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<?php
declare(strict_types=1);

namespace WP_Rocket\Engine\Media\AboveTheFold\Frontend;

use WP_Rocket\Event_Management\Subscriber_Interface;

class Subscriber implements Subscriber_Interface {
	/**
	 * Controller instance
	 *
	 * @var Controller
	 */
	private $controller;

	/**
	 * Constructor
	 *
	 * @param Controller $controller Controller instance.
	 */
	public function __construct( Controller $controller ) {
		$this->controller = $controller;
	}

	/**
	 * Array of events to listen to
	 *
	 * @return array
	 */
	public static function get_subscribed_events() {
		return [
			'rocket_lazyload_excluded_src' => 'add_exclusions',
		];
	}

	/**
	 * Add above the fold images to lazyload exclusions
	 *
	 * @param array $exclusions Array of excluded patterns.
	 *
	 * @return array
	 */
	public function add_exclusions( $exclusions ): array {
		return $this->controller->add_exclusions( $exclusions );
	}
}