#ifndef DHT22_H
#define DHT22_H

#include "DHT_U.h"
#include "humidityRelative.h"
#include "mqtt.h"

class DHT22Sensor {

  int pin;

  DHT_Unified dht;

  unsigned long last = 0UL;

  double temperature = NAN;

  double relative = NAN;

  double absolute = NAN;

public:

  const String name;

  unsigned long intervalMs;

  explicit DHT22Sensor(String name, const int pin, const unsigned long intervalMs = 5000) : pin(pin), dht(pin, DHT22), name(std::move(name)), intervalMs(intervalMs) {
    //
  }

  void setup() {
    dht.begin();
  }

  void loop() {
    const auto now = max(1UL, millis());
    if (now - last >= intervalMs) {
      sensors_event_t event;

      dht.temperature().getEvent(&event);
      temperature = event.temperature;
      if (isnan(temperature)) {
        absolute = NAN;
        Log.error("Error reading temperature!");
      } else {
        mqttPublishValue(name + "/temperature", temperature, "TEMPERATURE_C");
      }

      dht.humidity().getEvent(&event);
      relative = event.relative_humidity;
      if (isnan(relative)) {
        absolute = NAN;
        Log.error("Error reading humidity!");
      } else {
        mqttPublishValue(name + "/humidity/relative", relative, "HUMIDITY_RELATIVE_PERCENT");
        if (!isnan(temperature)) {
          absolute = calculateHumidityAbsolute(temperature, relative);
          mqttPublishValue(name + "/humidity/absolute", absolute, "HUMIDITY_ABSOLUTE_GM3");
        }
      }

      last = now;
    }
  }

  [[nodiscard]] double getTemperature() const {
    return temperature;
  }

  [[nodiscard]] double getRelative() const {
    return relative;
  }

  [[nodiscard]] double getAbsolute() const {
    return absolute;
  }

};

#endif