Move utils to /shared

Move utils used by /server/tools/* & /server/tests/**/* into
/shared folder.

Issue: #1336

1 files changed, 101 insertions, 0 deletions

diff --git a/shared/utils/miscs/miscs.ts b/shared/utils/miscs/miscs.ts
new file mode 100644
index 000000000..589daa420
--- /dev/null
+++ b/shared/utils/miscs/miscs.ts
@@ -0,0 +1,101 @@
+/* tslint:disable:no-unused-expression */
+
+import * as chai from 'chai'
+import { isAbsolute, join } from 'path'
+import * as request from 'supertest'
+import * as WebTorrent from 'webtorrent'
+import { pathExists, readFile } from 'fs-extra'
+import * as ffmpeg from 'fluent-ffmpeg'
+
+const expect = chai.expect
+let webtorrent = new WebTorrent()
+
+function immutableAssign <T, U> (target: T, source: U) {
+  return Object.assign<{}, T, U>({}, target, source)
+}
+
+  // Default interval -> 5 minutes
+function dateIsValid (dateString: string, interval = 300000) {
+  const dateToCheck = new Date(dateString)
+  const now = new Date()
+
+  return Math.abs(now.getTime() - dateToCheck.getTime()) <= interval
+}
+
+function wait (milliseconds: number) {
+  return new Promise(resolve => setTimeout(resolve, milliseconds))
+}
+
+function webtorrentAdd (torrent: string, refreshWebTorrent = false) {
+  if (refreshWebTorrent === true) webtorrent = new WebTorrent()
+
+  return new Promise<WebTorrent.Torrent>(res => webtorrent.add(torrent, res))
+}
+
+function root () {
+  // We are in server/tests/utils/miscs
+  return join(__dirname, '..', '..', '..', '..')
+}
+
+async function testImage (url: string, imageName: string, imagePath: string, extension = '.jpg') {
+  const res = await request(url)
+    .get(imagePath)
+    .expect(200)
+
+  const body = res.body
+
+  const data = await readFile(join(__dirname, '..', '..', 'fixtures', imageName + extension))
+  const minLength = body.length - ((20 * body.length) / 100)
+  const maxLength = body.length + ((20 * body.length) / 100)
+
+  expect(data.length).to.be.above(minLength)
+  expect(data.length).to.be.below(maxLength)
+}
+
+function buildAbsoluteFixturePath (path: string, customTravisPath = false) {
+  if (isAbsolute(path)) {
+    return path
+  }
+
+  if (customTravisPath && process.env.TRAVIS) return join(process.env.HOME, 'fixtures', path)
+
+  return join(__dirname, '..', '..', 'fixtures', path)
+}
+
+async function generateHighBitrateVideo () {
+  const tempFixturePath = buildAbsoluteFixturePath('video_high_bitrate_1080p.mp4', true)
+
+  const exists = await pathExists(tempFixturePath)
+  if (!exists) {
+
+    // Generate a random, high bitrate video on the fly, so we don't have to include
+    // a large file in the repo. The video needs to have a certain minimum length so
+    // that FFmpeg properly applies bitrate limits.
+    // https://stackoverflow.com/a/15795112
+    return new Promise<string>(async (res, rej) => {
+      ffmpeg()
+        .outputOptions([ '-f rawvideo', '-video_size 1920x1080', '-i /dev/urandom' ])
+        .outputOptions([ '-ac 2', '-f s16le', '-i /dev/urandom', '-t 10' ])
+        .outputOptions([ '-maxrate 10M', '-bufsize 10M' ])
+        .output(tempFixturePath)
+        .on('error', rej)
+        .on('end', () => res(tempFixturePath))
+        .run()
+    })
+  }
+
+  return tempFixturePath
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  dateIsValid,
+  wait,
+  webtorrentAdd,
+  immutableAssign,
+  testImage,
+  buildAbsoluteFixturePath,
+  root,
+  generateHighBitrateVideo
+}