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 parseFloat((bytes / Math.pow(k, i)).toFixed(decimals)) + ' ' + sizes[i];
}

export function isAmount(str:any) {
  const amountRegex = /^\d+(\.\d{1,2})?$/;
  return amountRegex.test(str);
}

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