Add simple listing of sonos devices and basic Dockefile for running it

src/sonos.ts

@@ -0,0 +1,48 @@
+import { SonosManager } from "@svrooij/sonos";
+
+import logger from "./logger";
+
+type Device = {
+  name: string;
+  group: string;
+  ip: string;
+  port: number;
+};
+
+interface Sonos
+ {
+  devices: () => Device[];
+}
+
+class RealSonos implements Sonos {
+  manager: SonosManager;
+
+  constructor(manager: SonosManager) {
+    this.manager = manager;
+  }
+
+  devices = (): Device[] => {
+    const devices = this.manager.Devices.map((d) => ({
+      name: d.Name,
+      group: d.GroupName || "",
+      ip: d.Host,
+      port: d.Port,
+    }));
+    logger.debug({ devices })
+    return devices;
+  }
+}
+
+const SonosDisabled: Sonos = {
+  devices: () => [],
+};
+
+export default function (): Promise<Sonos> {
+  const manager = new SonosManager();
+  return manager
+    .InitializeWithDiscovery(10)
+    .then((it) => (it ? new RealSonos(manager) : SonosDisabled))
+    .catch((_) => {
+      return SonosDisabled;
+    });
+}