/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2019                                                               *
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 * permit persons to whom the Software is furnished to do so, subject to the following   *
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 * or substantial portions of the Software.                                              *
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#ifndef __OPENSPACE_MODULE_GAIA___CONSTRUCTOCTREETASK___H__
#define __OPENSPACE_MODULE_GAIA___CONSTRUCTOCTREETASK___H__

#include <openspace/util/task.h>

#include <modules/gaia/rendering/octreeculler.h>
#include <modules/gaia/rendering/octreemanager.h>

namespace openspace {

namespace documentation { struct Documentation; }

class ConstructOctreeTask : public Task {
public:
    ConstructOctreeTask(const ghoul::Dictionary& dictionary);
    virtual ~ConstructOctreeTask() = default;

    std::string description() override;
    void perform(const Task::ProgressCallback& onProgress) override;
    static documentation::Documentation Documentation();

private:
    const int RENDER_VALUES = 8;

    /**
     * Reads a single binary file with preprocessed star data and insert the render values
     * into an octree structure (if star data passed all defined filters).
     * Stores the entire octree in one binary file.
     */
    void constructOctreeFromSingleFile(const Task::ProgressCallback& progressCallback);

    /**
     *  Reads binary star data from 8 preprocessed files (one per branch) in specified
     * folder, prepared by ReadFitsTask, and inserts star render data into an octree
     * (if star data passed all defined filters).
     * Stores octree structure in a binary index file and stores all render data
     * separate files, one file per node in the octree.
     */
    void constructOctreeFromFolder(const Task::ProgressCallback& progressCallback);

    /**
     * Checks all defined filter ranges and \returns true if any of the corresponding
     * <code>filterValues</code> are outside of the defined range.
     * \returns false if value should be inserted into Octree.
     * \param filterValues are all read filter values in binary file.
     */
    bool checkAllFilters(const std::vector<float>& filterValues);

    /**
     * \returns true if star should be filtered away and false if all filters passed.
     * \param range contains ]min, max[ and \param filterValue corresponding value in
     * star. Star is filtered either if min = max = filterValue or if filterValue < min
     * (when min != 0.0) or filterValue > max (when max != 0.0).
     */
    bool filterStar(const glm::vec2& range, float filterValue, float normValue = 0.f);

    std::string _inFileOrFolderPath;
    std::string _outFileOrFolderPath;
    int _maxDist = 0;
    int _maxStarsPerNode = 0;
    bool _singleFileInput = false;

    std::shared_ptr<OctreeManager> _octreeManager;
    std::shared_ptr<OctreeManager> _indexOctreeManager;

    // Filter params
    glm::vec2 _posX = glm::vec2(0.f);
    bool _filterPosX = false;
    glm::vec2 _posY = glm::vec2(0.f);
    bool _filterPosY = false;
    glm::vec2 _posZ = glm::vec2(0.f);
    bool _filterPosZ = false;
    glm::vec2 _gMag = glm::vec2(0.f);
    bool _filterGMag = false;
    glm::vec2 _bpRp = glm::vec2(0.f);
    bool _filterBpRp = false;
    glm::vec2 _velX = glm::vec2(0.f);
    bool _filterVelX = false;
    glm::vec2 _velY = glm::vec2(0.f);
    bool _filterVelY = false;
    glm::vec2 _velZ = glm::vec2(0.f);
    bool _filterVelZ = false;
    glm::vec2 _bpMag = glm::vec2(0.f);
    bool _filterBpMag = false;
    glm::vec2 _rpMag = glm::vec2(0.f);
    bool _filterRpMag = false;
    glm::vec2 _bpG = glm::vec2(0.f);
    bool _filterBpG = false;
    glm::vec2 _gRp = glm::vec2(0.f);
    bool _filterGRp = false;
    glm::vec2 _ra = glm::vec2(0.f);
    bool _filterRa = false;
    glm::vec2 _raError = glm::vec2(0.f);
    bool _filterRaError = false;
    glm::vec2 _dec = glm::vec2(0.f);
    bool _filterDec = false;
    glm::vec2 _decError = glm::vec2(0.f);
    bool _filterDecError = false;
    glm::vec2 _parallax = glm::vec2(0.f);
    bool _filterParallax = false;
    glm::vec2 _parallaxError = glm::vec2(0.f);
    bool _filterParallaxError = false;
    glm::vec2 _pmra = glm::vec2(0.f);
    bool _filterPmra = false;
    glm::vec2 _pmraError = glm::vec2(0.f);
    bool _filterPmraError = false;
    glm::vec2 _pmdec = glm::vec2(0.f);
    bool _filterPmdec = false;
    glm::vec2 _pmdecError = glm::vec2(0.f);
    bool _filterPmdecError = false;
    glm::vec2 _rv = glm::vec2(0.f);
    bool _filterRv = false;
    glm::vec2 _rvError = glm::vec2(0.f);
    bool _filterRvError = false;
};

} // namespace openspace

#endif // __OPENSPACE_MODULE_GAIA___CONSTRUCTOCTREETASK___H__