shared/extra-utils/miscs/miscs.ts

   1 /* tslint:disable:no-unused-expression */
   2
   3 import * as chai from 'chai'
   4 import { basename, isAbsolute, join, resolve } from 'path'
   5 import * as request from 'supertest'
   6 import * as WebTorrent from 'webtorrent'
   7 import { pathExists, readFile } from 'fs-extra'
   8 import * as ffmpeg from 'fluent-ffmpeg'
   9
  10 const expect = chai.expect
  11 let webtorrent: WebTorrent.Instance
  12
  13 function immutableAssign <T, U> (target: T, source: U) {
  14   return Object.assign<{}, T, U>({}, target, source)
  15 }
  16
  17   // Default interval -> 5 minutes
  18 function dateIsValid (dateString: string, interval = 300000) {
  19   const dateToCheck = new Date(dateString)
  20   const now = new Date()
  21
  22   return Math.abs(now.getTime() - dateToCheck.getTime()) <= interval
  23 }
  24
  25 function wait (milliseconds: number) {
  26   return new Promise(resolve => setTimeout(resolve, milliseconds))
  27 }
  28
  29 function webtorrentAdd (torrent: string, refreshWebTorrent = false) {
  30   const WebTorrent = require('webtorrent')
  31
  32   if (!webtorrent) webtorrent = new WebTorrent()
  33   if (refreshWebTorrent === true) webtorrent = new WebTorrent()
  34
  35   return new Promise<WebTorrent.Torrent>(res => webtorrent.add(torrent, res))
  36 }
  37
  38 function root () {
  39   // We are in /miscs
  40   let root = join(__dirname, '..', '..', '..')
  41
  42   if (basename(root) === 'dist') root = resolve(root, '..')
  43
  44   return root
  45 }
  46
  47 async function testImage (url: string, imageName: string, imagePath: string, extension = '.jpg') {
  48   const res = await request(url)
  49     .get(imagePath)
  50     .expect(200)
  51
  52   const body = res.body
  53
  54   const data = await readFile(join(root(), 'server', 'tests', 'fixtures', imageName + extension))
  55   const minLength = body.length - ((20 * body.length) / 100)
  56   const maxLength = body.length + ((20 * body.length) / 100)
  57
  58   expect(data.length).to.be.above(minLength)
  59   expect(data.length).to.be.below(maxLength)
  60 }
  61
  62 function buildAbsoluteFixturePath (path: string, customTravisPath = false) {
  63   if (isAbsolute(path)) {
  64     return path
  65   }
  66
  67   if (customTravisPath && process.env.TRAVIS) return join(process.env.HOME, 'fixtures', path)
  68
  69   return join(root(), 'server', 'tests', 'fixtures', path)
  70 }
  71
  72 async function generateHighBitrateVideo () {
  73   const tempFixturePath = buildAbsoluteFixturePath('video_high_bitrate_1080p.mp4', true)
  74
  75   const exists = await pathExists(tempFixturePath)
  76   if (!exists) {
  77
  78     // Generate a random, high bitrate video on the fly, so we don't have to include
  79     // a large file in the repo. The video needs to have a certain minimum length so
  80     // that FFmpeg properly applies bitrate limits.
  81     // https://stackoverflow.com/a/15795112
  82     return new Promise<string>(async (res, rej) => {
  83       ffmpeg()
  84         .outputOptions([ '-f rawvideo', '-video_size 1920x1080', '-i /dev/urandom' ])
  85         .outputOptions([ '-ac 2', '-f s16le', '-i /dev/urandom', '-t 10' ])
  86         .outputOptions([ '-maxrate 10M', '-bufsize 10M' ])
  87         .output(tempFixturePath)
  88         .on('error', rej)
  89         .on('end', () => res(tempFixturePath))
  90         .run()
  91     })
  92   }
  93
  94   return tempFixturePath
  95 }
  96
  97 // ---------------------------------------------------------------------------
  98
  99 export {
 100   dateIsValid,
 101   wait,
 102   webtorrentAdd,
 103   immutableAssign,
 104   testImage,
 105   buildAbsoluteFixturePath,
 106   root,
 107   generateHighBitrateVideo
 108 }