const formatTime = 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 formatChatTime = 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].map(formatNumber).join(':')}`
}

const getDateArr = 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, hour, minute, second]
}

const formatNumber = n => {
  n = n.toString()
  return n[1] ? n : `0${n}`
}

const getTimeAgo = stringTime =>{
  var minute = 1000 * 60;
  var hour = minute *60;
  var day = hour *24;
  var week = day * 7;
  var month = day * 30;
  var time1 = new Date().getTime();//当前的时间戳
  var time2 = stringTime*1000;//指定时间的时间戳
  var time = time1 - time2;
  var result = null;
  if(time < 0){
    return '刚刚';
  }else if(time/month >= 1){
    result = formatChatTime(new Date(time2));
  }else if(time/week >= 1){
    result = formatChatTime(new Date(time2));
  }else if(time/day >= 1){
    result = formatChatTime(new Date(time2));
  }else if(time/hour >= 1){
    result = parseInt(time/hour) + "小时前";
  }else if(time/minute >= 1){
    result = parseInt(time/minute) + "分钟前";
  }else {
    result = "刚刚";
  }
  return result;
}

module.exports = {
  formatTime,
  getDateArr,
  formatNumber,
  getTimeAgo,
}