#pragma once

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

namespace esphome {
namespace scd30 {

/// This class implements support for the Sensirion scd30 i2c GAS (VOC and CO2eq) sensors.
class SCD30Component : public Component, public i2c::I2CDevice {
 public:
  void set_co2_sensor(sensor::Sensor *co2) { co2_sensor_ = co2; }
  void set_humidity_sensor(sensor::Sensor *humidity) { humidity_sensor_ = humidity; }
  void set_temperature_sensor(sensor::Sensor *temperature) { temperature_sensor_ = temperature; }
  void set_automatic_self_calibration(bool asc) { enable_asc_ = asc; }
  void set_altitude_compensation(uint16_t altitude) { altitude_compensation_ = altitude; }
  void set_ambient_pressure_compensation(float pressure) {
    ambient_pressure_compensation_ = (uint16_t)(pressure * 1000);
  }
  void set_temperature_offset(float offset) { temperature_offset_ = offset; }
  void set_update_interval(uint16_t interval) { update_interval_ = interval; }

  void setup() override;
  void update();
  void dump_config() override;
  float get_setup_priority() const override { return setup_priority::DATA; }

 protected:
  bool write_command_(uint16_t command);
  bool write_command_(uint16_t command, uint16_t data);
  bool read_data_(uint16_t *data, uint8_t len);
  uint8_t sht_crc_(uint8_t data1, uint8_t data2);
  bool is_data_ready_();

  enum ErrorCode {
    COMMUNICATION_FAILED,
    FIRMWARE_IDENTIFICATION_FAILED,
    MEASUREMENT_INIT_FAILED,
    UNKNOWN
  } error_code_{UNKNOWN};
  bool enable_asc_{true};
  uint16_t altitude_compensation_{0xFFFF};
  uint16_t ambient_pressure_compensation_{0x0000};
  float temperature_offset_{0.0};
  uint16_t update_interval_{0xFFFF};

  sensor::Sensor *co2_sensor_{nullptr};
  sensor::Sensor *humidity_sensor_{nullptr};
  sensor::Sensor *temperature_sensor_{nullptr};
};

}  // namespace scd30
}  // namespace esphome
