Add a way to get diagnostics for issue reports.

src/utils/ha/device-registry.ts

@@ -0,0 +1,22 @@
+import { HomeAssistant } from 'custom-card-helpers';
+import { z } from 'zod';
+import { homeAssistantWSRequest } from '.';
+
+const deviceSchema = z.object({
+  model: z.string().nullable(),
+  config_entries: z.string().array(),
+  manufacturer: z.string().nullable(),
+})
+export const deviceListSchema = deviceSchema.array();
+export type DeviceList = z.infer<typeof deviceListSchema>;
+
+/**
+ * Get a list of all entities from the entity registry. May throw.
+ * @param hass The Home Assistant object.
+ * @returns An entity list object.
+ */
+export const getAllDevices = async (hass: HomeAssistant): Promise<DeviceList> => {
+  return await homeAssistantWSRequest<DeviceList>(hass, deviceListSchema, {
+    type: 'config/device_registry/list',
+  });
+};