qbittorrent bulkEditTracker

bulkEditTracker.js

// See more on https://github.com/qbittorrent/qBittorrent/issues/11868

/**
 * The old tracker URL, which could be a string or regex.
 */
const OLD_TRACKER = ''

/**
 * The new tracker URL.
 */
const NEW_TRACKER = ''

/**
 * The API endpoints for the torrent info and tracker edit requests.
 */
const Api = {
  torrentsInfo: '/api/v2/torrents/info',
  editTracker: '/api/v2/torrents/editTracker',
}

/**
 * Gets information about all available torrents.
 *
 * @returns {Promise} A promise that resolves to the JSON response from the server.
 */
const getTorrentsInfo = async () => {
  const res = await fetch(Api.torrentsInfo)

  if (res.status !== 200) {
    const text = await res.text()
    console.error(`Request error with status: ${res.status}`, text)
    throw new Error(`Request error with status: ${res.status}`)
  }

  const body = await res.json()

  return body
}

/**
 * Edits the tracker URL of a given torrent.
 *
 * @param {string} torrentHash - The hash of the torrent to be edited.
 * @param {string} oldTracker - The old tracker URL, which could be a string or regex.
 * @param {string} newTracker - The new tracker URL.
 * @returns {Promise} A promise that resolves to the text response from the server.
 */
const editTracker = async (torrentHash, oldTracker, newTracker) => {
  const res = await fetch(Api.editTracker, {
    body: new URLSearchParams({
      hash: torrentHash,
      origUrl: oldTracker,
      newUrl: newTracker,
    }),
    method: 'POST'
  })

  const text = await res.text()

  if (res.status !== 200) {
    console.error(`Request error with status: ${res.status}`, text)
    throw new Error(`Request error with status: ${res.status}`)
  }

  return text
}

/**
 * Edits the tracker URL of all torrents matching the specified old tracker URL.
 *
 * @param {string|RegExp} oldTracker - The old tracker URL, which could be a string or regex.
 * @param {string} newTracker - The new tracker URL.
 * @returns {Promise} A promise that resolves when all the tracker edits are complete.
 */
const bulkEditTracker = async (oldTracker, newTracker) => {
  const torrents = await getTorrentsInfo()

  console.debug('All torrents', torrents)

  const isRegExp = Object.prototype.toString.call(oldTracker) === '[object RegExp]'

  const filterFn = isRegExp ?
    ({ tracker }) => oldTracker.test(tracker) :
    ({ tracker }) => `${oldTracker}` === tracker

  const targets = torrents.filter(filterFn)

  console.debug('Target torrents', targets)

  const proceed = confirm(`Confirm to update tracker of ${targets.length} torrents?`)

  if (!proceed) {
    return
  }

  for (const torrent of targets) {
    const r = await editTracker(torrent.hash, torrent.tracker, newTracker)

    console.debug('Edit result', torrent.hash, torrent.tracker, newTracker, r)
  }
}

bulkEditTracker(OLD_TRACKER, NEW_TRACKER)
  .then(() => {
    console.log('Finish')
  }, err => {
    console.error(err)
  })