fix(ui): различать ошибки и пустую историю WireGuard

shared/api/wireguard.ts

@@ -1,3 +1,4 @@
+import { z } from "zod"
 import { wgIfaceDtoSchema, wgImportResponseSchema, wgExportResponseSchema } from "@mmapp/contracts/wireguard"
 import type {
   WgCreateInterface,
@@ -126,3 +127,18 @@ export async function exportWireGuard(
   }
   return parsed.data
 }
+
+const wireguardRevisionsSchema = z.object({ revisions: z.array(z.object({
+  id: z.string().min(1), serverId: z.string().min(1), section: z.literal("wireguard"),
+  source: z.enum(["apply", "rollback", "observed", "copy"]), fingerprint: z.string(),
+  createdAt: z.string().refine(value => Number.isFinite(Date.parse(value))),
+  note: z.string().nullable(), itemCount: z.number().int().nonnegative(),
+})) })
+
+export async function listWireGuardRevisions(baseUrl: string, serverId: string) {
+  const result = wireguardRevisionsSchema.safeParse(await requestJson<unknown>(baseUrl, "/api/wireguard/revisions?serverId=" + encodeURIComponent(serverId)))
+  if (!result.success || result.data.revisions.some(revision => revision.serverId !== serverId)) {
+    throw new Error("Некорректный ответ истории WireGuard")
+  }
+  return result.data.revisions
+}