Hooks::init()

	public function init()
	{
		// add some helpful missing hooks
		add_action('ld_group_postdata_updated', [$this, 'groupUpdated']);
		add_action('before_delete_post', [$this, 'groupDeleting']);

		// backward compet, we check the meta instead of using hook (hook not consistant)
		add_action('update_user_meta', [$this, 'checkLearndashGroupUpdateMeta'], 10, 4);
		add_action('added_user_meta', [$this, 'checkLearndashGroupUpdateMeta'], 10, 4);
		add_action('deleted_user_meta', [$this, 'checkLearndashGroupDeleteMeta'], 10, 4);

		add_action('update_post_meta', [$this, 'checkLearndashCourseUpdateMeta'], 10, 4);
		add_action('added_post_meta', [$this, 'checkLearndashCourseUpdateMeta'], 10, 4);
		add_action('deleted_post_meta', [$this, 'checkLearndashCourseDeleteMeta'], 10, 4);
	}