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总部后端，开发计划-任务列表-来源工单支持链接 总部端-开发计划-任务列表-编辑任务-增加“开发中”状态 账单日期修正
77 lines
2.9 KiB
TypeScript
77 lines
2.9 KiB
TypeScript
/** 财务账单日 / 账期一律按中国北京时间（Asia/Shanghai，无夏令时） */
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export const SHANGHAI_TIME_ZONE = 'Asia/Shanghai';
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function pad2(n: number): string {
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return String(n).padStart(2, '0');
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}
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export function shanghaiYmd(d: Date): string {
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return d.toLocaleDateString('sv-SE', { timeZone: SHANGHAI_TIME_ZONE });
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}
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export function parseShanghaiYmd(ymd: string): Date {
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return new Date(`${ymd}T00:00:00+08:00`);
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}
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export function startOfShanghaiDay(d: Date = new Date()): Date {
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return parseShanghaiYmd(shanghaiYmd(d));
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}
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export function addShanghaiDays(d: Date, days: number): Date {
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const [y, m, day] = shanghaiYmd(startOfShanghaiDay(d)).split('-').map(Number);
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const utc = new Date(Date.UTC(y, m - 1, day + days));
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const ymd = `${utc.getUTCFullYear()}-${pad2(utc.getUTCMonth() + 1)}-${pad2(utc.getUTCDate())}`;
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return new Date(`${ymd}T00:00:00+08:00`);
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}
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/** 门店 T+1：核销窗口 [昨日 00:00, 今日 00:00)；出账日 = 今天 */
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export function shanghaiT1DayWindow(anchor = new Date()) {
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const billDate = startOfShanghaiDay(anchor);
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const start = addShanghaiDays(billDate, -1);
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return { start, end: billDate, billDate };
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}
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/**
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* 酒厂 T+N：出账日 = 今天；纳入窗口为「今天 − lagDays」当天完成的订单
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*/
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export function shanghaiLaggedIssueWindow(anchor = new Date(), lagDays: number) {
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const billDate = startOfShanghaiDay(anchor);
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const start = addShanghaiDays(billDate, -lagDays);
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const end = addShanghaiDays(start, 1);
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return { start, end, billDate };
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}
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export function shanghaiMonthRange(year: number, month: number): { start: Date; endExclusive: Date } {
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const start = new Date(`${year}-${pad2(month)}-01T00:00:00+08:00`);
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const endMonth = month === 12 ? 1 : month + 1;
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const endYear = month === 12 ? year + 1 : year;
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const endExclusive = new Date(`${endYear}-${pad2(endMonth)}-01T00:00:00+08:00`);
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return { start, endExclusive };
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}
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export function shanghaiMonthLastInstant(year: number, month: number): Date {
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return new Date(shanghaiMonthRange(year, month).endExclusive.getTime() - 1);
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}
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export function previousShanghaiMonth(anchor = new Date()): { year: number; month: number } {
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const [y, m] = shanghaiYmd(anchor).split('-').map(Number);
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if (m === 1) return { year: y - 1, month: 12 };
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return { year: y, month: m - 1 };
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}
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export function shanghaiYearMonth(anchor = new Date()): { year: number; month: number } {
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const [y, m] = shanghaiYmd(anchor).split('-').map(Number);
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return { year: y, month: m };
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}
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/** 账期展示：以 periodStart 所在北京月的首末日，避免 UTC 23:59:59 滚到下月 */
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export function shanghaiPeriodYmds(periodStart: Date): { periodStart: string; periodEnd: string } {
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const [y, m] = shanghaiYmd(periodStart).split('-').map(Number);
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const { start, endExclusive } = shanghaiMonthRange(y, m);
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return {
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periodStart: shanghaiYmd(start),
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periodEnd: shanghaiYmd(new Date(endExclusive.getTime() - 1)),
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};
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}
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