tracker/api-js/src/on-connect.js at queue-json-encoding · simrit1/tracker · GitHub

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export const customOnConnect =
  ({
    context,
    createI18n,
    verifyToken,
    userRequired,
    loadUserByKey,
    verifiedRequired,
  }) =>
  async (connectionParams, webSocket) => {
    const enLangPos = String(
      webSocket.upgradeReq.headers['accept-language'],
    ).indexOf('en')
    const frLangPos = String(
      webSocket.upgradeReq.headers['accept-language'],
    ).indexOf('fr')

    let language = 'en'
    if (frLangPos > enLangPos) {
      language = 'fr'
    }

    let authorization
    if (connectionParams.authorization) {
      authorization = connectionParams.authorization
    }

    const i18n = createI18n(language)
    const verify = verifyToken({ i18n })
    const token = authorization || ''

    let userKey
    if (token !== '') {
      userKey = verify({ token }).userKey
    }

    const { query } = context

    const user = await userRequired({
      i18n,
      userKey,
      loadUserByKey: loadUserByKey({ query, userKey }),
    })()

    verifiedRequired({ user })

    console.info(`User: ${userKey}, connected to subscription.`)

    return {
      language,
      authorization,
    }
  }