37 lines
1.0 KiB
TypeScript
37 lines
1.0 KiB
TypeScript
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import { useMemo } from "react";
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import { HexKey, RelaySettings } from "Nostr";
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import EventKind from "Nostr/EventKind";
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import { Subscriptions } from "Nostr/Subscriptions";
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import useSubscription from "./Subscription";
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export default function useRelaysFeed(pubkey: HexKey) {
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const sub = useMemo(() => {
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const x = new Subscriptions();
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x.Id = `relays:${pubkey.slice(0, 12)}`;
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x.Kinds = new Set([EventKind.Relays]);
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x.Authors = new Set([pubkey]);
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x.Limit = 1;
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return x;
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}, [pubkey]);
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const relays = useSubscription(sub, { leaveOpen: false, cache: true });
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const notes = relays.store.notes;
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const tags = notes.slice(-1)[0]?.tags || [];
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return tags.reduce((rs, tag) => {
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const [t, url, ...settings] = tag;
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if (t === "r") {
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return [
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...rs,
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{
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url,
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settings: {
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read: settings.length === 0 || settings.includes("read"),
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write: settings.length === 0 || settings.includes("write"),
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},
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},
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];
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}
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return rs;
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}, [] as RelaySettings[]);
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}
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