mqtt_sensor.h

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#pragma once

#include "esphome/core/defines.h"

#ifdef USE_MQTT
#ifdef USE_SENSOR

#include "esphome/components/sensor/sensor.h"
#include "mqtt_component.h"

namespace esphome {
namespace mqtt {

class MQTTSensorComponent : public mqtt::MQTTComponent {
 public:
  explicit MQTTSensorComponent(sensor::Sensor *sensor);

  void set_expire_after(uint32_t expire_after);
  void disable_expire_after();

  void send_discovery(JsonObject root, mqtt::SendDiscoveryConfig &config) override;

  // ========== INTERNAL METHODS ==========
  // (In most use cases you won't need these)
  void setup() override;

  void dump_config() override;

  uint32_t get_expire_after() const;

  bool publish_state(float value);
  bool send_initial_state() override;

 protected:
  std::string component_type() const override;
  const EntityBase *get_entity() const override;
  std::string unique_id() override;

  sensor::Sensor *sensor_;
  optional<uint32_t> expire_after_;  // Override the expire after advertised to Home Assistant
};

}  // namespace mqtt
}  // namespace esphome

#endif
#endif  // USE_MQTT