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- <?php
- namespace Grav\Plugin\Youtube\Twig;
- use Grav\Common\GravTrait;
- class YoutubeTwigExtension extends \Twig_Extension
- {
- use GravTrait;
- /**
- * Returns extension name.
- *
- * @return string
- */
- public function getName()
- {
- return 'YoutubeTwigExtension';
- }
- /**
- * {@inheritdoc}
- */
- public function getFunctions()
- {
- return [
- new \Twig_SimpleFunction('youtube_embed_url', [$this, 'embedUrl']),
- ];
- }
- /**
- * Builds YouTube video embed URL.
- *
- * @param string $video_id
- * @param array $player_parameters
- * @param bool $privacy_enhanced_mode
- * @return string
- */
- public function embedUrl($video_id, array $player_parameters = array(), $privacy_enhanced_mode = FALSE)
- {
- $grav = static::getGrav();
- // build base video embed URL (while respecting privacy enhanced mode setting)
- $url = 'https://www.youtube' . ($privacy_enhanced_mode ? '-nocookie' : '') . '.com/embed/' . $video_id;
- // filter player parameters to only those not matching YouTube defaults
- $filtered_player_parameters = array();
- foreach ($player_parameters as $key => $value) {
- $parameter_blueprint = $grav['config']->blueprints()->get('plugins.youtube.player_parameters.' . $key);
- // configured value matches YouTube default -> skip parameter
- if (isset($parameter_blueprint['default']) && $parameter_blueprint['default'] == $value) {
- continue;
- }
- $filtered_player_parameters[$key] = $value;
- }
- // append query string (if any)
- if (!empty($filtered_player_parameters) && ($query_string = http_build_query($filtered_player_parameters))) {
- $url .= '?' . $query_string;
- }
- return $url;
- }
- }
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