@fontoxml/fontoxml-development-tools/src/modules/editor/dev-cms/configureScopeMiddleware.js

Development tools for Fonto.

import express from 'express';
import { v4 as uuid } from 'uuid';

/** @typedef {import('../src/getAppConfig.js').DevCmsConfig} DevCmsConfig */

/**
 * Scope middleware for checking the query parameter if it contains ?scope.
 *
 * @param  {DevCmsConfig}  config
 */
export default (config) => {
	// eslint-disable-next-line new-cap
	const router = express.Router();

	router.route('/').get((req, res, next) => {
		let scope = config.scope;

		if (req.query.scope) {
			scope = JSON.parse(req.query.scope);
			if (
				req.hasFontoSession(scope) &&
				config.alwaysRegenerateSessionToken
			) {
				// We must re-generate a session
				scope = Object.assign(scope, { editSessionToken: uuid() });
				res.redirect(
					`?scope=${encodeURIComponent(JSON.stringify(scope))}`
				);
				// Actually create the session after the redirect
				return;
			}

			if (scope.editSessionToken) {
				req.ensureFontoSession(scope);
				next();
				return;
			}
		}

		// No edit session token, start a new session
		scope = { editSessionToken: uuid(), ...scope };
		res.redirect(`?scope=${encodeURIComponent(JSON.stringify(scope))}`);
	});

	return router;
};