import test from 'node:test';
import assert from 'node:assert/strict';
import { existsSync } from 'node:fs';
import { trackFor, Music } from '../src/engine/music.js';
import { story } from '../src/story/story.js';

test('il brano giusto per titolo, fine e scena', () => {
    const s = { music: { title: 't.mp3', game: 'g.mp3', ending: 'e.mp3' }, scenes: { a: {}, b: { music: 'b.mp3' } } };
    assert.equal(trackFor(s, { screen: 'title', scene: 'a' }), 't.mp3');
    assert.equal(trackFor(s, { screen: 'intro', scene: 'a' }), 't.mp3');
    assert.equal(trackFor(s, { screen: 'ending', scene: 'a' }), 'e.mp3');
    assert.equal(trackFor(s, { screen: 'game', scene: 'a' }), 'g.mp3');
    assert.equal(trackFor(s, { screen: 'game', scene: 'b' }), 'b.mp3');
    assert.equal(trackFor({ scenes: {} }, { screen: 'game', scene: 'x' }), null);
});

test('volume e muto', () => {
    const m = new Music({ volume: 0.5, muted: true });
    assert.equal(m.setVolume(1.4), 1);
    assert.equal(m.muted, false, 'alzare il volume toglie il muto');
    assert.equal(m.toggle(), true);
    assert.equal(m.setVolume(-1), 0);
    assert.deepEqual(m.settings(), { volume: 0, muted: true });
});

test('i brani della storia esistono', () => {
    const files = [...Object.values(story.music ?? {}), ...Object.values(story.scenes).map(s => s.music).filter(Boolean)];
    assert.ok(files.length);
    for (const f of files) assert.ok(existsSync(new URL('../' + f, import.meta.url)), `manca ${f}`);
});