import logger from '../utils/logger'
import dbtools from '../utils/dbtools'
import cookie from 'cookie'

interface Options {
  userDB: any
}

export default function (options: Options): any {
  const { userDB } = options

  return function (socket, next) {
    const cookies = cookie.parse(socket.handshake.headers.cookie)
    const sessionID = cookies.sessionID

    if (process.env.NS_NOUSER) {
      next()
      return
    }

    if (!sessionID) {
      next(new Error('Authentication error'))
      return
    }

    const user = GetUserBySessionID(userDB, sessionID)

    if (!user) {
      next(new Error('Authentication error'))
      return
    }
    next()
  }
}

function GetUserBySessionID(db: any, sessionID: string) {
  logger.DebugLog(`Getting user from db`, 'auth', 2)

  const session = dbtools.Select(db, 'sessions', {
    id: sessionID,
  })[0]

  if (!session) {
    return
  }

  const user = dbtools.Select(db, 'users', {
    id: session.userID,
  })[0]

  if (user) {
    return user
  }
}