#pragma once
#include "driver/spi_master.h"
#include "driver/gpio.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_lcd_touch_gt911.h"
#include "display/constants.h"
#include <driver/i2c.h>

class DisplayHandler {
public:
  DisplayHandler(
    EventGroupHandle_t system_event_group
  ) : _system_event_group(system_event_group) { }
  ~DisplayHandler();

  // required to be called by inheriting class after SPI device is created
  // set set_display_ready to false if further initialization is needed before marking display ready
  void init_devices(bool set_display_ready = true);

  void epd_write_cmd(uint8_t cmd);
  void epd_write_data(uint8_t data);

  void epd_write_cmd_with_data(uint8_t cmd, const uint8_t* data, size_t data_len);

private:
  SemaphoreHandle_t _spi_mutex = xSemaphoreCreateMutex();
  spi_device_handle_t _spi = nullptr;
  EventGroupHandle_t _system_event_group = nullptr;
  esp_lcd_panel_io_handle_t _tp_io_handle = nullptr;
  esp_lcd_touch_handle_t _tp_handle = nullptr;

  void _dangerous_epd_write_cmd_without_lock(uint8_t cmd);
  void _dangerous_epd_write_data_without_lock(uint8_t data);

  void _epd_init(void);
  void _touch_init(void);
};