#pragma once

#include <assert.h>
#include "core.h"
#include "render_types.h"

static float cube_vertices[] = {
  // positions          // normals           // texture coords
  -0.5f, -0.5f, -0.5f, 0.0f,  0.0f,  -1.0f, 0.0f,  0.0f,  0.5f,  -0.5f, -0.5f, 0.0f,
  0.0f,  -1.0f, 1.0f,  0.0f,  0.5f,  0.5f,  -0.5f, 0.0f,  0.0f,  -1.0f, 1.0f,  1.0f,
  0.5f,  0.5f,  -0.5f, 0.0f,  0.0f,  -1.0f, 1.0f,  1.0f,  -0.5f, 0.5f,  -0.5f, 0.0f,
  0.0f,  -1.0f, 0.0f,  1.0f,  -0.5f, -0.5f, -0.5f, 0.0f,  0.0f,  -1.0f, 0.0f,  0.0f,

  -0.5f, -0.5f, 0.5f,  0.0f,  0.0f,  1.0f,  0.0f,  0.0f,  0.5f,  -0.5f, 0.5f,  0.0f,
  0.0f,  1.0f,  1.0f,  0.0f,  0.5f,  0.5f,  0.5f,  0.0f,  0.0f,  1.0f,  1.0f,  1.0f,
  0.5f,  0.5f,  0.5f,  0.0f,  0.0f,  1.0f,  1.0f,  1.0f,  -0.5f, 0.5f,  0.5f,  0.0f,
  0.0f,  1.0f,  0.0f,  1.0f,  -0.5f, -0.5f, 0.5f,  0.0f,  0.0f,  1.0f,  0.0f,  0.0f,

  -0.5f, 0.5f,  0.5f,  -1.0f, 0.0f,  0.0f,  1.0f,  0.0f,  -0.5f, 0.5f,  -0.5f, -1.0f,
  0.0f,  0.0f,  1.0f,  1.0f,  -0.5f, -0.5f, -0.5f, -1.0f, 0.0f,  0.0f,  0.0f,  1.0f,
  -0.5f, -0.5f, -0.5f, -1.0f, 0.0f,  0.0f,  0.0f,  1.0f,  -0.5f, -0.5f, 0.5f,  -1.0f,
  0.0f,  0.0f,  0.0f,  0.0f,  -0.5f, 0.5f,  0.5f,  -1.0f, 0.0f,  0.0f,  1.0f,  0.0f,

  0.5f,  0.5f,  0.5f,  1.0f,  0.0f,  0.0f,  1.0f,  0.0f,  0.5f,  0.5f,  -0.5f, 1.0f,
  0.0f,  0.0f,  1.0f,  1.0f,  0.5f,  -0.5f, -0.5f, 1.0f,  0.0f,  0.0f,  0.0f,  1.0f,
  0.5f,  -0.5f, -0.5f, 1.0f,  0.0f,  0.0f,  0.0f,  1.0f,  0.5f,  -0.5f, 0.5f,  1.0f,
  0.0f,  0.0f,  0.0f,  0.0f,  0.5f,  0.5f,  0.5f,  1.0f,  0.0f,  0.0f,  1.0f,  0.0f,

  -0.5f, -0.5f, -0.5f, 0.0f,  -1.0f, 0.0f,  0.0f,  1.0f,  0.5f,  -0.5f, -0.5f, 0.0f,
  -1.0f, 0.0f,  1.0f,  1.0f,  0.5f,  -0.5f, 0.5f,  0.0f,  -1.0f, 0.0f,  1.0f,  0.0f,
  0.5f,  -0.5f, 0.5f,  0.0f,  -1.0f, 0.0f,  1.0f,  0.0f,  -0.5f, -0.5f, 0.5f,  0.0f,
  -1.0f, 0.0f,  0.0f,  0.0f,  -0.5f, -0.5f, -0.5f, 0.0f,  -1.0f, 0.0f,  0.0f,  1.0f,

  -0.5f, 0.5f,  -0.5f, 0.0f,  1.0f,  0.0f,  0.0f,  1.0f,  0.5f,  0.5f,  -0.5f, 0.0f,
  1.0f,  0.0f,  1.0f,  1.0f,  0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,  1.0f,  0.0f,
  0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,  1.0f,  0.0f,  -0.5f, 0.5f,  0.5f,  0.0f,
  1.0f,  0.0f,  0.0f,  0.0f,  -0.5f, 0.5f,  -0.5f, 0.0f,  1.0f,  0.0f,  0.0f,  1.0f
};

static mesh prim_cube_mesh_create() {
  mesh cube = { 0 };
  cube.vertices = vertex_darray_new(36);

  for (int i = 0; i < 36; i++) {
    vertex vert = { .position = vec3_create(cube_vertices[(i * 8) + 0], cube_vertices[(i * 8) + 1],
                                            cube_vertices[(i * 8) + 2]),
                    .normal = vec3_create(cube_vertices[(i * 8) + 3], cube_vertices[(i * 8) + 4],
                                          cube_vertices[(i * 8) + 5]),
                    .uv = (vec2){ .x = cube_vertices[(i * 8) + 6],
                                  .y = cube_vertices[(i * 8) + 7] } };
    vertex_darray_push(cube.vertices, vert);
  }
  return cube;
}

/** @brief create a new model with the shape of a cube */
static model_handle prim_cube_new(core* core) {
     model model = { 0 };
  mesh cube = prim_cube_mesh_create();

  mesh_darray_push(model.meshes, cube);
  assert(mesh_darray_len(model.meshes) == 1);

  u32 index = (u32)model_darray_len(core->models);
  model_darray_push_copy(core->models, &model);
  return (model_handle){ .raw = index };
}