/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2011-     Statoil ASA
//  Copyright (C) 2013-     Ceetron Solutions AS
//  Copyright (C) 2011-2012 Ceetron AS
//
//  ResInsight is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
//  FITNESS FOR A PARTICULAR PURPOSE.
//
//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#pragma once

#include "RifReaderInterface.h"
#include "RigFault.h"

#include "cvfBoundingBox.h"
#include "cvfStructGrid.h"
#include "cvfStructGridGeometryGenerator.h"
#include "cvfVector3.h"

#include <string>
#include <vector>

class RigMainGrid;
class RigCell;
class RigActiveCellInfo;

class RigGridBase : public cvf::StructGridInterface
{
public:
    explicit RigGridBase( RigMainGrid* mainGrid );
    ~RigGridBase() override;

    void        setGridPointDimensions( const cvf::Vec3st& gridDimensions ) { m_gridPointDimensions = gridDimensions; }
    cvf::Vec3st gridPointDimensions() { return m_gridPointDimensions; }

    size_t         cellCount() const { return cellCountI() * cellCountJ() * cellCountK(); }
    RigCell&       cell( size_t gridLocalCellIndex );
    const RigCell& cell( size_t gridLocalCellIndex ) const;

    size_t reservoirCellIndex( size_t gridLocalCellIndex ) const;
    void   setIndexToStartOfCells( size_t indexToStartOfCells ) { m_indexToStartOfCells = indexToStartOfCells; }

    void   setGridIndex( size_t index ) { m_gridIndex = index; }
    size_t gridIndex() const { return m_gridIndex; }

    void setGridId( int id ) { m_gridId = id; }
    int  gridId() const { return m_gridId; }

    double characteristicIJCellSize() const;

    std::string gridName() const;
    void        setGridName( const std::string& gridName );

    bool         isMainGrid() const;
    RigMainGrid* mainGrid() const { return m_mainGrid; }

    size_t coarseningBoxCount() const { return m_coarseningBoxInfo.size(); }
    size_t addCoarseningBox( size_t i1, size_t i2, size_t j1, size_t j2, size_t k1, size_t k2 );

    void coarseningBox( size_t coarseningBoxIndex, size_t* i1, size_t* i2, size_t* j1, size_t* j2, size_t* k1, size_t* k2 ) const;

    cvf::BoundingBox boundingBox();

    virtual bool               isTempGrid() const             = 0;
    virtual const std::string& associatedWellPathName() const = 0;

protected:
    friend class RigMainGrid; //::initAllSubGridsParentGridPointer();
    void initSubGridParentPointer();
    void initSubCellsMainGridCellIndex();

    // Interface implementation
public:
    size_t gridPointCountI() const override;
    size_t gridPointCountJ() const override;
    size_t gridPointCountK() const override;

    cvf::Vec3d minCoordinate() const override;
    cvf::Vec3d maxCoordinate() const override;
    cvf::Vec3d displayModelOffset() const override;

    size_t cellIndexFromIJK( size_t i, size_t j, size_t k ) const override;
    size_t cellIndexFromIJKUnguarded( size_t i, size_t j, size_t k ) const;
    bool   ijkFromCellIndex( size_t cellIndex, size_t* i, size_t* j, size_t* k ) const override;
    void   ijkFromCellIndexUnguarded( size_t cellIndex, size_t* i, size_t* j, size_t* k ) const;

    bool       cellIJKFromCoordinate( const cvf::Vec3d& coord, size_t* i, size_t* j, size_t* k ) const override;
    void       cellCornerVertices( size_t cellIndex, cvf::Vec3d vertices[8] ) const override;
    cvf::Vec3d cellCentroid( size_t cellIndex ) const override;

    void cellMinMaxCordinates( size_t cellIndex, cvf::Vec3d* minCoordinate, cvf::Vec3d* maxCoordinate ) const override;

    size_t     gridPointIndexFromIJK( size_t i, size_t j, size_t k ) const override;
    cvf::Vec3d gridPointCoordinate( size_t i, size_t j, size_t k ) const override;

    bool isCellValid( size_t i, size_t j, size_t k ) const override;
    bool cellIJKNeighbor( size_t i, size_t j, size_t k, FaceType face, size_t* neighborCellIndex ) const override;
    void cellIJKNeighborUnguarded( size_t i, size_t j, size_t k, FaceType face, size_t* neighborCellIndex ) const;

private:
    std::string      m_gridName;
    cvf::Vec3st      m_gridPointDimensions;
    size_t           m_indexToStartOfCells; ///< Index into the global cell array stored in main-grid where this grids cells starts.
    size_t           m_gridIndex; ///< The LGR index of this grid. Starts with 1. Main grid has index 0.
    int              m_gridId; ///< The LGR id of this grid. Main grid has id 0.
    RigMainGrid*     m_mainGrid;
    cvf::BoundingBox m_boundingBox;

    std::vector<std::array<size_t, 6>> m_coarseningBoxInfo;
};

class RigGridCellFaceVisibilityFilter : public cvf::CellFaceVisibilityFilter
{
public:
    explicit RigGridCellFaceVisibilityFilter( const RigGridBase* grid )
        : m_grid( grid )
    {
    }

    bool isFaceVisible( size_t i, size_t j, size_t k, cvf::StructGridInterface::FaceType face, const cvf::UByteArray* cellVisibility ) const override;

private:
    const RigGridBase* m_grid;
};