#include "rendering.h"

#include <glad.h>

#include "utils.h"

bool wayc_image_init(texture_t* texture, image_type_e type,
                     image_format_e format, u32 width, u32 height) {
  bool success = false;
  glGenTextures(1, texture);
  wayc_defer_cond(glDeleteTextures(1, texture), success, true);

  glBindTexture(type, *texture);
  switch (type) {
    case IMAGE_TYPE_2D:
      glTexStorage2D(type, 1, format, width, height);
      break;
    default:
      return success;
  }

  glBindTexture(type, 0);

  success = true;
  return success;
}

bool wayc_image_upload(texture_t texture, ivec2 offset, u32 width, u32 height,
                       image_type_e type, image_format_e format,
                       image_data_type_e data_type, const u8* data) {
  glBindTexture(type, texture);
  switch (type) {
    case IMAGE_TYPE_2D:
      glTexSubImage2D(type, 0, offset[0], offset[1], width, height, format,
                      data_type, data);
      break;
    default:
      return false;
  }

  return true;
}

void wayc_image_use(texture_t texture, image_type_e type, u32 slot) {
  glActiveTexture(GL_TEXTURE0 + slot);
  glBindTexture(type, texture);
}

void wayc_image_deinit(texture_t* texture) { glDeleteTextures(1, texture); }

bool wayc_sampler_init(sampler_t* sampler, sample_filter_e filter,
                       sample_wrap_e wrap) {
  glGenSamplers(1, sampler);
  if (*sampler == 0) return false;

  glSamplerParameteri(*sampler, GL_TEXTURE_MIN_FILTER, filter);
  glSamplerParameteri(*sampler, GL_TEXTURE_MAG_FILTER, filter);
  glSamplerParameteri(*sampler, GL_TEXTURE_WRAP_S, wrap);
  glSamplerParameteri(*sampler, GL_TEXTURE_WRAP_T, wrap);

  return true;
}

void wayc_sampler_use(sampler_t sampler, u32 slot) {
  glActiveTexture(GL_TEXTURE0 + slot);
  glBindSampler(slot, sampler);
}

void wayc_sampler_deinit(sampler_t* sampler) { glDeleteSamplers(1, sampler); }

bool wayc_atlas_init(atlas_t* atlas, image_format_e format, u32 width,
                     u32 height) {
  return wayc_image_init(atlas, IMAGE_TYPE_2D, format, width, height);
}

void wayc_atlas_deinit(atlas_t* atlas) { wayc_image_deinit(atlas); }