aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/models/video.js
blob: 14bc91b16fefa575c90248809ec33d9933e262ee (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
'use strict'

const config = require('config')
const eachLimit = require('async/eachLimit')
const ffmpeg = require('fluent-ffmpeg')
const fs = require('fs')
const parallel = require('async/parallel')
const pathUtils = require('path')
const mongoose = require('mongoose')

const constants = require('../initializers/constants')
const customVideosValidators = require('../helpers/custom-validators').videos
const logger = require('../helpers/logger')
const utils = require('../helpers/utils')
const webtorrent = require('../lib/webtorrent')

const http = config.get('webserver.https') === true ? 'https' : 'http'
const host = config.get('webserver.host')
const port = config.get('webserver.port')
const uploadsDir = pathUtils.join(__dirname, '..', '..', config.get('storage.uploads'))
const thumbnailsDir = pathUtils.join(__dirname, '..', '..', config.get('storage.thumbnails'))

// ---------------------------------------------------------------------------

// TODO: add indexes on searchable columns
const VideoSchema = mongoose.Schema({
  name: String,
  filename: String,
  description: String,
  magnetUri: String,
  podUrl: String,
  author: String,
  duration: Number,
  thumbnail: String,
  tags: [ String ],
  createdDate: {
    type: Date,
    default: Date.now
  }
})

VideoSchema.path('name').validate(customVideosValidators.isVideoNameValid)
VideoSchema.path('description').validate(customVideosValidators.isVideoDescriptionValid)
VideoSchema.path('magnetUri').validate(customVideosValidators.isVideoMagnetUriValid)
VideoSchema.path('podUrl').validate(customVideosValidators.isVideoPodUrlValid)
VideoSchema.path('author').validate(customVideosValidators.isVideoAuthorValid)
VideoSchema.path('duration').validate(customVideosValidators.isVideoDurationValid)
// The tumbnail can be the path or the data in base 64
// The pre save hook will convert the base 64 data in a file on disk and replace the thumbnail key by the filename
VideoSchema.path('thumbnail').validate(function (value) {
  return customVideosValidators.isVideoThumbnailValid(value) || customVideosValidators.isVideoThumbnail64Valid(value)
})
VideoSchema.path('tags').validate(customVideosValidators.isVideoTagsValid)

VideoSchema.methods = {
  isOwned: isOwned,
  toFormatedJSON: toFormatedJSON,
  toRemoteJSON: toRemoteJSON
}

VideoSchema.statics = {
  getDurationFromFile: getDurationFromFile,
  list: list,
  listByUrlAndMagnet: listByUrlAndMagnet,
  listByUrls: listByUrls,
  listOwned: listOwned,
  listOwnedByAuthor: listOwnedByAuthor,
  listRemotes: listRemotes,
  load: load,
  search: search,
  seedAllExisting: seedAllExisting
}

VideoSchema.pre('remove', function (next) {
  const video = this
  const tasks = []

  tasks.push(
    function (callback) {
      removeThumbnail(video, callback)
    }
  )

  if (video.isOwned()) {
    tasks.push(
      function (callback) {
        removeFile(video, callback)
      },
      function (callback) {
        removeTorrent(video, callback)
      }
    )
  }

  parallel(tasks, next)
})

VideoSchema.pre('save', function (next) {
  const video = this
  const tasks = []

  if (video.isOwned()) {
    const videoPath = pathUtils.join(uploadsDir, video.filename)
    this.podUrl = http + '://' + host + ':' + port

    tasks.push(
      function (callback) {
        seed(videoPath, callback)
      },
      function (callback) {
        createThumbnail(videoPath, callback)
      }
    )

    parallel(tasks, function (err, results) {
      if (err) return next(err)

      video.magnetUri = results[0].magnetURI
      video.thumbnail = results[1]

      return next()
    })
  } else {
    generateThumbnailFromBase64(video.thumbnail, function (err, thumbnailName) {
      if (err) return next(err)

      video.thumbnail = thumbnailName

      return next()
    })
  }
})

mongoose.model('Video', VideoSchema)

// ------------------------------ METHODS ------------------------------

function isOwned () {
  return this.filename !== null
}

function toFormatedJSON () {
  const json = {
    id: this._id,
    name: this.name,
    description: this.description,
    podUrl: this.podUrl.replace(/^https?:\/\//, ''),
    isLocal: this.isOwned(),
    magnetUri: this.magnetUri,
    author: this.author,
    duration: this.duration,
    tags: this.tags,
    thumbnailPath: constants.THUMBNAILS_STATIC_PATH + '/' + this.thumbnail,
    createdDate: this.createdDate
  }

  return json
}

function toRemoteJSON (callback) {
  const self = this

  // Convert thumbnail to base64
  fs.readFile(pathUtils.join(thumbnailsDir, this.thumbnail), function (err, thumbnailData) {
    if (err) {
      logger.error('Cannot read the thumbnail of the video')
      return callback(err)
    }

    const remoteVideo = {
      name: self.name,
      description: self.description,
      magnetUri: self.magnetUri,
      filename: null,
      author: self.author,
      duration: self.duration,
      thumbnailBase64: new Buffer(thumbnailData).toString('base64'),
      tags: self.tags,
      createdDate: self.createdDate,
      podUrl: self.podUrl
    }

    return callback(null, remoteVideo)
  })
}

// ------------------------------ STATICS ------------------------------

function getDurationFromFile (videoPath, callback) {
  ffmpeg.ffprobe(videoPath, function (err, metadata) {
    if (err) return callback(err)

    return callback(null, Math.floor(metadata.format.duration))
  })
}

function list (start, count, sort, callback) {
  const query = {}
  return findWithCount.call(this, query, start, count, sort, callback)
}

function listByUrlAndMagnet (fromUrl, magnetUri, callback) {
  this.find({ podUrl: fromUrl, magnetUri: magnetUri }, callback)
}

function listByUrls (fromUrls, callback) {
  this.find({ podUrl: { $in: fromUrls } }, callback)
}

function listOwned (callback) {
  // If filename is not null this is *our* video
  this.find({ filename: { $ne: null } }, callback)
}

function listOwnedByAuthor (author, callback) {
  this.find({ filename: { $ne: null }, author: author }, callback)
}

function listRemotes (callback) {
  this.find({ filename: null }, callback)
}

function load (id, callback) {
  this.findById(id, callback)
}

function search (value, field, start, count, sort, callback) {
  const query = {}
  // Make an exact search with the magnet
  if (field === 'magnetUri' || field === 'tags') {
    query[field] = value
  } else {
    query[field] = new RegExp(value)
  }

  findWithCount.call(this, query, start, count, sort, callback)
}

function seedAllExisting (callback) {
  listOwned.call(this, function (err, videos) {
    if (err) return callback(err)

    eachLimit(videos, constants.SEEDS_IN_PARALLEL, function (video, callbackEach) {
      const videoPath = pathUtils.join(uploadsDir, video.filename)
      seed(videoPath, callbackEach)
    }, callback)
  })
}

// ---------------------------------------------------------------------------

function findWithCount (query, start, count, sort, callback) {
  const self = this

  parallel([
    function (asyncCallback) {
      self.find(query).skip(start).limit(count).sort(sort).exec(asyncCallback)
    },
    function (asyncCallback) {
      self.count(query, asyncCallback)
    }
  ], function (err, results) {
    if (err) return callback(err)

    const videos = results[0]
    const totalVideos = results[1]
    return callback(null, videos, totalVideos)
  })
}

function removeThumbnail (video, callback) {
  fs.unlink(thumbnailsDir + video.thumbnail, callback)
}

function removeFile (video, callback) {
  fs.unlink(uploadsDir + video.filename, callback)
}

// Maybe the torrent is not seeded, but we catch the error to don't stop the removing process
function removeTorrent (video, callback) {
  try {
    webtorrent.remove(video.magnetUri, callback)
  } catch (err) {
    logger.warn('Cannot remove the torrent from WebTorrent', { err: err })
    return callback(null)
  }
}

function createThumbnail (videoPath, callback) {
  const filename = pathUtils.basename(videoPath) + '.jpg'
  ffmpeg(videoPath)
    .on('error', callback)
    .on('end', function () {
      callback(null, filename)
    })
    .thumbnail({
      count: 1,
      folder: thumbnailsDir,
      size: constants.THUMBNAILS_SIZE,
      filename: filename
    })
}

function seed (path, callback) {
  logger.info('Seeding %s...', path)

  webtorrent.seed(path, function (torrent) {
    logger.info('%s seeded (%s).', path, torrent.magnetURI)

    return callback(null, torrent)
  })
}

function generateThumbnailFromBase64 (data, callback) {
  // Creating the thumbnail for this remote video
  utils.generateRandomString(16, function (err, randomString) {
    if (err) return callback(err)

    const thumbnailName = randomString + '.jpg'
    fs.writeFile(thumbnailsDir + thumbnailName, data, { encoding: 'base64' }, function (err) {
      if (err) return callback(err)

      return callback(null, thumbnailName)
    })
  })
}