export function formatDate(
  dateStr?: string | null,
  format: string = 'YYYY-MM-DD',
  fallback: string = '-',
): string {
  if (!dateStr) return fallback

  const date = new Date(dateStr)
  if (isNaN(date.getTime())) return fallback

  const map: Record<string, string | number> = {
    YYYY: date.getFullYear(),
    MM: String(date.getMonth() + 1).padStart(2, '0'),
    DD: String(date.getDate()).padStart(2, '0'),
    HH: String(date.getHours()).padStart(2, '0'),
    mm: String(date.getMinutes()).padStart(2, '0'),
    ss: String(date.getSeconds()).padStart(2, '0'),
  }

  return format.replace(/YYYY|MM|DD|HH|mm|ss/g, matched => String(map[matched]))
}