musicshare/apps/api/test/now-playing.test.ts

import { describe, expect, it } from 'vitest';
import { db, schema } from '../src/db';
import { createRedis } from '../src/lib/redis';
import { applyPollResult } from '../src/services/nowPlaying';
import { resolveQueue } from '../src/services/queues';
import { upsertTrack } from '../src/services/tracks';
import { createUser, useTestApp } from './helpers';

const app = useTestApp();

/** Collect messages published for a user while `fn` runs. */
async function published(userId: string, fn: () => Promise<unknown>): Promise<{ track: { title: string }; isPlaying: boolean }[]> {
  const sub = createRedis();
  const messages: string[] = [];
  await sub.subscribe(`np:${userId}`);
  sub.on('message', (_c, m) => messages.push(m));
  await fn();
  await new Promise((r) => setTimeout(r, 50));
  sub.disconnect();
  return messages.map((m) => JSON.parse(m));
}

const track = (title: string, extra = {}) => ({ track: { title, artist: 'Daft Punk', ...extra }, isPlaying: true, progressMs: 1000 });

describe('applyPollResult', () => {
  it('publishes on a new track and queues link resolution, but not on repeat polls', async () => {
    const { user } = await createUser(app(), 'bob');
    const first = await published(user.id, () => applyPollResult(user.id, 'spotify', track('One More Time')));
    expect(first).toHaveLength(1);
    expect(first[0]).toMatchObject({ track: { title: 'One More Time' }, isPlaying: true });
    expect(await resolveQueue.getJobCounts('waiting')).toMatchObject({ waiting: 1 });

    const repeat = await published(user.id, () => applyPollResult(user.id, 'spotify', track('One More Time')));
    expect(repeat).toHaveLength(0);
  });

  it('only the source that reported playback can mark it stopped', async () => {
    const { user } = await createUser(app(), 'bob');
    await applyPollResult(user.id, 'spotify', track('Digital Love'));

    // an idle Last.fm connection must not clobber the live Spotify session
    expect(await applyPollResult(user.id, 'lastfm', null)).toBe(false);
    let [np] = await db.select().from(schema.nowPlaying);
    expect(np?.isPlaying).toBe(true);

    const stopped = await published(user.id, () => applyPollResult(user.id, 'spotify', null));
    [np] = await db.select().from(schema.nowPlaying);
    expect(np?.isPlaying).toBe(false);
    expect(stopped[0]?.isPlaying).toBe(false);
  });

  it('treats a paused result as not playing', async () => {
    const { user } = await createUser(app(), 'bob');
    await applyPollResult(user.id, 'plex', track('Digital Love'));
    await applyPollResult(user.id, 'plex', { ...track('Digital Love'), isPlaying: false });
    const [np] = await db.select().from(schema.nowPlaying);
    expect(np?.isPlaying).toBe(false);
  });
});

describe('upsertTrack dedupe', () => {
  it('matches on ISRC first', async () => {
    const a = await upsertTrack({ title: 'Song', artist: 'X', isrc: 'USABC1234567' });
    const b = await upsertTrack({ title: 'Song (Radio Edit)', artist: 'Someone Else', isrc: 'USABC1234567' });
    expect(b).toEqual({ id: a.id, created: false });
  });

  it('matches on a known provider id', async () => {
    const a = await upsertTrack({ title: 'Song', artist: 'X', links: { spotify: { id: 'sp1', url: 'https://open.spotify.com/track/sp1' } } });
    const b = await upsertTrack({ title: 'Totally Different Name', artist: 'Y', links: { spotify: { id: 'sp1', url: 'https://open.spotify.com/track/sp1' } } });
    expect(b.id).toBe(a.id);
  });

  it('matches on normalized artist|title and backfills missing fields', async () => {
    const a = await upsertTrack({ title: 'Midnight City', artist: 'M83' });
    const b = await upsertTrack({ title: 'Midnight City (Remastered)', artist: 'M83', isrc: 'GB55H1100002', album: 'Hurry Up' });
    expect(b.id).toBe(a.id);
    const [row] = await db.select().from(schema.tracks);
    expect(row).toMatchObject({ isrc: 'GB55H1100002', album: 'Hurry Up' });
  });

  it('keeps different songs separate', async () => {
    const a = await upsertTrack({ title: 'Midnight City', artist: 'M83' });
    const b = await upsertTrack({ title: 'Wait', artist: 'M83' });
    expect(b.id).not.toBe(a.id);
  });
});