Improve family invitations and absence management flows

src/app/dashboard/admin/abwesenheiten/page.tsx

@@ -1,9 +1,9 @@
-import { differenceInCalendarDays, format, isWeekend } from "date-fns";
 import { TerminStatus, TerminType, UserRole } from "@prisma/client";
 
 import { getDailyAbsences } from "@/actions/absences";
 import { requireRole } from "@/lib/auth-utils";
 import { prisma } from "@/lib/prisma";
+import { absenceDate, absenceToday, isAbsenceDate } from "@/lib/absence-policy";
 import { AbsencesClient } from "./_components/absences-client";
 import { type AbsenceTableItem } from "./absence-table";
 
@@ -21,9 +21,10 @@ export default async function AdminAbwesenheitenPage({
   ]);
   const resolvedSearchParams = await searchParams;
   const kitaId = session.user.kitaId!;
-  const today = startOfLocalDay(new Date());
+  const todayKey = absenceToday();
+  const today = absenceDate(todayKey);
   const selectedDate = parseDateParam(resolvedSearchParams.date, today);
-  const dateKey = format(selectedDate, "yyyy-MM-dd");
+  const dateKey = selectedDate.toISOString().slice(0, 10);
   const result = await getDailyAbsences({ date: dateKey });
   const absences = result.absences ?? [];
   const childCount = await prisma.child.count({
@@ -46,9 +47,9 @@ export default async function AdminAbwesenheitenPage({
     select: { title: true, type: true },
     orderBy: { startDate: "asc" },
   });
-  const isToday = dateKey === format(today, "yyyy-MM-dd");
-  const isTooFarFuture = differenceInCalendarDays(selectedDate, today) > 30;
-  const isClosedDay = isWeekend(selectedDate) || !!closure;
+  const isToday = dateKey === todayKey;
+  const isTooFarFuture = (selectedDate.getTime() - today.getTime()) / 86_400_000 > 30;
+  const isClosedDay = [0, 6].includes(selectedDate.getUTCDay()) || !!closure;
   const tableItems: AbsenceTableItem[] = absences.map((absence) => ({
     id: absence.id,
     childName: absence.childName,
@@ -57,6 +58,7 @@ export default async function AdminAbwesenheitenPage({
     note: absence.note,
     startDate: absence.startDate,
     endDate: absence.endDate,
+    updatedAt: absence.updatedAt,
   }));
 
   return (
@@ -67,11 +69,11 @@ export default async function AdminAbwesenheitenPage({
         upcomingAbsenceCount={upcomingAbsenceCount}
         closure={closure}
         dateKey={dateKey}
-        selectedDateStr={selectedDate.toISOString()}
+        selectedDateStr={dateKey}
         isToday={isToday}
         isTooFarFuture={isTooFarFuture}
         isClosedDay={isClosedDay}
-        todayStr={today.toISOString()}
+        todayStr={todayKey}
         error={result.error ?? null}
       />
     </div>
@@ -79,13 +81,5 @@ export default async function AdminAbwesenheitenPage({
 }
 
 function parseDateParam(value: string | undefined, fallback: Date) {
-  if (!value) return fallback;
-  const parsed = new Date(`${value}T00:00:00`);
-  return Number.isNaN(parsed.getTime()) ? fallback : parsed;
-}
-
-function startOfLocalDay(date: Date) {
-  const nextDate = new Date(date);
-  nextDate.setHours(0, 0, 0, 0);
-  return nextDate;
+  return value && isAbsenceDate(value) ? absenceDate(value) : fallback;
 }