/** 金额类字段默认最大小数位数 */
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export const AMOUNT_DECIMAL_SCALE = 6
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/** 金额（元）默认展示小数位数 */
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export const MONEY_DECIMAL_SCALE = 2
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/**
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* 格式化数字：最多保留 scale 位小数，并去除末尾多余的 0
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*/
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export function formatDecimal(value, scale = AMOUNT_DECIMAL_SCALE, fallback = '0') {
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if (value === null || value === undefined || value === '') {
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return fallback
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}
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const num = Number(value)
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if (Number.isNaN(num)) {
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return fallback
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}
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return parseFloat(num.toFixed(scale)).toString()
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}
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/** 带货币符号的金额展示 */
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export function formatCurrency(value, scale = AMOUNT_DECIMAL_SCALE) {
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return `¥${formatDecimal(value, scale)}`
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}
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/** el-table-column formatter */
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export function tableAmountFormatter(row, column, cellValue) {
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return formatDecimal(cellValue)
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}
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/** el-table-column formatter：金额（元）列，最多保留 2 位小数 */
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export function moneyAmountFormatter(row, column, cellValue) {
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return formatDecimal(cellValue, MONEY_DECIMAL_SCALE)
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}
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/** 计算后保留指定位小数 */
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export function roundAmount(value, scale = AMOUNT_DECIMAL_SCALE) {
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if (value === null || value === undefined || value === '') {
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return 0
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}
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const num = Number(value)
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if (Number.isNaN(num)) {
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return 0
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}
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return parseFloat(num.toFixed(scale))
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}
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/** 构建 summarizeTable 金额列格式配置 */
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export function buildAmountSummaryFormat(
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fields,
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extraFormat = {},
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scale = AMOUNT_DECIMAL_SCALE
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) {
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const format = { ...extraFormat }
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fields.forEach(field => {
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format[field] = { decimalPlaces: scale }
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})
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return format
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}
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