cn007b / log

const express = require('express');

const router = express.Router();

/**

 * Homepage route, which will redirect to page with random stream id.

 *

 * @param {Object} req HTTP request.

 * @param {Object} res HTTP response.

 */

router.get('/', (req, res) => {

  const streamId = Math.random().toString(36).substring(2);

  res.redirect(`/${streamId}`);

});

/**

 * Stream page route. Renders web page for particular stream id.

 *

 * @param {Object} req HTTP request.

 * @param {Object} res HTTP response.

 */

router.get('/:streamId?', (req, res) => {

  res.render('index', {

    hostName: global.APP_HOST_NAME,

    host: global.APP_HOST,

    port: global.APP_PORT_FOR_HELP_BLOCK,

    socketIoJs: global.APP_SOCKET_IO_JS,

    streamId: req.params.streamId,

    sentryDSN: global.SENTRY_DSN_FRONTEND,

    googleAnalyticsId: global.GOOGLE_ANALYTICS_ID,

  });

});

/**

 * Post message into page with particular stream id.

 *

 * @emits LOG.NEW

 *

 * @param {Object} req HTTP request.

 * @param {Object} res HTTP response.

 */

router.post('/:streamId?', (req, res) => {

  // Capture message sender ip address as additional information.

  const ip = req.headers['x-forwarded-for']

    || req.connection.remoteAddress

    || req.socket.remoteAddress

    || req.connection.socket.remoteAddress;

  // Emit WebSocket event.

  if (req.headers['content-type'] === 'application/json') {

    // Socket.io rooms disabled here because rooms provide restricted behavior,

    // for example: it is impossible to open in one browser two or three different streams (rooms).

    global.socket.emit('log', {

      streamId: req.params.streamId, format: 'json', data: req.body, ip,

    });

  }

  // No need to provide any payload, just empty body and success status code.

  res.status(204);

  res.send('');

});

module.exports = router;