Migrate server to ESM

Sorry for the very big commit that may lead to git log issues and merge
conflicts, but it's a major step forward:

 * Server can be faster at startup because imports() are async and we can
   easily lazy import big modules
 * Angular doesn't seem to support ES import (with .js extension), so we
   had to correctly organize peertube into a monorepo:
    * Use yarn workspace feature
    * Use typescript reference projects for dependencies
    * Shared projects have been moved into "packages", each one is now a
      node module (with a dedicated package.json/tsconfig.json)
    * server/tools have been moved into apps/ and is now a dedicated app
      bundled and published on NPM so users don't have to build peertube
      cli tools manually
    * server/tests have been moved into packages/ so we don't compile
      them every time we want to run the server
 * Use isolatedModule option:
   * Had to move from const enum to const
     (https://www.typescriptlang.org/docs/handbook/enums.html#objects-vs-enums)
   * Had to explictely specify "type" imports when used in decorators
 * Prefer tsx (that uses esbuild under the hood) instead of ts-node to
   load typescript files (tests with mocha or scripts):
     * To reduce test complexity as esbuild doesn't support decorator
       metadata, we only test server files that do not import server
       models
     * We still build tests files into js files for a faster CI
 * Remove unmaintained peertube CLI import script
 * Removed some barrels to speed up execution (less imports)

1 files changed, 187 insertions, 0 deletions

diff --git a/server/scripts/prune-storage.ts b/server/scripts/prune-storage.ts
new file mode 100755
index 000000000..9309724b9
--- /dev/null
+++ b/server/scripts/prune-storage.ts
@@ -0,0 +1,187 @@
+import Bluebird from 'bluebird'
+import { remove } from 'fs-extra/esm'
+import { readdir, stat } from 'fs/promises'
+import { basename, join } from 'path'
+import prompt from 'prompt'
+import { uniqify } from '@peertube/peertube-core-utils'
+import { ThumbnailType, ThumbnailType_Type } from '@peertube/peertube-models'
+import { DIRECTORIES } from '@server/initializers/constants.js'
+import { VideoFileModel } from '@server/models/video/video-file.js'
+import { VideoStreamingPlaylistModel } from '@server/models/video/video-streaming-playlist.js'
+import { getUUIDFromFilename } from '../server/helpers/utils.js'
+import { CONFIG } from '../server/initializers/config.js'
+import { initDatabaseModels } from '../server/initializers/database.js'
+import { ActorImageModel } from '../server/models/actor/actor-image.js'
+import { VideoRedundancyModel } from '../server/models/redundancy/video-redundancy.js'
+import { ThumbnailModel } from '../server/models/video/thumbnail.js'
+import { VideoModel } from '../server/models/video/video.js'
+
+run()
+  .then(() => process.exit(0))
+  .catch(err => {
+    console.error(err)
+    process.exit(-1)
+  })
+
+async function run () {
+  const dirs = Object.values(CONFIG.STORAGE)
+
+  if (uniqify(dirs).length !== dirs.length) {
+    console.error('Cannot prune storage because you put multiple storage keys in the same directory.')
+    process.exit(0)
+  }
+
+  await initDatabaseModels(true)
+
+  let toDelete: string[] = []
+
+  console.log('Detecting files to remove, it could take a while...')
+
+  toDelete = toDelete.concat(
+    await pruneDirectory(DIRECTORIES.VIDEOS.PUBLIC, doesWebVideoFileExist()),
+    await pruneDirectory(DIRECTORIES.VIDEOS.PRIVATE, doesWebVideoFileExist()),
+
+    await pruneDirectory(DIRECTORIES.HLS_STREAMING_PLAYLIST.PRIVATE, doesHLSPlaylistExist()),
+    await pruneDirectory(DIRECTORIES.HLS_STREAMING_PLAYLIST.PUBLIC, doesHLSPlaylistExist()),
+
+    await pruneDirectory(CONFIG.STORAGE.TORRENTS_DIR, doesTorrentFileExist()),
+
+    await pruneDirectory(CONFIG.STORAGE.REDUNDANCY_DIR, doesRedundancyExist),
+
+    await pruneDirectory(CONFIG.STORAGE.PREVIEWS_DIR, doesThumbnailExist(true, ThumbnailType.PREVIEW)),
+    await pruneDirectory(CONFIG.STORAGE.THUMBNAILS_DIR, doesThumbnailExist(false, ThumbnailType.MINIATURE)),
+
+    await pruneDirectory(CONFIG.STORAGE.ACTOR_IMAGES_DIR, doesActorImageExist)
+  )
+
+  const tmpFiles = await readdir(CONFIG.STORAGE.TMP_DIR)
+  toDelete = toDelete.concat(tmpFiles.map(t => join(CONFIG.STORAGE.TMP_DIR, t)))
+
+  if (toDelete.length === 0) {
+    console.log('No files to delete.')
+    return
+  }
+
+  console.log('Will delete %d files:\n\n%s\n\n', toDelete.length, toDelete.join('\n'))
+
+  const res = await askConfirmation()
+  if (res === true) {
+    console.log('Processing delete...\n')
+
+    for (const path of toDelete) {
+      await remove(path)
+    }
+
+    console.log('Done!')
+  } else {
+    console.log('Exiting without deleting files.')
+  }
+}
+
+type ExistFun = (file: string) => Promise<boolean> | boolean
+async function pruneDirectory (directory: string, existFun: ExistFun) {
+  const files = await readdir(directory)
+
+  const toDelete: string[] = []
+  await Bluebird.map(files, async file => {
+    const filePath = join(directory, file)
+
+    if (await existFun(filePath) !== true) {
+      toDelete.push(filePath)
+    }
+  }, { concurrency: 20 })
+
+  return toDelete
+}
+
+function doesWebVideoFileExist () {
+  return (filePath: string) => {
+    // Don't delete private directory
+    if (filePath === DIRECTORIES.VIDEOS.PRIVATE) return true
+
+    return VideoFileModel.doesOwnedWebVideoFileExist(basename(filePath))
+  }
+}
+
+function doesHLSPlaylistExist () {
+  return (hlsPath: string) => {
+    // Don't delete private directory
+    if (hlsPath === DIRECTORIES.HLS_STREAMING_PLAYLIST.PRIVATE) return true
+
+    return VideoStreamingPlaylistModel.doesOwnedHLSPlaylistExist(basename(hlsPath))
+  }
+}
+
+function doesTorrentFileExist () {
+  return (filePath: string) => VideoFileModel.doesOwnedTorrentFileExist(basename(filePath))
+}
+
+function doesThumbnailExist (keepOnlyOwned: boolean, type: ThumbnailType_Type) {
+  return async (filePath: string) => {
+    const thumbnail = await ThumbnailModel.loadByFilename(basename(filePath), type)
+    if (!thumbnail) return false
+
+    if (keepOnlyOwned) {
+      const video = await VideoModel.load(thumbnail.videoId)
+      if (video.isOwned() === false) return false
+    }
+
+    return true
+  }
+}
+
+async function doesActorImageExist (filePath: string) {
+  const image = await ActorImageModel.loadByName(basename(filePath))
+
+  return !!image
+}
+
+async function doesRedundancyExist (filePath: string) {
+  const isPlaylist = (await stat(filePath)).isDirectory()
+
+  if (isPlaylist) {
+    // Don't delete HLS redundancy directory
+    if (filePath === DIRECTORIES.HLS_REDUNDANCY) return true
+
+    const uuid = getUUIDFromFilename(filePath)
+    const video = await VideoModel.loadWithFiles(uuid)
+    if (!video) return false
+
+    const p = video.getHLSPlaylist()
+    if (!p) return false
+
+    const redundancy = await VideoRedundancyModel.loadLocalByStreamingPlaylistId(p.id)
+    return !!redundancy
+  }
+
+  const file = await VideoFileModel.loadByFilename(basename(filePath))
+  if (!file) return false
+
+  const redundancy = await VideoRedundancyModel.loadLocalByFileId(file.id)
+  return !!redundancy
+}
+
+async function askConfirmation () {
+  return new Promise((res, rej) => {
+    prompt.start()
+
+    const schema = {
+      properties: {
+        confirm: {
+          type: 'string',
+          description: 'These following unused files can be deleted, but please check your backups first (bugs happen).' +
+            ' Notice PeerTube must have been stopped when your ran this script.' +
+            ' Can we delete these files?',
+          default: 'n',
+          required: true
+        }
+      }
+    }
+
+    prompt.get(schema, function (err, result) {
+      if (err) return rej(err)
+
+      return res(result.confirm?.match(/y/) !== null)
+    })
+  })
+}