//金额转大写数字

const intToChinese = money => {

  //汉字的数字

  let cnNums = new Array('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖');

  //基本单位

  let cnIntRadice = new Array('', '拾', '佰', '仟');

  //对应整数部分扩展单位

  let cnIntUnits = new Array('', '万', '亿', '兆');

  //对应小数部分单位

  let cnDecUnits = new Array('角', '分', '毫', '厘');

  //整数金额时后面跟的字符

  let cnInteger = '整';

  //整型完以后的单位

  let cnIntLast = '元';

  //最大处理的数字

  let maxNum = 999999999999999.9999;

  //金额整数部分

  let integerNum;

  //金额小数部分

  let decimalNum;

  //输出的中文金额字符串

  let chineseStr = '';

  //分离金额后用的数组，预定义

  let parts;

  if (money == '') { return ''; }

  money = parseFloat(money);

  if (money >= maxNum) {

    //超出最大处理数字

    return '';

  }

  if (money == 0) {

    chineseStr = cnNums[0] + cnIntLast + cnInteger;

    return chineseStr;

  }

  //转换为字符串

  money = money.toString();

  if (money.indexOf('.') == -1) {

    integerNum = money;

    decimalNum = '';

  } else {

    parts = money.split('.');

    integerNum = parts[0];

    decimalNum = parts[1].substr(0, 4);

  }

  //获取整型部分转换

  if (parseInt(integerNum, 10) > 0) {

    let zeroCount = 0;

    let IntLen = integerNum.length;

    for (let i = 0; i < IntLen; i++) {

      let n = integerNum.substr(i, 1);

      let p = IntLen - i - 1;

      let q = p / 4;

      let m = p % 4;

      if (n == '0') {

        zeroCount++;

      } else {

        if (zeroCount > 0) {

          chineseStr += cnNums[0];

        }

        //归零

        zeroCount = 0;

        chineseStr += cnNums[parseInt(n)] + cnIntRadice[m];

      }

      if (m == 0 && zeroCount < 4) {

        chineseStr += cnIntUnits[q];

      }

    }

    chineseStr += cnIntLast;

  }

  //小数部分

  if (decimalNum != '') {

    let decLen = decimalNum.length;

    for (let i = 0; i < decLen; i++) {

      let n = decimalNum.substr(i, 1);

      if (n != '0') {

        chineseStr += cnNums[Number(n)] + cnDecUnits[i];

      }

    }

  }

  if (chineseStr == '') {

    chineseStr += cnNums[0] + cnIntLast + cnInteger;

  } else if (decimalNum == '') {

    chineseStr += cnInteger;

  }

  return chineseStr;

};

export default intToChinese;