jschoubben
aca237b2e0
home-assistant: states/call-service/config tools, emits state.changed bounded to actuator/contact domains (not attribute ticks), overridable via a watch allowlist. influxdb: health/buckets/flux-query tools — tools-only, since a time-series DB has no lifecycle event to emit here. Typecheck; manifests parse.
79 lines
2.7 KiB
TypeScript
79 lines
2.7 KiB
TypeScript
// The Home Assistant API client — home-assistant's own code, living in the module (novox/hq
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// ADR 0044). Both this module's tools and its events entrypoint import it, and nothing outside
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// home-assistant does. Talks to the HA REST API (/api) with a long-lived access token.
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export interface HAEntityState {
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entity_id: string;
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state: string;
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attributes: Record<string, unknown>;
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last_changed?: string;
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last_updated?: string;
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}
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export interface HAConfig {
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location_name?: string;
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version?: string;
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components?: string[];
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time_zone?: string;
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state?: string;
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}
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export class HomeAssistantClient {
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readonly baseUrl: string;
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constructor(
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url: string,
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private readonly token: string,
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) {
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this.baseUrl = url.replace(/\/$/, "");
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}
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/**
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* Build from the module's resolved environment. The URL defaults to the local server (HA runs on
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* the node); the token is the long-lived access token minted in HA's profile — required, since
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* every API call is Bearer-authenticated and there is nowhere to discover it from.
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*/
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static fromEnv(env: NodeJS.ProcessEnv = process.env): HomeAssistantClient {
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const url = env.MESH_HOMEASSISTANT_URL ?? `http://127.0.0.1:${env.HOMEASSISTANT_PORT ?? "8123"}`;
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const token = env.MESH_HOMEASSISTANT_TOKEN;
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if (!token) throw new Error("no Home Assistant token — set MESH_HOMEASSISTANT_TOKEN");
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return new HomeAssistantClient(url, token);
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}
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private async request(path: string, init?: RequestInit): Promise<unknown> {
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const res = await fetch(`${this.baseUrl}${path}`, {
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...init,
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headers: {
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Authorization: `Bearer ${this.token}`,
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"Content-Type": "application/json",
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Accept: "application/json",
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...(init?.headers ?? {}),
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},
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});
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if (!res.ok) throw new Error(`Home Assistant API ${path}: ${res.status} ${await res.text()}`);
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return res.json();
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}
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async getConfig(): Promise<HAConfig> {
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return (await this.request("/api/config")) as HAConfig;
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}
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/** All entity states, or one entity when an id is given. */
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async getStates(): Promise<HAEntityState[]> {
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return (await this.request("/api/states")) as HAEntityState[];
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}
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async getState(entityId: string): Promise<HAEntityState> {
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return (await this.request(`/api/states/${encodeURIComponent(entityId)}`)) as HAEntityState;
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}
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/** Call a service (e.g. switch.turn_on) — how "turn the light on" reaches HA. Returns the states
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* the call changed. */
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async callService(domain: string, service: string, data: Record<string, unknown> = {}): Promise<HAEntityState[]> {
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return (await this.request(`/api/services/${encodeURIComponent(domain)}/${encodeURIComponent(service)}`, {
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method: "POST",
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body: JSON.stringify(data),
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})) as HAEntityState[];
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}
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}
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