import { createHash } from 'node:crypto';

export function hashHealthImageBuffer(buffer) {
  if (!Buffer.isBuffer(buffer) || !buffer.length) return null;
  return createHash('sha256').update(buffer).digest('hex');
}

export function hashHealthImageUrl(imageUrl = '') {
  const raw = String(imageUrl ?? '').trim();
  if (!raw) return null;
  return createHash('sha256').update(raw).digest('hex');
}