/******************************************************************************
* Copyright (c) 2019, Helix Re Inc.
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* modification, are permitted provided that the following
* conditions are met:
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*       notice, this list of conditions and the following disclaimer.
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*       with the distribution.
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*       names of its contributors may be used to endorse or promote
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*       written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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****************************************************************************/

#pragma once

#include <pdal/pdal_types.hpp>
#include <E57Format.h>
#include <pdal/Writer.hpp>
#include <pdal/Streamable.hpp>

namespace pdal
{
class E57Writer : public pdal::Writer, public pdal::Streamable 
{

    class ChunkWriter {
    public:
        ChunkWriter(const std::vector<std::string> &dimensionsToWrite,
            e57::CompressedVectorNode &vectorNode);

        void write(pdal::PointRef &point);

        void finalise();

    private:
        const pdal::point_count_t m_defaultChunkSize;
        pdal::point_count_t m_currentIndex;
        std::map<std::string, std::vector<double>> m_doubleBuffers;
        std::vector<e57::SourceDestBuffer> m_e57buffers;
        std::unique_ptr<e57::CompressedVectorWriter> m_dataWriter;
    };

public:
    E57Writer();
    ~E57Writer();
    E57Writer(const E57Writer &) = delete;
    E57Writer& operator=(const E57Writer&) = delete;

    std::string getName() const;

private:
    virtual void addArgs(ProgramArgs &args);
    virtual void initialize();
    virtual bool processOne(PointRef & point);
    virtual void ready(PointTableRef table);
    virtual void write(const PointViewPtr view);
    virtual void done(PointTableRef table);

    void setupFileHeader();

    void setupWriter();

    // Writer parameters
    std::string m_filename;
    bool m_doublePrecision;

    // e57 file objects
    std::unique_ptr<e57::ImageFile> m_imageFile;
    std::unique_ptr<e57::StructureNode> m_rootNode;
    std::unique_ptr<ChunkWriter> m_chunkWriter;
    std::unique_ptr<e57::StructureNode>  m_scanNode;

    // What do we write?
    std::vector<std::string> m_dimensionsToWrite;

    // Bounds
    BOX3D m_bbox;
};
}
