export const formatTime = (date: Date) => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return (
    [year, month, day].map(formatNumber).join('/') +
    ' ' +
    [hour, minute, second].map(formatNumber).join(':')
  )
}

const formatNumber = (n: number) => {
  const s = n.toString()
  return s[1] ? s : '0' + s
}

export const getMonthDay = () => {
  const now = new Date();
    const year = now.getFullYear();
    const month = now.getMonth(); // 0~11，0代表1月

    // 当月第一天
    const firstDay = new Date(year, month, 1);
    // 当月最后一天：下个月的第0天
    const lastDay = new Date(year, month + 1, 0);

    // 格式化日期为 YYYY-MM-DD
    const format = (date) => {
      const y = date.getFullYear();
      const m = (date.getMonth() + 1).toString().padStart(2, '0');
      const d = date.getDate().toString().padStart(2, '0');
      return `${y}-${m}-${d}`;
    };

    const firstStr = format(firstDay); // 例如 2026-06-01
    const lastStr = format(lastDay);   // 例如 2026-06-30
    return [firstStr,lastStr]
}