import { readFileSync, writeFileSync } from 'fs'
import * as parseTorrent from 'parse-torrent'

import { CONFIG, STATIC_PATHS } from '../server/initializers/constants'
import { database as db } from '../server/initializers/database'
import { hasFriends } from '../server/lib/friends'

db.init(true, function () {
  hasFriends(function (err, itHasFriends) {
    if (err) throw err

    if (itHasFriends === true) {
      console.log('Cannot update host because you have friends!')
      process.exit(-1)
    }

    console.log('Updating torrent files.')
    db.Video.list(function (err, videos) {
      if (err) throw err

      videos.forEach(function (video) {
        const torrentName = video.id + '.torrent'
        const torrentPath = CONFIG.STORAGE.TORRENTS_DIR + torrentName
        const filename = video.id + video.extname

        const parsed = parseTorrent(readFileSync(torrentPath))
        parsed.announce = [ CONFIG.WEBSERVER.WS + '://' + CONFIG.WEBSERVER.HOST + '/tracker/socket' ]
        parsed.urlList = [ CONFIG.WEBSERVER.URL + STATIC_PATHS.WEBSEED + filename ]

        const buf = parseTorrent.toTorrentFile(parsed)
        writeFileSync(torrentPath, buf)
      })

      process.exit(0)
    })
  })
})