/* eslint-env qunit */
import PosterImage from '../../src/js/poster-image.js';
import TestHelpers from './test-helpers.js';
import document from 'global/document';

QUnit.module('PosterImage', {
  beforeEach() {
    // Store the original background support so we can test different vals
    this.poster1 = '#poster1';
    this.poster2 = '#poster2';

    this.mockPlayer = TestHelpers.makePlayer({
      poster: this.poster1
    });
  },
  afterEach() {}
});

QUnit.test('should create and update a poster image', function(assert) {
  const posterImage = new PosterImage(this.mockPlayer);
  let pictureImg = posterImage.$('img').src;

  assert.notEqual(pictureImg.indexOf(this.poster1), -1, 'Background image used');

  // Update with a new poster source and check the new value
  this.mockPlayer.poster_ = this.poster2;
  this.mockPlayer.trigger('posterchange');
  pictureImg = posterImage.$('img').src;
  assert.notEqual(pictureImg.indexOf(this.poster2), -1, 'Background image updated');

  posterImage.dispose();
});

QUnit.test('should mirror crossOrigin', function(assert) {
  assert.strictEqual(this.mockPlayer.posterImage.$('img').crossOrigin, null, 'crossOrigin not set when not present in options');
  assert.strictEqual(this.mockPlayer.posterImage.crossOrigin(), null, 'crossOrigin not set from getter when not present in options');

  this.mockPlayer.crossOrigin('anonymous');

  assert.strictEqual(this.mockPlayer.posterImage.$('img').crossOrigin, 'anonymous', 'crossOrigin updated');
  assert.strictEqual(this.mockPlayer.posterImage.crossOrigin(), 'anonymous', 'crossOrigin getter returns updated value');

});

QUnit.test('should populate an alt attribute', function(assert) {
  const posterImage = new PosterImage(this.mockPlayer);

  assert.ok(posterImage.$('img').hasAttribute('alt'), 'img has alt atttribute');
});

QUnit.test('should remove itself from the document flow when there is no poster', function(assert) {
  const posterImage = new PosterImage(this.mockPlayer);

  assert.equal(posterImage.el().style.display, '', 'Poster image shows by default');

  // Update with an empty string
  this.mockPlayer.poster_ = '';
  this.mockPlayer.trigger('posterchange');
  assert.equal(
    posterImage.hasClass('vjs-hidden'),
    true,
    'Poster image hides with an empty source'
  );
  assert.equal(posterImage.$('img'), null, 'Poster image with no source has no img el');

  // Updated with a valid source
  this.mockPlayer.poster_ = this.poster2;
  this.mockPlayer.trigger('posterchange');
  assert.equal(
    posterImage.hasClass('vjs-hidden'),
    false,
    'Poster image shows again when there is a source'
  );
  assert.ok(posterImage.$('img'), 'Poster image with source restores img el');

  posterImage.dispose();
});

QUnit.test('should hide the poster in the appropriate player states', function(assert) {
  const posterImage = new PosterImage(this.mockPlayer);
  const playerDiv = document.createElement('div');
  const fixture = document.getElementById('qunit-fixture');
  const el = posterImage.el();

  // Remove the source so when we add to the DOM it doesn't throw an error
  // We want to poster to still think it has a real source so it doesn't hide itself
  posterImage.setSrc('');

  // Add the elements to the DOM so styles are computed
  playerDiv.appendChild(el);
  fixture.appendChild(playerDiv);

  playerDiv.className = 'video-js vjs-has-started';
  assert.equal(
    TestHelpers.getComputedStyle(el, 'display'),
    'none',
    'The poster hides when the video has started (CSS may not be loaded)'
  );

  playerDiv.className = 'video-js vjs-has-started vjs-audio';
  assert.equal(
    TestHelpers.getComputedStyle(el, 'display'),
    'block',
    'The poster continues to show when playing audio'
  );

  posterImage.dispose();
});