#pragma once
#include "glm.hpp"
#include "glew.h"
#include <map>
#include <string>
#include "src/Shader_Loader.h"
#include "src/Texture.h"
#include "src/Render_Utils.h"
#include <random>

namespace Core {
	class Engine {
	public:
		static const float skyboxVerticeParameter;
		GLuint textureShader, skyboxShader, bubbleShader, particleShader;
		GLuint submarineTexture, bubbleTexture, terrainTexture, skyboxTexture,
			fishTexture, fangtoothTexture, sharkTexture, secondFishTexture,
			plant1Texture, plant2Texture, plant3Texture, coral1Texture,
			rocktower1Texture, archTexture;

		GLuint skyboxVAO;
		Core::RenderContext submarineContext, bubbleContext, terrainContext, fishContext,
			fangtoothContext, sharkContext, secondFishContext,
			plant1Context, plant2Context, plant3Context, coral1Context, rocktower1Context, archContext;

		std::vector<glm::vec3> bubbleArray[300];
		std::vector<float> objectSize;
		std::vector<float> objectRotation;
		glm::vec3 objectArray[200];
		std::vector<glm::vec3> fishKeyPointsFirst, fishKeyPointsSecond, fishKeyPointsThird, sharkKeyPoints;
		void initShaderPrograms();
		void shutdownShaderPrograms();
		void initRenderContexts();
		void initTextures();
		void initSkybox();
		void initBubbles();
		void generateObjectArray();
		void generateObjectSize();
		void generateObjectRotation();
		void initRandomGenerator(std::default_random_engine gen, std::uniform_int_distribution<> distr);
		void initKeyPoints();

	private:
		GLuint skyboxVBO;
		Shader_Loader shaderLoader;
		static const float cubeVertices[216], skyboxVertices[108];
		std::uniform_int_distribution<> distr;
		std::default_random_engine gen;
		void initCube();
		void generateBubbleArray();
		std::vector<glm::vec3> genBubbleKeyPoints();
		std::vector<glm::vec3> parse(std::string filename);
	};

}