import { bytesToHex } from '@noble/ciphers/utils';
import { nip19 } from '@nostr/tools';
import { bech32m } from '@scure/base';

export function readInvite(invite: `${string}1${string}`) {
  const decoded = bech32m.decode(invite, false);
  if (decoded.prefix !== 'eveinvite') return false;
  const hexBytes = bech32m.fromWords(decoded.words);
  const npub = nip19.npubEncode(bytesToHex(hexBytes.slice(0, 32)));
  const inviteCode = bytesToHex(hexBytes.slice(32));
  return { npub, invite: inviteCode };
}