92 lines
3.2 KiB
TypeScript
92 lines
3.2 KiB
TypeScript
import { EventEmitter } from 'node:events';
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import { setTimeout } from 'timers/promises';
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import type Log from 'bunyan';
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import type { Want } from '@prisma/client';
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import { Pg } from './pg';
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import { wantDetails } from './utils';
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import routerAuth from './routers/router.auth';
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export enum Events {
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WantAdded = 'WantAdded',
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StartupSync = 'StartupSync',
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ListingsUpdated = 'ListingsUpdated',
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Connection = 'Connection',
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}
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export default function createEvents(log: Log, pg: Pg, discogs, offers) {
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const events = new EventEmitter({ captureRejections: true });
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const connections = new Map();
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async function populateListings(want: Want) {
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try {
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const listings = await discogs.listings(want);
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return listings;
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} catch (e) {
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if (e.message === 'rate limited') {
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log.warn('rate limited, trying again in 60s');
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await setTimeout(60 * 1000);
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return populateListings(want);
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}
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throw e;
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}
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}
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events.on('error', function eventError(e) {
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log.error('event error', e);
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});
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events.on(Events.WantAdded, async function wantAdded(want: Want) {
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log.info({ event: Events.WantAdded, ...wantDetails(want) });
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const listings = await populateListings(want);
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log.info({ listings: listings.length, ...wantDetails(want) }, 'listings added');
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events.emit(Events.ListingsUpdated);
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});
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events.on(Events.StartupSync, async function wantAdded() {
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const wants = await pg.wantsToSync();
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log.info({ event: Events.StartupSync, wants: wants.length });
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for (const want of wants) {
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const listings = await populateListings(want);
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log.info({ listings: listings.length, ...wantDetails(want) }, 'listings added');
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}
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log.info({ wants: wants.length }, 'finished syncing');
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events.emit(Events.ListingsUpdated);
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});
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events.on(Events.ListingsUpdated, async function listingsUpdated() {
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const bundles = await offers.bundles();
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log.info({ event: Events.ListingsUpdated, bundles: bundles.length });
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// const bundle = {
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// username: b[0]?.data.seller.username,
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// seller: b[0]?.data.seller.id,
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// shipsFrom: b[0]?.data.ships_from,
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// total,
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// currency: b[0]?.data.price.currency,
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// shipping: '...',
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// items,
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// mentionsAustralia: shipping.toLowerCase().includes('australia'),
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// mentionsWorldwide: shipping.toLowerCase().includes('world'),
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// }
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for (const bundle of bundles) {
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log.info({ seller: bundle.seller, items: bundle.items.length }, 'generating offers...');
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const listingIds = bundle.items.map(i => i.id);
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const updatedOffers = await offers.generate(listingIds, 100, 30)
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log.info({ offers: updatedOffers.length }, 'offers set');
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}
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log.info('offers up to date');
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});
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events.on(Events.Connection, async function onConnection({ ws, id }) {
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connections.set(id, ws);
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})
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return events;
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} |