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refactor(trends.ts): move logic one level up, rename 'languagesIds' to 'values', remove WITH SQL statement

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P. Reis 2024-10-03 19:40:29 -03:00
parent a5def9fa6c
commit 67b0684a81
1 changed files with 55 additions and 61 deletions
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116
src/trends.ts
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@ -1,5 +1,4 @@
import { LanguageCode } from 'iso-639-1';
import { NostrEvent, NostrFilter } from '@nostrify/nostrify';
import { NostrFilter } from '@nostrify/nostrify';
import { Stickynotes } from '@soapbox/stickynotes';
import { Kysely, sql } from 'kysely';
@ -20,48 +19,39 @@ export async function getTrendingTagValues(
tagNames: string[],
/** Filter of eligible events. */
filter: NostrFilter,
/** Results must be inside 'languagesIds' */
languagesIds?: string[],
/** If present, only tag values in this list are permitted to trend. */
values?: string[],
): Promise<{ value: string; authors: number; uses: number }[]> {
let query = kysely.with('trends', (db) => {
let query = db
.selectFrom([
'nostr_events',
sql<{ key: string; value: string }>`jsonb_each_text(nostr_events.tags_index)`.as('kv'),
sql<{ key: string; value: string }>`jsonb_array_elements_text(kv.value::jsonb)`.as('element'),
])
.select(({ fn }) => [
fn<string>('lower', ['element.value']).as('value'),
fn.agg<number>('count', ['nostr_events.pubkey']).distinct().as('authors'),
fn.countAll<number>().as('uses'),
])
.where('kv.key', '=', (eb) => eb.fn.any(eb.val(tagNames)))
.groupBy((eb) => eb.fn<string>('lower', ['element.value']))
.orderBy((eb) => eb.fn.agg('count', ['nostr_events.pubkey']).distinct(), 'desc');
let query = kysely
.selectFrom([
'nostr_events',
sql<{ key: string; value: string }>`jsonb_each_text(nostr_events.tags_index)`.as('kv'),
sql<{ key: string; value: string }>`jsonb_array_elements_text(kv.value::jsonb)`.as('element'),
])
.select(({ fn }) => [
fn<string>('lower', ['element.value']).as('value'),
fn.agg<number>('count', ['nostr_events.pubkey']).distinct().as('authors'),
fn.countAll<number>().as('uses'),
])
.where('kv.key', '=', (eb) => eb.fn.any(eb.val(tagNames)))
.groupBy((eb) => eb.fn<string>('lower', ['element.value']))
.orderBy('authors desc').orderBy('uses desc');
if (filter.kinds) {
query = query.where('nostr_events.kind', '=', ({ fn, val }) => fn.any(val(filter.kinds)));
}
if (filter.authors) {
query = query.where('nostr_events.pubkey', '=', ({ fn, val }) => fn.any(val(filter.authors)));
}
if (typeof filter.since === 'number') {
query = query.where('nostr_events.created_at', '>=', filter.since);
}
if (typeof filter.until === 'number') {
query = query.where('nostr_events.created_at', '<=', filter.until);
}
return query;
})
.selectFrom(['trends'])
.select(['value', 'authors', 'uses']);
if (languagesIds) {
query = query.where('trends.value', 'in', languagesIds);
if (filter.kinds) {
query = query.where('nostr_events.kind', '=', ({ fn, val }) => fn.any(val(filter.kinds)));
}
if (filter.authors) {
query = query.where('nostr_events.pubkey', '=', ({ fn, val }) => fn.any(val(filter.authors)));
}
if (typeof filter.since === 'number') {
query = query.where('nostr_events.created_at', '>=', filter.since);
}
if (typeof filter.until === 'number') {
query = query.where('nostr_events.created_at', '<=', filter.until);
}
if (values) {
query = query.where('element.value', 'in', values);
}
query = query.orderBy('authors desc').orderBy('uses desc');
if (typeof filter.limit === 'number') {
query = query.limit(filter.limit);
}
@ -83,7 +73,7 @@ export async function updateTrendingTags(
limit: number,
extra = '',
aliases?: string[],
language?: LanguageCode,
values?: string[],
) {
console.info(`Updating trending ${l}...`);
const kysely = await Storages.kysely();
@ -94,25 +84,15 @@ export async function updateTrendingTags(
const tagNames = aliases ? [tagName, ...aliases] : [tagName];
let languagesIds: NostrEvent['id'][] = [];
if (language) {
const result = (await kysely.selectFrom('nostr_events')
.select('id')
.where('language', '=', language)
.where('nostr_events.created_at', '>=', yesterday)
.where('nostr_events.created_at', '<=', now)
.execute()).map((event) => event.id);
languagesIds = result;
}
try {
const trends = await getTrendingTagValues(kysely, tagNames, {
kinds,
since: yesterday,
until: now,
limit,
}, languagesIds);
}, values);
console.log(trends);
if (!trends.length) {
console.info(`No trending ${l} found. Skipping.`);
return;
@ -125,7 +105,7 @@ export async function updateTrendingTags(
content: '',
tags: [
['L', 'pub.ditto.trends'],
['l', languagesIds.length ? `${l}.${language}` : l, 'pub.ditto.trends'],
['l', l, 'pub.ditto.trends'],
...trends.map(({ value, authors, uses }) => [tagName, value, extra, authors.toString(), uses.toString()]),
],
created_at: Math.floor(Date.now() / 1000),
@ -150,16 +130,30 @@ export function updateTrendingZappedEvents(): Promise<void> {
/** Update trending events. */
export async function updateTrendingEvents(): Promise<void> {
const languages = Conf.preferredLanguages;
if (!languages) return updateTrendingTags('#e', 'e', [1, 6, 7, 9735], 40, Conf.relay, ['q']);
const results: Promise<void>[] = [
updateTrendingTags('#e', 'e', [1, 6, 7, 9735], 40, Conf.relay, ['q']),
];
const promise: Promise<void>[] = [];
const kysely = await Storages.kysely();
for (const language of languages) {
promise.push(updateTrendingTags('#e', 'e', [1, 6, 7, 9735], 40, Conf.relay, ['q'], language));
for (const language of Conf.preferredLanguages ?? []) {
const yesterday = Math.floor((Date.now() - Time.days(1)) / 1000);
const now = Math.floor(Date.now() / 1000);
const rows = await kysely
.selectFrom('nostr_events')
.select('nostr_events.id')
.where('nostr_events.language', '=', language)
.where('nostr_events.created_at', '>=', yesterday)
.where('nostr_events.created_at', '<=', now)
.execute();
const ids = rows.map((row) => row.id);
results.push(updateTrendingTags(`#e.${language}`, 'e', [1, 6, 7, 9735], 40, Conf.relay, ['q'], ids));
}
await Promise.allSettled(promise);
await Promise.allSettled(results);
}
/** Update trending hashtags. */