uppy/packages/@uppy/companion/src/server/controllers/preauth.js

const tokenService = require('../helpers/jwt')
const logger = require('../logger')

function preauth (req, res) {
  if (!req.body || !req.body.params) {
    logger.info('invalid request data received', 'preauth.bad')
    return res.sendStatus(400)
  }

  const providerConfig = req.companion.options.providerOptions[req.params.providerName]
  if (!providerConfig?.credentialsURL) {
    return res.sendStatus(501)
  }

  const preAuthToken = tokenService.generateEncryptedToken(req.body.params, req.companion.options.preAuthSecret)
  return res.json({ token: preAuthToken })
}

module.exports = preauth