server/helpers/utils.ts

   1 import * as express from 'express'
   2 import { Model } from 'sequelize-typescript'
   3 import { ResultList } from '../../shared'
   4 import { VideoResolution } from '../../shared/models/videos'
   5 import { CONFIG } from '../initializers'
   6 import { AccountModel } from '../models/account/account'
   7 import { UserModel } from '../models/account/user'
   8 import { pseudoRandomBytesPromise } from './core-utils'
   9 import { logger } from './logger'
  10
  11 function badRequest (req: express.Request, res: express.Response, next: express.NextFunction) {
  12   return res.type('json').status(400).end()
  13 }
  14
  15 async function generateRandomString (size: number) {
  16   const raw = await pseudoRandomBytesPromise(size)
  17
  18   return raw.toString('hex')
  19 }
  20
  21 interface FormattableToJSON {
  22   toFormattedJSON ()
  23 }
  24
  25 function getFormattedObjects<U, T extends FormattableToJSON> (objects: T[], objectsTotal: number) {
  26   const formattedObjects: U[] = []
  27
  28   objects.forEach(object => {
  29     formattedObjects.push(object.toFormattedJSON())
  30   })
  31
  32   const res: ResultList<U> = {
  33     total: objectsTotal,
  34     data: formattedObjects
  35   }
  36
  37   return res
  38 }
  39
  40 async function isSignupAllowed () {
  41   if (CONFIG.SIGNUP.ENABLED === false) {
  42     return false
  43   }
  44
  45   // No limit and signup is enabled
  46   if (CONFIG.SIGNUP.LIMIT === -1) {
  47     return true
  48   }
  49
  50   const totalUsers = await UserModel.countTotal()
  51
  52   return totalUsers < CONFIG.SIGNUP.LIMIT
  53 }
  54
  55 function computeResolutionsToTranscode (videoFileHeight: number) {
  56   const resolutionsEnabled: number[] = []
  57   const configResolutions = CONFIG.TRANSCODING.RESOLUTIONS
  58
  59   const resolutions = [
  60     VideoResolution.H_240P,
  61     VideoResolution.H_360P,
  62     VideoResolution.H_480P,
  63     VideoResolution.H_720P,
  64     VideoResolution.H_1080P
  65   ]
  66
  67   for (const resolution of resolutions) {
  68     if (configResolutions[resolution.toString()] === true && videoFileHeight > resolution) {
  69       resolutionsEnabled.push(resolution)
  70     }
  71   }
  72
  73   return resolutionsEnabled
  74 }
  75
  76 function resetSequelizeInstance (instance: Model<any>, savedFields: object) {
  77   Object.keys(savedFields).forEach(key => {
  78     const value = savedFields[key]
  79     instance.set(key, value)
  80   })
  81 }
  82
  83 let serverAccount: AccountModel
  84 async function getServerAccount () {
  85   if (serverAccount === undefined) {
  86     serverAccount = await AccountModel.loadApplication()
  87   }
  88
  89   if (!serverAccount) {
  90     logger.error('Cannot load server account.')
  91     process.exit(0)
  92   }
  93
  94   return Promise.resolve(serverAccount)
  95 }
  96
  97 type SortType = { sortModel: any, sortValue: string }
  98
  99 // ---------------------------------------------------------------------------
 100
 101 export {
 102   badRequest,
 103   generateRandomString,
 104   getFormattedObjects,
 105   isSignupAllowed,
 106   computeResolutionsToTranscode,
 107   resetSequelizeInstance,
 108   getServerAccount,
 109   SortType
 110 }