/**
 * 一些常用的基础方法
 * unixToDate    将unix时间戳转换为指定格式
 * dateToUnix    将时间转unix时间戳
 * deepClone     对一个对象进行深拷贝
 * formatPrice   货币格式化
 * secrecyMobile 手机号隐私保护
 * randomString  随机生成指定长度的字符串
 */



/**
 * 验证银行卡号
 */
 export function checkBankno(bankno) {
  var lastNum = bankno.substr(bankno.length - 1, 1); //取出最后一位（与luhm进行比较）
  var first15Num = bankno.substr(0, bankno.length - 1); //前15或18位
  var newArr = [];

  for (var i = first15Num.length - 1; i > -1; i--) {
    //前15或18位倒序存进数组
    newArr.push(first15Num.substr(i, 1));
  }

  var arrJiShu = []; //奇数位*2的积 <9
  var arrJiShu2 = []; //奇数位*2的积 >9
  var arrOuShu = []; //偶数位数组
  for (var j = 0; j < newArr.length; j++) {
    if ((j + 1) % 2 == 1) {
      //奇数位
      if (parseInt(newArr[j]) * 2 < 9) arrJiShu.push(parseInt(newArr[j]) * 2);
      else arrJiShu2.push(parseInt(newArr[j]) * 2);
    } //偶数位
    else arrOuShu.push(newArr[j]);
  }

  var jishu_child1 = []; //奇数位*2 >9 的分割之后的数组个位数
  var jishu_child2 = []; //奇数位*2 >9 的分割之后的数组十位数
  for (var h = 0; h < arrJiShu2.length; h++) {
    jishu_child1.push(parseInt(arrJiShu2[h]) % 10);
    jishu_child2.push(parseInt(arrJiShu2[h]) / 10);
  }

  var sumJiShu = 0; //奇数位*2 < 9 的数组之和
  var sumOuShu = 0; //偶数位数组之和
  var sumJiShuChild1 = 0; //奇数位*2 >9 的分割之后的数组个位数之和
  var sumJiShuChild2 = 0; //奇数位*2 >9 的分割之后的数组十位数之和
  var sumTotal = 0;
  for (var m = 0; m < arrJiShu.length; m++) {
    sumJiShu = sumJiShu + parseInt(arrJiShu[m]);
  }
  for (var n = 0; n < arrOuShu.length; n++) {
    sumOuShu = sumOuShu + parseInt(arrOuShu[n]);
  }
  for (var p = 0; p < jishu_child1.length; p++) {
    sumJiShuChild1 = sumJiShuChild1 + parseInt(jishu_child1[p]);
    sumJiShuChild2 = sumJiShuChild2 + parseInt(jishu_child2[p]);
  }
  //计算总和
  sumTotal =
    parseInt(sumJiShu) +
    parseInt(sumOuShu) +
    parseInt(sumJiShuChild1) +
    parseInt(sumJiShuChild2);
  //计算Luhm值
  var k = parseInt(sumTotal) % 10 == 0 ? 10 : parseInt(sumTotal) % 10;
  var luhm = 10 - k;
  if (lastNum == luhm) {
    return true;
  } else {
    return false;
  }
}




/**
 * 将unix时间戳转换为指定格式
 * @param unix   时间戳【秒】
 * @param format 转换格式
 * @returns {*|string}
 */
function unixToDate (unix, format) {
  if (!unix) return unix
  let _format = format || 'yyyy-MM-dd hh:mm:ss'
  const d = new Date(unix)
  const o = {
    'M+': d.getMonth() + 1,
    'd+': d.getDate(),
    'h+': d.getHours(),
    'm+': d.getMinutes(),
    's+': d.getSeconds(),
    'q+': Math.floor((d.getMonth() + 3) / 3),
    S: d.getMilliseconds()
  }
  if (/(y+)/.test(_format)) _format = _format.replace(RegExp.$1, (d.getFullYear() + '').substr(4 - RegExp.$1.length))
  for (const k in o)
    if (new RegExp('(' + k + ')').test(_format)) _format = _format.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) :
      (('00' + o[k]).substr(('' + o[k]).length)))
  return _format
}

/**
 * 将时间转unix时间戳
 * @param date
 * @returns {number} 【秒】
 */
function dateToUnix (date) {
  let newStr = date.replace(/:/g, '-')
  newStr = newStr.replace(/ /g, '-')
  const arr = newStr.split('-')
  const datum = new Date(Date.UTC(
    arr[0],
    arr[1] - 1,
    arr[2],
    arr[3] - 8 || -8,
    arr[4] || 0,
    arr[5] || 0
  ))
  return parseInt(datum.getTime() / 1000)
}

/**
 * 货币格式化
 * @param price
 * @returns {string}
 */
function formatPrice (price) {
  if (typeof price !== 'number') return price
  return String(Number(price).toFixed(2)).replace(/\B(?=(\d{3})+(?!\d))/g, ',')
}

/**
 * 手机号隐私保护
 * 隐藏中间四位数字
 * @param mobile
 * @returns {*}
 */
function secrecyMobile (mobile) {
  mobile = String(mobile)
  if (!/\d{11}/.test(mobile)) {
    return mobile
  }
  return mobile.replace(/(\d{3})(\d{4})(\d{4})/, '$1****$3')
}

/**
 * 随机生成指定长度的字符串
 * @param length
 * @returns {string}
 */
function randomString (length = 32) {
  const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
  const maxPos = chars.length
  let _string = ''
  for (let i = 0; i < length; i++) {
    _string += chars.charAt(Math.floor(Math.random() * maxPos))
  }
  return _string
}

/**
 * 计算传秒数的倒计时【天、时、分、秒】
 * @param seconds
 * @returns {{day : *, hours : *, minutes : *, seconds : *}}
 */

function countTimeDown (seconds) {
  const leftTime = (time) => {
    if (time < 10) time = '0' + time
    return time + ''
  }
  return {
    day: leftTime(parseInt(seconds / 60 / 60 / 24, 10)),
    hours: leftTime(parseInt(seconds / 60 / 60 % 24, 10)),
    minutes: leftTime(parseInt(seconds / 60 % 60, 10)),
    seconds: leftTime(parseInt(seconds % 60, 10))
  }
}

/**
 * 计算当前时间到第二天0点的倒计时[秒]
 * @returns {number}
 */
function theNextDayTime () {
  const nowDate = new Date()
  const time = new Date(nowDate.getFullYear(), nowDate.getMonth(), nowDate.getDate() + 1, 0, 0, 0).getTime() - nowDate.getTime()
  return parseInt(time / 1000)
}
export {
  unixToDate,
  dateToUnix,
  formatPrice,
  secrecyMobile,
  randomString,
  countTimeDown,
  theNextDayTime
}