mirror/ditto
mirror/ditto
1
0
Fork 0
mirror of https://gitlab.com/soapbox-pub/ditto.git synced 2025-12-06 11:29:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Implements trends for SQLite

Browse source
This commit is contained in:
Alex Gleason 2024-08-11 19:50:20 -05:00
parent e6b18e7d95
commit 8db5489350
No known key found for this signature in database
GPG key ID: 7211D1F99744FBB7
1 changed files with 35 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

57
src/trends.ts
View file

@ -12,7 +12,7 @@ const console = new Stickynotes('ditto:trends');
/** Get trending tag values for a given tag in the given time frame. */
export async function getTrendingTagValues(
/** Kysely instance to execute queries on. */
db: DittoDatabase,
{ dialect, kysely }: DittoDatabase,
/** Tag name to filter by, eg `t` or `r`. */
tagNames: string[],
/** Filter of eligible events. */
@ -39,28 +39,41 @@ export async function getTrendingTagValues(
LIMIT 20;
*/
if (dialect === 'sqlite') {
let query = kysely
.selectFrom('nostr_tags')
.select(({ fn }) => [
'nostr_tags.value',
fn.agg<number>('count', ['nostr_tags.pubkey']).distinct().as('authors'),
fn.countAll<number>().as('uses'),
])
.where('nostr_tags.name', 'in', tagNames)
.groupBy('nostr_tags.value')
.orderBy((c) => c.fn.agg('count', ['nostr_tags.pubkey']).distinct(), 'desc');
if (filter.kinds) {
query = query.where('nostr_tags.kind', 'in', filter.kinds);
}
if (typeof filter.since === 'number') {
query = query.where('nostr_tags.created_at', '>=', filter.since);
}
if (typeof filter.until === 'number') {
query = query.where('nostr_tags.created_at', '<=', filter.until);
}
if (typeof filter.limit === 'number') {
query = query.limit(filter.limit);
}
const rows = await query.execute();
return rows.map((row) => ({
value: row.value,
authors: Number(row.authors),
uses: Number(row.uses),
}));
}
return [];
// if (filter.kinds) {
// query = query.where('kind', 'in', filter.kinds);
// }
// if (typeof filter.since === 'number') {
// query = query.where('created_at', '>=', filter.since);
// }
// if (typeof filter.until === 'number') {
// query = query.where('created_at', '<=', filter.until);
// }
// if (typeof filter.limit === 'number') {
// query = query.limit(filter.limit);
// }
// const rows = await query.execute();
// return rows.map((row) => ({
// value: row.value,
// authors: Number(row.authors),
// uses: Number(row.uses),
// }));
}
/** Get trending tags and publish an event with them. */