fix: 修复上行归属并实现签名质量日报优化

api/src/signature-analytics/analytics-date.ts

@@ -0,0 +1,31 @@
+import { BadRequestException } from '@nestjs/common';
+
+const dayFormatter = new Intl.DateTimeFormat('en-CA', {
+  timeZone: 'Asia/Shanghai',
+  year: 'numeric',
+  month: '2-digit',
+  day: '2-digit',
+});
+export const todayKey = (now = new Date()) => dayFormatter.format(now);
+export const databaseDay = (key: string) => new Date(`${key}T00:00:00.000Z`);
+export const startOfDay = (key: string) => new Date(`${key}T00:00:00+08:00`);
+export const addDays = (key: string, days: number) =>
+  new Date(databaseDay(key).getTime() + days * 86_400_000).toISOString().slice(0, 10);
+export function analyticsDate(value?: string, now = new Date()) {
+  const key = value || todayKey(now);
+  if (
+    !/^\d{4}-\d{2}-\d{2}$/.test(key) ||
+    !Number.isFinite(databaseDay(key).getTime()) ||
+    databaseDay(key).toISOString().slice(0, 10) !== key ||
+    key > todayKey(now)
+  ) {
+    throw new BadRequestException('统计日期必须为有效的北京时间日期，不能晚于今天');
+  }
+  return key;
+}
+export function analyticsPage(page = 1, pageSize = 25) {
+  if (!Number.isInteger(page) || page < 1 || ![10, 25, 50, 100].includes(pageSize))
+    throw new BadRequestException('分页参数无效');
+  return { page, pageSize };
+}
+export const mutableDay = (day: string, now = new Date()) => day < todayKey(now) && day >= addDays(todayKey(now), -3);