#pragma once

#include "esphome/core/component.h"
#include "esphome/components/sensor/sensor.h"
#include "esphome/components/i2c/i2c.h"

namespace esphome {
namespace ee895 {

/// This class implements support for the ee895 of temperature i2c sensors.
class EE895Component : public PollingComponent, public i2c::I2CDevice {
 public:
  void set_co2_sensor(sensor::Sensor *co2) { co2_sensor_ = co2; }
  void set_temperature_sensor(sensor::Sensor *temperature_sensor) { temperature_sensor_ = temperature_sensor; }
  void set_pressure_sensor(sensor::Sensor *pressure_sensor) { pressure_sensor_ = pressure_sensor; }

  void setup() override;
  void dump_config() override;
  void update() override;

 protected:
  void write_command_(uint16_t addr, uint16_t reg_cnt);
  float read_float_();
  uint16_t calc_crc16_(const uint8_t buf[], uint8_t len);
  sensor::Sensor *co2_sensor_;
  sensor::Sensor *temperature_sensor_;
  sensor::Sensor *pressure_sensor_;

  enum ErrorCode { NONE = 0, COMMUNICATION_FAILED, CRC_CHECK_FAILED } error_code_{NONE};
};

}  // namespace ee895
}  // namespace esphome
