field( $page_id );
				// get and store a current access token for the configured page
				$page_access_token = $this->retrieve_page_access_token( $page_id );
				$this->update_page_access_token( $page_access_token );
				$log_data[ self::OPTION_PAGE_ACCESS_TOKEN ] = sanitize_text_field( $page_access_token );
			} catch ( \Exception $e ) {
				$this->get_plugin()->log( 'Could not request Page Token: ' . $e->getMessage() );
			}
		}//end if

		$this->get_plugin()->log( 'WebHook User event saved data' );
		// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r
		$this->get_plugin()->log( print_r( $log_data, true ) );
	}


	/**
	 * Register Extras REST API endpoint
	 *
	 * @since 2.3.0
	 */
	public function init_extras_endpoint() {
		register_rest_route(
			'wc-facebook/v1',
			'extras',
			array(
				array(
					'methods'             => array( 'GET', 'POST' ),
					'callback'            => array( $this, 'extras_callback' ),
					'permission_callback' => array( $this, 'extras_permission_callback' ),
				),
			)
		);
	}


	/**
	 * FBE Extras endpoint permissions
	 *
	 * @since 2.3.0
	 *
	 * @return boolean
	 */
	public function extras_permission_callback() {
		return current_user_can( 'manage_woocommerce' );
	}


	/**
	 * Return FBE extras
	 *
	 * @since 2.3.0
	 *
	 * @return \WP_REST_Response
	 */
	public function extras_callback() {
		$extras = $this->get_connect_parameters_extras();
		if ( empty( $extras ) ) {
			return new \WP_REST_Response( null, 204 );
		}
		return new \WP_REST_Response( $extras, 200 );
	}


	/**
	 * Process FBE App Store login flow redirection
	 *
	 * @since 2.3.0
	 */
	public function handle_fbe_redirect() {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_die( esc_html__( 'You do not have permission to finish App Store login.', 'facebook-for-woocommerce' ) );
		}

		$redirect_uri = isset( $_REQUEST['redirect_uri'] ) ? base64_decode( wc_clean( wp_unslash( $_REQUEST['redirect_uri'] ) ) ) : ''; //phpcs:ignore
		// To ensure that we are not sharing any user data with other parties, only redirect to the
		// redirect_uri if its parsed host matches a known Meta host used by this flow.
		$host         = strtolower( (string) wp_parse_url( $redirect_uri, PHP_URL_HOST ) );
		$scheme       = strtolower( (string) wp_parse_url( $redirect_uri, PHP_URL_SCHEME ) );
		$host_allowed = 'https' === $scheme && 1 === preg_match(
			'/^(?:(?:www|m|l)\.)?(?:\d{5}\.od\.)?(?:facebook|instagram|whatsapp|commercepartnerhub)\.com$/',
			$host
		);

		if ( empty( $redirect_uri ) || ! $host_allowed ) {
			wp_safe_redirect( site_url() );
			exit;
		}

		if ( empty( $_REQUEST['success'] ) ) { //phpcs:ignore WordPress.Security.NonceVerification.Recommended
			$url_params   = array(
				'store_url'    => '',
				'redirect_uri' => rawurlencode( $redirect_uri ),
				'errors'       => array( 'You need to grant access to WooCommerce.' ),
			);
			$redirect_url = add_query_arg(
				$url_params,
				$this->get_app_store_login_url()
			);
		} else {
			$redirect_url = $redirect_uri . '&extras=' . rawurlencode_deep( wp_json_encode( $this->get_connect_parameters_extras() ) );
		}

		// $redirect_url now points either to a Meta domain (validated above) or to the trusted App
		// Store login URL. Register its host so the core safe-redirect guarantee is enforced for this
		// otherwise cross-domain redirect.
		$redirect_host  = strtolower( (string) wp_parse_url( $redirect_url, PHP_URL_HOST ) );
		$allow_redirect = static function ( $hosts ) use ( $redirect_host ) {
			$hosts[] = $redirect_host;
			return $hosts;
		};

		add_filter( 'allowed_redirect_hosts', $allow_redirect );
		wp_safe_redirect( $redirect_url );
		remove_filter( 'allowed_redirect_hosts', $allow_redirect );
		exit;
	}

	/**
	 * Stores the given Commerce Partner Integration ID.
	 *
	 * @since 3.4.
	 *
	 * @param string $id the ID
	 */
	public function update_commerce_partner_integration_id( $id ) {
		update_option( self::OPTION_COMMERCE_PARTNER_INTEGRATION_ID, $id );
	}
}