src/messages builds Response, StateReport, DeferredResponse, ErrorResponse, ChangeReport and the scene, doorbell and simple events from plain values; messageId and times are parameters, so a test compares whole objects. StateBuilder collects properties checked by the descriptors, AlexaError and AlexaErrors carry the payload fields of an error type. AlexaStatusMessage and AlexaErrorResponse move to src/compat and are written on the builders. On the wire, against 1.5.2: a DeferredResponse has no context key, a ChangeReport has no correlationToken, the namespace of an ErrorResponse follows its type, and a ChangeReport without a changed property is not published: send() resolves "" and the bridge reports an error that names the endpoint. 143 tests pass (108 before). Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
128 lines
6.6 KiB
JavaScript
128 lines
6.6 KiB
JavaScript
import { randomUUID } from "crypto";
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import { changeReport, deferredResponse, response } from "../messages/build.js";
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import { StateBuilder } from "../messages/StateBuilder.js";
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import { AlexaInterfaceType, TemperatureSensorScale } from "./enums.js";
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// The 1.x helpers report every temperature in Celsius, whatever scale the device works in
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function celsius(scale, value) {
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return { value: scale === TemperatureSensorScale.FAHRENHEIT ? (value - 32) * (5 / 9) : value, scale: "CELSIUS" };
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}
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/**
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* A Response, StateReport, DeferredResponse or ChangeReport as 1.x builds it: device.getStatusMessage() or
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* device.getChangeReport(), the add...Prop() calls, send(). The values are not checked.
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*/
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export class AlexaStatusMessage {
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constructor(correlationToken, rootTopic, endpointId, mqttClient, isResponse = false, isDeferred = false, changeCause = null) {
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this.correlationToken = correlationToken;
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this.rootTopic = rootTopic;
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this.endpointId = endpointId;
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this.mqttClient = mqttClient;
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this.isResponse = isResponse;
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this.isDeferred = isDeferred;
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this.changeCause = changeCause;
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// One id for the message, however often toJSON() is called
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this.messageId = randomUUID();
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this.state = new StateBuilder({ target: changeCause ? "change" : "context" });
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}
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addProperty(namespace, name, value, uncertaintyInMilliseconds = 0, instance) {
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this.state.setRaw(namespace, name, value, { instance, uncertaintyInMilliseconds });
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return this;
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}
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/** ChangeReport: the add*Prop calls that follow describe what CHANGED (the default for a change report). */
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changed() {
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this.state.changed();
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return this;
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}
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/** ChangeReport: the add*Prop calls that follow describe the other, unchanged properties (context). */
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unchanged() {
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this.state.unchanged();
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return this;
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}
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/** True for a ChangeReport (Device.getChangeReport). */
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isChangeReport() {
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return this.changeCause !== null;
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}
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/**
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* The message as it will be published (for tests and logging). A DeferredResponse has no context. Throws
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* MessageError for a ChangeReport without a changed property.
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*/
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toJSON() {
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const { endpointId, messageId, correlationToken } = this;
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if (this.changeCause) {
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return changeReport({ endpointId, messageId, cause: this.changeCause, changed: this.state.change, context: this.state.context });
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}
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if (this.isDeferred) {
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return deferredResponse({ endpointId, messageId, correlationToken, estimatedDeferralInSeconds: this.estimatedDeferralInSeconds });
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}
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const name = this.isResponse ? "Response" : "StateReport";
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return response({ name, endpointId, messageId, correlationToken, context: this.state.context });
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}
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addModeControllerProp(instance, value, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.MODE_CONTROLLER, "mode", value, uncertaintyInMs, instance);
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}
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addThermostatModeProp(mode, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.THERMOSTAT_CONTROLLER, "thermostatMode", mode, uncertaintyInMs);
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}
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addEstimatedDeferralTime(seconds) {
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if (this.isDeferred) {
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this.estimatedDeferralInSeconds = seconds;
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}
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else {
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console.warn("[AlexaStatusMessage.ts] Attempted to add estimated deferral time, but message is not marked as DeferredResponse.");
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}
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return this;
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}
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addThermostatControllerProp(name, scale, value, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.THERMOSTAT_CONTROLLER, name, celsius(scale, value), uncertaintyInMs);
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}
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/** Alexa.EndpointHealth connectivity: EndpointHealth.OK / UNREACHABLE (the plain strings "OK" / "UNREACHABLE" are accepted too). */
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addHealthProp(health, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.ENDPOINT_HEALTH, "connectivity", { value: health }, uncertaintyInMs);
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}
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addPowerControllerProp(power, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.POWER_CONTROLLER, "powerState", power, uncertaintyInMs);
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}
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addTemperatureSensorProp(scale, value, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.TEMPERATURE_SENSOR, "temperature", celsius(scale, value), uncertaintyInMs);
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}
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addBrightnessControllerProp(brightness, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.BRIGHTNESS_CONTROLLER, "brightness", brightness, uncertaintyInMs);
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}
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addColorTemperatureControllerProp(colorTemp, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.COLOR_TEMPERATURE_CONTROLLER, "colorTemperatureInKelvin", colorTemp, uncertaintyInMs);
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}
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addToggleControllerProp(state, instance, uncertaintyInMs = 0) {
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return this.addProperty(AlexaInterfaceType.TOGGLE_CONTROLLER, "toggleState", state, uncertaintyInMs, instance);
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}
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/** A property built by the caller. It goes to the context, also in a ChangeReport after changed(). */
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addContextProp(prop) {
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this.state.add(prop, "context");
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return this;
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}
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/**
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* Publish: a Response/StateReport to <root>/<endpoint>/alexaResponce (sendAsync: deferredResponse), a ChangeReport
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* to <root>/changeReport (Alex2MQTT adds the user's token and posts it to the Alexa event gateway). Resolves with
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* the topic, or "" when nothing was published: the publish failed, or the message is a ChangeReport without a
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* changed property, which Alex2MQTT would drop. The error then goes to the bridge's "error" event (when listened
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* to). Never rejects (1.5.1 did, so an un-caught send() could kill the host).
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*/
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send(sendAsync = false) {
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const topic = this.changeCause
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? `${this.rootTopic}/changeReport`
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: `${this.rootTopic}/${this.endpointId}/${sendAsync ? "deferredResponse" : "alexaResponce"}`; // "alexaResponce" is how Alex2MQTT and Alex2ESP spell the topic
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return new Promise((resolve) => {
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const failed = (err) => {
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if (this.onPublishError)
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this.onPublishError(err); // -> the bridge's "error" event (when somebody listens)
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resolve(""); // 1.5.1 rejected here, and an un-caught send() then killed the host on any broker hiccup
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};
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let payload;
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try {
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payload = JSON.stringify(this.toJSON());
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}
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catch (err) {
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return failed(err);
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}
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this.mqttClient.publish(topic, payload, (err) => (err ? failed(err) : resolve(topic)));
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});
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}
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}
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