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#pragma once

#include <iostream>

#include <pdal/Reader.hpp>
#include <draco/point_cloud/point_cloud.h>
#include <draco/compression/decode.h>

namespace pdal
{

class PDAL_EXPORT DracoReader : public Reader
{
public:

    DracoReader() = default;
    std::string getName() const override;
private:
    virtual void addArgs(ProgramArgs& args) override;
    virtual void initialize() override;
    void addOneDimension(Dimension::Id id, const draco::PointAttribute* attr, PointLayoutPtr layout, int index, int attNum);
    virtual void addDimensions(PointLayoutPtr layout) override;
    virtual void prepared(PointTableRef) override;
    virtual void ready(PointTableRef) override;
    virtual point_count_t read(PointViewPtr view, point_count_t count) override;
    virtual void done(PointTableRef table) override;

    struct DimensionInfo {
        Dimension::Id pdalId;
        const draco::PointAttribute *attr;
        Dimension::Type pdalType;
        int attNum;//eg POSITION = [ X, Y, Z ], Y's attNum would be 1
    };
    std::vector<DimensionInfo> m_dimensions;
    DracoReader(const DracoReader&) = delete;
    DracoReader& operator=(const DracoReader&) = delete;

    std::istream* m_istreamPtr;
    std::vector<char> m_data;
    draco::DecoderBuffer m_draco_buffer;
    std::unique_ptr<draco::PointCloud> m_pc;

};

} // namespace pdal
