import BigNumber from "bignumber.js";

export default {
	methods: {
        // 将数字金额转换为大写金额
		smallToBig() {
			var money = new BigNumber(this.model.didgrp.cbs.nom1.amt).toFormat(2).replace(/,/g, "").toString();
			var cnNums = new Array("零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"); //汉字的数字
			var cnIntRadice = new Array("", "拾", "佰", "仟"); //基本单位
			var cnIntUnits = new Array("", "万", "亿", "兆"); //对应整数部分扩展单位
			var cnDecUnits = new Array("角", "分", "毫", "厘"); //对应小数部分单位
			var cnInteger = "整"; //整数金额时后面跟的字符
			var cnIntLast = "元"; //整数完以后的单位
			var integerNum; //金额整数部分
			var decimalNum; //金额小数部分
			//输出的中文金额字符串
			var chineseStr = "";
			var parts; //分离金额后用的数组，预定义
			if (money == "") {
				this.model.ditp.amt = "";
				return;
			}

			if (new BigNumber(money) == 0) {
				chineseStr = cnNums[0] + cnIntLast + cnInteger;
				this.model.ditp.amt = "人民币" + chineseStr;
				return;
			}
			//转换为字符串
			integerNum = money.substr(0, money.length - 3);
			decimalNum = money.substr(money.length - 2);
			//获取整型部分转换
			if (parseInt(integerNum, 10) > 0) {
				var zeroCount = 0;
				var IntLen = integerNum.length;
				for (var i = 0; i < IntLen; i++) {
					var n = integerNum.substr(i, 1);
					var p = IntLen - i - 1;
					var q = p / 4;
					var 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 != "") {
				var decLen = decimalNum.length;
				for (var i = 0; i < decLen; i++) {
					var n = decimalNum.substr(i, 1);
					if (n != "0") {
						chineseStr += cnNums[Number(n)] + cnDecUnits[i];
					}
				}
			}
			if (chineseStr == "") {
				chineseStr += cnNums[0] + cnIntLast + cnInteger;
			} else if (decimalNum == "" || /^0*$/.test(decimalNum)) {
				chineseStr += cnInteger;
			}
			this.model.ditp.amt = "人民币" + chineseStr;
		},
    }
}