public function handle_rest_api_requests() {
		global $wp;

		if ( ! empty( $_GET['wc-api-version'] ) ) {
			$wp->query_vars['wc-api-version'] = $_GET['wc-api-version'];
		}

		if ( ! empty( $_GET['wc-api-route'] ) ) {
			$wp->query_vars['wc-api-route'] = $_GET['wc-api-route'];
		}

		// REST API request.
		if ( ! empty( $wp->query_vars['wc-api-version'] ) && ! empty( $wp->query_vars['wc-api-route'] ) ) {

			wc_maybe_define_constant( 'WC_API_REQUEST', true );
			wc_maybe_define_constant( 'WC_API_REQUEST_VERSION', absint( $wp->query_vars['wc-api-version'] ) );

			// Legacy v1 API request.
			if ( 1 === WC_API_REQUEST_VERSION ) {
				$this->handle_v1_rest_api_request();
			} elseif ( 2 === WC_API_REQUEST_VERSION ) {
				$this->handle_v2_rest_api_request();
			} else {
				$this->includes();

				$this->server = new WC_API_Server( $wp->query_vars['wc-api-route'] );

				// load API resource classes.
				$this->register_resources( $this->server );

				// Fire off the request.
				$this->server->serve_request();
			}

			exit;
		}
	}