#include <cassert>
#include <stb_image.h>
#include <texture.hpp>

Texture::Texture(GLenum type, const char *path) : type(type) {
  glGenTextures(1, &ID);
  glBindTexture(type, ID);

  glTexParameteri(type, GL_TEXTURE_WRAP_S, GL_REPEAT);
  glTexParameteri(type, GL_TEXTURE_WRAP_T, GL_REPEAT);
  glTexParameteri(type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  glTexParameteri(type, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);

  int width, height, nrChannels;
  unsigned char *data;
  stbi_set_flip_vertically_on_load(true);

  data = stbi_load(path, &width, &height, &nrChannels, 0);
  assert(data && "Failed to load image");

  glTexImage2D(type, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE,
               data);
  glGenerateMipmap(type);

  stbi_image_free(data);
};

Texture::~Texture() {glDeleteTextures(1, &ID);}

void Texture::bind(GLenum texture) {
  glActiveTexture(texture);
  glBindTexture(type, ID);
}