public static function init() {
		self::$theme_support = current_theme_supports( 'woocommerce' );
		self::$shop_page_id  = wc_get_page_id( 'shop' );

		// Supported themes.
		if ( self::$theme_support ) {
			add_filter( 'template_include', array( __CLASS__, 'template_loader' ) );
			add_filter( 'comments_template', array( __CLASS__, 'comments_template_loader' ) );
		} else {
			// Unsupported themes.
			add_action( 'template_redirect', array( __CLASS__, 'unsupported_theme_init' ) );
		}
	}