function isEmpty(val) {
  return typeof val === 'undefined' || val === '' || val === null
}

function formatMTime(time) {
  if (isEmpty(time)) {
    return ''
  }
  var minute = 60 * 1000
  var just = 3 * 60 * 1000
  var onehour = 60 * 60 * 1000
  var oneday = 24 * 60 * 60 * 1000
  time = time.replace(getRegExp('/\s/g', 'g'), '')
  var datetime = getDate(time.trim())
  var gap = getDate().getTime() - datetime.getTime()
  
  if (gap > oneday) {
    return time.substring(0, 10)
  } else if (gap > onehour) {
    return parseInt(gap / onehour) + '小时前'
  } else if (gap > onehour) {
    return parseInt(gap / onehour) + '小时前'
  } else if (gap > just) {
    return parseInt(gap / minute) + '分钟前'
  } else {
    return '刚刚更新'
  }
}

module.exports = {
  formatMTime: formatMTime
}