config optional if not required for current operation

.gitignore

@@ -1,6 +1,7 @@
 node_modules/
 package-lock.json
 .idea
+yarn.lock
 
 config.yml
 bin

.prettierrc

@@ -0,0 +1,3 @@
+semi: false
+singleQuote: true
+trailingComma: 'es5'

README.md

@@ -1,2 +1,9 @@
 # autorestic
 High level CLI utility for restic
+
+
+## Installation
+
+```
+curl -s https://raw.githubusercontent.com/CupCakeArmy/autorestic/master/install.sh | sh
+```

install.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+OUT_FILE=/usr/local/bin/autorestic
+
+if [[ "$OSTYPE" == "linux-gnu" ]]; then
+    TYPE=linux
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+    TYPE=macos
+else
+    echo "Unsupported OS"
+    exit
+fi
+
+curl -s https://api.github.com/repos/cupcakearmy/autorestic/releases/latest \
+| grep "browser_download_url.*_${TYPE}" \
+| cut -d : -f 2,3 \
+| tr -d \" \
+| wget -O ${OUT_FILE} -i -
+chmod +x ${OUT_FILE}
+
+autorestic install
+autorestic

package.json

@@ -4,12 +4,13 @@
 		"build": "tsc",
 		"build:watch": "tsc -w",
 		"dev": "tsnd --no-notify --respawn ./src/autorestic.ts",
-		"bin": "npm run build && pkg lib/autorestic.js --out-path bin"
+		"bin": "npm run build && pkg lib/autorestic.js --targets latest-macos-x64,latest-linux-x64 --out-path bin"
 	},
 	"devDependencies": {
 		"@types/decompress": "^4.2.3",
 		"@types/js-yaml": "^3.12.1",
 		"@types/minimist": "^1.2.0",
+		"@types/node": "^12.11.7",
 		"pkg": "^4.4.0",
 		"ts-node-dev": "^1.0.0-pre.40",
 		"typescript": "^3.5.1"

src/autorestic.ts

@@ -1,12 +1,10 @@
 import 'colors'
 import minimist from 'minimist'
-import { resolve } from 'path'
 
 import { init } from './config'
 import handlers, { error, help } from './handlers'
 import { Config } from './types'
 
-
 process.on('uncaughtException', err => {
   console.log(err.message)
   process.exit(1)
@@ -14,28 +12,34 @@ process.on('uncaughtException', err => {
 
 export const { _: commands, ...flags } = minimist(process.argv.slice(2), {
   alias: {
-		'c': 'config',
+    c: 'config',
-		'v': 'verbose',
+    v: 'version',
-		'h': 'help',
+    h: 'help',
-		'a': 'all',
+    a: 'all',
-		'l': 'location',
+    l: 'location',
-		'b': 'backend',
+    b: 'backend',
   },
   boolean: ['a'],
   string: ['l', 'b'],
 })
 
-export const DEFAULT_CONFIG = 'config.yml'
+export const VERSION = '0.5'
 export const INSTALL_DIR = '/usr/local/bin'
-export const CONFIG_FILE: string = resolve(flags.config || DEFAULT_CONFIG)
 export const VERBOSE = flags.verbose
 
-export const config: Config = init()
+if (flags.version) {
+  console.log('version'.grey, VERSION)
+  process.exit(0)
+}
+
+export const config = init()
+
+function main() {
+  if (commands.length < 1) return help()
 
-if (commands.length < 1)
-	help()
-else {
   const command: string = commands[0]
   const args: string[] = commands.slice(1)
   ;(handlers[command] || error)(args, flags)
 }
+
+main()

src/backend.ts

@@ -2,11 +2,10 @@ import { Writer } from 'clitastic'
 
 import { config, VERBOSE } from './autorestic'
 import { Backend, Backends } from './types'
-import { exec } from './utils'
+import { exec, ConfigError } from './utils'
 
 const ALREADY_EXISTS = /(?=.*exists)(?=.*already)(?=.*config).*/
 
-
 export const getPathFromBackend = (backend: Backend): string => {
   switch (backend.type) {
     case 'local':
@@ -24,7 +23,6 @@ export const getPathFromBackend = (backend: Backend): string => {
   }
 }
 
-
 export const getEnvFromBackend = (backend: Backend) => {
   const { type, path, key, ...rest } = backend
   return {
@@ -34,7 +32,6 @@ export const getEnvFromBackend = (backend: Backend) => {
   }
 }
 
-
 export const checkAndConfigureBackend = (name: string, backend: Backend) => {
   const writer = new Writer(name.blue + ' : ' + 'Configuring... ⏳')
   const env = getEnvFromBackend(backend)
@@ -49,8 +46,12 @@ export const checkAndConfigureBackend = (name: string, backend: Backend) => {
   writer.done(name.blue + ' : ' + 'Done ✓'.green)
 }
 
+export const checkAndConfigureBackends = (backends?: Backends) => {
+  if (!backends) {
+    if (!config) throw ConfigError
+    backends = config.backends
+  }
 
-export const checkAndConfigureBackends = (backends: Backends = config.backends) => {
   console.log('\nConfiguring Backends'.grey.underline)
   for (const [name, backend] of Object.entries(backends))
     checkAndConfigureBackend(name, backend)

src/backup.ts

@@ -3,34 +3,44 @@ import { Writer } from 'clitastic'
 import { config, VERBOSE } from './autorestic'
 import { getEnvFromBackend } from './backend'
 import { Locations, Location } from './types'
-import { exec } from './utils'
+import { exec, ConfigError } from './utils'
-
+import { CONFIG_FILE } from './config'
+import { resolve, dirname } from 'path'
 
 export const backupSingle = (name: string, from: string, to: string) => {
+  if (!config) throw ConfigError
   const writer = new Writer(name + to.blue + ' : ' + 'Backing up... ⏳')
   const backend = config.backends[to]
-	const cmd = exec('restic', ['backup', from], { env: getEnvFromBackend(backend) })
+  const pathRelativeToConfigFile = resolve(dirname(CONFIG_FILE), from)
+
+  const cmd = exec('restic', ['backup', pathRelativeToConfigFile], {
+    env: getEnvFromBackend(backend),
+  })
 
   if (VERBOSE) console.log(cmd.out, cmd.err)
   writer.done(name + to.blue + ' : ' + 'Done ✓'.green)
 }
 
-
 export const backupLocation = (name: string, backup: Location) => {
   const display = name.yellow + ' ▶ '
   if (Array.isArray(backup.to)) {
     let first = true
     for (const t of backup.to) {
-			const nameOrBlankSpaces: string = first ? display : new Array(name.length + 3).fill(' ').join('')
+      const nameOrBlankSpaces: string = first
+        ? display
+        : new Array(name.length + 3).fill(' ').join('')
       backupSingle(nameOrBlankSpaces, backup.from, t)
       if (first) first = false
     }
-	} else
+  } else backupSingle(display, backup.from, backup.to)
-		backupSingle(display, backup.from, backup.to)
 }
 
+export const backupAll = (backups?: Locations) => {
+  if (!backups) {
+    if (!config) throw ConfigError
+    backups = config.locations
+  }
 
-export const backupAll = (backups: Locations = config.locations) => {
   console.log('\nBacking Up'.underline.grey)
   for (const [name, backup] of Object.entries(backups))
     backupLocation(name, backup)

src/config.ts

@@ -1,16 +1,21 @@
-import { readFileSync, writeFileSync } from 'fs'
+import { readFileSync, writeFileSync, statSync } from 'fs'
+import { resolve } from 'path'
 import yaml from 'js-yaml'
-import { CONFIG_FILE } from './autorestic'
+import { flags } from './autorestic'
 import { Backend, Config } from './types'
 import { makeObjectKeysLowercase, rand } from './utils'
-
+import { homedir } from 'os'
 
 export const normalizeAndCheckBackends = (config: Config) => {
   config.backends = makeObjectKeysLowercase(config.backends)
 
-	for (const [name, { type, path, key, ...rest }] of Object.entries(config.backends)) {
+  for (const [name, { type, path, key, ...rest }] of Object.entries(
-
+    config.backends
-		if (!type || !path) throw new Error(`The backend "${name}" is missing some required attributes`)
+  )) {
+    if (!type || !path)
+      throw new Error(
+        `The backend "${name}" is missing some required attributes`
+      )
 
     const tmp: any = {
       type,
@@ -24,7 +29,6 @@ export const normalizeAndCheckBackends = (config: Config) => {
   }
 }
 
-
 export const normalizeAndCheckBackups = (config: Config) => {
   config.locations = makeObjectKeysLowercase(config.locations)
   const backends = Object.keys(config.backends)
@@ -34,20 +38,47 @@ export const normalizeAndCheckBackups = (config: Config) => {
       throw new Error(`Cannot find the backend "${backend}" for "${backup}"`)
   }
 
-	for (const [name, { from, to, ...rest }] of Object.entries(config.locations)) {
+  for (const [name, { from, to, ...rest }] of Object.entries(
-		if (!from || !to) throw new Error(`The backup "${name}" is missing some required attributes`)
+    config.locations
+  )) {
+    if (!from || !to)
+      throw new Error(
+        `The backup "${name}" is missing some required attributes`
+      )
 
-		if (Array.isArray(to))
+    if (Array.isArray(to)) for (const t of to) checkDestination(t, name)
-			for (const t of to)
+    else checkDestination(to, name)
-				checkDestination(t, name)
-		else
-			checkDestination(to, name)
   }
 }
 
+const findConfigFile = (): string => {
+  const config = '.autorestic.yml'
+  const paths = [
+    resolve(flags.config || ''),
+    resolve('./' + config),
+    homedir() + '/' + config,
+  ]
+  for (const path of paths) {
+    try {
+      const file = statSync(path)
+      if (file.isFile()) return path
+    } catch (e) {}
+  }
+  throw new Error('No Config file found')
+}
 
-export const init = (): Config => {
+export let CONFIG_FILE: string = ''
-	const raw: Config = makeObjectKeysLowercase(yaml.safeLoad(readFileSync(CONFIG_FILE).toString()))
+
+export const init = (): Config | undefined => {
+  try {
+    CONFIG_FILE = findConfigFile()
+  } catch (e) {
+    return
+  }
+
+  const raw: Config = makeObjectKeysLowercase(
+    yaml.safeLoad(readFileSync(CONFIG_FILE).toString())
+  )
 
   normalizeAndCheckBackends(raw)
   normalizeAndCheckBackups(raw)

src/handlers.ts

@@ -1,25 +1,36 @@
 import axios from 'axios'
 import { Writer } from 'clitastic'
-import { createWriteStream, unlinkSync } from 'fs'
+import { unlinkSync } from 'fs'
-import { arch, platform, tmpdir } from 'os'
+import { tmpdir } from 'os'
 import { join, resolve } from 'path'
 
-import { config, INSTALL_DIR } from './autorestic'
+import { config, INSTALL_DIR, VERSION } from './autorestic'
 import { checkAndConfigureBackends, getEnvFromBackend } from './backend'
 import { backupAll } from './backup'
 import { Backends, Flags, Locations } from './types'
-import { checkIfCommandIsAvailable, checkIfResticIsAvailable, exec, filterObjectByKey, singleToArray } from './utils'
+import {
+  checkIfCommandIsAvailable,
+  checkIfResticIsAvailable,
+  downloadFile,
+  exec,
+  filterObjectByKey,
+  singleToArray,
+  ConfigError,
+} from './utils'
 
-export type Handlers = { [command: string]: (args: string[], flags: Flags) => void }
+export type Handlers = {
+  [command: string]: (args: string[], flags: Flags) => void
+}
 
 const parseBackend = (flags: Flags): Backends => {
+  if (!config) throw ConfigError
   if (!flags.all && !flags.backend)
-		throw new Error('No backends specified.'.red
+    throw new Error(
-			+ '\n--all [-a]\t\t\t\tCheck all.'
+      'No backends specified.'.red +
-			+ '\n--backend [-b] myBackend\t\tSpecify one or more backend',
+        '\n--all [-a]\t\t\t\tCheck all.' +
+        '\n--backend [-b] myBackend\t\tSpecify one or more backend'
     )
-	if (flags.all)
+  if (flags.all) return config.backends
-		return config.backends
   else {
     const backends = singleToArray<string>(flags.backend)
     for (const backend of backends)
@@ -30,10 +41,12 @@ const parseBackend = (flags: Flags): Backends => {
 }
 
 const parseLocations = (flags: Flags): Locations => {
+  if (!config) throw ConfigError
   if (!flags.all && !flags.location)
-		throw new Error('No locations specified.'.red
+    throw new Error(
-			+ '\n--all [-a]\t\t\t\tBackup all.'
+      'No locations specified.'.red +
-			+ '\n--location [-l] site1\t\t\tSpecify one or more locations',
+        '\n--all [-a]\t\t\t\tBackup all.' +
+        '\n--location [-l] site1\t\t\tSpecify one or more locations'
     )
 
   if (flags.all) {
@@ -54,6 +67,7 @@ const handlers: Handlers = {
     checkAndConfigureBackends(backends)
   },
   backup(args, flags) {
+    if (!config) throw ConfigError
     checkIfResticIsAvailable()
     const locations: Locations = parseLocations(flags)
 
@@ -61,22 +75,29 @@ const handlers: Handlers = {
     for (const to of Object.values(locations).map(location => location.to))
       Array.isArray(to) ? to.forEach(t => backends.add(t)) : backends.add(to)
 
-		checkAndConfigureBackends(filterObjectByKey(config.backends, Array.from(backends)))
+    checkAndConfigureBackends(
+      filterObjectByKey(config.backends, Array.from(backends))
+    )
     backupAll(locations)
 
     console.log('\nFinished!'.underline + ' 🎉')
   },
   restore(args, flags) {
+    if (!config) throw ConfigError
     checkIfResticIsAvailable()
     const locations = parseLocations(flags)
     for (const [name, location] of Object.entries(locations)) {
       const w = new Writer(name.green + `\t\tRestoring... ⏳`)
-			const env = getEnvFromBackend(config.backends[Array.isArray(location.to) ? location.to[0] : location.to])
+      const env = getEnvFromBackend(
+        config.backends[
+          Array.isArray(location.to) ? location.to[0] : location.to
+        ]
+      )
 
       exec(
         'restic',
         ['restore', 'latest', '--path', resolve(location.from), ...args],
-				{ env },
+        { env }
       )
       w.done(name.green + '\t\tDone 🎉')
     }
@@ -97,8 +118,7 @@ const handlers: Handlers = {
       checkIfResticIsAvailable()
       console.log('Restic is already installed')
       return
-		} catch (e) {
+    } catch (e) {}
-		}
 
     const w = new Writer('Checking latest version... ⏳')
     checkIfCommandIsAvailable('bzip2')
@@ -109,88 +129,113 @@ const handlers: Handlers = {
     })
 
     const archMap: { [a: string]: string } = {
-			'x32': '386',
+      x32: '386',
-			'x64': 'amd64',
+      x64: 'amd64',
     }
 
     w.replaceLn('Downloading binary... 🌎')
-		const name = `${json.name.replace(' ', '_')}_${platform()}_${archMap[arch()]}.bz2`
+    const name = `${json.name.replace(' ', '_')}_${process.platform}_${
+      archMap[process.arch]
+    }.bz2`
     const dl = json.assets.find((asset: any) => asset.name === name)
-		if (!dl) return console.log(
+    if (!dl)
+      return console.log(
         'Cannot get the right binary.'.red,
-			'Please see https://bit.ly/2Y1Rzai',
+        'Please see https://bit.ly/2Y1Rzai'
       )
 
-		const { data: file } = await axios({
+    const tmp = join(tmpdir(), name)
-			method: 'get',
+    const extracted = tmp.slice(0, -4) //without the .bz2
-			url: dl.browser_download_url,
-			responseType: 'stream',
-		})
 
-		const from = join(tmpdir(), name)
+    await downloadFile(dl.browser_download_url, tmp)
-		const to = from.slice(0, -4)
 
-		w.replaceLn('Decompressing binary... 📦')
-		const stream = createWriteStream(from)
-		await new Promise(res => {
-			const writer = file.pipe(stream)
-			writer.on('close', res)
-		})
-		stream.close()
-
-		w.replaceLn(`Moving to ${INSTALL_DIR} 🚙`)
     // TODO: Native bz2
     // Decompress
-		exec('bzip2', ['-dk', from])
+    w.replaceLn('Decompressing binary... 📦')
-		// Remove .bz2
+    exec('bzip2', ['-dk', tmp])
-		exec('chmod', ['+x', to])
+    unlinkSync(tmp)
-		exec('mv', [to, INSTALL_DIR + '/restic'])
 
-		unlinkSync(from)
+    w.replaceLn(`Moving to ${INSTALL_DIR} 🚙`)
+    exec('chmod', ['+x', extracted])
+    exec('mv', [extracted, INSTALL_DIR + '/restic'])
 
-		w.done(`\nFinished! restic is installed under: ${INSTALL_DIR}`.underline + ' 🎉')
+    w.done(
+      `\nFinished! restic is installed under: ${INSTALL_DIR}`.underline + ' 🎉'
+    )
   },
   uninstall() {
+    for (const bin of ['restic', 'autorestic'])
       try {
-			unlinkSync(INSTALL_DIR + '/restic')
+        unlinkSync(INSTALL_DIR + '/' + bin)
-			console.log(`Finished! restic was uninstalled`)
+        console.log(`Finished! ${bin} was uninstalled`)
       } catch (e) {
-			console.log('restic is already uninstalled'.red)
+        console.log(`${bin} is already uninstalled`.red)
       }
   },
-	update() {
+  async update() {
     checkIfResticIsAvailable()
-		const w = new Writer('Checking for new restic version... ⏳')
+    const w = new Writer('Checking for latest restic version... ⏳')
     exec('restic', ['self-update'])
+
+    w.replaceLn('Checking for latest autorestic version... ⏳')
+    const { data: json } = await axios({
+      method: 'get',
+      url:
+        'https://api.github.com/repos/cupcakearmy/autorestic/releases/latest',
+      responseType: 'json',
+    })
+
+    if (json.tag_name != VERSION) {
+      const platformMap: { [key: string]: string } = {
+        darwin: 'macos',
+      }
+
+      const name = `autorestic_${platformMap[process.platform] ||
+        process.platform}_${process.arch}`
+      const dl = json.assets.find((asset: any) => asset.name === name)
+
+      const to = INSTALL_DIR + '/autorestic'
+      w.replaceLn('Downloading binary... 🌎')
+      await downloadFile(dl.browser_download_url, to)
+
+      exec('chmod', ['+x', to])
+    }
+
     w.done('All up to date! 🚀')
   },
 }
 
 export const help = () => {
-	console.log('\nAutorestic'.blue + ' - Easy Restic CLI Utility'
+  console.log(
-		+ '\n'
+    '\nAutorestic'.blue +
-		+ '\nOptions:'.yellow
+      ` - ${VERSION} - Easy Restic CLI Utility` +
-		+ '\n  -c, --config  [default=config.yml]                                    Specify config file'
+      '\n' +
-		+ '\n'
+      '\nOptions:'.yellow +
-		+ '\nCommands:'.yellow
+      `\n  -c, --config                                                          Specify config file. Default: .autorestic.yml` +
-		+ '\n  check    [-b, --backend]  [-a, --all]                                 Check backends'
+      '\n' +
-		+ '\n  backup   [-l, --location] [-a, --all]                                 Backup all or specified locations'
+      '\nCommands:'.yellow +
-		+ '\n  restore  [-l, --location] [-- --target <out dir>]                     Check backends'
+      '\n  check    [-b, --backend]  [-a, --all]                                 Check backends' +
-		+ '\n'
+      '\n  backup   [-l, --location] [-a, --all]                                 Backup all or specified locations' +
-		+ '\n  exec     [-b, --backend]  [-a, --all] <command> -- [native options]   Execute native restic command'
+      '\n  restore  [-l, --location] [-- --target <out dir>]                     Restore all or specified locations' +
-		+ '\n'
+      '\n' +
-		+ '\n  install                                                               install restic'
+      '\n  exec     [-b, --backend]  [-a, --all] <command> -- [native options]   Execute native restic command' +
-		+ '\n  uninstall                                                             uninstall restic'
+      '\n' +
-		+ '\n  update                                                                update restic'
+      '\n  install                                                               install restic' +
-		+ '\n  help                                                                  Show help'
+      '\n  uninstall                                                             uninstall restic' +
-		+ '\n'
+      '\n  update                                                                update restic' +
-		+ '\nExamples: '.yellow + 'https://git.io/fjVbg'
+      '\n  help                                                                  Show help' +
-		+ '\n',
+      '\n' +
+      '\nExamples: '.yellow +
+      'https://git.io/fjVbg' +
+      '\n'
   )
 }
 export const error = () => {
   help()
-	console.log(`Invalid Command:`.red.underline, `${process.argv.slice(2).join(' ')}`)
+  console.log(
+    `Invalid Command:`.red.underline,
+    `${process.argv.slice(2).join(' ')}`
+  )
 }
 
 export default handlers

src/types.ts

@@ -1,62 +1,69 @@
 type BackendLocal = {
-	type: 'local',
+  type: 'local'
-	key: string,
+  key: string
   path: string
 }
 
 type BackendSFTP = {
-	type: 'sftp',
+  type: 'sftp'
-	key: string,
+  key: string
-	path: string,
+  path: string
-	password?: string,
+  password?: string
 }
 
 type BackendREST = {
-	type: 'rest',
+  type: 'rest'
-	key: string,
+  key: string
-	path: string,
+  path: string
-	user?: string,
+  user?: string
   password?: string
 }
 
 type BackendS3 = {
-	type: 's3',
+  type: 's3'
-	key: string,
+  key: string
-	path: string,
+  path: string
-	aws_access_key_id: string,
+  aws_access_key_id: string
-	aws_secret_access_key: string,
+  aws_secret_access_key: string
 }
 
 type BackendB2 = {
-	type: 'b2',
+  type: 'b2'
-	key: string,
+  key: string
-	path: string,
+  path: string
-	b2_account_id: string,
+  b2_account_id: string
   b2_account_key: string
 }
 
 type BackendAzure = {
-	type: 'azure',
+  type: 'azure'
-	key: string,
+  key: string
-	path: string,
+  path: string
-	azure_account_name: string,
+  azure_account_name: string
   azure_account_key: string
 }
 
 type BackendGS = {
-	type: 'gs',
+  type: 'gs'
-	key: string,
+  key: string
-	path: string,
+  path: string
-	google_project_id: string,
+  google_project_id: string
   google_application_credentials: string
 }
 
-export type Backend = BackendAzure | BackendB2 | BackendGS | BackendLocal | BackendREST | BackendS3 | BackendSFTP
+export type Backend =
+  | BackendAzure
+  | BackendB2
+  | BackendGS
+  | BackendLocal
+  | BackendREST
+  | BackendS3
+  | BackendSFTP
 
 export type Backends = { [name: string]: Backend }
 
 export type Location = {
-	from: string,
+  from: string
   to: string | string[]
 }
 

src/utils.ts

@@ -1,8 +1,13 @@
+import axios from 'axios'
 import { spawnSync, SpawnSyncOptions } from 'child_process'
 import { randomBytes } from 'crypto'
+import { createWriteStream } from 'fs'
 
-export const exec = (command: string, args: string[], { env, ...rest }: SpawnSyncOptions = {}) => {
+export const exec = (
-
+  command: string,
+  args: string[],
+  { env, ...rest }: SpawnSyncOptions = {}
+) => {
   const cmd = spawnSync(command, args, {
     ...rest,
     env: {
@@ -17,10 +22,12 @@ export const exec = (command: string, args: string[], { env, ...rest }: SpawnSyn
   return { out, err }
 }
 
-export const checkIfResticIsAvailable = () => checkIfCommandIsAvailable(
+export const checkIfResticIsAvailable = () =>
+  checkIfCommandIsAvailable(
     'restic',
-	'Restic is not installed'.red + ' https://restic.readthedocs.io/en/latest/020_installation.html#stable-releases',
+    'Restic is not installed'.red +
-)
+      ' https://restic.readthedocs.io/en/latest/020_installation.html#stable-releases'
+  )
 
 export const checkIfCommandIsAvailable = (cmd: string, errorMsg?: string) => {
   if (require('child_process').spawnSync(cmd).error)
@@ -29,17 +36,42 @@ export const checkIfCommandIsAvailable = (cmd: string, errorMsg?: string) => {
 
 export const makeObjectKeysLowercase = (object: Object): any =>
   Object.fromEntries(
-		Object.entries(object)
+    Object.entries(object).map(([key, value]) => [key.toLowerCase(), value])
-			.map(([key, value]) => [key.toLowerCase(), value]),
   )
 
-
 export function rand(length = 32): string {
   return randomBytes(length / 2).toString('hex')
 }
 
-export const singleToArray = <T>(singleOrArray: T | T[]): T[] => Array.isArray(singleOrArray) ? singleOrArray : [singleOrArray]
+export const singleToArray = <T>(singleOrArray: T | T[]): T[] =>
+  Array.isArray(singleOrArray) ? singleOrArray : [singleOrArray]
 
-export const filterObject = <T>(obj: { [key: string]: T }, filter: (item: [string, T]) => boolean): { [key: string]: T } => Object.fromEntries(Object.entries(obj).filter(filter))
+export const filterObject = <T>(
+  obj: { [key: string]: T },
+  filter: (item: [string, T]) => boolean
+): { [key: string]: T } =>
+  Object.fromEntries(Object.entries(obj).filter(filter))
 
-export const filterObjectByKey = <T>(obj: { [key: string]: T }, keys: string[]) => filterObject(obj, ([key]) => keys.includes(key))
+export const filterObjectByKey = <T>(
+  obj: { [key: string]: T },
+  keys: string[]
+) => filterObject(obj, ([key]) => keys.includes(key))
+
+export const downloadFile = async (url: string, to: string) =>
+  new Promise<void>(async res => {
+    const { data: file } = await axios({
+      method: 'get',
+      url: url,
+      responseType: 'stream',
+    })
+
+    const stream = createWriteStream(to)
+
+    const writer = file.pipe(stream)
+    writer.on('close', () => {
+      stream.close()
+      res()
+    })
+  })
+
+export const ConfigError = new Error('Config file not found')