shared/extra-utils/miscs/miscs.ts

   1 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
   2
   3 import * as chai from 'chai'
   4 import * as ffmpeg from 'fluent-ffmpeg'
   5 import { ensureDir, pathExists, readFile, stat } from 'fs-extra'
   6 import { basename, dirname, isAbsolute, join, resolve } from 'path'
   7 import * as request from 'supertest'
   8 import * as WebTorrent from 'webtorrent'
   9 import { HttpStatusCode } from '../../../shared/core-utils/miscs/http-error-codes'
  10
  11 const expect = chai.expect
  12 let webtorrent: WebTorrent.Instance
  13
  14 function immutableAssign<T, U> (target: T, source: U) {
  15   return Object.assign<{}, T, U>({}, target, source)
  16 }
  17
  18 // Default interval -> 5 minutes
  19 function dateIsValid (dateString: string, interval = 300000) {
  20   const dateToCheck = new Date(dateString)
  21   const now = new Date()
  22
  23   return Math.abs(now.getTime() - dateToCheck.getTime()) <= interval
  24 }
  25
  26 function wait (milliseconds: number) {
  27   return new Promise(resolve => setTimeout(resolve, milliseconds))
  28 }
  29
  30 function webtorrentAdd (torrent: string, refreshWebTorrent = false) {
  31   const WebTorrent = require('webtorrent')
  32
  33   if (!webtorrent) webtorrent = new WebTorrent()
  34   if (refreshWebTorrent === true) webtorrent = new WebTorrent()
  35
  36   return new Promise<WebTorrent.Torrent>(res => webtorrent.add(torrent, res))
  37 }
  38
  39 function root () {
  40   // We are in /miscs
  41   let root = join(__dirname, '..', '..', '..')
  42
  43   if (basename(root) === 'dist') root = resolve(root, '..')
  44
  45   return root
  46 }
  47
  48 function buildServerDirectory (server: { internalServerNumber: number }, directory: string) {
  49   return join(root(), 'test' + server.internalServerNumber, directory)
  50 }
  51
  52 async function testImage (url: string, imageName: string, imagePath: string, extension = '.jpg') {
  53   const res = await request(url)
  54     .get(imagePath)
  55     .expect(HttpStatusCode.OK_200)
  56
  57   const body = res.body
  58
  59   const data = await readFile(join(root(), 'server', 'tests', 'fixtures', imageName + extension))
  60   const minLength = body.length - ((30 * body.length) / 100)
  61   const maxLength = body.length + ((30 * body.length) / 100)
  62
  63   expect(data.length).to.be.above(minLength, "the generated image is way smaller than the recorded fixture")
  64   expect(data.length).to.be.below(maxLength, "the generated image is way larger than the recorded fixture")
  65 }
  66
  67 function isGithubCI () {
  68   return !!process.env.GITHUB_WORKSPACE
  69 }
  70
  71 function buildAbsoluteFixturePath (path: string, customCIPath = false) {
  72   if (isAbsolute(path)) return path
  73
  74   if (customCIPath && process.env.GITHUB_WORKSPACE) {
  75     return join(process.env.GITHUB_WORKSPACE, 'fixtures', path)
  76   }
  77
  78   return join(root(), 'server', 'tests', 'fixtures', path)
  79 }
  80
  81 function areHttpImportTestsDisabled () {
  82   const disabled = process.env.DISABLE_HTTP_IMPORT_TESTS === 'true'
  83
  84   if (disabled) console.log('Import tests are disabled')
  85
  86   return disabled
  87 }
  88
  89 async function generateHighBitrateVideo () {
  90   const tempFixturePath = buildAbsoluteFixturePath('video_high_bitrate_1080p.mp4', true)
  91
  92   await ensureDir(dirname(tempFixturePath))
  93
  94   const exists = await pathExists(tempFixturePath)
  95   if (!exists) {
  96     console.log('Generating high bitrate video.')
  97
  98     // Generate a random, high bitrate video on the fly, so we don't have to include
  99     // a large file in the repo. The video needs to have a certain minimum length so
 100     // that FFmpeg properly applies bitrate limits.
 101     // https://stackoverflow.com/a/15795112
 102     return new Promise<string>((res, rej) => {
 103       ffmpeg()
 104         .outputOptions([ '-f rawvideo', '-video_size 1920x1080', '-i /dev/urandom' ])
 105         .outputOptions([ '-ac 2', '-f s16le', '-i /dev/urandom', '-t 10' ])
 106         .outputOptions([ '-maxrate 10M', '-bufsize 10M' ])
 107         .output(tempFixturePath)
 108         .on('error', rej)
 109         .on('end', () => res(tempFixturePath))
 110         .run()
 111     })
 112   }
 113
 114   return tempFixturePath
 115 }
 116
 117 async function generateVideoWithFramerate (fps = 60) {
 118   const tempFixturePath = buildAbsoluteFixturePath(`video_${fps}fps.mp4`, true)
 119
 120   await ensureDir(dirname(tempFixturePath))
 121
 122   const exists = await pathExists(tempFixturePath)
 123   if (!exists) {
 124     console.log('Generating video with framerate %d.', fps)
 125
 126     return new Promise<string>((res, rej) => {
 127       ffmpeg()
 128         .outputOptions([ '-f rawvideo', '-video_size 1280x720', '-i /dev/urandom' ])
 129         .outputOptions([ '-ac 2', '-f s16le', '-i /dev/urandom', '-t 10' ])
 130         .outputOptions([ `-r ${fps}` ])
 131         .output(tempFixturePath)
 132         .on('error', rej)
 133         .on('end', () => res(tempFixturePath))
 134         .run()
 135     })
 136   }
 137
 138   return tempFixturePath
 139 }
 140
 141 async function getFileSize (path: string) {
 142   const stats = await stat(path)
 143
 144   return stats.size
 145 }
 146
 147 // ---------------------------------------------------------------------------
 148
 149 export {
 150   dateIsValid,
 151   wait,
 152   areHttpImportTestsDisabled,
 153   buildServerDirectory,
 154   webtorrentAdd,
 155   getFileSize,
 156   immutableAssign,
 157   testImage,
 158   isGithubCI,
 159   buildAbsoluteFixturePath,
 160   root,
 161   generateHighBitrateVideo,
 162   generateVideoWithFramerate
 163 }