fork and copy @satellite/personal-node

src/modules/profile-book.ts

@@ -0,0 +1,40 @@
+import { NostrEvent, kinds } from 'nostr-tools';
+import _throttle from 'lodash.throttle';
+
+import { COMMON_CONTACT_RELAYS } from '../env.js';
+import { logger } from '../logger.js';
+import App from '../app/index.js';
+import PubkeyBatchLoader from './pubkey-batch-loader.js';
+
+/** loads kind 0 metadata for pubkeys */
+export default class ProfileBook {
+	log = logger.extend('ProfileBook');
+	app: App;
+	loader: PubkeyBatchLoader;
+	extraRelays = COMMON_CONTACT_RELAYS;
+
+	constructor(app: App) {
+		this.app = app;
+
+		this.loader = new PubkeyBatchLoader(kinds.Metadata, this.app.pool, (pubkey) => {
+			return this.app.eventStore.getEventsForFilters([{ kinds: [kinds.Metadata], authors: [pubkey] }])?.[0];
+		});
+
+		this.loader.on('event', (event) => this.app.eventStore.addEvent(event));
+		this.loader.on('batch', (found, failed) => {
+			this.log(`Found ${found}, failed ${failed}, pending ${this.loader.queue}`);
+		});
+	}
+
+	getProfile(pubkey: string) {
+		return this.loader.getEvent(pubkey);
+	}
+
+	handleEvent(event: NostrEvent) {
+		this.loader.handleEvent(event);
+	}
+
+	async loadProfile(pubkey: string, relays: string[] = []) {
+		return this.loader.getOrLoadEvent(pubkey, relays);
+	}
+}