@swell/cli/dist/lib/sessions.js

Swell's command line interface/utility

import { ux } from '@oclif/core';
import * as http from 'node:http';
import open from 'open';
import { getLoginHost } from './constants.js';
import style from './style.js';
/**
 * Get the session id for the passed in store. If the session is not found,
 * open the browser to login and return the session id.
 *
 * @param storeId - The store to get the session id for
 * @returns A promise that resolves to the session id
 */
function getSessionIdOrLoginInBrowser(storeId) {
    return new Promise((resolve, _reject) => {
        const onSessionId = (sessionId, storeId) => resolve([sessionId, storeId]);
        createServer(onSessionId, storeId);
    });
}
function createServer(onSessionId, storeId) {
    // the spinner is used to show progress while waiting for the browser
    const spinner = ux.action;
    serverForLogin({
        onPost(req) {
            // we received the session id from the browser so we can move on
            const sessionId = req.headers['x-session'];
            const storeId = req.headers['x-store'];
            if (sessionId) {
                spinner.stop('Browser authentication successful');
                onSessionId(sessionId, storeId);
            }
        },
        async onStart(loginUrl) {
            spinner.start([
                "Open this link if your browser doesn't launch it automatically:",
                `${style.link(loginUrl)}`,
            ].join(' '));
            await open(loginUrl);
        },
        storeId,
    });
}
/**
 * Start a local HTTP server to handle the POST and GET requests from the
 * browser login flow.
 *
 * The POST request will contain the session id in the `x-session` header.
 *
 * The GET request will be used to close the connection after the login flow
 * is complete.
 *
 * @param onSessionId - A callback to run when the session id is received
 * from the browser
 * @returns void
 */
function serverForLogin({ onPost, onStart, storeId, }) {
    // flag to track if the POST and GET requests have been handled
    // we only want to handle them once
    let postHandled = false;
    let getHandled = false;
    // Create the HTTP server
    const server = http.createServer(async (req, res) => {
        // Set CORS headers
        res.setHeader('Access-Control-Allow-Origin', getLoginHost(storeId));
        res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
        res.setHeader('Access-Control-Allow-Headers', 'Origin, Content-Type, x-session, x-store');
        if (req.method === 'POST' && !postHandled) {
            onPost(req);
            res.statusCode = 200;
            res.setHeader('Content-Type', 'text/plain');
            res.end('POST request handled');
            postHandled = true;
        }
        else if (req.method === 'GET' && !getHandled) {
            res.statusCode = 200;
            res.setHeader('Content-Type', 'text/plain');
            // Close the HTTP connection to prevent `server.close()` from hanging
            res.setHeader('connection', 'close');
            // The browser will show this message in the window
            res.end('Authentication successful, you can close this window and return to the terminal.');
            getHandled = true;
        }
        else if (req.method === 'OPTIONS') {
            res.statusCode = 200;
            res.setHeader('Content-Type', 'text/plain');
            res.end('ok');
        }
        else {
            // Return 404 for subsequent requests or other request types
            res.statusCode = 404;
            res.end('Not Found');
        }
    });
    server.listen(0, '127.0.0.1', async () => {
        const serverAddr = server.address();
        // the port will be dynamically assigned, one of the available ports
        const localServerUrl = Buffer.from(`http://${serverAddr.address}:${serverAddr.port}/`).toString('base64');
        const loginUrl = `${getLoginHost(storeId)}/admin?cli=${localServerUrl}`;
        onStart(loginUrl);
    });
    const closeInterval = setInterval(() => {
        if (postHandled) {
            server.close(() => {
                clearInterval(closeInterval);
            });
            server.emit('close');
            server.removeAllListeners('close');
        }
    }, 100);
}
export { getSessionIdOrLoginInBrowser };