import moment from 'moment'

export const formatTime = (date: 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(':')
  )
}

/// 格式化日期
export function formatDate(date: Date) {
  date = new Date(date);
  return `${date.getFullYear()}-${date.getMonth() + 1}-${date.getDate()}`;
}

/**
 * 日期格式化
 * @param value 
 * @param format 
 * @returns 
 */
export function formatDateString(value?: string, format = 'YYYY-MM-DD HH:mm:ss') {
  if (value) {
      return moment(value).format(format)
  }
  return handleNoneValue()
}

/**
 * 处理空值的情况
 * @param value 值
 * @param suffix 后缀名
 * @returns 
 */
export function handleNoneValue<T>(value?: T, suffix = '') {
  if (value == null || String(value) === '') {
      return '--'
  }
  return value + suffix
}

const formatNumber = (n: number) => {
  const s = n.toString()
  return s[1] ? s : '0' + s
}

/// 判断字符串是否为空
export const isnullstr = (str: string) => {
  return str == '' ? '--' : str
}

/// 截取两位小数位
export const getDecimalNum = (number: string) => {
  let amount = number
  let num = null
  // 小数点后最多只能输入两位
  num = number.replace(new RegExp('^(\\d+\\.\\d{2}).+'), '$1')

  // 小数点开头得话，让前面加个0   eg: 0.xx
  const startPoint = /^\./g
  if (startPoint.test(num)) { num = amount.replace(startPoint, '0.') }

  // 若没有小数点，前面输入多个0，去掉0取整
  // if（num有值 && 没有小数点 && 不等于'0'）
  if (num && !num.includes('.') && num !== '0') { num = +num }
  // 若出现多个小数点，则替换为1个
  const morePoint = /\.+(\d*|\.+)\./g

  if (morePoint.test(String(num))) {
    num = amount
      .replace(/\.{2,}/g, ".")
      .replace(".", "$#$")
      .replace(/\./g, "")
      .replace("$#$", ".")
  }
  return num
}