#ifndef TEXTURE_H
#define TEXTURE_H

#include <string>
#include <glad/glad.h>
#include <iostream>

#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
  
class Texture
{
public:
	unsigned int ID;

	Texture(const char* texturePath)
	{
		glGenTextures(1, &ID);
		glBindTexture(GL_TEXTURE_2D, ID);
		// set the texture wrapping/filtering options (on the currently bound texture object)
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);   
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		// load and generate the texture
		int width, height, nrChannels;
		stbi_set_flip_vertically_on_load(true);
		unsigned char *data = stbi_load(texturePath, &width, &height, &nrChannels, 0);
		if (data)
		{
			GLenum format = GL_RGB;
			if (nrChannels == 1) format = GL_RED;
			else if (nrChannels == 3) format = GL_RGB;
			else if (nrChannels == 4) format = GL_RGBA;
			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, format, GL_UNSIGNED_BYTE, data);
			glGenerateMipmap(GL_TEXTURE_2D);
		}
		else
		{
			std::cout << "Failed to load texture" << std::endl;
		}
		stbi_image_free(data);
	}

	void use()
	{
		glBindTexture(GL_TEXTURE_2D, ID);
	}
};
  
#endif