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'use strict'
const config = require('config')
const ipc = require('node-ipc')
const pathUtils = require('path')
const spawn = require('electron-spawn')
const logger = require('../helpers/logger')
const electronDebug = config.get('electron.debug')
let host = config.get('webserver.host')
let port = config.get('webserver.port')
let nodeKey = 'webtorrentnode' + port
let processKey = 'webtorrentprocess' + port
ipc.config.silent = true
ipc.config.id = nodeKey
const webtorrent = {
add: add,
app: null, // Pid of the app
create: create,
remove: remove,
seed: seed,
silent: false // Useful for beautiful tests
}
function create (options, callback) {
if (typeof options === 'function') {
callback = options
options = {}
}
// Override options
if (options.host) host = options.host
if (options.port) {
port = options.port
nodeKey = 'webtorrentnode' + port
processKey = 'webtorrentprocess' + port
ipc.config.id = nodeKey
}
ipc.serve(function () {
if (!webtorrent.silent) logger.info('IPC server ready.')
// Run a timeout of 30s after which we exit the process
const timeoutWebtorrentProcess = setTimeout(function () {
throw new Error('Timeout : cannot run the webtorrent process. Please ensure you have electron-prebuilt npm package installed with xvfb-run.')
}, 30000)
ipc.server.on(processKey + '.ready', function () {
if (!webtorrent.silent) logger.info('Webtorrent process ready.')
clearTimeout(timeoutWebtorrentProcess)
callback()
})
ipc.server.on(processKey + '.exception', function (data) {
throw new Error('Received exception error from webtorrent process : ' + data.exception)
})
const webtorrentProcess = spawn(pathUtils.join(__dirname, 'webtorrent-process.js'), host, port, { detached: true })
if (electronDebug === true) {
webtorrentProcess.stderr.on('data', function (data) {
logger.debug('Webtorrent process stderr: ', data.toString())
})
webtorrentProcess.stdout.on('data', function (data) {
logger.debug('Webtorrent process:', data.toString())
})
}
webtorrent.app = webtorrentProcess
})
ipc.server.start()
}
function seed (path, callback) {
const extension = pathUtils.extname(path)
const basename = pathUtils.basename(path, extension)
const data = {
_id: basename,
args: {
path: path
}
}
if (!webtorrent.silent) logger.debug('Node wants to seed %s.', data._id)
// Finish signal
const eventKey = nodeKey + '.seedDone.' + data._id
ipc.server.on(eventKey, function listener (received) {
if (!webtorrent.silent) logger.debug('Process seeded torrent %s.', received.magnetUri)
// This is a fake object, we just use the magnetUri in this project
const torrent = {
magnetURI: received.magnetUri
}
ipc.server.off(eventKey)
callback(torrent)
})
ipc.server.broadcast(processKey + '.seed', data)
}
function add (magnetUri, callback) {
const data = {
_id: magnetUri,
args: {
magnetUri: magnetUri
}
}
if (!webtorrent.silent) logger.debug('Node wants to add ' + data._id)
// Finish signal
const eventKey = nodeKey + '.addDone.' + data._id
ipc.server.on(eventKey, function (received) {
if (!webtorrent.silent) logger.debug('Process added torrent.')
// This is a fake object, we just use the magnetUri in this project
const torrent = {
files: received.files
}
ipc.server.off(eventKey)
callback(torrent)
})
ipc.server.broadcast(processKey + '.add', data)
}
function remove (magnetUri, callback) {
const data = {
_id: magnetUri,
args: {
magnetUri: magnetUri
}
}
if (!webtorrent.silent) logger.debug('Node wants to stop seeding %s.', data._id)
// Finish signal
const eventKey = nodeKey + '.removeDone.' + data._id
ipc.server.on(eventKey, function (received) {
if (!webtorrent.silent) logger.debug('Process removed torrent %s.', data._id)
let err = null
if (received.err) err = received.err
ipc.server.off(eventKey)
callback(err)
})
ipc.server.broadcast(processKey + '.remove', data)
}
// ---------------------------------------------------------------------------
module.exports = webtorrent
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