server/controllers/api/v1/videos.js

   1 'use strict'
   2
   3 const config = require('config')
   4 const crypto = require('crypto')
   5 const express = require('express')
   6 const multer = require('multer')
   7
   8 const logger = require('../../../helpers/logger')
   9 const friends = require('../../../lib/friends')
  10 const middleware = require('../../../middlewares')
  11 const oAuth2 = require('../../../middlewares/oauth2')
  12 const cacheMiddleware = middleware.cache
  13 const reqValidator = middleware.reqValidators.videos
  14 const Videos = require('../../../models/videos') // model
  15 const videos = require('../../../lib/videos')
  16 const webtorrent = require('../../../lib/webtorrent')
  17
  18 const router = express.Router()
  19 const uploads = config.get('storage.uploads')
  20
  21 // multer configuration
  22 const storage = multer.diskStorage({
  23   destination: function (req, file, cb) {
  24     cb(null, uploads)
  25   },
  26
  27   filename: function (req, file, cb) {
  28     let extension = ''
  29     if (file.mimetype === 'video/webm') extension = 'webm'
  30     else if (file.mimetype === 'video/mp4') extension = 'mp4'
  31     else if (file.mimetype === 'video/ogg') extension = 'ogv'
  32     crypto.pseudoRandomBytes(16, function (err, raw) {
  33       const fieldname = err ? undefined : raw.toString('hex')
  34       cb(null, fieldname + '.' + extension)
  35     })
  36   }
  37 })
  38
  39 const reqFiles = multer({ storage: storage }).fields([{ name: 'videofile', maxCount: 1 }])
  40
  41 router.get('/', cacheMiddleware.cache(false), listVideos)
  42 router.post('/', oAuth2.authenticate, reqFiles, reqValidator.videosAdd, cacheMiddleware.cache(false), addVideo)
  43 router.get('/:id', reqValidator.videosGet, cacheMiddleware.cache(false), getVideos)
  44 router.delete('/:id', oAuth2.authenticate, reqValidator.videosRemove, cacheMiddleware.cache(false), removeVideo)
  45 router.get('/search/:name', reqValidator.videosSearch, cacheMiddleware.cache(false), searchVideos)
  46
  47 // ---------------------------------------------------------------------------
  48
  49 module.exports = router
  50
  51 // ---------------------------------------------------------------------------
  52
  53 function addVideo (req, res, next) {
  54   const video_file = req.files.videofile[0]
  55   const video_infos = req.body
  56
  57   videos.seed(video_file.path, function (err, torrent) {
  58     if (err) {
  59       logger.error('Cannot seed this video.')
  60       return next(err)
  61     }
  62
  63     const video_data = {
  64       name: video_infos.name,
  65       namePath: video_file.filename,
  66       description: video_infos.description,
  67       magnetUri: torrent.magnetURI,
  68       author: res.locals.oauth.token.user.username
  69     }
  70
  71     Videos.add(video_data, function (err) {
  72       if (err) {
  73         // TODO unseed the video
  74         logger.error('Cannot insert this video in the database.')
  75         return next(err)
  76       }
  77
  78       // Now we'll add the video's meta data to our friends
  79       friends.addVideoToFriends(video_data)
  80
  81       // TODO : include Location of the new video -> 201
  82       res.type('json').status(204).end()
  83     })
  84   })
  85 }
  86
  87 function getVideos (req, res, next) {
  88   Videos.get(req.params.id, function (err, video_obj) {
  89     if (err) return next(err)
  90
  91     const state = videos.getVideoState(video_obj)
  92     if (state.exist === false) {
  93       return res.type('json').status(204).end()
  94     }
  95
  96     res.json(getFormatedVideo(video_obj))
  97   })
  98 }
  99
 100 function listVideos (req, res, next) {
 101   Videos.list(function (err, videos_list) {
 102     if (err) return next(err)
 103
 104     res.json(getFormatedVideos(videos_list))
 105   })
 106 }
 107
 108 function removeVideo (req, res, next) {
 109   const video_id = req.params.id
 110   Videos.get(video_id, function (err, video) {
 111     if (err) return next(err)
 112
 113     removeTorrent(video.magnetUri, function () {
 114       Videos.removeOwned(req.params.id, function (err) {
 115         if (err) return next(err)
 116
 117         const params = {
 118           name: video.name,
 119           magnetUri: video.magnetUri
 120         }
 121
 122         friends.removeVideoToFriends(params)
 123         res.type('json').status(204).end()
 124       })
 125     })
 126   })
 127 }
 128
 129 function searchVideos (req, res, next) {
 130   Videos.search(req.params.name, function (err, videos_list) {
 131     if (err) return next(err)
 132
 133     res.json(getFormatedVideos(videos_list))
 134   })
 135 }
 136
 137 // ---------------------------------------------------------------------------
 138
 139 function getFormatedVideo (video_obj) {
 140   const formated_video = {
 141     id: video_obj._id,
 142     name: video_obj.name,
 143     description: video_obj.description,
 144     podUrl: video_obj.podUrl,
 145     isLocal: videos.getVideoState(video_obj).owned,
 146     magnetUri: video_obj.magnetUri,
 147     author: video_obj.author
 148   }
 149
 150   return formated_video
 151 }
 152
 153 function getFormatedVideos (videos_obj) {
 154   const formated_videos = []
 155
 156   videos_obj.forEach(function (video_obj) {
 157     formated_videos.push(getFormatedVideo(video_obj))
 158   })
 159
 160   return formated_videos
 161 }
 162
 163 // Maybe the torrent is not seeded, but we catch the error to don't stop the removing process
 164 function removeTorrent (magnetUri, callback) {
 165   try {
 166     webtorrent.remove(magnetUri, callback)
 167   } catch (err) {
 168     logger.warn('Cannot remove the torrent from WebTorrent', { err: err })
 169     return callback(null)
 170   }
 171 }