sensor_with_dedup.h

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#pragma once
 
#include "esphome/components/sensor/sensor.h"
#include "esphome/core/helpers.h"
 
#include <cmath>
 
namespace esphome::sensor {
 
#define SUB_SENSOR_WITH_DEDUP(name, dedup_type) \
 protected: \
  sensor::SensorWithDedup<dedup_type> name##_sensor_{}; \
\
 public: \
  void set_##name##_sensor(sensor::Sensor *sensor) { this->name##_sensor_.set_sensor(sensor); }
 
#define LOG_SENSOR_WITH_DEDUP(prefix, type, s) LOG_SENSOR(prefix, type, (s).get_sensor())
 
template<typename T> class SensorWithDedup {
 public:
  void set_sensor(Sensor *sens) {
    this->sens_ = sens;
    this->dedup_ = {};
  }
 
  void publish_state_if_not_dup(T state) {
    if (this->sens_ != nullptr && this->dedup_.next(state)) {
      this->sens_->publish_state(static_cast<float>(state));
    }
  }
 
  void publish_state_unknown() {
    if (this->sens_ != nullptr && this->dedup_.next_unknown()) {
      this->sens_->publish_state(NAN);
    }
  }
 
  bool has_sensor() const { return this->sens_ != nullptr; }
  Sensor *get_sensor() const { return this->sens_; }
 
 protected:
  Sensor *sens_{nullptr};
  Deduplicator<T> dedup_;
};
 
}  // namespace esphome::sensor