onions-node/lib/create_session_middleware.js

onions-node backend

const session = require('express-session')
const connectRedis = require('connect-redis')
const redis = require('redis')
const RedisClustr = require('redis-clustr')

const createSessionStore = (redisConfig, logger) => {
  const RedisStore = connectRedis(session)
  const finalRedisConfig = redisConfig
  finalRedisConfig.legacyMode = true
  const db = parseInt(finalRedisConfig.db, 10)
  const port = parseInt(finalRedisConfig.port, 10)
  let client
  if (redisConfig.cluster) {
    client = new RedisClustr(finalRedisConfig)
  } else {
    client = redis.createClient({
      ...finalRedisConfig,
      db,
      port,
    })
  }
  return new RedisStore({
    client
  })
}

const createSessionMiddleware = (config, sessionStore, logger) => {
  const {sameSiteNone, sessionName, sessionSecret, cookieSetting, cookieMaxAge = 24 * 3600 * 1000} = config
  const creationOptions = {
    name: sessionName,
    secret: sessionSecret,
    resave: true,
    rolling: true,
    saveUninitialized: false,
    cookie: {
      maxAge: cookieMaxAge,
    },
  }

  if (sameSiteNone) {
    creationOptions.cookie = {
      ...creationOptions.cookie,
      httpOnly: true,
      secure: true,
      sameSite: 'none'
    }
  }
  if (cookieSetting) {
    creationOptions.cookie = {
      ...creationOptions.cookie,
      ...cookieSetting,
    }
  }

  if (sessionStore) {
    creationOptions.store = sessionStore
  }

  const sessionMiddleware = session(creationOptions)

  return sessionMiddleware

}

module.exports = {
  createSessionMiddleware,
  createSessionStore
}