Initial import

packages/domain/src/telegram-pairing.ts

@@ -0,0 +1,13 @@
+import { createHash } from "node:crypto";
+
+export function normalizePairingCode(code: string): string {
+  return code.trim().toUpperCase();
+}
+
+export function hashPairingCode(code: string): string {
+  return createHash("sha256").update(normalizePairingCode(code)).digest("hex");
+}
+
+export function isPairingExpired(expiresAt: Date, now: Date = new Date()): boolean {
+  return expiresAt.getTime() <= now.getTime();
+}