server/helpers/utils.ts

   1 import { Model } from 'sequelize-typescript'
   2 import { ResultList } from '../../shared'
   3 import { VideoResolution } from '../../shared/models/videos'
   4 import { CONFIG } from '../initializers'
   5 import { UserModel } from '../models/account/user'
   6 import { ActorModel } from '../models/activitypub/actor'
   7 import { ApplicationModel } from '../models/application/application'
   8 import { pseudoRandomBytesPromise } from './core-utils'
   9 import { logger } from './logger'
  10
  11 async function generateRandomString (size: number) {
  12   const raw = await pseudoRandomBytesPromise(size)
  13
  14   return raw.toString('hex')
  15 }
  16
  17 interface FormattableToJSON {
  18   toFormattedJSON ()
  19 }
  20
  21 function getFormattedObjects<U, T extends FormattableToJSON> (objects: T[], objectsTotal: number) {
  22   const formattedObjects: U[] = []
  23
  24   objects.forEach(object => {
  25     formattedObjects.push(object.toFormattedJSON())
  26   })
  27
  28   const res: ResultList<U> = {
  29     total: objectsTotal,
  30     data: formattedObjects
  31   }
  32
  33   return res
  34 }
  35
  36 async function isSignupAllowed () {
  37   if (CONFIG.SIGNUP.ENABLED === false) {
  38     return false
  39   }
  40
  41   // No limit and signup is enabled
  42   if (CONFIG.SIGNUP.LIMIT === -1) {
  43     return true
  44   }
  45
  46   const totalUsers = await UserModel.countTotal()
  47
  48   return totalUsers < CONFIG.SIGNUP.LIMIT
  49 }
  50
  51 function computeResolutionsToTranscode (videoFileHeight: number) {
  52   const resolutionsEnabled: number[] = []
  53   const configResolutions = CONFIG.TRANSCODING.RESOLUTIONS
  54
  55   const resolutions = [
  56     VideoResolution.H_240P,
  57     VideoResolution.H_360P,
  58     VideoResolution.H_480P,
  59     VideoResolution.H_720P,
  60     VideoResolution.H_1080P
  61   ]
  62
  63   for (const resolution of resolutions) {
  64     if (configResolutions[resolution + 'p'] === true && videoFileHeight > resolution) {
  65       resolutionsEnabled.push(resolution)
  66     }
  67   }
  68
  69   return resolutionsEnabled
  70 }
  71
  72 function resetSequelizeInstance (instance: Model<any>, savedFields: object) {
  73   Object.keys(savedFields).forEach(key => {
  74     const value = savedFields[key]
  75     instance.set(key, value)
  76   })
  77 }
  78
  79 let serverActor: ActorModel
  80 async function getServerActor () {
  81   if (serverActor === undefined) {
  82     const application = await ApplicationModel.load()
  83     serverActor = application.Account.Actor
  84   }
  85
  86   if (!serverActor) {
  87     logger.error('Cannot load server actor.')
  88     process.exit(0)
  89   }
  90
  91   return Promise.resolve(serverActor)
  92 }
  93
  94 type SortType = { sortModel: any, sortValue: string }
  95
  96 // ---------------------------------------------------------------------------
  97
  98 export {
  99   generateRandomString,
 100   getFormattedObjects,
 101   isSignupAllowed,
 102   computeResolutionsToTranscode,
 103   resetSequelizeInstance,
 104   getServerActor,
 105   SortType
 106 }