controllers/api/v1/videos.js

   1 'use strict'
   2
   3 var config = require('config')
   4 var crypto = require('crypto')
   5 var express = require('express')
   6 var multer = require('multer')
   7
   8 var logger = require('../../../helpers/logger')
   9 var friends = require('../../../lib/friends')
  10 var middleware = require('../../../middlewares')
  11 var cacheMiddleware = middleware.cache
  12 var reqValidator = middleware.reqValidators.videos
  13 var Videos = require('../../../models/videos') // model
  14 var videos = require('../../../lib/videos')
  15 var webtorrent = require('../../../lib/webtorrent')
  16
  17 var router = express.Router()
  18 var uploads = config.get('storage.uploads')
  19
  20 // multer configuration
  21 var storage = multer.diskStorage({
  22   destination: function (req, file, cb) {
  23     cb(null, uploads)
  24   },
  25
  26   filename: function (req, file, cb) {
  27     var extension = ''
  28     if (file.mimetype === 'video/webm') extension = 'webm'
  29     else if (file.mimetype === 'video/mp4') extension = 'mp4'
  30     else if (file.mimetype === 'video/ogg') extension = 'ogv'
  31     crypto.pseudoRandomBytes(16, function (err, raw) {
  32       var fieldname = err ? undefined : raw.toString('hex')
  33       cb(null, fieldname + '.' + extension)
  34     })
  35   }
  36 })
  37
  38 var reqFiles = multer({ storage: storage }).fields([{ name: 'input_video', maxCount: 1 }])
  39
  40 router.get('/', cacheMiddleware.cache(false), listVideos)
  41 router.post('/', reqFiles, reqValidator.videosAdd, cacheMiddleware.cache(false), addVideo)
  42 router.get('/:id', reqValidator.videosGet, cacheMiddleware.cache(false), getVideos)
  43 router.delete('/:id', reqValidator.videosRemove, cacheMiddleware.cache(false), removeVideo)
  44 router.get('/search/:name', reqValidator.videosSearch, cacheMiddleware.cache(false), searchVideos)
  45
  46 // ---------------------------------------------------------------------------
  47
  48 module.exports = router
  49
  50 // ---------------------------------------------------------------------------
  51
  52 function addVideo (req, res, next) {
  53   var video_file = req.files.input_video[0]
  54   var video_infos = req.body
  55
  56   videos.seed(video_file.path, function (err, torrent) {
  57     if (err) {
  58       logger.error('Cannot seed this video.')
  59       return next(err)
  60     }
  61
  62     var video_data = {
  63       name: video_infos.name,
  64       namePath: video_file.filename,
  65       description: video_infos.description,
  66       magnetUri: torrent.magnetURI
  67     }
  68
  69     Videos.add(video_data, function (err) {
  70       if (err) {
  71         // TODO unseed the video
  72         logger.error('Cannot insert this video in the database.')
  73         return next(err)
  74       }
  75
  76       // Now we'll add the video's meta data to our friends
  77       friends.addVideoToFriends(video_data)
  78
  79       // TODO : include Location of the new video
  80       res.sendStatus(201)
  81     })
  82   })
  83 }
  84
  85 function getVideos (req, res, next) {
  86   Videos.get(req.params.id, function (err, video) {
  87     if (err) return next(err)
  88
  89     if (video === null) {
  90       return res.sendStatus(404)
  91     }
  92
  93     res.json(video)
  94   })
  95 }
  96
  97 function listVideos (req, res, next) {
  98   Videos.list(function (err, videos_list) {
  99     if (err) return next(err)
 100
 101     res.json(videos_list)
 102   })
 103 }
 104
 105 function removeVideo (req, res, next) {
 106   var video_id = req.params.id
 107   Videos.get(video_id, function (err, video) {
 108     if (err) return next(err)
 109
 110     removeTorrent(video.magnetUri, function () {
 111       Videos.removeOwned(req.params.id, function (err) {
 112         if (err) return next(err)
 113
 114         var params = {
 115           name: video.name,
 116           magnetUri: video.magnetUri
 117         }
 118
 119         friends.removeVideoToFriends(params)
 120         res.sendStatus(204)
 121       })
 122     })
 123   })
 124 }
 125
 126 function searchVideos (req, res, next) {
 127   Videos.search(req.params.name, function (err, videos_list) {
 128     if (err) return next(err)
 129
 130     res.json(videos_list)
 131   })
 132 }
 133
 134 // ---------------------------------------------------------------------------
 135
 136 // Maybe the torrent is not seeded, but we catch the error to don't stop the removing process
 137 function removeTorrent (magnetUri, callback) {
 138   try {
 139     webtorrent.remove(magnetUri, callback)
 140   } catch (err) {
 141     logger.warn('Cannot remove the torrent from WebTorrent', { err: err })
 142     return callback(null)
 143   }
 144 }