// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause

#ifndef vtkLSDynaPart_h
#define vtkLSDynaPart_h

#include "LSDynaMetaData.h"    //needed for lsdyna types
#include "vtkIOLSDynaModule.h" // For export macro
#include "vtkObject.h"
#include "vtkStdString.h" //needed for string

VTK_ABI_NAMESPACE_BEGIN
class vtkUnstructuredGrid;
class vtkPoints;

class VTKIOLSDYNA_EXPORT vtkLSDynaPart : public vtkObject
{
public:
  static vtkLSDynaPart* New();

  vtkTypeMacro(vtkLSDynaPart, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  // Description: Set the type of the part
  void SetPartType(int type);

  // Description: Returns the type of the part
  LSDynaMetaData::LSDYNA_TYPES PartType() const { return Type; }

  // Description: Returns if the type of the part is considered valid
  bool hasValidType() const;

  vtkIdType GetUserMaterialId() const { return UserMaterialId; }
  vtkIdType GetPartId() const { return PartId; }
  bool HasCells() const;

  // Setup the part with some basic information about what it holds
  void InitPart(vtkStdString name, const vtkIdType& partId, const vtkIdType& userMaterialId,
    const vtkIdType& numGlobalPoints, const int& sizeOfWord);

  // Reserves the needed space in memory for this part
  // that way we never over allocate memory
  void AllocateCellMemory(const vtkIdType& numCells, const vtkIdType& cellLen);

  // Add a cell to the part
  void AddCell(const int& cellType, const vtkIdType& npts, vtkIdType conn[8]);

  // Description:
  // Setups the part cell topology so that we can cache information
  // between timesteps.
  void BuildToplogy();

  // Description:
  // Returns if the toplogy for this part has been constructed
  bool IsTopologyBuilt() const { return TopologyBuilt; }

  // Description:
  // Constructs the grid for this part and returns it.
  vtkUnstructuredGrid* GenerateGrid();

  // Description:
  // allows the part to store dead cells
  void EnableDeadCells(const int& deadCellsAsGhostArray);

  // Description:
  // removes the dead cells array if it exists from the grid
  void DisableDeadCells();

  // Description:
  // We set cells as dead to make them not show up during rendering
  void SetCellsDeadState(unsigned char* dead, const vtkIdType& size);

  // Description:
  // allows the part to store user cell ids
  void EnableCellUserIds();

  // Description:
  // Set the user ids for the cells of this grid
  void SetNextCellUserIds(const vtkIdType& value);

  // Description:
  // Called to init point filling for a property
  // is also able to set the point position of the grid too as that
  // is stored as a point property
  void AddPointProperty(const char* name, const vtkIdType& numComps, const bool& isIdTypeProperty,
    const bool& isProperty, const bool& isGeometryPoints);

  // Description:
  // Given a chunk of point property memory copy it to the correct
  // property on the part
  void ReadPointBasedProperty(float* data, const vtkIdType& numTuples, const vtkIdType& numComps,
    const vtkIdType& currentGlobalPointIndex);

  void ReadPointBasedProperty(double* data, const vtkIdType& numTuples, const vtkIdType& numComps,
    const vtkIdType& currentGlobalPointIndex);

  // Description:
  // Adds a property to the part
  void AddCellProperty(const char* name, const int& offset, const int& numComps);

  // Description:
  // Given the raw data converts it to be the properties for this part
  // The cell properties are woven together as a block for each cell
  void ReadCellProperties(
    float* cellProperties, const vtkIdType& numCells, const vtkIdType& numPropertiesInCell);
  void ReadCellProperties(
    double* cellsProperties, const vtkIdType& numCells, const vtkIdType& numPropertiesInCell);

  // Description:
  // Get the id of the lowest global point this part needs
  // Note: Presumes topology has been built already
  vtkIdType GetMinGlobalPointId() const;

  // Description:
  // Get the id of the largest global point this part needs
  // Note: Presumes topology has been built already
  vtkIdType GetMaxGlobalPointId() const;

protected:
  vtkLSDynaPart();
  ~vtkLSDynaPart() override;

  vtkUnstructuredGrid* RemoveDeletedCells();

  void BuildUniquePoints();
  void BuildCells();

  void GetPropertyData(const char* name, const vtkIdType& numComps, const bool& isIdTypeArray,
    const bool& isProperty, const bool& isGeometry);

  template <typename T>
  void AddPointInformation(T* buffer, T* pointData, const vtkIdType& numTuples,
    const vtkIdType& numComps, const vtkIdType& currentGlobalPointIndex);

  // basic info about the part
  LSDynaMetaData::LSDYNA_TYPES Type;
  vtkStdString Name;
  vtkIdType UserMaterialId;
  vtkIdType PartId;

  vtkIdType NumberOfCells;
  vtkIdType NumberOfPoints;
  vtkIdType NumberOfGlobalPoints;

  bool DeadCellsAsGhostArray;
  bool HasDeadCells;

  bool TopologyBuilt;
  bool DoubleBased;

  vtkUnstructuredGrid* Grid;
  vtkUnstructuredGrid* ThresholdGrid;

  vtkPoints* Points;

  class InternalCells;
  InternalCells* Cells;

  class InternalCellProperties;
  InternalCellProperties* CellProperties;

  class InternalPointsUsed;
  class DensePointsUsed;
  class SparsePointsUsed;
  InternalPointsUsed* GlobalPointsUsed;

  // used when reading properties
  class InternalCurrentPointInfo;
  InternalCurrentPointInfo* CurrentPointPropInfo;

private:
  vtkLSDynaPart(const vtkLSDynaPart&) = delete;
  void operator=(const vtkLSDynaPart&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif // vtkLSDynaPart_h