/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2022                                                               *
 *                                                                                       *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
 * software and associated documentation files (the "Software"), to deal in the Software *
 * without restriction, including without limitation the rights to use, copy, modify,    *
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
 * permit persons to whom the Software is furnished to do so, subject to the following   *
 * conditions:                                                                           *
 *                                                                                       *
 * The above copyright notice and this permission notice shall be included in all copies *
 * or substantial portions of the Software.                                              *
 *                                                                                       *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
 ****************************************************************************************/

#ifndef __OPENSPACE_MODULE_SKYBROWSER___SCREENSPACESKYBROWSER___H__
#define __OPENSPACE_MODULE_SKYBROWSER___SCREENSPACESKYBROWSER___H__

#include <openspace/rendering/screenspacerenderable.h>
#include <modules/skybrowser/include/wwtcommunicator.h>

#include <openspace/documentation/documentation.h>
#include <openspace/properties/scalar/doubleproperty.h>
#include <openspace/properties/scalar/floatproperty.h>
#include <openspace/properties/vector/vec2property.h>

namespace openspace {

class ScreenSpaceSkyBrowser : public ScreenSpaceRenderable, public WwtCommunicator
{
public:
    constexpr static const double FovThreshold = 0.001;
        
    explicit ScreenSpaceSkyBrowser(const ghoul::Dictionary& dictionary);
    ~ScreenSpaceSkyBrowser();

    bool initializeGL() override;
    bool deinitializeGL() override;
    glm::mat4 scaleMatrix() override;
    void render() override;
    void update() override;

    // Animation
    bool isAnimated() const;
    void startFovAnimation(float fov);
    void incrementallyAnimateToFov(float deltaTime);

    // Getters
    float opacity() const;
    glm::vec2 size() const;

    // Setters
    void setVerticalFovWithScroll(float scroll);
    void setOpacity(float opacity);
    void setScreenSpaceSize(const glm::vec2& newSize);
    void updateScreenSpaceSize();

    glm::dvec2 fineTuneVector(glm::dvec2 drag);
    void setIdInBrowser();

    void updateTextureResolution();

private:
    properties::DoubleProperty _animationSpeed;
    properties::FloatProperty _textureQuality;

    void bindTexture() override;

    // Flags
    bool _isSyncedWithWwt = false;
    bool _isFovAnimated = false;
    bool _textureDimensionsIsDirty = false;
    bool _sizeIsDirty = false;

    // Animation of fieldOfView
    float _endVfov = 0.f;
    glm::vec2 _size = glm::vec2(0.5f);
};
} // namespace openspace

#endif // __OPENSPACE_MODULE_SKYBROWSER___SCREENSPACESKYBROWSER___H__