[#90] added freebusy (#618)

src/features/Events/api/getFreeBusyForEventAttendeesPOST.ts

@@ -0,0 +1,22 @@
+import { api } from "@/utils/apiUtils";
+
+export async function getFreeBusyForEventAttendeesPOST(
+  userIds: string[],
+  start: string,
+  end: string,
+  eventUid: string
+): Promise<Record<string, boolean>> {
+  const r = await api("dav/calendars/freebusy", {
+    method: "POST",
+    headers: { Accept: "application/json, text/plain, */*" },
+    body: JSON.stringify({ start, end, users: userIds, uids: [eventUid] }),
+  });
+  if (!r.ok) throw new Error(`HTTP ${r.status}`);
+
+  const { users } = (await r.json()) as {
+    users: { id: string; calendars: { busy: unknown[] }[] }[];
+  };
+  return Object.fromEntries(
+    users.map((u) => [u.id, u.calendars.some((cal) => cal.busy.length > 0)])
+  );
+}