import * as fs from 'fs'
import { pluginName } from '../helpers'

type LogMode = 'debug' | 'info'

/**
 * Creates the working dir if needed, and returns it.
 * NB: for now, I try to create a directory in /tmp/.
 * To ensure that there is no conflict with another peertube instance,
 * I used a randomly generated id that will be stored in database.
 */
async function getWorkingDir ({ peertubeHelpers, storageManager }: RegisterServerOptions): Promise<string> {
  const tmpBaseDir = '/tmp/'
  await fs.promises.access(tmpBaseDir, fs.constants.W_OK) // will throw an error if no access
  let value: string = await storageManager.getData('tempDirId')
  while (!value) {
    peertubeHelpers.logger.info('Generating an id for temp dir')
    value = Math.random().toString(36).slice(2, 12)
    const name = tmpBaseDir + pluginName + '-' + value
    if (fs.existsSync(name)) {
      peertubeHelpers.logger.info('The folder ' + name + ' already exists, generating another name...')
      value = ''
      continue
    }
    await storageManager.storeData('tempDirId', value)
  }

  const name = tmpBaseDir + pluginName + '-' + value
  if (!fs.existsSync(name)) {
    await fs.promises.mkdir(name)
  }
  await fs.promises.access(name, fs.constants.W_OK) // will throw an error if no access
  return name
}

async function getProsodyConfig (_options: RegisterServerOptions): Promise<string> {
  const peertubeDomain = 'localhost'
  const workingDirectory = '/tmp/'
  const logMode: LogMode = 'debug'
  return `

admins = { }
plugin_paths = { }

modules_enabled = {
  "version"; -- Replies to server version requests
  "uptime"; -- Report how long server has been running
  "ping"; -- Replies to XMPP pings with pongs

  "bosh"; -- Enable BOSH clients, aka "Jabber over HTTP"
  -- "websocket"; -- XMPP over WebSockets

  "posix"; -- POSIX functionality, sends server to background, enables syslog, etc.
}
modules_disabled = {
    "offline"; -- Store offline messages
    "c2s"; -- Handle client connections
    "s2s"; -- Handle server-to-server connections
}

allow_registration = false

daemonize = true;

pidfile = "${workingDirectory}prosody.pid";

c2s_require_encryption = false

archive_expires_after = "1w" -- Remove archived messages after 1 week

log = {
  -- Log files (change 'info' to 'debug' for debug logs):
  ${logMode} = "${workingDirectory}prosody.log";
  error = "${workingDirectory}prosody.err";
  -- Syslog:
  -- { levels = { "error" }; to = "syslog";  };
}

cross_domain_bosh = false;
consider_bosh_secure = true;
cross_domain_websocket = false;
consider_websocket_secure = true;

VirtualHost "anon.localhost"
  https_ports = {};
  trusted_proxies = { "127.0.0.1", "::1" }

  authentication = "anonymous"
  allow_anonymous_s2s = false
  modules_enabled = {
    "http";
    "bosh";
    "ping";
  }
  http_host = "${peertubeDomain}"
  http_external_url = "http://${peertubeDomain}"

Component "room.localhost" "muc"
  restrict_room_creation = "local"
  muc_room_locking = false
  muc_tombstones = false
  muc_room_default_language = "en"
  muc_room_default_public = true
  muc_room_default_persistent = false
  muc_room_default_members_only = false
  muc_room_default_moderated = false
  muc_room_default_public_jids = false
  muc_room_default_change_subject = false
  muc_room_default_history_length = 20
`
}

export {
  getProsodyConfig,
  getWorkingDir
}