// 通用格式化工具
export function fmtDate(s) {
  if (!s) return ''
  const d = new Date(s)
  if (isNaN(d.getTime())) return s
  const pad = (n) => String(n).padStart(2, '0')
  return d.getFullYear() + '-' + pad(d.getMonth() + 1) + '-' + pad(d.getDate())
}

export function fmtDateTime(s) {
  if (!s) return ''
  const d = new Date(s)
  if (isNaN(d.getTime())) return s
  const pad = (n) => String(n).padStart(2, '0')
  return (
    d.getFullYear() + '-' + pad(d.getMonth() + 1) + '-' + pad(d.getDate()) +
    ' ' + pad(d.getHours()) + ':' + pad(d.getMinutes())
  )
}