//格式化时间戳
export function formatDeadline(timestamp) {
  const date = new Date(timestamp * 1000); // 时间戳以秒为单位，需要乘以1000转换成毫秒
  const year = date.getFullYear();
  const month = ("0" + (date.getMonth() + 1)).slice(-2);
  const day = ("0" + date.getDate()).slice(-2);
  const hours = ("0" + date.getHours()).slice(-2);
  const minutes = ("0" + date.getMinutes()).slice(-2);
  const seconds = ("0" + date.getSeconds()).slice(-2);

  return `${year}年${month}月${day}日 ${hours}:${minutes}:${seconds}`;
}

// 防抖函数
export function debounce(fn, delay) {
  let timer = null;
  return (fnn) => {
    //清除上一次的延时器
    if (timer) {
      clearTimeout(timer);
      // return;
      // console.log(timer);
    }
    //重新设置新的延时器
    timer = setTimeout(() => {
      //修改this指向问题
      // fn.apply(this,value)
      fn(fnn);
    }, delay);
  };
}

export function utf8Length(str) {
  let length = 0;
  for (let i = 0; i < str.length; i++) {
    const code = str.charCodeAt(i);
    if (code < 0x80) {
      // 0xxxxxxx
      length += 0.5;
    } else if (code < 0x800) {
      // 110xxxxx 10xxxxxx
      length += 2;
    } else if (code < 0x10000) {
      // 1110xxxx 10xxxxxx 10xxxxxx
      length += 1;
    } else if (code <= 0x10ffff) {
      // 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
      length += 4;
    }
  }
  return length;
}