Add SQLite library with API, library desktop apps and MobyGames scraper

src/lib/server/lastfm/database.ts

@@ -0,0 +1,49 @@
+import path from 'node:path';
+import { openSqlite, type SqlDatabase } from '../sqlite';
+import { importLegacyFiles } from './legacy';
+
+export type { SqlDatabase };
+
+export const lastfmDataDirectory = path.resolve(process.env.LASTFM_DATA_DIR ?? 'data/lastfm');
+const databasePath = path.join(lastfmDataDirectory, 'lastfm.db');
+
+const schema = `
+	CREATE TABLE IF NOT EXISTS scrobbles (
+		played_at INTEGER NOT NULL,
+		artist TEXT NOT NULL,
+		track TEXT NOT NULL,
+		album TEXT NOT NULL,
+		UNIQUE (played_at, artist, track)
+	);
+	CREATE INDEX IF NOT EXISTS scrobbles_played_at ON scrobbles (played_at);
+	CREATE TABLE IF NOT EXISTS album_covers (
+		artist TEXT NOT NULL,
+		album TEXT NOT NULL,
+		image TEXT NOT NULL,
+		PRIMARY KEY (artist, album)
+	);
+	CREATE TABLE IF NOT EXISTS track_covers (
+		artist TEXT NOT NULL,
+		track TEXT NOT NULL,
+		image TEXT NOT NULL,
+		PRIMARY KEY (artist, track)
+	);
+	CREATE TABLE IF NOT EXISTS cover_images (
+		id TEXT PRIMARY KEY,
+		content_type TEXT NOT NULL,
+		data BLOB NOT NULL
+	);
+`;
+
+let opening: Promise<SqlDatabase> | null = null;
+
+async function openLastfmDatabase(): Promise<SqlDatabase> {
+	const database = await openSqlite(databasePath, schema);
+	await importLegacyFiles(database, lastfmDataDirectory);
+	return database;
+}
+
+export function lastfmDatabase(): Promise<SqlDatabase> {
+	opening ??= openLastfmDatabase();
+	return opening;
+}