3d_nospin(grid3d);
 *         LatticeColourVector tmp_nospin(grid4d);
 *

  for (int inoise = 0; inoise < nnoise; inoise++) {
    for (int dk = 0; dk < LI; dk++) {
      for (int dt = 0; dt < Nt_inv; dt++) {
        if(full_tdil) dt=tsrc; //TODO: this works for now, as longs as tsrc=0, but will crash otherwise!
        for (int ds = 0; ds < Ns; ds++) {
          vecindex = inoise + nnoise * dk + nnoise * LI * ds + nnoise *LI * Ns*dt;
          sources_tsrc[vecindex] = zero;
          tmp3d_nospin = zero;
          for (int it = dt; it < Nt; it += TI){
            if( it >= Ntfirst && it < Ntfirst + Ntlocal ) {
              for (int ik = dk; ik < nvec; ik += LI){
                for (int is = ds; is < Ns; is += Ns){ //at the moment, full spin dilution is enforced
                  tmp3d_nospin = eig[it].evec[ik] * noises[inoise][it][ik]()(is)(); //noises do not have to be a spin vector
                  tmp3d=zero;
                  pokeSpin(tmp3d,tmp3d_nospin,is);
                  tmp2=zero;
#ifdef USE_LOCAL_SLICES
                  InsertSliceLocal(tmp3d,tmp2,0,it-Ntfirst,Grid::QCD::Tdir);
#else
                  InsertSlice(tmp3d,tmp2,it,Grid::QCD::Tdir);
#endif
                  sources_tsrc[vecindex] += tmp2;
                }
              }
            }
          }
        }
      }
    }
  }


}

*/



/******************************************************************************
 *                         DistilVectors                                 *
 ******************************************************************************/
BEGIN_MODULE_NAMESPACE(MDistil)

class DistilVectorsPar: Serializable
{
public:
    GRID_SERIALIZABLE_CLASS_MEMBERS(DistilVectorsPar,
                                    unsigned int, i);
};

template <typename FImpl>
class TDistilVectors: public Module<DistilVectorsPar>
{
public:
    // constructor
    TDistilVectors(const std::string name);
    // destructor
    virtual ~TDistilVectors(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(DistilVectors, TDistilVectors<FIMPL>, MDistil);

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

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

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

// setup ///////////////////////////////////////////////////////////////////////
template <typename FImpl>
void TDistilVectors<FImpl>::setup(void)
{
    
}

// execution ///////////////////////////////////////////////////////////////////
template <typename FImpl>
void TDistilVectors<FImpl>::execute(void)
{
    
}

END_MODULE_NAMESPACE

END_HADRONS_NAMESPACE

#endif // Hadrons_MDistil_DistilVectors_hpp_