#include <stdio.h>
#include <sys/time.h>
#include <unistd.h>
#include <pthread.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>

#include "lvgl/lvgl.h"

#define SDL_MAIN_HANDLED
#include <SDL2/SDL.h>


#define SDL_HOR_RES 800
#define SDL_VER_RES 480

#define DISP_BUF_SIZE (128 * 1024)

#define UNUSED(p) (void)((p))

static const char *getenv_default(const char *name, const char *dflt);


void _log_cb(lv_log_level_t level, const char *buf) {
  UNUSED(level);
  
  printf("%s", buf);
  fflush(stdout);
}

static const char *getenv_default(const char *name, const char *dflt) {
 return getenv(name) ? : dflt;
}

#if LV_USE_LINUX_FBDEV
  static void lv_linux_disp_init(void) {
    const char *device = getenv_default("LV_LINUX_FBDEV_DEVICE", "/dev/fb0");
    lv_display_t *disp = lv_linux_fbdev_create();

    lv_linux_fbdev_set_file(disp, device);
} 
#elif LV_USE_LINUX_DRM
  static void lv_linux_disp_init(void) {
    const char *device = getenv_default("LV_LINUX_DRM_CARD", "/dev/dri/card0");
    lv_display_t *disp = lv_linux_drm_create();

    lv_linux_drm_set_file(disp, device, -1);
} 
#elif LV_USE_SDL
  static void lv_linux_disp_init(void) {
    const int width  = atoi(getenv("LV_SDL_VIDEO_WIDTH") ?: "800");
    const int height = atoi(getenv("LV_SDL_VIDEO_HEIGHT") ?: "480");

    lv_display_t *disp = lv_sdl_window_create(width, height);
   // lv_sdl_ linux_fbdev_set_file(display, "/dev/fb0");

    lv_group_t *g = lv_group_create();
    lv_group_set_default(g);
    
    lv_indev_t *mouse = lv_sdl_mouse_create();
    lv_indev_set_group(mouse, lv_group_get_default());

    lv_indev_t *mousewheel = lv_sdl_mousewheel_create();
    lv_indev_set_group(mousewheel, lv_group_get_default());

    lv_indev_t *keyboard = lv_sdl_keyboard_create();
    lv_indev_set_group(keyboard, lv_group_get_default());

  }
#else
  #error Unsupported configuration
#endif



void lv_ex_draw_rect(void) {
    /* Maak een scherm */
    lv_obj_t *scr = lv_scr_act();

    /* Maak een rechthoek */
    lv_obj_t *rect = lv_obj_create(scr);
    lv_obj_set_size(rect, 200, 100);           // Stel de grootte in (breedte x hoogte)
    lv_obj_align(rect, LV_ALIGN_CENTER, 0, 0); // Plaats het in het midden van het scherm

    /* Stel de stijl van de rechthoek in (optioneel) */
    lv_obj_set_style_bg_color(rect, lv_color_hex(0xFF0000), LV_PART_MAIN); // Stel de achtergrondkleur in op rood
}

int main(int argc, char *argv[])
{
  UNUSED(argc);
  UNUSED(argv);

  lv_init();
  /* Linux display device init */
  lv_linux_disp_init();

  lv_log_register_print_cb(_log_cb);
  lv_fs_stdio_init();
  

  lv_ex_draw_rect();
  LV_LOG_USER("SDL driver set.");

  /*Handle LitlevGL tasks (tickless mode)*/
  while (1)
  {
    // lv_tick_inc(5);
    lv_task_handler(); 
    lv_timer_handler();
    SDL_Delay(5);
    //    usleep(5000);
  }
  return 0;
}