133 lines
5.0 KiB
TypeScript
133 lines
5.0 KiB
TypeScript
/** 中国星期名称 */
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const WEEKDAY_CN = ["周日", "周一", "周二", "周三", "周四", "周五", "周六"] as const;
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/** 中国时区 */
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const TZ = "Asia/Shanghai";
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/**
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* 获取中国时区下的日期数字（月、日、星期）
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* 无论服务器/客户端在何地，均返回中国公历
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*/
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function getChinaDateParts(): { year: number; month: number; day: number; weekday: number } {
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const now = new Date();
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const formatter = new Intl.DateTimeFormat("en-CA", {
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timeZone: TZ,
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year: "numeric",
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month: "numeric",
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day: "numeric",
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weekday: "short",
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});
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const parts = formatter.formatToParts(now);
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const get = (type: string) => parseInt(parts.find((p) => p.type === type)?.value ?? "0", 10);
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const weekdayStr = parts.find((p) => p.type === "weekday")?.value ?? "Sun";
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const weekdayMap: Record<string, number> = { Sun: 0, Mon: 1, Tue: 2, Wed: 3, Thu: 4, Fri: 5, Sat: 6 };
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return {
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year: get("year"),
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month: get("month"),
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day: get("day"),
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weekday: weekdayMap[weekdayStr] ?? 0,
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};
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}
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/**
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* 获取当前中国公历时间字符串，用于上传
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* 格式：YYYY-MM-DD HH:mm:ss（中国时区）
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*/
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export function getNowChinaStr(): string {
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const formatter = new Intl.DateTimeFormat("en-CA", {
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timeZone: TZ,
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year: "numeric",
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month: "2-digit",
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day: "2-digit",
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hour: "2-digit",
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minute: "2-digit",
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second: "2-digit",
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hour12: false,
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});
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const parts = formatter.formatToParts(new Date());
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const pad = (s: string) => s.padStart(2, "0");
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const get = (type: string) => parts.find((p) => p.type === type)?.value ?? "0";
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return `${get("year")}-${pad(get("month"))}-${pad(get("day"))} ${pad(get("hour"))}:${pad(get("minute"))}:${pad(get("second"))}`;
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}
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/**
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* 格式化为中文日期：M月D日 周X
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*/
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function formatDateCN(month: number, day: number, weekday: number): string {
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return `${month}月${day}日 ${WEEKDAY_CN[weekday]}`;
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}
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/**
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* 获取下一个周六、周日的日期（中国公历）
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* 使用 +08:00 显式构造，避免服务器/客户端时区影响
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*/
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export function getNextWeekendDates(): { saturday: string; sunday: string } {
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const { year, month, day, weekday } = getChinaDateParts();
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const pad = (n: number) => String(n).padStart(2, "0");
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const todayStr = `${year}-${pad(month)}-${pad(day)}T12:00:00+08:00`;
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const today = new Date(todayStr);
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const daysToSat = weekday === 0 ? 6 : weekday === 6 ? 0 : 6 - weekday;
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const saturday = new Date(today);
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saturday.setUTCDate(saturday.getUTCDate() + daysToSat);
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const sunday = new Date(saturday);
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sunday.setUTCDate(sunday.getUTCDate() + 1);
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return {
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saturday: formatDateCN(saturday.getUTCMonth() + 1, saturday.getUTCDate(), 6),
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sunday: formatDateCN(sunday.getUTCMonth() + 1, sunday.getUTCDate(), 0),
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};
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}
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/**
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* 获取中国公历本周一 00:00 至周日 23:59:59 的 UTC 时间范围
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* 用于 PocketBase created 过滤。PocketBase 要求 Y-m-d H:i:s.uZ 格式（空格非 T）
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*/
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export function getThisWeekRangeISO(): { start: string; end: string } {
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const { year, month, day, weekday } = getChinaDateParts();
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const pad = (n: number) => String(n).padStart(2, "0");
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const todayStr = `${year}-${pad(month)}-${pad(day)}T12:00:00+08:00`;
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const today = new Date(todayStr);
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const daysToMonday = weekday === 0 ? 6 : weekday - 1;
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const monday = new Date(today);
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monday.setUTCDate(monday.getUTCDate() - daysToMonday);
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const sunday = new Date(monday);
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sunday.setUTCDate(sunday.getUTCDate() + 6);
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const mondayStr = `${monday.getUTCFullYear()}-${pad(monday.getUTCMonth() + 1)}-${pad(monday.getUTCDate())}T00:00:00+08:00`;
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const sundayStr = `${sunday.getUTCFullYear()}-${pad(sunday.getUTCMonth() + 1)}-${pad(sunday.getUTCDate())}T23:59:59.999+08:00`;
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const startDate = new Date(mondayStr);
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const endDate = new Date(sundayStr);
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const fmt = (d: Date, ms: string) => {
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const y = d.getUTCFullYear();
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const m = pad(d.getUTCMonth() + 1);
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const day = pad(d.getUTCDate());
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const h = pad(d.getUTCHours());
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const min = pad(d.getUTCMinutes());
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const s = pad(d.getUTCSeconds());
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return `${y}-${m}-${day} ${h}:${min}:${s}.${ms}Z`;
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};
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return {
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start: fmt(startDate, "000"),
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end: fmt(endDate, "999"),
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};
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}
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/**
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* 获取中国公历本周一、周日的日期字符串（YYYY-MM-DD），用于 submitted_at_cn 过滤
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*/
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export function getThisWeekRangeChinaStr(): { start: string; end: string } {
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const { year, month, day, weekday } = getChinaDateParts();
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const pad = (n: number) => String(n).padStart(2, "0");
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const todayStr = `${year}-${pad(month)}-${pad(day)}T12:00:00+08:00`;
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const today = new Date(todayStr);
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const daysToMonday = weekday === 0 ? 6 : weekday - 1;
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const monday = new Date(today);
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monday.setUTCDate(monday.getUTCDate() - daysToMonday);
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const sunday = new Date(monday);
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sunday.setUTCDate(sunday.getUTCDate() + 6);
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return {
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start: `${monday.getUTCFullYear()}-${pad(monday.getUTCMonth() + 1)}-${pad(monday.getUTCDate())} 00:00:00`,
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end: `${sunday.getUTCFullYear()}-${pad(sunday.getUTCMonth() + 1)}-${pad(sunday.getUTCDate())} 23:59:59`,
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};
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}
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