text: import { RankTypes } from "./config";
  
  export const getCount = (count) => {
    if (count < 0) return;
    if (count < 10000) return count;
    if (Math.floor(count / 10000) < 10000) {
      return Math.floor(count / 1000) / 10 + "万";
    } else {
      return Math.floor(count / 10000000) / 10 + "亿";
    }
  };
  
  // 防抖函数
  export const debounce = (func, delay) => {
    let timer;
    return function (...args) {
      if (timer) {
        clearTimeout(timer);
      }
  
      timer = setTimeout(() => {
        func.apply(this, args);
        clearTimeout(timer);
      }, delay);
    };
  };
  
  // 处理数据，找出第一个没有歌名的排行榜的索引
  export const filterIndex = (rankList) => {
    for (let i = 0; i < rankList.length - 1; i++) {
      if (rankList[i].tracks.length && !rankList[i + 1].tracks.length) {
        return i + 1;
      }
    }
  };
  
  //找出排行榜的编号
  export const filterIdx = (name) => {
    for (var key in RankTypes) {
      if (RankTypes[key] === name) return key;
    }
    return null;
  };
  
  // 处理歌手列表拼接歌手名字
  export const getName = (list) => {
    let str = "";
    list.map((item, index) => {
      str += index === 0 ? item.name : "/" + item.name;
      return item;
    });
    return str;
  };
  
  // 判断一个对象是否为空
  export const isEmptyObject = (obj) => !obj || Object.keys(obj).length === 0;
  
  // 给 css3相关属性增加浏览器前缀，处理浏览器兼容性问题
  let elementStyle = document.createElement("div").style;
  
  let vendor = (() => {
    // 首先通过 transition 属性判断是何种浏览器
    let transformNames = {
      webkit: "webkitTransform",
      Moz: "MozTransform",
      O: "OTransform",
      ms: "msTransform",
      standard: "Transform",
    };
  
    for (let key in transformNames) {
      if (elementStyle[transformNames[key]] != undefined) {
        return key;
      }
    }
    return false;
  })();
  
  export function prefixStyle(style) {
    if (vendor === false) {
      return false;
    }
    if (vendor === "standard") {
      return style;
    }
    return vendor + style.charAt(0).toUpperCase() + style.substr(1);
  }
  
  export const getSongUrl = (id) => {
    return `https://music.163.com/song/media/outer/url?id=${id}.mp3`;
  };
  
  //转换歌曲播放时间
  export const formatPlayTime = (interval) => {
    interval = interval | 0; // |0表示向下取整
    const minute = (interval / 60) | 0;
    const second = (interval % 60).toString().padStart(2, "0");
    return `${minute}:${second}`;
  };
  
  function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min + 1) + min);
  }
  
  // 随机算法
  export function shuffle(arr) {
    let new_arr = [];
    arr.forEach((item) => {
      new_arr.push(item);
    });
    for (let i = 0; i < new_arr.length; i++) {
      let j = getRandomInt(0, i);
      let t = new_arr[j];
      new_arr[i] = new_arr[j];
      new_arr[j] = t;
    }
    return new_arr;
  }
  
  // 找到当前的歌曲索引
  export const findIndex = (song, list) => {
    return list.findIndex(item => {
      return song.id === item.id
    })
  }
  