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#pragma once

#include <pdal/Filter.hpp>
#include <pdal/Streamable.hpp>

namespace pdal
{

class BOX3D;

// This is just a pass-through filter, which collects some data about
// the points that are fed through it
class PDAL_DLL InfoFilter : public Filter, public Streamable
{
    struct NearPoint
    {
        NearPoint(PointId id, double dist, std::vector<char>&& data) :
            m_id(id), m_dist(dist), m_data(data)
        {}

        PointId m_id;
        double m_dist;
        std::vector<char> m_data;

        bool operator < (const NearPoint& other) const
            { return m_dist < other.m_dist; }
    };

public:
    InfoFilter() :
        m_pointRoot("point"), m_queryCount(10),
        m_queryZ(std::numeric_limits<double>::quiet_NaN())
    {}

    std::string getName() const;
    BOX3D bounds() const
        { return m_bounds; }

private:
    virtual void addArgs(ProgramArgs& args);
    virtual void initialize(PointTableRef table);
    virtual void ready(PointTableRef table);
    virtual bool processOne(PointRef& point);
    virtual void prepared(PointTableRef table);
    virtual void done(PointTableRef table);
    virtual void filter(PointView& view);

    void parsePointSpec();
    void parseQuerySpec();

    MetadataNode m_pointRoot;

    std::string m_querySpec;
    point_count_t m_queryCount;
    double m_queryX;
    double m_queryY;
    double m_queryZ;
    std::list<NearPoint> m_results;

    std::string m_pointSpec;
    PointIdList m_idList;
    PointIdList::const_iterator m_idCur;
    DimTypeList m_dims;
    size_t m_pointSize;
    PointId m_count;

    BOX3D m_bounds;
};

} // namespace pdal
