// @HEADER
// ************************************************************************
//
//               Rapid Optimization Library (ROL) Package
//                 Copyright (2014) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact lead developers:
//              Drew Kouri   (dpkouri@sandia.gov) and
//              Denis Ridzal (dridzal@sandia.gov)
//
// ************************************************************************
// @HEADER

#include "../../TOOLS/meshmanager.hpp"

template <class Real>
class MeshManager_Poisson_TopOpt : public MeshManager_Rectangle<Real> {

private:

  int nx_;
  int ny_;
  Teuchos::RCP<std::vector<std::vector<Intrepid::FieldContainer<int> > > >  meshSideSets_;

public: 

  MeshManager_Poisson_TopOpt(Teuchos::ParameterList &parlist) : MeshManager_Rectangle<Real>(parlist)
  {
    nx_ = parlist.sublist("Geometry").get("NX", 3);
    ny_ = parlist.sublist("Geometry").get("NY", 3);
    computeSideSets();
  }


  void computeSideSets() {

    int numSideSets = 4;
    meshSideSets_ = Teuchos::rcp(new std::vector<std::vector<Intrepid::FieldContainer<int> > >(numSideSets));

    int ny3 = ny_ / 3;
    int nyr = ny_ % 3;

    int n1 = (nyr == 2) ? ny3+1 : ny3;
    int n2 = (nyr == 1) ? ny3+1 : ny3;
    int n3 = (nyr == 2) ? ny3+1 : ny3;

    // Neumann sides
    (*meshSideSets_)[0].resize(4);
    (*meshSideSets_)[0][0].resize(nx_); // x = (0,1), y = {0}
    (*meshSideSets_)[0][1].resize(ny_); // x = {1}, y = (0,1)
    (*meshSideSets_)[0][2].resize(nx_); // x = (0,1), y = {1}
    (*meshSideSets_)[0][3].resize(0);
    // Neumann side
    (*meshSideSets_)[1].resize(4);
    (*meshSideSets_)[1][0].resize(0);
    (*meshSideSets_)[1][1].resize(0);
    (*meshSideSets_)[1][2].resize(0);
    (*meshSideSets_)[1][3].resize(n1);
    // Dirichlet side
    (*meshSideSets_)[2].resize(4);
    (*meshSideSets_)[2][0].resize(0);
    (*meshSideSets_)[2][1].resize(0);
    (*meshSideSets_)[2][2].resize(0);
    (*meshSideSets_)[2][3].resize(n2);
    // Neuman side
    (*meshSideSets_)[3].resize(4);
    (*meshSideSets_)[3][0].resize(0);
    (*meshSideSets_)[3][1].resize(0);
    (*meshSideSets_)[3][2].resize(0);
    (*meshSideSets_)[3][3].resize(n3);
    
    for (int i=0; i<nx_; ++i) {
      (*meshSideSets_)[0][0](i) = i;
    }
    for (int i=0; i<ny_; ++i) {
      (*meshSideSets_)[0][1](i) = (i+1)*nx_-1;
    }
    for (int i=0; i<nx_; ++i) {
      (*meshSideSets_)[0][2](i) = i + nx_*(ny_-1);
    }
    for (int i=0; i<ny_; ++i) {
      if ( i < n1 ) {
        (*meshSideSets_)[1][3](i) = i*nx_;
      }
      if ( i >= n1 && i < n1+n2 ) {
        (*meshSideSets_)[2][3](i-n1) = i*nx_;
      }
      if ( i >= n1+n2 ) {
        (*meshSideSets_)[3][3](i-n1-n2) = i*nx_;
      }
    }

  } // computeSideSets

  Teuchos::RCP<std::vector<std::vector<Intrepid::FieldContainer<int> > > > getSideSets(
      std::ostream & outStream = std::cout,
      const bool verbose = false) const {
    if ( verbose ) {
      outStream << "Mesh_Poisson_TopOpt: getSideSets called" << std::endl;
      outStream << "Mesh_Poisson_TopOpt: numSideSets = " << meshSideSets_->size() << std::endl;
    }
    return meshSideSets_;
  }
  
}; // MeshManager_TopoOpt
