#pragma once
#include <string>
#include <vector>
#include <memory>
#include <GL/glew.h>
#include <functional>
#include "glm/gtc/type_ptr.hpp"

#include "Light.h"
#include "SceneContext.h"
#include "Loader.h"
#include "Texture.h"

class Shader
{
public:
	Shader() {};
	Shader(const std::string vtx_name, const std::string frag_name);
	~Shader();
			
	Material mat;

	void enable();
	void disable();

	
public:
	void setUniforms(SceneContext ctx);	

	void addUniform(const std::string name, glm::vec3 data)
	{
		_program.use(); glUniform3fv(_program.addUniform(name), 1, glm::value_ptr(data)); 
	}

	void addUniform(const std::string name, int data)
	{
		_program.use(); glUniform1i(_program.addUniform(name), data);
	}

	void addUniform(const std::string name, float data)
	{
		_program.use(); glUniform1fv(_program.addUniform(name), 1, &data); 
	}

	void addUniform(const std::string name, glm::mat3x3 &data)
	{
		_program.use(); glUniformMatrix3fv(_program.addUniform(name), 1, GL_FALSE, glm::value_ptr(data));
	}

	void addUniform(const std::string name, glm::mat4x4 &data)
	{
		_program.use(); glUniformMatrix4fv(_program.addUniform(name), 1, GL_FALSE, glm::value_ptr(data));
	}	
	
	ShaderProgram _program;
};