#pragma once

#include <cstdint>

#include "esp_adc/adc_oneshot.h"
#include "esp_adc/adc_cali.h"
#include "esp_err.h"
#include "result.hpp"

namespace drivers {

class Battery {
  public:
    Battery();
    ~Battery();

    /**
     * Returns the current battery level in millivolts.
     */
    auto Millivolts() -> uint32_t;
  private:
    adc_oneshot_unit_handle_t adc_handle_;
    adc_cali_handle_t adc_calibration_handle_;
};

}  // namespace drivers