#ifndef SDLPP_HPP_SCENE
#define SDLPP_HPP_SCENE

#include <algorithm>
#include <memory>
#include <mutex>
#include <unordered_set>

#include "sdlpp_common.hpp"
#include "sdlpp_renderer.hpp"
#include "sdlpp_renderobject.hpp"

namespace SDLPP {
class Scene {
public:
    Scene( std::shared_ptr< Renderer > &r );
    void addObject( const std::shared_ptr< RenderObject > &obj );
    void setZIndex( const std::shared_ptr< RenderObject > &obj, int index );
    void moveDownZ( const std::shared_ptr< RenderObject > &obj );
    void moveUpZ( const std::shared_ptr< RenderObject > &obj );
    void moveZ( const std::shared_ptr< RenderObject > &obj, int addition );
    // TODO addCollision
    std::shared_ptr< RenderObject > getObject( int index );
    std::vector< std::shared_ptr< RenderObject > > getObjects();
    std::vector< std::shared_ptr< RenderObject > >
    getObjects( const std::unordered_set< int > &objectIDs );
    void movement();
    std::vector< std::shared_ptr< RenderObject > >
    getCollisions( RenderObject &r );
    std::vector< std::shared_ptr< RenderObject > >
    getCollisions( RenderObject &r,
                   const std::unordered_set< int > &objectIDs );
    void renderScene( bool clear_renderer = true );
    void presentScene();
    void setBackground( std::shared_ptr< Texture > bg );
    void setBackground( const std::string &img_path );
    void updateSizeAndPosition();
    void moveEverything( double x, double y );
    const std::shared_ptr< RenderObject > &leftmost();
    const std::shared_ptr< RenderObject > &rightmost();
    std::pair< int, int > getDimensions() const;
    int getWidth() const;
    int getHeight() const;
    Renderer &getRenderer();
    std::shared_ptr< Renderer > getRendererShared();
    void setPrevTicks( int ticks );
    void saveScene();
    void resetScene();

private:
    void checkKilled();

    std::vector< std::shared_ptr< RenderObject > > render_objects;
    std::vector< std::shared_ptr< RenderObject > > collision_objects;
    std::vector< std::shared_ptr< RenderObject > > saved_render_objects;
    std::vector< std::shared_ptr< RenderObject > > saved_collision_objects;
    std::shared_ptr< Renderer > renderer;
    std::shared_ptr< Texture > background;
    int prev_ticks = 0;
    std::shared_ptr< RenderObject > leftmost_obj;
    std::shared_ptr< RenderObject > rightmost_obj;
    uint64_t max_object_id = 0;
    std::mutex render_mutex;
};
} // end of namespace SDLPP
#endif