server/helpers/utils.ts

   1 import * as express from 'express'
   2 import * as Promise from 'bluebird'
   3
   4 import { pseudoRandomBytesPromise } from './core-utils'
   5 import { CONFIG, database as db } from '../initializers'
   6 import { ResultList } from '../../shared'
   7
   8 function badRequest (req: express.Request, res: express.Response, next: express.NextFunction) {
   9   res.type('json').status(400).end()
  10 }
  11
  12 function generateRandomString (size: number) {
  13   return pseudoRandomBytesPromise(size).then(raw => raw.toString('hex'))
  14 }
  15
  16 interface FormatableToJSON {
  17   toFormatedJSON ()
  18 }
  19
  20 function getFormatedObjects<U, T extends FormatableToJSON> (objects: T[], objectsTotal: number) {
  21   const formatedObjects: U[] = []
  22
  23   objects.forEach(object => {
  24     formatedObjects.push(object.toFormatedJSON())
  25   })
  26
  27   const res: ResultList<U> = {
  28     total: objectsTotal,
  29     data: formatedObjects
  30   }
  31
  32   return res
  33 }
  34
  35 function isSignupAllowed () {
  36   if (CONFIG.SIGNUP.ENABLED === false) {
  37     return Promise.resolve(false)
  38   }
  39
  40   // No limit and signup is enabled
  41   if (CONFIG.SIGNUP.LIMIT === -1) {
  42     return Promise.resolve(true)
  43   }
  44
  45   return db.User.countTotal().then(totalUsers => {
  46     return totalUsers < CONFIG.SIGNUP.LIMIT
  47   })
  48 }
  49
  50 // ---------------------------------------------------------------------------
  51
  52 export {
  53   badRequest,
  54   generateRandomString,
  55   getFormatedObjects,
  56   isSignupAllowed
  57 }