2025-07-26 21:28:23 +02:00

119 lines
4.6 KiB
TypeScript

import { BaseComponent } from './_base_component';
import { SensorDeviceClass, SensorStateClass } from './_enums';
/**
* Represents an MQTT Sensor component for Home Assistant MQTT Discovery.
*
* This `mqtt` sensor platform uses the MQTT message payload as the sensor value.
* If messages in this `state_topic` are published with the *RETAIN* flag,
* the sensor will receive an instant update with last known value.
* Otherwise, the initial state will be undefined.
*
* For detailed documentation see:
* https://www.home-assistant.io/integrations/sensor.mqtt/
*/
export interface SensorComponent extends BaseComponent {
/**
* Must be `sensor`.
* Only allowed and required in [MQTT auto discovery device messages](https://www.home-assistant.io/integrations/mqtt/#device-discovery-payload).
*/
platform: 'sensor';
/**
* The MQTT topic subscribed to receive sensor values.
* If `device_class`, `state_class`, `unit_of_measurement` or `suggested_display_precision` is set,
* and a numeric value is expected, an empty value `''` will be ignored and will not update the state,
* a `'None'` value will set the sensor to an `unknown` state.
*
* If a `value_template` is used to parse a JSON payload, a `null` value in the JSON
* [will be rendered as](https://www.home-assistant.io/docs/configuration/templating/#using-value-templates-with-mqtt) `'None'`.
*/
state_topic?: string;
/**
* The [type/class](https://www.home-assistant.io/integrations/sensor/#device-class) of the sensor to set the icon in the frontend.
* The `device_class` defaults to `null` (generic sensor).
*/
device_class?: SensorDeviceClass;
/**
* The [state_class](https://developers.home-assistant.io/docs/core/entity/sensor#available-state-classes) of the sensor.
* Defaults to 'measurement'.
*
* Possible values:
* - `measurement` - The state represents a measurement in present time, such as current temperature or humidity.
* - `measurement_angle` - Like `measurement`, but specifically for angles in degrees (°), e.g., wind direction.
* - `total` - Represents a total amount that can both increase and decrease, e.g., a net energy meter.
* - `total_increasing` - A monotonically increasing total that periodically resets to 0, e.g., daily water consumption.
*/
state_class?: SensorStateClass;
/**
* Defines the units of measurement of the sensor, if any.
* The `unit_of_measurement` defaults to `null`.
*/
unit_of_measurement?: string | null;
/**
* The number of decimals which should be used in the sensor's state after rounding.
*/
suggested_display_precision?: number;
/**
* Defines a [template](https://www.home-assistant.io/docs/configuration/templating/#using-value-templates-with-mqtt) to extract the value.
* If the template throws an error, the current state will be used instead.
*/
value_template?: string;
/**
* Defines a [template](https://www.home-assistant.io/docs/configuration/templating/#using-value-templates-with-mqtt) to extract the JSON dictionary from messages received on the `json_attributes_topic`.
*/
json_attributes_template?: string;
/**
* The MQTT topic subscribed to receive a JSON dictionary payload and then set as sensor attributes.
* Implies `force_update` of the current sensor state when a message is received on this topic.
*/
json_attributes_topic?: string;
/**
* Sends update events even if the value hasn't changed.
* Useful if you want to have meaningful value graphs in history.
* Default: false
*/
force_update?: boolean;
/**
* If set, it defines the number of seconds after the sensor's state expires,
* if it's not updated. After expiry, the sensor's state becomes `unavailable`.
* Default the sensor's state never expires.
*/
expire_after?: number;
/**
* List of allowed sensor state value. An empty list is not allowed.
* The sensor's `device_class` must be set to `enum`.
* The `options` option cannot be used together with `state_class` or `unit_of_measurement`.
*/
options?: string[];
/**
* Defines a [template](https://www.home-assistant.io/docs/configuration/templating/#using-value-templates-with-mqtt) to extract the last_reset.
* When `last_reset_value_template` is set, the `state_class` option must be `total`.
* Available variables: `entity_id`. The `entity_id` can be used to reference the entity's attributes.
*/
last_reset_value_template?: string;
/**
* The payload that represents the available state.
* Default: "online"
*/
payload_available?: string;
/**
* The payload that represents the unavailable state.
* Default: "offline"
*/
payload_not_available?: string;
}