feat(SW-2116): Use refId instead of confirmationNumber

apps/scandic-web/utils/refId.ts

@@ -0,0 +1,21 @@
+import "server-only"
+
+import { decrypt, encrypt } from "./encryption"
+
+export function calculateRefId(confirmationNumber: string, lastName: string) {
+  const encryptedRefId = encrypt(`${confirmationNumber},${lastName}`)
+
+  return encryptedRefId
+}
+
+export function parseRefId(refId: string) {
+  const data = decrypt(refId)
+  const parts = data.split(",")
+  if (parts.length !== 2) {
+    throw new Error("Invalid refId format")
+  }
+  return {
+    confirmationNumber: parts[0],
+    lastName: parts[1],
+  }
+}