server/models/video.js

   1 'use strict'
   2
   3 const Buffer = require('safe-buffer').Buffer
   4 const createTorrent = require('create-torrent')
   5 const ffmpeg = require('fluent-ffmpeg')
   6 const fs = require('fs')
   7 const magnetUtil = require('magnet-uri')
   8 const map = require('lodash/map')
   9 const parallel = require('async/parallel')
  10 const parseTorrent = require('parse-torrent')
  11 const pathUtils = require('path')
  12 const values = require('lodash/values')
  13
  14 const constants = require('../initializers/constants')
  15 const logger = require('../helpers/logger')
  16 const friends = require('../lib/friends')
  17 const modelUtils = require('./utils')
  18 const customVideosValidators = require('../helpers/custom-validators').videos
  19
  20 // ---------------------------------------------------------------------------
  21
  22 module.exports = function (sequelize, DataTypes) {
  23   const Video = sequelize.define('Video',
  24     {
  25       id: {
  26         type: DataTypes.UUID,
  27         defaultValue: DataTypes.UUIDV4,
  28         primaryKey: true,
  29         validate: {
  30           isUUID: 4
  31         }
  32       },
  33       name: {
  34         type: DataTypes.STRING,
  35         allowNull: false,
  36         validate: {
  37           nameValid: function (value) {
  38             const res = customVideosValidators.isVideoNameValid(value)
  39             if (res === false) throw new Error('Video name is not valid.')
  40           }
  41         }
  42       },
  43       extname: {
  44         type: DataTypes.ENUM(values(constants.CONSTRAINTS_FIELDS.VIDEOS.EXTNAME)),
  45         allowNull: false
  46       },
  47       remoteId: {
  48         type: DataTypes.UUID,
  49         allowNull: true,
  50         validate: {
  51           isUUID: 4
  52         }
  53       },
  54       description: {
  55         type: DataTypes.STRING,
  56         allowNull: false,
  57         validate: {
  58           descriptionValid: function (value) {
  59             const res = customVideosValidators.isVideoDescriptionValid(value)
  60             if (res === false) throw new Error('Video description is not valid.')
  61           }
  62         }
  63       },
  64       infoHash: {
  65         type: DataTypes.STRING,
  66         allowNull: false,
  67         validate: {
  68           infoHashValid: function (value) {
  69             const res = customVideosValidators.isVideoInfoHashValid(value)
  70             if (res === false) throw new Error('Video info hash is not valid.')
  71           }
  72         }
  73       },
  74       duration: {
  75         type: DataTypes.INTEGER,
  76         allowNull: false,
  77         validate: {
  78           durationValid: function (value) {
  79             const res = customVideosValidators.isVideoDurationValid(value)
  80             if (res === false) throw new Error('Video duration is not valid.')
  81           }
  82         }
  83       },
  84       views: {
  85         type: DataTypes.INTEGER,
  86         allowNull: false,
  87         defaultValue: 0,
  88         validate: {
  89           min: 0,
  90           isInt: true
  91         }
  92       }
  93     },
  94     {
  95       indexes: [
  96         {
  97           fields: [ 'authorId' ]
  98         },
  99         {
 100           fields: [ 'remoteId' ]
 101         },
 102         {
 103           fields: [ 'name' ]
 104         },
 105         {
 106           fields: [ 'createdAt' ]
 107         },
 108         {
 109           fields: [ 'duration' ]
 110         },
 111         {
 112           fields: [ 'infoHash' ]
 113         },
 114         {
 115           fields: [ 'views' ]
 116         }
 117       ],
 118       classMethods: {
 119         associate,
 120
 121         generateThumbnailFromData,
 122         getDurationFromFile,
 123         list,
 124         listForApi,
 125         listOwnedAndPopulateAuthorAndTags,
 126         listOwnedByAuthor,
 127         load,
 128         loadByHostAndRemoteId,
 129         loadAndPopulateAuthor,
 130         loadAndPopulateAuthorAndPodAndTags,
 131         searchAndPopulateAuthorAndPodAndTags
 132       },
 133       instanceMethods: {
 134         generateMagnetUri,
 135         getVideoFilename,
 136         getThumbnailName,
 137         getPreviewName,
 138         getTorrentName,
 139         isOwned,
 140         toFormatedJSON,
 141         toAddRemoteJSON,
 142         toUpdateRemoteJSON
 143       },
 144       hooks: {
 145         beforeValidate,
 146         beforeCreate,
 147         afterDestroy
 148       }
 149     }
 150   )
 151
 152   return Video
 153 }
 154
 155 function beforeValidate (video, options, next) {
 156   // Put a fake infoHash if it does not exists yet
 157   if (video.isOwned() && !video.infoHash) {
 158     // 40 hexa length
 159     video.infoHash = '0123456789abcdef0123456789abcdef01234567'
 160   }
 161
 162   return next(null)
 163 }
 164
 165 function beforeCreate (video, options, next) {
 166   const tasks = []
 167
 168   if (video.isOwned()) {
 169     const videoPath = pathUtils.join(constants.CONFIG.STORAGE.VIDEOS_DIR, video.getVideoFilename())
 170
 171     tasks.push(
 172       function createVideoTorrent (callback) {
 173         const options = {
 174           announceList: [
 175             [ constants.CONFIG.WEBSERVER.WS + '://' + constants.CONFIG.WEBSERVER.HOSTNAME + ':' + constants.CONFIG.WEBSERVER.PORT + '/tracker/socket' ]
 176           ],
 177           urlList: [
 178             constants.CONFIG.WEBSERVER.URL + constants.STATIC_PATHS.WEBSEED + video.getVideoFilename()
 179           ]
 180         }
 181
 182         createTorrent(videoPath, options, function (err, torrent) {
 183           if (err) return callback(err)
 184
 185           const filePath = pathUtils.join(constants.CONFIG.STORAGE.TORRENTS_DIR, video.getTorrentName())
 186           fs.writeFile(filePath, torrent, function (err) {
 187             if (err) return callback(err)
 188
 189             const parsedTorrent = parseTorrent(torrent)
 190             video.set('infoHash', parsedTorrent.infoHash)
 191             video.validate().asCallback(callback)
 192           })
 193         })
 194       },
 195
 196       function createVideoThumbnail (callback) {
 197         createThumbnail(video, videoPath, callback)
 198       },
 199
 200       function createVIdeoPreview (callback) {
 201         createPreview(video, videoPath, callback)
 202       }
 203     )
 204
 205     return parallel(tasks, next)
 206   }
 207
 208   return next()
 209 }
 210
 211 function afterDestroy (video, options, next) {
 212   const tasks = []
 213
 214   tasks.push(
 215     function (callback) {
 216       removeThumbnail(video, callback)
 217     }
 218   )
 219
 220   if (video.isOwned()) {
 221     tasks.push(
 222       function removeVideoFile (callback) {
 223         removeFile(video, callback)
 224       },
 225
 226       function removeVideoTorrent (callback) {
 227         removeTorrent(video, callback)
 228       },
 229
 230       function removeVideoPreview (callback) {
 231         removePreview(video, callback)
 232       },
 233
 234       function removeVideoToFriends (callback) {
 235         const params = {
 236           remoteId: video.id
 237         }
 238
 239         friends.removeVideoToFriends(params)
 240
 241         return callback()
 242       }
 243     )
 244   }
 245
 246   parallel(tasks, next)
 247 }
 248
 249 // ------------------------------ METHODS ------------------------------
 250
 251 function associate (models) {
 252   this.belongsTo(models.Author, {
 253     foreignKey: {
 254       name: 'authorId',
 255       allowNull: false
 256     },
 257     onDelete: 'cascade'
 258   })
 259
 260   this.belongsToMany(models.Tag, {
 261     foreignKey: 'videoId',
 262     through: models.VideoTag,
 263     onDelete: 'cascade'
 264   })
 265
 266   this.hasMany(models.VideoAbuse, {
 267     foreignKey: {
 268       name: 'videoId',
 269       allowNull: false
 270     },
 271     onDelete: 'cascade'
 272   })
 273 }
 274
 275 function generateMagnetUri () {
 276   let baseUrlHttp, baseUrlWs
 277
 278   if (this.isOwned()) {
 279     baseUrlHttp = constants.CONFIG.WEBSERVER.URL
 280     baseUrlWs = constants.CONFIG.WEBSERVER.WS + '://' + constants.CONFIG.WEBSERVER.HOSTNAME + ':' + constants.CONFIG.WEBSERVER.PORT
 281   } else {
 282     baseUrlHttp = constants.REMOTE_SCHEME.HTTP + '://' + this.Author.Pod.host
 283     baseUrlWs = constants.REMOTE_SCHEME.WS + '://' + this.Author.Pod.host
 284   }
 285
 286   const xs = baseUrlHttp + constants.STATIC_PATHS.TORRENTS + this.getTorrentName()
 287   const announce = baseUrlWs + '/tracker/socket'
 288   const urlList = [ baseUrlHttp + constants.STATIC_PATHS.WEBSEED + this.getVideoFilename() ]
 289
 290   const magnetHash = {
 291     xs,
 292     announce,
 293     urlList,
 294     infoHash: this.infoHash,
 295     name: this.name
 296   }
 297
 298   return magnetUtil.encode(magnetHash)
 299 }
 300
 301 function getVideoFilename () {
 302   if (this.isOwned()) return this.id + this.extname
 303
 304   return this.remoteId + this.extname
 305 }
 306
 307 function getThumbnailName () {
 308   // We always have a copy of the thumbnail
 309   return this.id + '.jpg'
 310 }
 311
 312 function getPreviewName () {
 313   const extension = '.jpg'
 314
 315   if (this.isOwned()) return this.id + extension
 316
 317   return this.remoteId + extension
 318 }
 319
 320 function getTorrentName () {
 321   const extension = '.torrent'
 322
 323   if (this.isOwned()) return this.id + extension
 324
 325   return this.remoteId + extension
 326 }
 327
 328 function isOwned () {
 329   return this.remoteId === null
 330 }
 331
 332 function toFormatedJSON () {
 333   let podHost
 334
 335   if (this.Author.Pod) {
 336     podHost = this.Author.Pod.host
 337   } else {
 338     // It means it's our video
 339     podHost = constants.CONFIG.WEBSERVER.HOST
 340   }
 341
 342   const json = {
 343     id: this.id,
 344     name: this.name,
 345     description: this.description,
 346     podHost,
 347     isLocal: this.isOwned(),
 348     magnetUri: this.generateMagnetUri(),
 349     author: this.Author.name,
 350     duration: this.duration,
 351     views: this.views,
 352     tags: map(this.Tags, 'name'),
 353     thumbnailPath: pathUtils.join(constants.STATIC_PATHS.THUMBNAILS, this.getThumbnailName()),
 354     createdAt: this.createdAt,
 355     updatedAt: this.updatedAt
 356   }
 357
 358   return json
 359 }
 360
 361 function toAddRemoteJSON (callback) {
 362   const self = this
 363
 364   // Get thumbnail data to send to the other pod
 365   const thumbnailPath = pathUtils.join(constants.CONFIG.STORAGE.THUMBNAILS_DIR, this.getThumbnailName())
 366   fs.readFile(thumbnailPath, function (err, thumbnailData) {
 367     if (err) {
 368       logger.error('Cannot read the thumbnail of the video')
 369       return callback(err)
 370     }
 371
 372     const remoteVideo = {
 373       name: self.name,
 374       description: self.description,
 375       infoHash: self.infoHash,
 376       remoteId: self.id,
 377       author: self.Author.name,
 378       duration: self.duration,
 379       thumbnailData: thumbnailData.toString('binary'),
 380       tags: map(self.Tags, 'name'),
 381       createdAt: self.createdAt,
 382       updatedAt: self.updatedAt,
 383       extname: self.extname
 384     }
 385
 386     return callback(null, remoteVideo)
 387   })
 388 }
 389
 390 function toUpdateRemoteJSON (callback) {
 391   const json = {
 392     name: this.name,
 393     description: this.description,
 394     infoHash: this.infoHash,
 395     remoteId: this.id,
 396     author: this.Author.name,
 397     duration: this.duration,
 398     tags: map(this.Tags, 'name'),
 399     createdAt: this.createdAt,
 400     updatedAt: this.updatedAt,
 401     extname: this.extname
 402   }
 403
 404   return json
 405 }
 406
 407 // ------------------------------ STATICS ------------------------------
 408
 409 function generateThumbnailFromData (video, thumbnailData, callback) {
 410   // Creating the thumbnail for a remote video
 411
 412   const thumbnailName = video.getThumbnailName()
 413   const thumbnailPath = pathUtils.join(constants.CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
 414   fs.writeFile(thumbnailPath, Buffer.from(thumbnailData, 'binary'), function (err) {
 415     if (err) return callback(err)
 416
 417     return callback(null, thumbnailName)
 418   })
 419 }
 420
 421 function getDurationFromFile (videoPath, callback) {
 422   ffmpeg.ffprobe(videoPath, function (err, metadata) {
 423     if (err) return callback(err)
 424
 425     return callback(null, Math.floor(metadata.format.duration))
 426   })
 427 }
 428
 429 function list (callback) {
 430   return this.findAll().asCallback(callback)
 431 }
 432
 433 function listForApi (start, count, sort, callback) {
 434   const query = {
 435     offset: start,
 436     limit: count,
 437     distinct: true, // For the count, a video can have many tags
 438     order: [ modelUtils.getSort(sort), [ this.sequelize.models.Tag, 'name', 'ASC' ] ],
 439     include: [
 440       {
 441         model: this.sequelize.models.Author,
 442         include: [ { model: this.sequelize.models.Pod, required: false } ]
 443       },
 444
 445       this.sequelize.models.Tag
 446     ]
 447   }
 448
 449   return this.findAndCountAll(query).asCallback(function (err, result) {
 450     if (err) return callback(err)
 451
 452     return callback(null, result.rows, result.count)
 453   })
 454 }
 455
 456 function loadByHostAndRemoteId (fromHost, remoteId, callback) {
 457   const query = {
 458     where: {
 459       remoteId: remoteId
 460     },
 461     include: [
 462       {
 463         model: this.sequelize.models.Author,
 464         include: [
 465           {
 466             model: this.sequelize.models.Pod,
 467             required: true,
 468             where: {
 469               host: fromHost
 470             }
 471           }
 472         ]
 473       }
 474     ]
 475   }
 476
 477   return this.findOne(query).asCallback(callback)
 478 }
 479
 480 function listOwnedAndPopulateAuthorAndTags (callback) {
 481   // If remoteId is null this is *our* video
 482   const query = {
 483     where: {
 484       remoteId: null
 485     },
 486     include: [ this.sequelize.models.Author, this.sequelize.models.Tag ]
 487   }
 488
 489   return this.findAll(query).asCallback(callback)
 490 }
 491
 492 function listOwnedByAuthor (author, callback) {
 493   const query = {
 494     where: {
 495       remoteId: null
 496     },
 497     include: [
 498       {
 499         model: this.sequelize.models.Author,
 500         where: {
 501           name: author
 502         }
 503       }
 504     ]
 505   }
 506
 507   return this.findAll(query).asCallback(callback)
 508 }
 509
 510 function load (id, callback) {
 511   return this.findById(id).asCallback(callback)
 512 }
 513
 514 function loadAndPopulateAuthor (id, callback) {
 515   const options = {
 516     include: [ this.sequelize.models.Author ]
 517   }
 518
 519   return this.findById(id, options).asCallback(callback)
 520 }
 521
 522 function loadAndPopulateAuthorAndPodAndTags (id, callback) {
 523   const options = {
 524     include: [
 525       {
 526         model: this.sequelize.models.Author,
 527         include: [ { model: this.sequelize.models.Pod, required: false } ]
 528       },
 529       this.sequelize.models.Tag
 530     ]
 531   }
 532
 533   return this.findById(id, options).asCallback(callback)
 534 }
 535
 536 function searchAndPopulateAuthorAndPodAndTags (value, field, start, count, sort, callback) {
 537   const podInclude = {
 538     model: this.sequelize.models.Pod,
 539     required: false
 540   }
 541
 542   const authorInclude = {
 543     model: this.sequelize.models.Author,
 544     include: [
 545       podInclude
 546     ]
 547   }
 548
 549   const tagInclude = {
 550     model: this.sequelize.models.Tag
 551   }
 552
 553   const query = {
 554     where: {},
 555     offset: start,
 556     limit: count,
 557     distinct: true, // For the count, a video can have many tags
 558     order: [ modelUtils.getSort(sort), [ this.sequelize.models.Tag, 'name', 'ASC' ] ]
 559   }
 560
 561   // Make an exact search with the magnet
 562   if (field === 'magnetUri') {
 563     const infoHash = magnetUtil.decode(value).infoHash
 564     query.where.infoHash = infoHash
 565   } else if (field === 'tags') {
 566     const escapedValue = this.sequelize.escape('%' + value + '%')
 567     query.where = {
 568       id: {
 569         $in: this.sequelize.literal(
 570           '(SELECT "VideoTags"."videoId" FROM "Tags" INNER JOIN "VideoTags" ON "Tags"."id" = "VideoTags"."tagId" WHERE name LIKE ' + escapedValue + ')'
 571         )
 572       }
 573     }
 574   } else if (field === 'host') {
 575     // FIXME: Include our pod? (not stored in the database)
 576     podInclude.where = {
 577       host: {
 578         $like: '%' + value + '%'
 579       }
 580     }
 581     podInclude.required = true
 582   } else if (field === 'author') {
 583     authorInclude.where = {
 584       name: {
 585         $like: '%' + value + '%'
 586       }
 587     }
 588
 589     // authorInclude.or = true
 590   } else {
 591     query.where[field] = {
 592       $like: '%' + value + '%'
 593     }
 594   }
 595
 596   query.include = [
 597     authorInclude, tagInclude
 598   ]
 599
 600   if (tagInclude.where) {
 601     // query.include.push([ this.sequelize.models.Tag ])
 602   }
 603
 604   return this.findAndCountAll(query).asCallback(function (err, result) {
 605     if (err) return callback(err)
 606
 607     return callback(null, result.rows, result.count)
 608   })
 609 }
 610
 611 // ---------------------------------------------------------------------------
 612
 613 function removeThumbnail (video, callback) {
 614   const thumbnailPath = pathUtils.join(constants.CONFIG.STORAGE.THUMBNAILS_DIR, video.getThumbnailName())
 615   fs.unlink(thumbnailPath, callback)
 616 }
 617
 618 function removeFile (video, callback) {
 619   const filePath = pathUtils.join(constants.CONFIG.STORAGE.VIDEOS_DIR, video.getVideoFilename())
 620   fs.unlink(filePath, callback)
 621 }
 622
 623 function removeTorrent (video, callback) {
 624   const torrenPath = pathUtils.join(constants.CONFIG.STORAGE.TORRENTS_DIR, video.getTorrentName())
 625   fs.unlink(torrenPath, callback)
 626 }
 627
 628 function removePreview (video, callback) {
 629   // Same name than video thumnail
 630   fs.unlink(constants.CONFIG.STORAGE.PREVIEWS_DIR + video.getPreviewName(), callback)
 631 }
 632
 633 function createPreview (video, videoPath, callback) {
 634   generateImage(video, videoPath, constants.CONFIG.STORAGE.PREVIEWS_DIR, video.getPreviewName(), callback)
 635 }
 636
 637 function createThumbnail (video, videoPath, callback) {
 638   generateImage(video, videoPath, constants.CONFIG.STORAGE.THUMBNAILS_DIR, video.getThumbnailName(), constants.THUMBNAILS_SIZE, callback)
 639 }
 640
 641 function generateImage (video, videoPath, folder, imageName, size, callback) {
 642   const options = {
 643     filename: imageName,
 644     count: 1,
 645     folder
 646   }
 647
 648   if (!callback) {
 649     callback = size
 650   } else {
 651     options.size = size
 652   }
 653
 654   ffmpeg(videoPath)
 655     .on('error', callback)
 656     .on('end', function () {
 657       callback(null, imageName)
 658     })
 659     .thumbnail(options)
 660 }