ik hou van kaas

frontend(experimental)/newchat/lib/hooks.ts

@@ -2,6 +2,7 @@
 
 import useSWR from "swr"
 import * as api from "./api"
+import type { CalendarEvent, SignupStatus } from "./types"
 
 export function useRooms() {
   const { data, error, isLoading, mutate } = useSWR("rooms", () => api.getRooms())
@@ -34,3 +35,31 @@ export function useRoomPermissions(roomId: number | null) {
   )
   return { permissions: data, error, isLoading, mutate }
 }
+
+// Bulk-fetch the current user's own RSVP status for every visible proposal
+// event, so the week view can color-code events the user has declined.
+// Only proposal-type events carry RSVPs, so we skip busy/private blocks.
+export function useMyResponses(events: CalendarEvent[], currentUserId: number | null) {
+  const proposalIds = events
+    .filter((e) => e.type === "proposal")
+    .map((e) => e.id)
+    .sort((a, b) => a - b)
+
+  const key =
+    currentUserId !== null && proposalIds.length > 0
+      ? ["my-responses", currentUserId, proposalIds.join(",")]
+      : null
+
+  const { data, isLoading } = useSWR(key, async () => {
+    const entries = await Promise.all(
+      proposalIds.map(async (id) => {
+        const responses = await api.getEventResponses(id)
+        const mine = responses.find((r) => r.user_id === currentUserId)?.status
+        return [id, mine] as [number, SignupStatus | undefined]
+      }),
+    )
+    return Object.fromEntries(entries) as Record<number, SignupStatus | undefined>
+  })
+
+  return { myResponses: data ?? {}, isLoading }
+}