mirror of
https://github.com/BlowaterNostr/blowater.git
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43 lines
1.6 KiB
TypeScript
43 lines
1.6 KiB
TypeScript
import {
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ConnectionPool,
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SubscriptionAlreadyExist,
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} from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/relay.ts";
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import { Database_Contextual_View } from "../database.ts";
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import { NoteID } from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/nip19.ts";
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import { verifyEvent } from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/nostr.ts";
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export class EventSyncer {
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constructor(private readonly pool: ConnectionPool, private readonly db: Database_Contextual_View) {}
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syncEvent(id: NoteID) {
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const iter = Array.from(this.db.filterEvents((e) => e.id == id.hex));
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if (iter.length > 0) {
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return iter[0];
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}
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return (async () => {
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let events = await this.pool.newSub("EventSyncer", {
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ids: [id.hex],
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});
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if (events instanceof SubscriptionAlreadyExist) {
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events = await this.pool.updateSub("EventSyncer", {
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ids: [id.hex],
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});
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}
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if (events instanceof Error) {
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return events;
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}
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for await (const { res, url } of events) {
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if (res.type == "EOSE") {
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continue;
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}
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const ok = await verifyEvent(res.event);
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if (!ok) {
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console.warn(res.event, url, "not valid");
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continue;
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}
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await this.db.addEvent(res.event);
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return; // just need to read from 1 relay
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}
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})();
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}
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}
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