#include <lvgl.h>
#include <SPI.h>
#include <TFT_eSPI.h>
#include <Arduino.h>

#include <input/encoder.hpp>

#ifndef SCREEN_WIDTH
#define SCREEN_WIDTH 320
#endif

#ifndef SCREEN_HEIGHT
#define SCREEN_HEIGHT 240
#endif

#define DRAW_BUF_SIZE (SCREEN_WIDTH * SCREEN_HEIGHT / 10 * (LV_COLOR_DEPTH / 8))
namespace Display
{
  uint32_t draw_buf[DRAW_BUF_SIZE / 4];

  uint32_t getTime();
  void handleLvglLogs(lv_log_level_t level, const char *buf);
  void handleUpdateValues(lv_timer_t *timer);
  void handleEnterButton();

  String label_text;
  lv_obj_t *label;
  lv_timer_t *update_values_timer;

  void init()
  {
    lv_init();
    lv_log_register_print_cb(handleLvglLogs);
    lv_tick_set_cb(getTime);

    update_values_timer = lv_timer_create(handleUpdateValues, 5, NULL);
    lv_timer_ready(update_values_timer);

    lv_display_t *display;
    display = lv_tft_espi_create(SCREEN_HEIGHT, SCREEN_WIDTH, draw_buf, sizeof(draw_buf));
    lv_display_set_rotation(display, LV_DISPLAY_ROTATION_90);

    label = lv_label_create(lv_screen_active());
    lv_obj_align(label, LV_ALIGN_CENTER, 0, 0);

    Encoder::onButtonRelease(handleEnterButton);
  }

  void update()
  {
    lv_timer_handler();
  }

  void setLabelText(String text)
  {
    label_text = text;
  }

  void handleLvglLogs(lv_log_level_t level, const char *buf)
  {
    Serial.printf("LVGL: %s\r\n", buf);
  }

  uint32_t getTime()
  {
    return esp_timer_get_time() / 1000;
  }

  void handleUpdateValues(lv_timer_t *timer)
  {
    if (label != NULL && lv_label_get_text(label) != label_text.c_str())
    {
      lv_label_set_text(label, label_text.c_str());
    }
  }

  void handleEnterButton()
  {
    setLabelText("Button pressed.");
  }
}