server/controllers/api/v1/videos.js

   1 'use strict'
   2
   3 const config = require('config')
   4 const express = require('express')
   5 const fs = require('fs')
   6 const path = require('path')
   7 const multer = require('multer')
   8
   9 const constants = require('../../../initializers/constants')
  10 const logger = require('../../../helpers/logger')
  11 const friends = require('../../../lib/friends')
  12 const middlewares = require('../../../middlewares')
  13 const oAuth2 = middlewares.oauth2
  14 const pagination = middlewares.pagination
  15 const reqValidator = middlewares.reqValidators
  16 const reqValidatorPagination = reqValidator.pagination
  17 const reqValidatorVideos = reqValidator.videos
  18 const utils = require('../../../helpers/utils')
  19 const Videos = require('../../../models/videos') // model
  20 const videos = require('../../../lib/videos')
  21 const webtorrent = require('../../../lib/webtorrent')
  22
  23 const router = express.Router()
  24 const uploads = config.get('storage.uploads')
  25
  26 // multer configuration
  27 const storage = multer.diskStorage({
  28   destination: function (req, file, cb) {
  29     cb(null, uploads)
  30   },
  31
  32   filename: function (req, file, cb) {
  33     let extension = ''
  34     if (file.mimetype === 'video/webm') extension = 'webm'
  35     else if (file.mimetype === 'video/mp4') extension = 'mp4'
  36     else if (file.mimetype === 'video/ogg') extension = 'ogv'
  37     utils.generateRandomString(16, function (err, randomString) {
  38       const fieldname = err ? undefined : randomString
  39       cb(null, fieldname + '.' + extension)
  40     })
  41   }
  42 })
  43
  44 const reqFiles = multer({ storage: storage }).fields([{ name: 'videofile', maxCount: 1 }])
  45 const thumbnailsDir = path.join(__dirname, '..', '..', '..', '..', config.get('storage.thumbnails'))
  46
  47 router.get('/',
  48   reqValidatorPagination.pagination,
  49   pagination.setPagination,
  50   listVideos
  51 )
  52 router.post('/',
  53   oAuth2.authenticate,
  54   reqFiles,
  55   reqValidatorVideos.videosAdd,
  56   addVideo
  57 )
  58 router.get('/:id',
  59   reqValidatorVideos.videosGet,
  60   getVideos
  61 )
  62 router.delete('/:id',
  63   oAuth2.authenticate,
  64   reqValidatorVideos.videosRemove,
  65   removeVideo
  66 )
  67 router.get('/search/:name',
  68   reqValidatorVideos.videosSearch,
  69   reqValidatorPagination.pagination,
  70   pagination.setPagination,
  71   searchVideos
  72 )
  73
  74 // ---------------------------------------------------------------------------
  75
  76 module.exports = router
  77
  78 // ---------------------------------------------------------------------------
  79
  80 function addVideo (req, res, next) {
  81   const videoFile = req.files.videofile[0]
  82   const videoInfos = req.body
  83
  84   videos.seed(videoFile.path, function (err, torrent) {
  85     if (err) {
  86       logger.error('Cannot seed this video.')
  87       return next(err)
  88     }
  89
  90     videos.getVideoDuration(videoFile.path, function (err, duration) {
  91       if (err) {
  92         // TODO: unseed the video
  93         logger.error('Cannot retrieve metadata of the file.')
  94         return next(err)
  95       }
  96
  97       videos.getVideoThumbnail(videoFile.path, function (err, thumbnailName) {
  98         if (err) {
  99           // TODO: unseed the video
 100           logger.error('Cannot make a thumbnail of the video file.')
 101           return next(err)
 102         }
 103
 104         const videoData = {
 105           name: videoInfos.name,
 106           namePath: videoFile.filename,
 107           description: videoInfos.description,
 108           magnetUri: torrent.magnetURI,
 109           author: res.locals.oauth.token.user.username,
 110           duration: duration,
 111           thumbnail: thumbnailName
 112         }
 113
 114         Videos.add(videoData, function (err) {
 115           if (err) {
 116             // TODO unseed the video
 117             logger.error('Cannot insert this video in the database.')
 118             return next(err)
 119           }
 120
 121           fs.readFile(thumbnailsDir + thumbnailName, function (err, data) {
 122             if (err) {
 123               // TODO: remove video?
 124               logger.error('Cannot read the thumbnail of the video')
 125               return next(err)
 126             }
 127
 128             // Set the image in base64
 129             videoData.thumbnailBase64 = new Buffer(data).toString('base64')
 130             // Now we'll add the video's meta data to our friends
 131             friends.addVideoToFriends(videoData)
 132
 133             // TODO : include Location of the new video -> 201
 134             res.type('json').status(204).end()
 135           })
 136         })
 137       })
 138     })
 139   })
 140 }
 141
 142 function getVideos (req, res, next) {
 143   Videos.get(req.params.id, function (err, videoObj) {
 144     if (err) return next(err)
 145
 146     const state = videos.getVideoState(videoObj)
 147     if (state.exist === false) {
 148       return res.type('json').status(204).end()
 149     }
 150
 151     res.json(getFormatedVideo(videoObj))
 152   })
 153 }
 154
 155 function listVideos (req, res, next) {
 156   Videos.list(req.query.start, req.query.count, function (err, videosList) {
 157     if (err) return next(err)
 158
 159     res.json(getFormatedVideos(videosList))
 160   })
 161 }
 162
 163 function removeVideo (req, res, next) {
 164   const videoId = req.params.id
 165   Videos.get(videoId, function (err, video) {
 166     if (err) return next(err)
 167
 168     removeTorrent(video.magnetUri, function () {
 169       Videos.removeOwned(req.params.id, function (err) {
 170         if (err) return next(err)
 171
 172         videos.removeVideosDataFromDisk([ video ], function (err) {
 173           if (err) logger.error('Cannot remove video data from disk.', { video: video })
 174
 175           const params = {
 176             name: video.name,
 177             magnetUri: video.magnetUri
 178           }
 179
 180           friends.removeVideoToFriends(params)
 181           res.type('json').status(204).end()
 182         })
 183       })
 184     })
 185   })
 186 }
 187
 188 function searchVideos (req, res, next) {
 189   Videos.search(req.params.name, req.query.start, req.query.count, function (err, videosList) {
 190     if (err) return next(err)
 191
 192     res.json(getFormatedVideos(videosList))
 193   })
 194 }
 195
 196 // ---------------------------------------------------------------------------
 197
 198 function getFormatedVideo (videoObj) {
 199   const formatedVideo = {
 200     id: videoObj._id,
 201     name: videoObj.name,
 202     description: videoObj.description,
 203     podUrl: videoObj.podUrl,
 204     isLocal: videos.getVideoState(videoObj).owned,
 205     magnetUri: videoObj.magnetUri,
 206     author: videoObj.author,
 207     duration: videoObj.duration,
 208     thumbnailPath: constants.THUMBNAILS_STATIC_PATH + '/' + videoObj.thumbnail
 209   }
 210
 211   return formatedVideo
 212 }
 213
 214 function getFormatedVideos (videosObj) {
 215   const formatedVideos = []
 216
 217   videosObj.forEach(function (videoObj) {
 218     formatedVideos.push(getFormatedVideo(videoObj))
 219   })
 220
 221   return formatedVideos
 222 }
 223
 224 // Maybe the torrent is not seeded, but we catch the error to don't stop the removing process
 225 function removeTorrent (magnetUri, callback) {
 226   try {
 227     webtorrent.remove(magnetUri, callback)
 228   } catch (err) {
 229     logger.warn('Cannot remove the torrent from WebTorrent', { err: err })
 230     return callback(null)
 231   }
 232 }