import type { AuthUser } from '../../../packages/shared/src/contracts/auth';

export function resolveActivePublicUserCode(user: AuthUser | null | undefined) {
  if (user?.publicUserCode?.trim()) {
    return user.publicUserCode.trim();
  }

  const raw =
    user?.id.replace(/[^a-zA-Z0-9]/gu, '').toUpperCase() || '00000000';
  return `SY-${raw.slice(-8).padStart(8, '0')}`;
}

export function resolveActiveUserAvatarLabel(
  user: AuthUser | null | undefined,
) {
  return (user?.displayName || '叙').slice(0, 1).toUpperCase();
}