const { test } = require('node:test');
const assert = require('node:assert/strict');
const DownloadsPage = require('./downloads-page.js');

test('groupJobs categorizes active, queued, paused, and failed jobs correctly', () => {
  const jobs = [
    { id: '1', title: 'Job 1', status: 'active' },
    { id: '2', title: 'Job 2', status: 'queued' },
    { id: '3', title: 'Job 3', status: 'paused' },
    { id: '4', title: 'Job 4', status: 'failed', error: 'Network error' }
  ];
  const groups = DownloadsPage.groupJobs(jobs);
  assert.equal(groups.active.length, 1);
  assert.equal(groups.queued.length, 1);
  assert.equal(groups.paused.length, 1);
  assert.equal(groups.failed.length, 1);
  assert.equal(groups.active[0].id, '1');
  assert.equal(groups.failed[0].error, 'Network error');
});

test('formatJobStatus produces plain text labels without emojis for all job states', () => {
  assert.equal(DownloadsPage.formatJobStatus({ status: 'failed', error: 'Connection lost' }), 'Failed: Connection lost');
  assert.equal(DownloadsPage.formatJobStatus({ status: 'failed' }), 'Save failed');
  assert.equal(DownloadsPage.formatJobStatus({ status: 'paused' }), 'Paused — resume when you’re ready');
  assert.equal(DownloadsPage.formatJobStatus({ status: 'queued' }), 'Waiting for a free slot…');
  assert.equal(
    DownloadsPage.formatJobStatus({ status: 'active', progress: { received: 10485760, total: 52428800 } }),
    '10.0 / 50.0 MB'
  );
  assert.equal(
    DownloadsPage.formatJobStatus({ status: 'active', progress: { phase: 'preparing', elapsed: 3000 } }),
    'Preparing on server… 3 s'
  );
  assert.equal(DownloadsPage.formatJobStatus({ status: 'active', progress: { phase: 'verifying' } }), 'Verifying…');
  assert.equal(DownloadsPage.formatJobStatus({ status: 'active' }), 'Saving for offline…');
});

test('bytes formatting handles bytes, MB, GB and invalid input safely', () => {
  assert.equal(DownloadsPage.bytes(0), '0 MB');
  assert.equal(DownloadsPage.bytes(10485760), '10.0 MB');
  assert.equal(DownloadsPage.bytes(1073741824), '1.0 GB');
  assert.equal(DownloadsPage.bytes(-100), '0 MB');
  assert.equal(DownloadsPage.bytes(null), '0 MB');
});

test('escapeHtml escapes dangerous HTML characters', () => {
  assert.equal(DownloadsPage.escapeHtml('<script>alert("xss")</script>'), '&lt;script&gt;alert(&quot;xss&quot;)&lt;/script&gt;');
  assert.equal(DownloadsPage.escapeHtml('Tom & Jerry'), 'Tom &amp; Jerry');
});