moved to a separate files

src/utils/getSignature.js

@@ -0,0 +1,20 @@
+import crypto from "crypto";
+import { yandexHmacKey } from "../config/config.js";
+
+export default async function getSignature(body) {
+  // Create a key from the HMAC secret
+  const utf8Encoder = new TextEncoder("utf-8");
+  const key = await crypto.subtle.importKey(
+    "raw",
+    utf8Encoder.encode(yandexHmacKey),
+    { name: "HMAC", hash: { name: "SHA-256" } },
+    false,
+    ["sign", "verify"],
+  );
+  // Sign the body with the key
+  const signature = await crypto.subtle.sign("HMAC", key, body);
+  // Convert the signature to a hex string
+  return Array.from(new Uint8Array(signature), (x) =>
+    x.toString(16).padStart(2, "0"),
+  ).join("");
+}

src/utils/getUUID.js

@@ -0,0 +1,11 @@
+import crypto from "crypto";
+
+export default function getUUID(isLower) {
+  const uuid = ([1e7] + 1e3 + 4e3 + 8e3 + 1e11).replace(/[018]/g, (c) =>
+    (
+      c ^
+      (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (c / 4)))
+    ).toString(16),
+  );
+  return isLower ? uuid : uuid.toUpperCase();
+}