/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkQuadEdgeMeshLineCell_hxx
#define itkQuadEdgeMeshLineCell_hxx

#include "itkCellInterfaceVisitor.h"

namespace itk
{
// ---------------------------------------------------------------------
template <typename TCellInterface>
QuadEdgeMeshLineCell<TCellInterface>::QuadEdgeMeshLineCell()
{
  m_Identifier = 0;
  m_QuadEdgeGeom = new QEType;

  auto * e2 = new QEType;
  auto * e1 = new QEDual;
  auto * e3 = new QEDual;
  this->m_QuadEdgeGeom->SetRot(e1);
  e1->SetRot(e2);
  e2->SetRot(e3);
  e3->SetRot(this->m_QuadEdgeGeom);
  this->m_QuadEdgeGeom->SetOnext(this->m_QuadEdgeGeom);
  e1->SetOnext(e3);
  e2->SetOnext(e2);
  e3->SetOnext(e1);
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
QuadEdgeMeshLineCell<TCellInterface>::~QuadEdgeMeshLineCell()
{
  // ALEX: for performance issues,
  // we will assume the user calls Disconnect beforehand
  // or else it is the mesh destructor, and we can proceed.
  // if( !m_QuadEdgeGeom->IsDisconnected( ) )
  //  {
  //  m_QuadEdgeGeom->Disconnect( );
  //  }

  bool FoundNullPointer = false;

  if (m_QuadEdgeGeom)
  {
    if (m_QuadEdgeGeom->GetRot())
    {
      if (m_QuadEdgeGeom->GetRot()->GetRot())
      {
        if (m_QuadEdgeGeom->GetRot()->GetRot()->GetRot())
        {
          delete m_QuadEdgeGeom->GetRot()->GetRot()->GetRot(); // e3
          delete m_QuadEdgeGeom->GetRot()->GetRot();           // e2
          delete m_QuadEdgeGeom->GetRot();                     // e1
          delete m_QuadEdgeGeom;
        }
        else
        {
          FoundNullPointer = true;
          delete m_QuadEdgeGeom->GetRot()->GetRot(); // e2
          delete m_QuadEdgeGeom->GetRot();           // e1
          delete m_QuadEdgeGeom;
        }
      }
      else
      {
        FoundNullPointer = true;
        delete m_QuadEdgeGeom->GetRot(); // e1
        delete m_QuadEdgeGeom;
      }
    }
    else
    {
      FoundNullPointer = true;
      delete m_QuadEdgeGeom;
    }
  }
  else
  {
    FoundNullPointer = true;
  }

  if (FoundNullPointer)
  {
    // Throw exception here
  }
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
void
QuadEdgeMeshLineCell<TCellInterface>::Accept(CellIdentifier cellId, MultiVisitor * mv)
{
  using IntVis = CellInterfaceVisitor<PixelType, CellTraits>;
  typename IntVis::Pointer v = mv->GetVisitor(this->GetType());
  if (v)
  {
    v->VisitFromCell(cellId, this);
  }
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
auto
QuadEdgeMeshLineCell<TCellInterface>::GetNumberOfBoundaryFeatures(int dimension) const -> CellFeatureCount
{
  if (dimension == 0)
  {
    return 2;
  }

  if (dimension == 1)
  {
    return 1;
  }

  return 0;
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
bool
QuadEdgeMeshLineCell<TCellInterface>::GetBoundaryFeature(int                   dimension,
                                                         CellFeatureIdentifier cellId,
                                                         CellAutoPointer &     cell)
{
  // TODO : FIXME
  (void)dimension;
  (void)cellId;
  (void)cell;
  return (false);
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
void
QuadEdgeMeshLineCell<TCellInterface>::SetPointIds(PointIdConstIterator first)
{
  PointIdConstIterator i = first;

  this->GetQEGeom()->SetOrigin(*i);
  ++i;
  this->GetQEGeom()->SetDestination(*i);
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
void
QuadEdgeMeshLineCell<TCellInterface>::InternalSetPointIds(PointIdInternalConstIterator first)
{
  PointIdInternalConstIterator i = first;

  this->GetQEGeom()->SetOrigin(*i);
  ++i;
  this->GetQEGeom()->SetDestination(*i);
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
void
QuadEdgeMeshLineCell<TCellInterface>::SetPointIds(PointIdConstIterator first, PointIdConstIterator last)
{
  (void)last;
  this->GetQEGeom()->SetOrigin(*first);
  ++first;
  this->GetQEGeom()->SetDestination(*first);
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
void
QuadEdgeMeshLineCell<TCellInterface>::InternalSetPointIds(PointIdInternalConstIterator first,
                                                          PointIdInternalConstIterator last)
{
  (void)last;
  this->GetQEGeom()->SetOrigin(*first);
  ++first;
  this->GetQEGeom()->SetDestination(*first);
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
void
QuadEdgeMeshLineCell<TCellInterface>::SetPointId(int localId, PointIdentifier pId)
{
  if (localId == 0)
  {
    this->GetQEGeom()->SetOrigin(pId);
  }
  else if (localId == 1)
  {
    this->GetQEGeom()->SetDestination(pId);
  }
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
auto
QuadEdgeMeshLineCell<TCellInterface>::InternalPointIdsBegin() -> PointIdInternalIterator
{
  return (PointIdInternalIterator(this->m_QuadEdgeGeom, PointIdInternalIterator::OperatorSym, true));
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
auto
QuadEdgeMeshLineCell<TCellInterface>::InternalPointIdsEnd() -> PointIdInternalIterator
{
  return (PointIdInternalIterator(this->m_QuadEdgeGeom, PointIdInternalIterator::OperatorSym, false));
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
auto
QuadEdgeMeshLineCell<TCellInterface>::InternalGetPointIds() const -> PointIdInternalConstIterator
{
  return (PointIdInternalConstIterator(this->m_QuadEdgeGeom, PointIdInternalConstIterator::OperatorSym, true));
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
auto
QuadEdgeMeshLineCell<TCellInterface>::InternalPointIdsBegin() const -> PointIdInternalConstIterator
{
  return (PointIdInternalConstIterator(this->m_QuadEdgeGeom, PointIdInternalConstIterator::OperatorSym, true));
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
auto
QuadEdgeMeshLineCell<TCellInterface>::InternalPointIdsEnd() const -> PointIdInternalConstIterator
{
  return (PointIdInternalConstIterator(this->m_QuadEdgeGeom, PointIdInternalConstIterator::OperatorSym, false));
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
void
QuadEdgeMeshLineCell<TCellInterface>::SetIdent(CellIdentifier cid)
{
  this->m_Identifier = cid;
  this->m_QuadEdgeGeom->SetIdent(cid);
  this->m_QuadEdgeGeom->GetSym()->SetIdent(cid);
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
auto
QuadEdgeMeshLineCell<TCellInterface>::GetIdent() -> CellIdentifier
{
  return this->m_Identifier;
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
CellGeometryEnum
QuadEdgeMeshLineCell<TCellInterface>::GetType() const
{
  return CellGeometryEnum::LINE_CELL;
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
unsigned int
QuadEdgeMeshLineCell<TCellInterface>::GetDimension() const
{
  return static_cast<unsigned int>(Self::CellDimension);
}

// ---------------------------------------------------------------------
template <typename TCellInterface>
unsigned int
QuadEdgeMeshLineCell<TCellInterface>::GetNumberOfPoints() const
{
  return 2;
}
} // end namespace itk

#endif