export function getFileExtension(filename) {
  var tempArr = filename.split('.')
  var ext
  if (tempArr.length === 1 || (tempArr[0] === '' && tempArr.length === 2)) {
    ext = ''
  } else {
    ext = tempArr.pop().toLowerCase() // get the extension and make it lower-case
  }
  return ext
}

export function isCardNo(card) {
  // 身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X
  var reg_18 = /^[1-9]\d{5}(18|19|([23]\d))\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/
  var reg_15 = /^[1-9]\d{5}\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}$/

  return reg_18.test(card) || reg_15.test(card)
}

export function jsGetAge(strBirthday, splitstr) {
  // debugger
  var returnAge
  var strBirthdayArr = strBirthday.split(splitstr)
  var birthYear = strBirthdayArr[0]
  var birthMonth = strBirthdayArr[1]
  var birthDay = strBirthdayArr[2]
  var d = new Date()
  var nowYear = d.getFullYear()
  var nowMonth = d.getMonth() + 1
  var nowDay = d.getDate()
  if (nowYear == birthYear) {
    returnAge = 0 // 同年 则为0岁
  } else {
    var ageDiff = nowYear - birthYear // 年之差
    if (ageDiff > 0) {
      if (nowMonth == birthMonth) {
        var dayDiff = nowDay - birthDay // 日之差
        if (dayDiff < 0) {
          returnAge = ageDiff - 1
        } else {
          returnAge = ageDiff
        }
      } else {
        var monthDiff = nowMonth - birthMonth // 月之差
        if (monthDiff < 0) {
          returnAge = ageDiff - 1
        } else {
          returnAge = ageDiff
        }
      }
    } else {
      returnAge = -1 // 返回-1 表示出生日期输入错误 晚于今天
    }
  }

  return returnAge // 返回周岁年龄
}

export function isPositiveInteger(s) {
  // 是否为正整数
  var re = /^[0-9]+$/
  return re.test(s)
}

export function isPositiveNumber(s) {
  var re = /^\d+(\.\d+)?$/
  return re.test(s)
}

export function dialysisAge(firstDialysisDate) {
  var dialysisAge
  var startDate = firstDialysisDate.split('-')
  var startYear = startDate[0]
  var startMonth = startDate[1]
  var startDay = startDate[2]
  var d = new Date()
  var nowYear = d.getFullYear()
  var nowMonth = d.getMonth() + 1
  var nowDay = d.getDate()

  var diffYear = nowYear - startYear
  var diffMonth = nowMonth - startMonth
  var diffDay = nowDay - startDay
  if (diffYear < 0) {
    dialysisAge = ''
  } else if (diffYear == 0) {
    if (diffMonth < 0) {
      dialysisAge = ''
    } else if (diffMonth == 0 && diffDay < 0) {
      dialysisAge = ''
    } else {
      if (diffDay < 0) {
        diffMonth -= 1
      }
      dialysisAge = diffMonth + '个月'
    }
  } else {
    if (diffDay < 0) {
      diffMonth -= 1
    }
    if (diffMonth < 0) {
      diffYear -= 1
      diffMonth += 12
    }
    if (diffYear > 0 && diffMonth > 0) {
      dialysisAge = diffYear + '年零' + diffMonth + '个月'
    } else if (diffYear > 0) {
      dialysisAge = diffYear + '年'
    } else {
      dialysisAge = diffMonth + '个月'
    }
  }

  return dialysisAge // 返回周岁年龄
}

export function uParseTime(time, cFormat) {
  if (time === 0) {
    return ''
  }
 
  if (arguments.length === 0) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if (('' + time).length !== 13) time = parseInt(time) * 1000
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
    let value = formatObj[key]
    if (key === 'a') {
      return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
    }
    if (result.length > 0 && value < 10) {
      value = '0' + value
    }
    return value || 0
  })
  return time_str
}

export function calculateAnticoagulantZL(type, shouji, shichang, weichi) {
  console.log(type)
  console.log(shouji)
  console.log(shichang)
  console.log(weichi)

  var t = 0.5
  if (type == 1) {
    t = 0.5
  } else if (type == 2) {
    t = 1
  } else {
    return 0
  }
  shouji = parseFloat(shouji)
  shichang = parseFloat(shichang)
  weichi = parseFloat(weichi)
  if (isNaN(shouji) || isNaN(shichang) || isNaN(weichi)) {
    return 0
  }
  console.log((shouji + (shichang - t) * weichi).toFixed(1))
  return (shouji + (shichang - t) * weichi).toFixed(1)
}