Alex Gleason
84 lines
2.6 KiB
TypeScript
84 lines
2.6 KiB
TypeScript
import type { RelayMetadata } from '@/contexts/AppContext';
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/** Relay used for NIP-50 search, trending, and streaming queries. */
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export const DITTO_RELAY = 'wss://relay.ditto.pub/';
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/** All Ditto relays used for search, trending, and streaming queries. */
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export const DITTO_RELAYS: string[] = [
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'wss://relay.ditto.pub/',
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'wss://relay.dreamith.to/',
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];
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/** Relay used for kind 34236 addressable short video events, used by divine */
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export const DIVINE_RELAY = 'wss://divine.video/';
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/** Relay used for Zapstore app metadata (kind 32267) and releases (kind 30063). */
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export const ZAPSTORE_RELAY = 'wss://relay.zapstore.dev';
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/** Normalize a relay URL for deduplication (lowercase, strip trailing slash). */
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function normalizeUrl(url: string): string {
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return url.toLowerCase().replace(/\/+$/, '');
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}
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/**
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* App default relays that are used as a fallback when the user has no NIP-65 relay list,
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* and can be optionally combined with user relays.
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*/
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export const APP_RELAYS: RelayMetadata = {
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relays: [
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{ url: 'wss://relay.ditto.pub/', read: true, write: true },
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{ url: 'wss://relay.dreamith.to/', read: true, write: true },
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{ url: 'wss://relay.primal.net/', read: true, write: true },
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{ url: 'wss://relay.damus.io/', read: true, write: true },
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{ url: 'wss://nos.lol/', read: true, write: false },
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],
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updatedAt: 0,
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};
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/**
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* Get the effective relay list based on user settings.
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* Combines app relays with user relays if useAppRelays is true,
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* otherwise returns only user relays.
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*/
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export function getEffectiveRelays(
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userRelays: RelayMetadata,
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useAppRelays: boolean
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): RelayMetadata {
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if (!useAppRelays) {
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return deduplicateRelays(userRelays);
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}
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// Merge app relays with user relays, avoiding duplicates by normalized URL
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const seen = new Set<string>();
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const mergedRelays: RelayMetadata['relays'][number][] = [];
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for (const relay of [...APP_RELAYS.relays, ...userRelays.relays]) {
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const normalized = normalizeUrl(relay.url);
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if (!seen.has(normalized)) {
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seen.add(normalized);
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mergedRelays.push(relay);
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}
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}
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return {
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relays: mergedRelays,
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updatedAt: userRelays.updatedAt,
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};
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}
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/** Deduplicate relays within a single list by normalized URL. */
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function deduplicateRelays(metadata: RelayMetadata): RelayMetadata {
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const seen = new Set<string>();
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const relays: RelayMetadata['relays'][number][] = [];
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for (const relay of metadata.relays) {
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const normalized = normalizeUrl(relay.url);
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if (!seen.has(normalized)) {
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seen.add(normalized);
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relays.push(relay);
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}
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}
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return { relays, updatedAt: metadata.updatedAt };
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}
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