////////////////////////////////////////////////////////////////////////////////
//
//  File: InputStar.h
//
//  For more information, please see: http://www.nektar.info/
//
//  The MIT License
//
//  Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
//  Department of Aeronautics, Imperial College London (UK), and Scientific
//  Computing and Imaging Institute, University of Utah (USA).
//
//  Permission is hereby granted, free of charge, to any person obtaining a
//  copy of this software and associated documentation files (the "Software"),
//  to deal in the Software without restriction, including without limitation
//  the rights to use, copy, modify, merge, publish, distribute, sublicense,
//  and/or sell copies of the Software, and to permit persons to whom the
//  Software is furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included
//  in all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
//  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
//  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
//  DEALINGS IN THE SOFTWARE.
//
//  Description:
//
////////////////////////////////////////////////////////////////////////////////

#ifndef UTILITIES_NEKMESH_INPUTSTAR
#define UTILITIES_NEKMESH_INPUTSTAR

#include <NekMesh/Module/Module.h>

#include <libccmio/ccmio.h>

namespace Nektar::NekMesh
{
/// Converter for VTK files.
class InputStar : public NekMesh::InputModule
{
public:
    /// Creates an instance of this class
    static NekMesh::ModuleSharedPtr create(NekMesh::MeshSharedPtr m)
    {
        return MemoryManager<InputStar>::AllocateSharedPtr(m);
    }
    static NekMesh::ModuleKey className;

    InputStar(NekMesh::MeshSharedPtr m);
    ~InputStar() override;

    /// Populate and validate required data structures.
    void Process() override;

    void ReadZone(int &nComposite);

    std::string GetModuleName() override
    {
        return "InputStar";
    }

protected:
    void GenElement3D(std::vector<NekMesh::NodeSharedPtr> &Nodes, int i,
                      std::vector<int> &ElementFaces,
                      std::unordered_map<int, std::vector<int>> &FaceNodes,
                      int ncomposite, bool DoOrient);

    void GenElement2D(std::vector<NekMesh::NodeSharedPtr> &Nodes, int i,
                      std::vector<int> &FaceNodes, int ncomposite);

    Array<OneD, int> SortEdgeNodes(std::vector<NekMesh::NodeSharedPtr> &Nodes,
                                   std::vector<int> &FaceNodes);

    Array<OneD, int> SortFaceNodes(
        std::vector<NekMesh::NodeSharedPtr> &Nodes,
        std::vector<int> &ElementFaces,
        std::unordered_map<int, std::vector<int>> &FaceNodes);

    void ResetNodes(std::vector<NekMesh::NodeSharedPtr> &Nodes,
                    Array<OneD, std::vector<int>> &ElementFaces,
                    std::unordered_map<int, std::vector<int>> &FaceNodes);

private:
    CCMIOError m_ccmErr;   // Star CCM error flag
    CCMIOID m_ccmTopology; // Star CCM mesh topology
    CCMIOID m_ccmProcessor;
    std::map<int, std::string> m_faceLabels; // label from CCM into composite

    void InitCCM(void);

    void ReadNodes(std::vector<NekMesh::NodeSharedPtr> &Nodes);

    void ReadInternalFaces(
        std::unordered_map<int, std::vector<int>> &FacesNodes,
        Array<OneD, std::vector<int>> &ElementFaces);

    void ReadBoundaryFaces(
        std::vector<std::vector<int>> &BndElementFaces,
        std::unordered_map<int, std::vector<int>> &FacesNodes,
        Array<OneD, std::vector<int>> &ElementFaces,
        std::vector<std::string> &facelabels);

    void SetupElements(void);
};
} // namespace Nektar::NekMesh

#endif
