feat(calendar): expose an accessible calendar picker

webui/src/features/calendar/calendarPickerLogic.ts

@@ -0,0 +1,24 @@
+type CalendarPickerAuth = {
+  tenant: { id: string };
+  active_tenant?: { id: string };
+};
+
+export type CalendarPickerOption = {
+  id: string;
+  name: string;
+  is_default: boolean;
+};
+
+export const CALENDAR_PICKER_READ_SCOPE = "calendar:calendar:read";
+
+export function calendarPickerOptions<TCalendar extends CalendarPickerOption>(calendars: TCalendar[]): TCalendar[] {
+  return [...calendars].sort((left, right) => {
+    if (left.is_default !== right.is_default) return left.is_default ? -1 : 1;
+    const nameDelta = left.name.localeCompare(right.name, undefined, { sensitivity: "base" });
+    return nameDelta !== 0 ? nameDelta : left.id.localeCompare(right.id);
+  });
+}
+
+export function calendarPickerTenantId(auth: CalendarPickerAuth): string {
+  return (auth.active_tenant ?? auth.tenant).id;
+}