V4.0.9版本更新合伙人H5端调整

packages/domain/src/shanghai-date.ts

@@ -127,3 +127,58 @@ export function shanghaiPeriodYmds(periodStart: Date): { periodStart: string; pe
     periodEnd: shanghaiYmd(new Date(endExclusive.getTime() - 1)),
   };
 }
+
+/** 0=周日 … 6=周六，按北京日历日 */
+export function shanghaiWeekday(d: Date): number {
+  return new Date(`${shanghaiYmd(d)}T12:00:00+08:00`).getUTCDay();
+}
+
+/** 北京自然周：周一 00:00 ～ 下周一 00:00（不含） */
+export function shanghaiWeekRange(anchor = new Date()): { start: Date; endExclusive: Date } {
+  const dayStart = startOfShanghaiDay(anchor);
+  const wd = shanghaiWeekday(dayStart);
+  const daysFromMonday = wd === 0 ? 6 : wd - 1;
+  const start = addShanghaiDays(dayStart, -daysFromMonday);
+  return { start, endExclusive: addShanghaiDays(start, 7) };
+}
+
+export function shanghaiWeekLastInstant(anchor = new Date()): Date {
+  return new Date(shanghaiWeekRange(anchor).endExclusive.getTime() - 1);
+}
+
+export function previousShanghaiWeek(anchor = new Date()): { start: Date; endExclusive: Date } {
+  return shanghaiWeekRange(addShanghaiDays(shanghaiWeekRange(anchor).start, -1));
+}
+
+/** 下一个合伙人出账时刻：周一 08:00（若尚未到本周一 08:00 则为当日） */
+export function nextPartnerBillIssueAt(anchor = new Date()): Date {
+  const { start } = shanghaiWeekRange(anchor);
+  const thisMonday8 = new Date(start.getTime() + 8 * 60 * 60 * 1000);
+  if (anchor.getTime() < thisMonday8.getTime()) return thisMonday8;
+  return new Date(addShanghaiDays(start, 7).getTime() + 8 * 60 * 60 * 1000);
+}
+
+export function shanghaiPeriodYmdsForWeek(periodStart: Date): { periodStart: string; periodEnd: string } {
+  const { start } = shanghaiWeekRange(periodStart);
+  return {
+    periodStart: shanghaiYmd(start),
+    periodEnd: shanghaiYmd(addShanghaiDays(start, 6)),
+  };
+}
+
+/** 周账用真实起止日；跨度超过 8 天则按月展示（兼容历史月账） */
+export function shanghaiBillPeriodYmds(
+  periodStart: Date,
+  periodEnd?: Date,
+): { periodStart: string; periodEnd: string } {
+  if (periodEnd) {
+    const days = shanghaiCalendarDaysBetween(periodStart, periodEnd);
+    if (days >= 0 && days <= 8) {
+      return {
+        periodStart: shanghaiYmd(periodStart),
+        periodEnd: shanghaiYmd(periodEnd),
+      };
+    }
+  }
+  return shanghaiPeriodYmds(periodStart);
+}