#pragma once

#include <cstdint>
#include "Camera.h"
#include "DataTypes.h"

struct SDL_Window;
struct SDL_Surface;

namespace dae
{
	class Scene;

	class Renderer final
	{
	public:
		Renderer(SDL_Window* pWindow);
		~Renderer() = default;

		Renderer(const Renderer&) = delete;
		Renderer(Renderer&&) noexcept = delete;
		Renderer& operator=(const Renderer&) = delete;
		Renderer& operator=(Renderer&&) noexcept = delete;

		void Render(Scene* pScene) const;

        void RenderPixel(Scene* pScene, uint32_t pixelIndex, float fov, float aspectRatio, const Matrix cameraToWorld, const Vector3& cameraPosition) const;

		bool SaveBufferToImage() const;

        void CycleLightingMode();
        void ToggleShadows() { m_ShadowsEnabled = !m_ShadowsEnabled; }

	private:
        enum class LightingMode {
            ObservedArea,
            Radiance,
            BRDF,
            Combined
        };
        LightingMode m_CurrentLightingMode{ LightingMode::Combined };
        bool m_ShadowsEnabled{ true };



		SDL_Window* m_pWindow{};

		SDL_Surface* m_pBuffer{};
		uint32_t* m_pBufferPixels{};


		int m_Width{};
		int m_Height{};

        float m_FOV{};

        Camera m_Camera{};

        ColorRGB Raytrace(const Ray& viewRay, Scene* pScene) const;

        std::vector<uint16_t> m_xvalues;

    };
}