export async function formatDate(timestamp: string) {
  const date = new Date(timestamp)
  const year = date.getFullYear()
  const month = String(date.getMonth() + 1).padStart(2, '0')
  const day = String(date.getDate()).padStart(2, '0')
  return `${year}-${month}-${day}`
}

export function formatFileSize(bytes: number = 0, decimals = 2) {
  if (bytes === 0)
    return '0 B'

  const k = 1024 // 1 KB = 1024 B
  const sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
  const i = Math.floor(Math.log(bytes) / Math.log(k)) // 计算单位索引

  // 转换为合适的单位并保留指定小数位数
  return `${Number.parseFloat((bytes / k ** i).toFixed(decimals))} ${sizes[i]}`
}

export function isAmount(str: any) {
  const amountRegex = /^\d+(\.\d{1,2})?$/
  return amountRegex.test(str)
}
/**
 * 金额转换千分位
 * @param amount 金额数值
 * @returns 格式化后的金额字符串
 */
export function formatAmount(amount: number | undefined): string {
  if (amount === undefined || amount === null)
    return '-'
  return amount.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',')
}

// function isAmount(str) {
//   // 正则表达式

// }