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)

8 files changed, 203 insertions, 0 deletions

diff --git a/packages/node-utils/package.json b/packages/node-utils/package.json
new file mode 100644
index 000000000..cd7d8ac80
--- /dev/null
+++ b/packages/node-utils/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "@peertube/peertube-node-utils",
+  "private": true,
+  "version": "0.0.0",
+  "main": "dist/index.js",
+  "files": [ "dist" ],
+  "exports": {
+    "types": "./dist/index.d.ts",
+    "peertube:tsx": "./src/index.ts",
+    "default": "./dist/index.js"
+  },
+  "type": "module",
+  "devDependencies": {},
+  "scripts": {
+    "build": "tsc",
+    "watch": "tsc -w"
+  },
+  "dependencies": {}
+}
diff --git a/packages/node-utils/src/crypto.ts b/packages/node-utils/src/crypto.ts
new file mode 100644
index 000000000..1a583f1a0
--- /dev/null
+++ b/packages/node-utils/src/crypto.ts
@@ -0,0 +1,20 @@
+import { BinaryToTextEncoding, createHash } from 'crypto'
+
+function sha256 (str: string | Buffer, encoding: BinaryToTextEncoding = 'hex') {
+  return createHash('sha256').update(str).digest(encoding)
+}
+
+function sha1 (str: string | Buffer, encoding: BinaryToTextEncoding = 'hex') {
+  return createHash('sha1').update(str).digest(encoding)
+}
+
+// high excluded
+function randomInt (low: number, high: number) {
+  return Math.floor(Math.random() * (high - low) + low)
+}
+
+export {
+  randomInt,
+  sha256,
+  sha1
+}
diff --git a/packages/node-utils/src/env.ts b/packages/node-utils/src/env.ts
new file mode 100644
index 000000000..1a28f509e
--- /dev/null
+++ b/packages/node-utils/src/env.ts
@@ -0,0 +1,58 @@
+export function parallelTests () {
+  return process.env.MOCHA_PARALLEL === 'true'
+}
+
+export function isGithubCI () {
+  return !!process.env.GITHUB_WORKSPACE
+}
+
+export function areHttpImportTestsDisabled () {
+  const disabled = process.env.DISABLE_HTTP_IMPORT_TESTS === 'true'
+
+  if (disabled) console.log('DISABLE_HTTP_IMPORT_TESTS env set to "true" so import tests are disabled')
+
+  return disabled
+}
+
+export function areMockObjectStorageTestsDisabled () {
+  const disabled = process.env.ENABLE_OBJECT_STORAGE_TESTS !== 'true'
+
+  if (disabled) console.log('ENABLE_OBJECT_STORAGE_TESTS env is not set to "true" so object storage tests are disabled')
+
+  return disabled
+}
+
+export function areScalewayObjectStorageTestsDisabled () {
+  if (areMockObjectStorageTestsDisabled()) return true
+
+  const enabled = process.env.OBJECT_STORAGE_SCALEWAY_KEY_ID && process.env.OBJECT_STORAGE_SCALEWAY_ACCESS_KEY
+  if (!enabled) {
+    console.log(
+      'OBJECT_STORAGE_SCALEWAY_KEY_ID and/or OBJECT_STORAGE_SCALEWAY_ACCESS_KEY are not set, so scaleway object storage tests are disabled'
+    )
+
+    return true
+  }
+
+  return false
+}
+
+export function isTestInstance () {
+  return process.env.NODE_ENV === 'test'
+}
+
+export function isDevInstance () {
+  return process.env.NODE_ENV === 'dev'
+}
+
+export function isTestOrDevInstance () {
+  return isTestInstance() || isDevInstance()
+}
+
+export function isProdInstance () {
+  return process.env.NODE_ENV === 'production'
+}
+
+export function getAppNumber () {
+  return process.env.NODE_APP_INSTANCE || ''
+}
diff --git a/packages/node-utils/src/file.ts b/packages/node-utils/src/file.ts
new file mode 100644
index 000000000..89cf5fe0f
--- /dev/null
+++ b/packages/node-utils/src/file.ts
@@ -0,0 +1,11 @@
+import { stat } from 'fs/promises'
+
+async function getFileSize (path: string) {
+  const stats = await stat(path)
+
+  return stats.size
+}
+
+export {
+  getFileSize
+}
diff --git a/packages/node-utils/src/index.ts b/packages/node-utils/src/index.ts
new file mode 100644
index 000000000..89f22e7d3
--- /dev/null
+++ b/packages/node-utils/src/index.ts
@@ -0,0 +1,5 @@
+export * from './crypto.js'
+export * from './env.js'
+export * from './file.js'
+export * from './path.js'
+export * from './uuid.js'
diff --git a/packages/node-utils/src/path.ts b/packages/node-utils/src/path.ts
new file mode 100644
index 000000000..1d569833e
--- /dev/null
+++ b/packages/node-utils/src/path.ts
@@ -0,0 +1,50 @@
+import { basename, extname, isAbsolute, join, resolve } from 'path'
+import { fileURLToPath } from 'url'
+
+let rootPath: string
+
+export function currentDir (metaUrl: string) {
+  return resolve(fileURLToPath(metaUrl), '..')
+}
+
+export function root (metaUrl?: string) {
+  if (rootPath) return rootPath
+
+  if (!metaUrl) {
+    metaUrl = import.meta.url
+
+    const filename = basename(metaUrl) === 'path.js' || basename(metaUrl) === 'path.ts'
+    if (!filename) throw new Error('meta url must be specified as this file has been bundled in another one')
+  }
+
+  rootPath = currentDir(metaUrl)
+
+  if (basename(rootPath) === 'src' || basename(rootPath) === 'dist') rootPath = resolve(rootPath, '..')
+  if ([ 'node-utils', 'peertube-cli', 'peertube-runner' ].includes(basename(rootPath))) rootPath = resolve(rootPath, '..')
+  if ([ 'packages', 'apps' ].includes(basename(rootPath))) rootPath = resolve(rootPath, '..')
+  if (basename(rootPath) === 'dist') rootPath = resolve(rootPath, '..')
+
+  return rootPath
+}
+
+export function buildPath (path: string) {
+  if (isAbsolute(path)) return path
+
+  return join(root(), path)
+}
+
+export function getLowercaseExtension (filename: string) {
+  const ext = extname(filename) || ''
+
+  return ext.toLowerCase()
+}
+
+export function buildAbsoluteFixturePath (path: string, customCIPath = false) {
+  if (isAbsolute(path)) return path
+
+  if (customCIPath && process.env.GITHUB_WORKSPACE) {
+    return join(process.env.GITHUB_WORKSPACE, 'fixtures', path)
+  }
+
+  return join(root(), 'packages', 'tests', 'fixtures', path)
+}
diff --git a/packages/node-utils/src/uuid.ts b/packages/node-utils/src/uuid.ts
new file mode 100644
index 000000000..f158ec487
--- /dev/null
+++ b/packages/node-utils/src/uuid.ts
@@ -0,0 +1,32 @@
+import short from 'short-uuid'
+
+const translator = short()
+
+function buildUUID () {
+  return short.uuid()
+}
+
+function uuidToShort (uuid: string) {
+  if (!uuid) return uuid
+
+  return translator.fromUUID(uuid)
+}
+
+function shortToUUID (shortUUID: string) {
+  if (!shortUUID) return shortUUID
+
+  return translator.toUUID(shortUUID)
+}
+
+function isShortUUID (value: string) {
+  if (!value) return false
+
+  return value.length === translator.maxLength
+}
+
+export {
+  buildUUID,
+  uuidToShort,
+  shortToUUID,
+  isShortUUID
+}
diff --git a/packages/node-utils/tsconfig.json b/packages/node-utils/tsconfig.json
new file mode 100644
index 000000000..58fa2330b
--- /dev/null
+++ b/packages/node-utils/tsconfig.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "./dist",
+    "rootDir": "src",
+    "tsBuildInfoFile": "./dist/.tsbuildinfo"
+  }
+}