<?php
/**
 * Feature loader.
 *
 * @package OvanapAdminToolkit
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Loads and executes enabled features.
 */
class OVKIT_Feature_Loader {

	/**
	 * Singleton instance.
	 *
	 * @var self|null
	 */
	private static $instance = null;

	/**
	 * Instance.
	 *
	 * @return self
	 */
	public static function instance(): self {
		if ( ! self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Fire the callback for each enabled feature.
	 */
	public function load_enabled(): void {
		$features = OVKIT_Feature_Registry::instance()->get_all();
		$loaded   = array();

		foreach ( $features as $key => $def ) {
			if ( ! ovkit_is_enabled( $key ) ) {
				continue;
			}
			if ( ! empty( $def['callback'] ) && is_callable( $def['callback'] ) ) {
				call_user_func( $def['callback'] );
				$loaded[] = $key;
			}
		}

		if ( ! empty( $loaded ) ) {
			ovkit_log( 'Features loaded: ' . implode( ', ', $loaded ) );
		}
	}
}