Feature 19: Admin PWA (#187-#210) (#211)

Co-authored-by: dev_agent <17+dev_agent@code.cubecraftcreations.com> Co-committed-by: dev_agent <17+dev_agent@code.cubecraftcreations.com>
2026-09-24 00:08:58 -04:00
parent b8532bacde
commit fe44740450
66 changed files with 14775 additions and 0 deletions
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+/**
+ * Date labels for the Schedule tab. Calendar dates are formatted in UTC from
+ * their components, so the printed day never shifts with the viewer's offset.
+ */
+import { dayNumber } from "./cycle";
+
+const LOCALE = "en-US";
+
+function utcDate(iso: string): Date {
+  return new Date(dayNumber(iso) * 86_400_000);
+}
+
+function format(iso: string, options: Intl.DateTimeFormatOptions): string {
+  return new Intl.DateTimeFormat(LOCALE, { ...options, timeZone: "UTC" }).format(utcDate(iso));
+}
+
+/** "Tuesday, Sep 1" */
+export function anchorLabel(iso: string): string {
+  return `${format(iso, { weekday: "long" })}, ${format(iso, { month: "short", day: "numeric" })}`;
+}
+
+/** "September 2026" */
+export function monthLabel(iso: string): string {
+  return format(iso, { month: "long", year: "numeric" });
+}
+
+/** "Sep 4" */
+export function shortDate(iso: string): string {
+  return format(iso, { month: "short", day: "numeric" });
+}
+
+/** "Sep 4 – 7", "Sep 28 – Oct 2", or "Sep 4" for a single day. */
+export function dateRange(start: string, end: string): string {
+  if (start === end) return shortDate(start);
+  const sameMonth = start.slice(0, 7) === end.slice(0, 7);
+  return `${shortDate(start)} – ${sameMonth ? Number(end.slice(8)) : shortDate(end)}`;
+}