#pragma once

#include "DXBuffer.h"
#include "Mat4.h"
#include "Vec2.h"

namespace Framework
{
    class NativeWindow;
    class Image;
    class Texture;
    class Cam3D;
    class Model3DList;
    class Model3DData;

    enum GraphicApiType;
    enum TextureDirection;

    struct DiffuseLight
    {
        Vec3<float> direction;
        Vec3<float> color;
    };

    struct PointLight
    {
        Vec3<float> position;
        Vec3<float> color;
        float radius;
    };

    class GraphicsApi : public virtual ReferenceCounter
    {
    protected:
        GraphicApiType typ;
        NativeWindow* fenster;
        Vec2<int> backBufferSize;
        Model3DList* modelList;
        int nextModelId;
        ReadWriteLock rwLock;

        bool fullScreen;

    public:
        DLLEXPORT GraphicsApi(GraphicApiType typ);
        DLLEXPORT virtual ~GraphicsApi();
        DLLEXPORT virtual void initialize(
            NativeWindow* fenster, Vec2<int> backBufferSize, bool fullScreen);
        DLLEXPORT virtual void beginFrame(
            bool fill2D = 0, bool fill3D = 0, int fillColor = 0);
        DLLEXPORT virtual void renderKamera(Cam3D* zKamera);
        DLLEXPORT virtual void renderKamera(Cam3D* zKamera, Texture* zTarget);
        DLLEXPORT virtual void presentFrame() = 0;
        DLLEXPORT virtual Texture* createOrGetTexture(const char* name,
            Image* b = 0,
            TextureDirection dir = (TextureDirection)0);
        DLLEXPORT GraphicApiType getTyp() const;
        DLLEXPORT Vec2<int> getBackBufferSize() const;
        DLLEXPORT bool isFullScreen() const;
        DLLEXPORT virtual Image* zUIRenderImage() const = 0;
        //! returns the specified model without increased reference counter
        DLLEXPORT virtual Model3DData* zModel(const char* name);
        //! returns the specified model with increased reference counter
        DLLEXPORT virtual Model3DData* getModel(const char* name);
        //! creates a new empty Model3DData object if the model does not exist
        //! yet
        DLLEXPORT virtual Model3DData* createModel(const char* name);
        //! check if a model exists
        DLLEXPORT virtual bool hasModel(const char* name);
        //! creates a StructuredBuffer that is stored in the GPU memory and can
        //! be used as a shader resource
        //! \param eSize the size of one element of the buffer in bytes
        DLLEXPORT virtual DXBuffer* createStructuredBuffer(int eSize) = 0;
        DLLEXPORT virtual bool renderGuiBefore3D() const;
    };
} // namespace Framework