function TimeFormatting(dateTimeStamp) {
  var result;
  var minute = 1000 * 60;
  var hour = minute * 60;
  var day = hour * 24;
  var halfamonth = day * 15;
  var month = day * 30;
  var now = new Date();  //当前时间
  // console.log('now', now);

  var digit = String(dateTimeStamp).length;
  if (digit == '10') {
    var curTime = new Date(parseInt(dateTimeStamp) * 1000); //后端返回的是秒数      过去时间
  } else {
    var curTime = new Date(parseInt(dateTimeStamp)); //后端返回的是秒数      过去时间
  }


  // console.log('curTime',curTime);


  var _year = now.getFullYear();   // 年
  var _month = now.getMonth() + 1;  //月
  var _day = now.getDate();   //日

  var shitime = _year + '-' + _month + '-' + _day + ' 23:59:59';
  // console.log(shitime);

  var time_start = new Date(shitime.replace(/-/g, '/'));

  time_start.getTime();

  var diffValue = time_start.getTime() - curTime;

  // 过去时间和现在时间对比  相差多少天
  var CutOffDays = parseInt(diffValue / day);


  var Now_hour = now.getHours();      //当前 小时数
  var Now_mm = now.getMinutes();   //当前 分  
  var Current_hour = curTime.getHours();       //过去 小时数
  var Current_mm = curTime.getMinutes();     //过去 分  

  var Differhour = Now_hour - Current_hour     //过去时间和现在时间相差小时
  var DifferMinute = Now_mm - Current_mm     //过去时间和现在时间相差分钟

  // console.log(Differhour)
  // console.log(DifferMinute)


  var timestr = '';
  if (Current_hour < 11) {
    timestr = " 早上 ";
  }
  else if (Current_hour < 13) {
    timestr = " 中午 ";
  }
  else if (Current_hour < 17) {
    timestr = " 下午 ";
  }
  else if (Current_hour < 19) {
    timestr = " 晚上 ";
  }
  else {
    timestr = " 晚上 ";
  }

  // 日
  var currentTimeDay = curTime.getDate();

  //历史记录年月日
  var SpecificDate = curTime.getFullYear() + '年' + (curTime.getMonth() + 1) + '月' + currentTimeDay + '日 ';
  //  console.log(SpecificDate);

  //历史记录时间
  var Historicaltime = curTime.getHours() + ':' + (curTime.getMinutes() >= 10 ? curTime.getMinutes() : ('0' + curTime.getMinutes()));
  // console.log(Historicaltime);

  var weekTime = (new Date(curTime)).getDay();    //星期   工作日
  // console.log(weekTime);
  var week = "";


  // console.log(CutOffDays, '2222');

  if (CutOffDays > 7) {   // 消息超过 7天    显示日期

    result = SpecificDate + timestr + Historicaltime;

  } else if (CutOffDays < 1) {    // 消息小于 1天   
   
      result = timestr + Historicaltime;

  } else if (CutOffDays >= 1 && CutOffDays < 2) {   // 消息大于 1天   并且   小于 2天  显示昨天  

    result = '昨天' + timestr + Historicaltime;

  } else if (CutOffDays >= 2 && CutOffDays <= 7) {  // 消息大于 2天   并且   小于 7天  显示星期
    // console.log(weekTime);
    switch (weekTime) {
      case 0:
        week = '星期日'
        break;
      case 1:
        week = '星期一'
        break;
      case 2:
        week = '星期二'
        break;
      case 3:
        week = '星期三'
        break;
      case 4:
        week = '星期四'
        break;
      case 5:
        week = '星期五'
        break;
      case 6:
        week = '星期六'
        break;
    }

    result = week + timestr + Historicaltime;

  }




  // console.log(result);
  return result;
}


//最下面一定要加上你自定义的方法（作用：将模块接口暴露出来），否则会报错：util.trim is not a function;
module.exports = {
  TimeFormatting: TimeFormatting,
}