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111 lines
3.1 KiB
111 lines
3.1 KiB
// @ts-nocheck
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import { isString } from "../isString";
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import { isNumber } from "../isNumber";
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/**
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* 将金额转换为中文大写形式
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* @param {number | string} amount - 需要转换的金额，可以是数字或字符串
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* @returns {string} 转换后的中文大写金额
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*/
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function capitalizedAmount(amount : number) : string
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function capitalizedAmount(amount : string) : string
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function capitalizedAmount(amount : any | null) : string {
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try {
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let _amountStr :string;
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let _amountNum :number = 0;
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// 如果输入是字符串，先将其转换为数字，并去除逗号
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if (typeof amount == 'string') {
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_amountNum = parseFloat((amount as string).replace(/,/g, ''));
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}
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if(isNumber(amount)) {
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_amountNum = amount as number
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}
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// 判断输入是否为有效的金额 || isNaN(amount)
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if (amount == null) throw new Error('不是有效的金额！');
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let result = '';
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// 处理负数情况
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if (_amountNum < 0) {
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result = '欠';
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_amountNum = Math.abs(_amountNum);
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}
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// 金额不能超过千亿以上
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if (_amountNum >= 10e11) throw new Error('计算金额过大！');
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// 保留两位小数并转换为字符串
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_amountStr = _amountNum.toFixed(2);
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// 定义数字、单位和小数单位的映射
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const digits = ['零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'];
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const units = ['', '拾', '佰', '仟'];
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const bigUnits = ['', '万', '亿'];
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const decimalUnits = ['角', '分'];
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// 分离整数部分和小数部分
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const amountArray = _amountStr.split('.');
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let integerPart = amountArray[0]; // string| number[]
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const decimalPart = amountArray[1];
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// 处理整数部分
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if (integerPart != '0') {
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let _integerPart = integerPart.split('').map((item):number => parseInt(item));
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// 将整数部分按四位一级进行分组
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const levels = _integerPart.reverse().reduce((prev:string[][], item, index):string[][] => {
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// const level = prev?.[0]?.length < 4 ? prev[0] : [];
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const level = prev.length > 0 && prev[0].length < 4 ? prev[0]: []
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const value = item == 0 ? digits[item] : digits[item] + units[index % 4];
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level.unshift(value);
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if (level.length == 1) {
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prev.unshift(level);
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} else {
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prev[0] = level;
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}
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return prev;
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}, [] as string[][]);
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// 将分组后的整数部分转换为中文大写形式
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result += levels.reduce((prev, item, index):string => {
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let _level = bigUnits[levels.length - index - 1];
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let _item = item.join('').replace(/(零)\1+/g, '$1');
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if (_item == '零') {
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_level = '';
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_item = '';
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} else if (_item.endsWith('零')) {
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_item = _item.slice(0, _item.length - 1);
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}
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return prev + _item + _level;
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}, '');
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} else {
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result += '零';
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}
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// 添加元
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result += '元';
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// 处理小数部分
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if (decimalPart != '00') {
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if (result == '零元') result = '';
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for (let i = 0; i < decimalPart.length; i++) {
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const digit = parseInt(decimalPart.charAt(i));
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if (digit != 0) {
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result += digits[digit] + decimalUnits[i];
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}
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}
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} else {
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result += '整';
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}
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return result;
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} catch (error : Error) {
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return error.message;
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}
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};
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