const test = require('node:test');
const assert = require('node:assert');
const { buildTitleKeywords } = require('../lib/ytdlp.js');

// The keywords become `title ~= (?i)<kw>` match-filters in yt-dlp, i.e. every keyword must match
// the candidate title case-insensitively. This mirrors that check.
const accepts = (title, candidate) =>
  buildTitleKeywords(title).every(kw => new RegExp(kw, 'i').test(candidate));

test('a number in the title is always required, however short', () => {
  const kws = buildTitleKeywords('700 Main Street');
  assert.ok(kws.some(k => k.includes('700')), `700 fehlt in ${JSON.stringify(kws)}`);
});

test('rejects a same-shaped title with a different number', () => {
  // The real regression: "777 Main Street" (Release - Topic) was downloaded for DAT ADAM's
  // "700 Main Street", because only the two longest words (Street, Main) were required.
  assert.equal(accepts('700 Main Street', '777 Main Street'), false);
  assert.equal(accepts('700 Main Street', '700 Main Street'), true);
});

test('accepts the abbreviated spelling uploaders use', () => {
  assert.equal(accepts('700 Main Street', '700 Main st (cr-Version)'), true);
  assert.equal(accepts('700 Main Street', 'DAT ADAM - 700 Main St [FULL SONG]'), true);
});

test('the abbreviation does not match inside another word', () => {
  assert.equal(accepts('700 Main Street', '700 Main Stuff'), false);
});

test('titles without numbers keep the previous two-longest-words behaviour', () => {
  assert.deepEqual(buildTitleKeywords('Bohemian Rhapsody'), ['Bohemian', 'Rhapsody']);
  assert.equal(accepts('Bohemian Rhapsody', 'Queen - Bohemian Rhapsody (Official Video)'), true);
  assert.equal(accepts('Bohemian Rhapsody', 'Queen - Another One Bites The Dust'), false);
});