Gera JSON com infos de Seeds e Leechs no tracker OpenBittorrent para todo .torrent em uma pasta

inspect-torrents-folder.coffee

#author: Rafael Polo
#language: CoffeeScript
#todo: 
  # remover repetidos
  # considerar possíveis Peers vindos da DHT | distributed hash table
  # parametrizar listar apenas com mais de 1 seed
  # consultar outros Trackers usando API do torrentz.eu

Torrent = require('nt')
Tracker = require('node-tracker')
Promise = require('bluebird');
FS = require('fs');

# get openbittorrent Tracker response
scrapeOBT = (hash) ->
  new Promise((resolve, reject) ->
    response = {}
    test = new Tracker("udp://tracker.openbittorrent.com:80/announce")
    test.scrape [hash], (err, msg) ->
      return 0 if err
      response = {}
      response["seeds"] = msg[hash]['seeders']
      response["leechs"] = msg[hash]['leechers']
      response["downloads"] = msg[hash]['completed']
      resolve response
)

# scrape all files from folder
folder = "./torrents"
files = FS.readdirSync(folder)
async = []

for file in files
  async.push new Promise((resolve, reject) ->
    tr = Torrent.read "#{folder}/#{file}", (err, torrent) ->
      return 0 if err
      result = {}
      hash = torrent.infoHash()
      name = torrent.metadata['info']['name']
      scrapeOBT(hash).then(
        (response) ->
          result[name] = {}
          result[name]["seeds"] = response["seeds"]
          result[name]["leechs"] = response["leechs"]
          result[name]["downloads"] = response["downloads"]
          console.log result
          resolve result
      )
  )

Promise.all(async).then(
  (results) ->
    FS.writeFile 'results.json', JSON.stringify(results), (err) ->
      process.exit(0)
)