/**
 * 时间戳转时间字符串
 * @param timestamp
 * @returns {string}
 */
function timestampToTime(timestamp) {
  timestamp = timestamp.toString().length === 10 ? timestamp * 1000 : timestamp;
  let date = new Date(timestamp); //时间戳为10位需*1000，时间戳为13位的话不需乘1000
  let Y = date.getFullYear() + '-';
  let M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '-';
  let D = date.getDate() + ' ';
  let h = date.getHours() + ':';
  let m = date.getMinutes() + ':';
  let s = date.getSeconds();
  return Y+M+D+h+m+s;
}

/**
 * 时间字符串转时间戳
 * @param timeStr
 * @param isSecond
 * @returns {number}
 */
function timeStrToTimeStamp(timeStr,isSecond){
  let date = new Date(timeStr);
  if(isSecond){
    return date.getTime()/1000;
  }else{
    return date.getTime();
  }
}

/**
 * 时间戳转时间字符串
 * @param time 时间戳
 * @param format 格式 yyyy-MM-dd HH:mm:ss
 * @returns {*} 格式化后的时间字符串
 */
function timeFormat(time, format) {
  let t = new Date(time);
  let tf = function(i) {
    return (i < 10 ? '0' : '') + i
  };
  return format.replace(/yyyy|MM|dd|HH|mm|ss/g, function(a) {
    switch (a) {
      case 'yyyy':
        return tf(t.getFullYear());
        break;
      case 'MM':
        return tf(t.getMonth() + 1);
        break;
      case 'mm':
        return tf(t.getMinutes());
        break;
      case 'dd':
        return tf(t.getDate());
        break;
      case 'HH':
        return tf(t.getHours());
        break;
      case 'ss':
        return tf(t.getSeconds());
        break;
    }
  })
}

function getUnixTimeStamp(){
  return Math.round(new Date().getTime()/1000);
}

module.exports = {
  timestampToTime,
  timeStrToTimeStamp,
  timeFormat,
  getUnixTimeStamp
}