62 lines
1.6 KiB
TypeScript
62 lines
1.6 KiB
TypeScript
import { removeUndefined, throwIfOffline } from "@snort/shared";
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import { mapEventToProfile, NostrEvent, NostrSystem } from "@snort/system";
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import { EventsCache, Relay, RelayMetrics, SystemDb, UserCache, UserFollows, UserRelays } from "@/Cache";
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import { addEventToFuzzySearch } from "@/Db/FuzzySearch";
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import { LoginStore } from "@/Utils/Login";
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import { hasWasm, WasmOptimizer } from "@/Utils/wasm";
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/**
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* Singleton nostr system
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*/
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export const System = new NostrSystem({
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relays: UserRelays,
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events: EventsCache,
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profiles: UserCache,
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relayMetrics: RelayMetrics,
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cachingRelay: Relay,
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contactLists: UserFollows,
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optimizer: hasWasm ? WasmOptimizer : undefined,
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db: SystemDb,
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buildFollowGraph: true,
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});
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System.on("auth", async (c, r, cb) => {
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const { id } = LoginStore.snapshot();
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const pub = LoginStore.getPublisher(id);
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if (pub) {
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cb(await pub.nip42Auth(c, r));
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}
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});
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System.on("event", (_, ev) => {
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Relay.event(ev);
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EventsCache.discover(ev);
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UserCache.discover(ev);
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addEventToFuzzySearch(ev);
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});
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/**
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* Add profile loader fn
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*/
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if (CONFIG.httpCache) {
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System.profileLoader.loaderFn = async (keys: Array<string>) => {
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return removeUndefined(await Promise.all(keys.map(a => fetchProfile(a))));
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};
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}
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export async function fetchProfile(key: string) {
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try {
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throwIfOffline();
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const rsp = await fetch(`${CONFIG.httpCache}/profile/${key}`);
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if (rsp.ok) {
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const data = (await rsp.json()) as NostrEvent;
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if (data) {
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return mapEventToProfile(data);
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}
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}
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} catch (e) {
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console.error(e);
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}
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}
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