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;
}

//格式化时间
export function formatDate(timestamp) {
  const nowTime = new Date();
  const date = new Date(timestamp * 1000);
  const year = date.getFullYear();
  const month = date.getMonth() + 1; // 月份从0开始,所以需要加1
  const day = date.getDate();
  const hours = date.getHours();
  const minutes = date.getMinutes();
  if (nowTime.getTime() - 24 * 60 * 60 * 1000 > date.getTime()) {
    return `${month}/${day}`;
  } else {
    return `${hours}:${minutes > 9 ? minutes : "0" + minutes}`;
  }
}

// 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);
  };
}
// 跳转页面
export function goToPage(link) {
  let linkArr = link.split("?");
  const params = linkArr[1]?.split("&");

  if (!params) return linkArr[0];
  if (linkArr[0].includes("/")) {
    const path = linkArr[0].replace(/^\/+|\/+$/g, "");
    const pathNames = path.split("/").filter((it) => it != "");
    return [pathNames[0], { screen: pathNames[1] }];
  }
  const query = params
    .map((it) => ({ [it.split("=")[0]]: it.split("=")[1] }))
    .reduce((acc, cur) => ({ ...acc, ...cur }), {});
  return [linkArr[0], query];
}