/******************************************************************************
 *
 * Project:  VICAR Driver; JPL/MIPL VICAR Format
 * Purpose:  Implementation of VICARDataset
 * Author:   Even Rouault, <even.rouault at spatialys.com>
 *
 ******************************************************************************
 * Copyright (c) 2014, Sebastian Walter <sebastian dot walter at fu-berlin dot
 *de> Copyright (c) 2019, Even Rouault, <even.rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/

#ifndef VICARDATASET_H
#define VICARDATASET_H

#include "cpl_string.h"
#include "gdal_frmts.h"
#include "ogr_spatialref.h"
#include "ogrsf_frmts.h"
#include "rawdataset.h"
#include "vicarkeywordhandler.h"
#include <array>

/************************************************************************/
/* ==================================================================== */
/*                             VICARDataset                             */
/* ==================================================================== */
/************************************************************************/

class VICARDataset final : public RawDataset
{
    friend class VICARRawRasterBand;
    friend class VICARBASICRasterBand;

    VSILFILE *fpImage = nullptr;

    VICARKeywordHandler oKeywords;

    enum CompressMethod
    {
        COMPRESS_NONE,
        COMPRESS_BASIC,
        COMPRESS_BASIC2,
    };

    CompressMethod m_eCompress = COMPRESS_NONE;

    int m_nRecordSize = 0;
    vsi_l_offset m_nImageOffsetWithoutNBB = 0;
    int m_nLastRecordOffset = 0;
    std::vector<vsi_l_offset> m_anRecordOffsets{};  // for BASIC/BASIC2
    std::vector<GByte> m_abyCodedBuffer{};
    vsi_l_offset m_nLabelSize = 0;

    CPLJSONObject m_oJSonLabel;
    CPLStringList m_aosVICARMD;

    bool m_bGotTransform = false;
    std::array<double, 6> m_adfGeoTransform = {{0.0, 1.0, 0, 0.0, 0.0, 1.0}};

    OGRSpatialReference m_oSRS;

    std::unique_ptr<OGRLayer> m_poLayer;

    bool m_bGeoRefFormatIsMIPL = true;

    CPLString m_osLatitudeType;        // creation only
    CPLString m_osLongitudeDirection;  // creation only
    CPLString m_osTargetName;          // creation only
    bool m_bIsLabelWritten = true;     // creation only
    bool m_bUseSrcLabel = true;        // creation only
    bool m_bUseSrcMap = false;         // creation only
    bool m_bInitToNodata = false;      // creation only
    CPLJSONObject m_oSrcJSonLabel;     // creation only

    const char *GetKeyword(const char *pszPath, const char *pszDefault = "");
    void WriteLabel();
    void PatchLabel();
    void BuildLabel();
    void InvalidateLabel();

    static VICARDataset *CreateInternal(const char *pszFilename, int nXSize,
                                        int nYSize, int nBands,
                                        GDALDataType eType,
                                        char **papszOptions);

    void ReadProjectionFromMapGroup();
    void BuildLabelPropertyMap(CPLJSONObject &oLabel);
#if defined(HAVE_TIFF) && defined(HAVE_GEOTIFF)
    void ReadProjectionFromGeoTIFFGroup();
    void BuildLabelPropertyGeoTIFF(CPLJSONObject &oLabel);
#endif

    CPLErr Close() override;

  public:
    VICARDataset();
    virtual ~VICARDataset();

    CPLErr GetGeoTransform(double *padfTransform) override;
    CPLErr SetGeoTransform(double *padfTransform) override;

    const OGRSpatialReference *GetSpatialRef() const override;
    CPLErr SetSpatialRef(const OGRSpatialReference *poSRS) override;

    bool GetRawBinaryLayout(GDALDataset::RawBinaryLayout &) override;

    char **GetMetadataDomainList() override;
    char **GetMetadata(const char *pszDomain = "") override;
    CPLErr SetMetadata(char **papszMD, const char *pszDomain = "") override;

    int GetLayerCount() override
    {
        return m_poLayer ? 1 : 0;
    }

    OGRLayer *GetLayer(int i) override
    {
        return (m_poLayer && i == 0) ? m_poLayer.get() : nullptr;
    }

    static GDALDataset *Open(GDALOpenInfo *);
    static GDALDataset *Create(const char *pszFilename, int nXSize, int nYSize,
                               int nBands, GDALDataType eType,
                               char **papszOptions);
    static GDALDataset *CreateCopy(const char *pszFilename,
                                   GDALDataset *poSrcDS, int bStrict,
                                   char **papszOptions,
                                   GDALProgressFunc pfnProgress,
                                   void *pProgressData);

    static GDALDataType GetDataTypeFromFormat(const char *pszFormat);
    static bool GetSpacings(const VICARKeywordHandler &keywords,
                            GUInt64 &nPixelOffset, GUInt64 &nLineOffset,
                            GUInt64 &nBandOffset,
                            GUInt64 &nImageOffsetWithoutNBB, GUInt64 &nNBB,
                            GUInt64 &nImageSize);
};

#endif  // VICARDATASET_H