Add music player

src/routes/api/music/+server.ts

@@ -0,0 +1,8 @@
+import { json } from '@sveltejs/kit';
+import { getPlaylistTracks } from '#lib/server/music';
+import type { RequestHandler } from './$types';
+
+export const GET: RequestHandler = async () => {
+	const tracks = await getPlaylistTracks();
+	return json(tracks, { headers: { 'Cache-Control': 'no-store' } });
+};

src/routes/api/music/[id]/+server.ts

@@ -0,0 +1,17 @@
+import { error } from '@sveltejs/kit';
+import { isPlaylistVideo, streamTrackAsMp3 } from '#lib/server/music';
+import type { RequestHandler } from './$types';
+
+export const GET: RequestHandler = ({ params, url }) => {
+	if (!isPlaylistVideo(params.id)) error(404, 'Song not found');
+
+	const requestedStart = Number(url.searchParams.get('start') ?? 0);
+	const startSeconds = Number.isFinite(requestedStart) && requestedStart > 0 ? Math.floor(requestedStart) : 0;
+
+	return new Response(streamTrackAsMp3(params.id, startSeconds), {
+		headers: {
+			'Content-Type': 'audio/mpeg',
+			'Cache-Control': 'no-store'
+		}
+	});
+};