refactor: move directory

src/nostr/useEvent.ts

@@ -0,0 +1,49 @@
+import { createMemo, type Accessor } from 'solid-js';
+import { type Event as NostrEvent } from 'nostr-tools';
+import { createQuery, type CreateQueryResult } from '@tanstack/solid-query';
+import timeout from '@/utils/timeout';
+
+import useBatchedEvent from '@/nostr/useBatchedEvent';
+
+export type UseEventProps = {
+  // TODO リレーURLを考慮したい
+  relayUrls: string[];
+  eventId: string;
+};
+
+export type UseEvent = {
+  event: Accessor<NostrEvent | undefined>;
+  query: CreateQueryResult<NostrEvent | undefined>;
+};
+
+const { exec } = useBatchedEvent<UseEventProps>(() => ({
+  generateKey: ({ eventId }: UseEventProps) => eventId,
+  mergeFilters: (args: UseEventProps[]) => {
+    const eventIds = args.map((arg) => arg.eventId);
+    return [{ kinds: [1], ids: eventIds }];
+  },
+  extractKey: (event: NostrEvent) => event.id,
+}));
+
+const useEvent = (propsProvider: () => UseEventProps | null): UseEvent => {
+  const props = createMemo(propsProvider);
+  const query = createQuery(
+    () => ['useEvent', props()] as const,
+    ({ queryKey, signal }) => {
+      const [, currentProps] = queryKey;
+      if (currentProps == null) return undefined;
+      return timeout(15000, `useEvent: ${currentProps.eventId}`)(exec(currentProps, signal));
+    },
+    {
+      // a hour
+      staleTime: 60 * 60 * 1000,
+      cacheTime: 60 * 60 * 1000,
+    },
+  );
+
+  const event = () => query.data;
+
+  return { event, query };
+};
+
+export default useEvent;