53 lines
2.2 KiB
TypeScript
53 lines
2.2 KiB
TypeScript
import { NostrSystem, EventPublisher, UserRelaysCache, RequestBuilder, FlatNoteStore, StoreSnapshot } from "../src";
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// Provided in-memory / indexedDb cache for relays
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// You can also implement your own with "RelayCache" interface
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const RelaysCache = new UserRelaysCache();
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// example auth handler using NIP-07
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const AuthHandler = async (challenge: string, relay: string) => {
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const pub = await EventPublisher.nip7();
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if (pub) {
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return await pub.nip42Auth(challenge, relay);
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}
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};
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// Singleton instance to store all connections and access query fetching system
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const System = new NostrSystem({
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relayCache: RelaysCache,
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authHandler: AuthHandler, // can be left undefined if you dont care about NIP-42 Auth
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});
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(async () => {
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// connec to one "bootstrap" relay to pull profiles/relay lists from
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// also used as a fallback relay when gossip model doesnt know which relays to pick, or "authors" are not provided in the request
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await System.ConnectToRelay("wss://relay.snort.social", { read: true, write: false });
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// ID should be unique to the use case, this is important as all data fetched from this ID will be merged into the same NoteStore
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const rb = new RequestBuilder("get-posts");
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rb.withFilter()
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.authors(["63fe6318dc58583cfe16810f86dd09e18bfd76aabc24a0081ce2856f330504ed"]) // Kieran pubkey
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.kinds([1])
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.limit(10);
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const q = System.Query<FlatNoteStore>(FlatNoteStore, rb);
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// basic usage using "onEvent", fired for every event added to the store
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q.onEvent = (sub, e) => {
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console.debug(sub, e);
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};
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// Hookable type using change notification, limited to every 500ms
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const release = q.feed.hook(() => {
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// since we use the FlatNoteStore we expect NostrEvent[]
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// other stores provide different data, like a single event instead of an array (latest version)
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const state = q.feed.snapshot as StoreSnapshot<ReturnType<FlatNoteStore["getSnapshotData"]>>;
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// do something with snapshot of store
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console.log(`We have ${state.data.length} events now!`);
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});
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// release the hook when its not needed anymore
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// these patterns will be managed in @snort/system-react to make it easier to use react or other UI frameworks
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// release();
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})();
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