refactor: move getPubkeysBySearch () function to a new location

src/utils/search.test.ts

@@ -0,0 +1,21 @@
+import { assertEquals } from '@std/assert';
+
+import { createTestDB } from '@/test.ts';
+import { getPubkeysBySearch } from '@/utils/search.ts';
+
+Deno.test('fuzzy search works', async () => {
+  await using db = await createTestDB();
+
+  await db.kysely.insertInto('author_search').values({
+    pubkey: '47259076c85f9240e852420d7213c95e95102f1de929fb60f33a2c32570c98c4',
+    search: 'patrickReiis patrickdosreis.com',
+  }).execute();
+
+  assertEquals(await getPubkeysBySearch(db.kysely, { q: 'pat rick', limit: 1 }), []);
+  assertEquals(await getPubkeysBySearch(db.kysely, { q: 'patrick dos reis', limit: 1 }), [
+    '47259076c85f9240e852420d7213c95e95102f1de929fb60f33a2c32570c98c4',
+  ]);
+  assertEquals(await getPubkeysBySearch(db.kysely, { q: 'dosreis.com', limit: 1 }), [
+    '47259076c85f9240e852420d7213c95e95102f1de929fb60f33a2c32570c98c4',
+  ]);
+});

src/utils/search.ts

@@ -0,0 +1,16 @@
+import { Kysely, sql } from 'kysely';
+
+import { DittoTables } from '@/db/DittoTables.ts';
+
+/** Get pubkeys whose name and NIP-05 is similar to 'q' */
+export async function getPubkeysBySearch(kysely: Kysely<DittoTables>, opts: { q: string; limit: number }) {
+  const { q, limit } = opts;
+  const pubkeys = (await sql<{ pubkey: string }>`
+        SELECT *, word_similarity(${q}, search) AS sml
+        FROM author_search
+        WHERE ${q} % search
+        ORDER BY sml DESC, search LIMIT ${limit}
+      `.execute(kysely)).rows.map(({ pubkey }) => pubkey);
+
+  return pubkeys;
+}