export function formatDate(dateStr:string) {
    const date = new Date(dateStr);

  if (isNaN(date)) return 'Invalid Date';

  // 本地时间组件
  const pad = n => String(n).padStart(2, '0');
  const year = date.getFullYear();
  const month = pad(date.getMonth() + 1);
  const day = pad(date.getDate());
  const hours = pad(date.getHours());
  const minutes = pad(date.getMinutes());
  const seconds = pad(date.getSeconds());

  // 获取本地偏移量（分钟），转换为 +08:00 格式
  const timezoneOffset = -date.getTimezoneOffset(); // 反向处理
  const offsetHours = pad(Math.floor(Math.abs(timezoneOffset) / 60));
  const offsetMinutes = pad(Math.abs(timezoneOffset) % 60);
  const offsetSign = timezoneOffset >= 0 ? '+' : '-';

  return `${year}-${month}-${day}T${hours}:${minutes}:${seconds}${offsetSign}${offsetHours}:${offsetMinutes}`;
  }