import { createHash } from 'node:crypto';

export function stableVeraeUserId(username) {
  const n = String(username || '')
    .trim()
    .toLowerCase();
  return `vu_${createHash('sha256').update(n).digest('hex').slice(0, 16)}`;
}

export function bindEmail(email) {
  const veraeUsername = String(email || '')
    .trim()
    .toLowerCase();
  return { veraeUserId: stableVeraeUserId(veraeUsername), veraeUsername, bound: true };
}