/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2021                                                               *
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 * or substantial portions of the Software.                                              *
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 ****************************************************************************************/

#ifndef __OPENSPACE_MODULE_VOLUME___RENDERABLETIMEVARYINGVOLUME___H__
#define __OPENSPACE_MODULE_VOLUME___RENDERABLETIMEVARYINGVOLUME___H__

#include <openspace/rendering/renderable.h>

#include <modules/volume/rawvolumemetadata.h>
#include <openspace/properties/optionproperty.h>
#include <openspace/properties/stringproperty.h>
#include <openspace/properties/scalar/floatproperty.h>
#include <openspace/properties/scalar/intproperty.h>
#include <openspace/properties/triggerproperty.h>
 // #include <modules/volume/rawvolume.h>
// #include <modules/volume/rawvolumemetadata.h>
// #include <modules/volume/rendering/basicvolumeraycaster.h>
// #include <modules/volume/rendering/volumeclipplanes.h>

// #include <openspace/properties/vectorproperty.h>
// #include <openspace/properties/optionproperty.h>
// #include <openspace/properties/stringproperty.h>
// #include <openspace/util/boxgeometry.h>
// #include <openspace/util/histogram.h>
 #include <openspace/rendering/transferfunction.h>

namespace openspace {
    class Histogram;
    struct RenderData;
} // namespace openspace

namespace openspace::volume {

    //class TransferFunction;
    class BasicVolumeRaycaster;
    template <typename T> class RawVolume;
    class VolumeClipPlanes;

    class RenderableTimeVaryingVolume : public Renderable {
    public:
        RenderableTimeVaryingVolume(const ghoul::Dictionary& dictionary);
        ~RenderableTimeVaryingVolume();

        void initializeGL() override;
        void deinitializeGL() override;
        bool isReady() const override;
        void render(const RenderData& data, RendererTasks& tasks) override;
        void update(const UpdateData& data) override;

        static documentation::Documentation Documentation();

    private:
        struct Timestep {
            std::string baseName;
            bool inRam;
            bool onGpu;
            RawVolumeMetadata metadata;
            std::shared_ptr<RawVolume<float>> rawVolume;
            std::shared_ptr<ghoul::opengl::Texture> texture;
            std::shared_ptr<Histogram> histogram;
        };

        Timestep* currentTimestep();
        int timestepIndex(const Timestep* t) const;
        Timestep* timestepFromIndex(int index);
        void jumpToTimestep(int i);

        void loadTimestepMetadata(const std::string& path);

        properties::OptionProperty _gridType;
        std::shared_ptr<VolumeClipPlanes> _clipPlanes;

        properties::FloatProperty _stepSize;
        properties::FloatProperty _opacity;
        properties::FloatProperty _rNormalization;
        properties::FloatProperty _rUpperBound;
        properties::FloatProperty _secondsBefore;
        properties::FloatProperty _secondsAfter;
        properties::StringProperty _sourceDirectory;
        properties::StringProperty _transferFunctionPath;

        properties::TriggerProperty _triggerTimeJump;
        properties::IntProperty _jumpToTimestep;
        properties::IntProperty _currentTimestep;

        std::map<double, Timestep> _volumeTimesteps;
        std::unique_ptr<BasicVolumeRaycaster> _raycaster;
        bool _invertDataAtZ;

        std::shared_ptr<openspace::TransferFunction> _transferFunction;
    };

} // namespace openspace::volume

#endif // __OPENSPACE_MODULE_VOLUME___RENDERABLETIMEVARYINGVOLUME___H__