1 files changed, 921 insertions, 0 deletions

diff --git a/server/models/video/video.ts b/server/models/video/video.ts
new file mode 100644
index 000000000..866b380cc
--- /dev/null
+++ b/server/models/video/video.ts
@@ -0,0 +1,921 @@
+import * as safeBuffer from 'safe-buffer'
+const Buffer = safeBuffer.Buffer
+import * as createTorrent from 'create-torrent'
+import * as ffmpeg from 'fluent-ffmpeg'
+import * as fs from 'fs'
+import * as magnetUtil from 'magnet-uri'
+import { map, values } from 'lodash'
+import { parallel, series } from 'async'
+import * as parseTorrent from 'parse-torrent'
+import { join } from 'path'
+import * as Sequelize from 'sequelize'
+
+import { database as db } from '../../initializers/database'
+import { VideoTagInstance } from './video-tag-interface'
+import {
+  logger,
+  isVideoNameValid,
+  isVideoCategoryValid,
+  isVideoLicenceValid,
+  isVideoLanguageValid,
+  isVideoNSFWValid,
+  isVideoDescriptionValid,
+  isVideoInfoHashValid,
+  isVideoDurationValid
+} from '../../helpers'
+import {
+  CONSTRAINTS_FIELDS,
+  CONFIG,
+  REMOTE_SCHEME,
+  STATIC_PATHS,
+  VIDEO_CATEGORIES,
+  VIDEO_LICENCES,
+  VIDEO_LANGUAGES,
+  THUMBNAILS_SIZE
+} from '../../initializers'
+import { JobScheduler, removeVideoToFriends } from '../../lib'
+
+import { addMethodsToModel, getSort } from '../utils'
+import {
+  VideoClass,
+  VideoInstance,
+  VideoAttributes,
+
+  VideoMethods
+} from './video-interface'
+
+let Video: Sequelize.Model<VideoInstance, VideoAttributes>
+let generateMagnetUri: VideoMethods.GenerateMagnetUri
+let getVideoFilename: VideoMethods.GetVideoFilename
+let getThumbnailName: VideoMethods.GetThumbnailName
+let getPreviewName: VideoMethods.GetPreviewName
+let getTorrentName: VideoMethods.GetTorrentName
+let isOwned: VideoMethods.IsOwned
+let toFormatedJSON: VideoMethods.ToFormatedJSON
+let toAddRemoteJSON: VideoMethods.ToAddRemoteJSON
+let toUpdateRemoteJSON: VideoMethods.ToUpdateRemoteJSON
+let transcodeVideofile: VideoMethods.TranscodeVideofile
+
+let generateThumbnailFromData: VideoMethods.GenerateThumbnailFromData
+let getDurationFromFile: VideoMethods.GetDurationFromFile
+let list: VideoMethods.List
+let listForApi: VideoMethods.ListForApi
+let loadByHostAndRemoteId: VideoMethods.LoadByHostAndRemoteId
+let listOwnedAndPopulateAuthorAndTags: VideoMethods.ListOwnedAndPopulateAuthorAndTags
+let listOwnedByAuthor: VideoMethods.ListOwnedByAuthor
+let load: VideoMethods.Load
+let loadAndPopulateAuthor: VideoMethods.LoadAndPopulateAuthor
+let loadAndPopulateAuthorAndPodAndTags: VideoMethods.LoadAndPopulateAuthorAndPodAndTags
+let searchAndPopulateAuthorAndPodAndTags: VideoMethods.SearchAndPopulateAuthorAndPodAndTags
+
+export default function (sequelize: Sequelize.Sequelize, DataTypes: Sequelize.DataTypes) {
+  Video = sequelize.define<VideoInstance, VideoAttributes>('Video',
+    {
+      id: {
+        type: DataTypes.UUID,
+        defaultValue: DataTypes.UUIDV4,
+        primaryKey: true,
+        validate: {
+          isUUID: 4
+        }
+      },
+      name: {
+        type: DataTypes.STRING,
+        allowNull: false,
+        validate: {
+          nameValid: function (value) {
+            const res = isVideoNameValid(value)
+            if (res === false) throw new Error('Video name is not valid.')
+          }
+        }
+      },
+      extname: {
+        type: DataTypes.ENUM(values(CONSTRAINTS_FIELDS.VIDEOS.EXTNAME)),
+        allowNull: false
+      },
+      remoteId: {
+        type: DataTypes.UUID,
+        allowNull: true,
+        validate: {
+          isUUID: 4
+        }
+      },
+      category: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        validate: {
+          categoryValid: function (value) {
+            const res = isVideoCategoryValid(value)
+            if (res === false) throw new Error('Video category is not valid.')
+          }
+        }
+      },
+      licence: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        defaultValue: null,
+        validate: {
+          licenceValid: function (value) {
+            const res = isVideoLicenceValid(value)
+            if (res === false) throw new Error('Video licence is not valid.')
+          }
+        }
+      },
+      language: {
+        type: DataTypes.INTEGER,
+        allowNull: true,
+        validate: {
+          languageValid: function (value) {
+            const res = isVideoLanguageValid(value)
+            if (res === false) throw new Error('Video language is not valid.')
+          }
+        }
+      },
+      nsfw: {
+        type: DataTypes.BOOLEAN,
+        allowNull: false,
+        validate: {
+          nsfwValid: function (value) {
+            const res = isVideoNSFWValid(value)
+            if (res === false) throw new Error('Video nsfw attribute is not valid.')
+          }
+        }
+      },
+      description: {
+        type: DataTypes.STRING,
+        allowNull: false,
+        validate: {
+          descriptionValid: function (value) {
+            const res = isVideoDescriptionValid(value)
+            if (res === false) throw new Error('Video description is not valid.')
+          }
+        }
+      },
+      infoHash: {
+        type: DataTypes.STRING,
+        allowNull: false,
+        validate: {
+          infoHashValid: function (value) {
+            const res = isVideoInfoHashValid(value)
+            if (res === false) throw new Error('Video info hash is not valid.')
+          }
+        }
+      },
+      duration: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        validate: {
+          durationValid: function (value) {
+            const res = isVideoDurationValid(value)
+            if (res === false) throw new Error('Video duration is not valid.')
+          }
+        }
+      },
+      views: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        defaultValue: 0,
+        validate: {
+          min: 0,
+          isInt: true
+        }
+      },
+      likes: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        defaultValue: 0,
+        validate: {
+          min: 0,
+          isInt: true
+        }
+      },
+      dislikes: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        defaultValue: 0,
+        validate: {
+          min: 0,
+          isInt: true
+        }
+      }
+    },
+    {
+      indexes: [
+        {
+          fields: [ 'authorId' ]
+        },
+        {
+          fields: [ 'remoteId' ]
+        },
+        {
+          fields: [ 'name' ]
+        },
+        {
+          fields: [ 'createdAt' ]
+        },
+        {
+          fields: [ 'duration' ]
+        },
+        {
+          fields: [ 'infoHash' ]
+        },
+        {
+          fields: [ 'views' ]
+        },
+        {
+          fields: [ 'likes' ]
+        }
+      ],
+      hooks: {
+        beforeValidate,
+        beforeCreate,
+        afterDestroy
+      }
+    }
+  )
+
+  const classMethods = [
+    associate,
+
+    generateThumbnailFromData,
+    getDurationFromFile,
+    list,
+    listForApi,
+    listOwnedAndPopulateAuthorAndTags,
+    listOwnedByAuthor,
+    load,
+    loadByHostAndRemoteId,
+    loadAndPopulateAuthor,
+    loadAndPopulateAuthorAndPodAndTags,
+    searchAndPopulateAuthorAndPodAndTags
+  ]
+  const instanceMethods = [
+    generateMagnetUri,
+    getVideoFilename,
+    getThumbnailName,
+    getPreviewName,
+    getTorrentName,
+    isOwned,
+    toFormatedJSON,
+    toAddRemoteJSON,
+    toUpdateRemoteJSON,
+    transcodeVideofile,
+    removeFromBlacklist
+  ]
+  addMethodsToModel(Video, classMethods, instanceMethods)
+
+  return Video
+}
+
+function beforeValidate (video: VideoInstance) {
+  // Put a fake infoHash if it does not exists yet
+  if (video.isOwned() && !video.infoHash) {
+    // 40 hexa length
+    video.infoHash = '0123456789abcdef0123456789abcdef01234567'
+  }
+}
+
+function beforeCreate (video: VideoInstance, options: { transaction: Sequelize.Transaction }) {
+  return new Promise(function (resolve, reject) {
+    const tasks = []
+
+    if (video.isOwned()) {
+      const videoPath = join(CONFIG.STORAGE.VIDEOS_DIR, video.getVideoFilename())
+
+      tasks.push(
+        function createVideoTorrent (callback) {
+          createTorrentFromVideo(video, videoPath, callback)
+        },
+
+        function createVideoThumbnail (callback) {
+          createThumbnail(video, videoPath, callback)
+        },
+
+        function createVideoPreview (callback) {
+          createPreview(video, videoPath, callback)
+        }
+      )
+
+      if (CONFIG.TRANSCODING.ENABLED === true) {
+        tasks.push(
+          function createVideoTranscoderJob (callback) {
+            const dataInput = {
+              id: video.id
+            }
+
+            JobScheduler.Instance.createJob(options.transaction, 'videoTranscoder', dataInput, callback)
+          }
+        )
+      }
+
+      return parallel(tasks, function (err) {
+        if (err) return reject(err)
+
+        return resolve()
+      })
+    }
+
+    return resolve()
+  })
+}
+
+function afterDestroy (video: VideoInstance) {
+  return new Promise(function (resolve, reject) {
+    const tasks = []
+
+    tasks.push(
+      function (callback) {
+        removeThumbnail(video, callback)
+      }
+    )
+
+    if (video.isOwned()) {
+      tasks.push(
+        function removeVideoFile (callback) {
+          removeFile(video, callback)
+        },
+
+        function removeVideoTorrent (callback) {
+          removeTorrent(video, callback)
+        },
+
+        function removeVideoPreview (callback) {
+          removePreview(video, callback)
+        },
+
+        function notifyFriends (callback) {
+          const params = {
+            remoteId: video.id
+          }
+
+          removeVideoToFriends(params)
+
+          return callback()
+        }
+      )
+    }
+
+    parallel(tasks, function (err) {
+      if (err) return reject(err)
+
+      return resolve()
+    })
+  })
+}
+
+// ------------------------------ METHODS ------------------------------
+
+function associate (models) {
+  Video.belongsTo(models.Author, {
+    foreignKey: {
+      name: 'authorId',
+      allowNull: false
+    },
+    onDelete: 'cascade'
+  })
+
+  Video.belongsToMany(models.Tag, {
+    foreignKey: 'videoId',
+    through: models.VideoTag,
+    onDelete: 'cascade'
+  })
+
+  Video.hasMany(models.VideoAbuse, {
+    foreignKey: {
+      name: 'videoId',
+      allowNull: false
+    },
+    onDelete: 'cascade'
+  })
+}
+
+generateMagnetUri = function () {
+  let baseUrlHttp
+  let baseUrlWs
+
+  if (this.isOwned()) {
+    baseUrlHttp = CONFIG.WEBSERVER.URL
+    baseUrlWs = CONFIG.WEBSERVER.WS + '://' + CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT
+  } else {
+    baseUrlHttp = REMOTE_SCHEME.HTTP + '://' + this.Author.Pod.host
+    baseUrlWs = REMOTE_SCHEME.WS + '://' + this.Author.Pod.host
+  }
+
+  const xs = baseUrlHttp + STATIC_PATHS.TORRENTS + this.getTorrentName()
+  const announce = [ baseUrlWs + '/tracker/socket' ]
+  const urlList = [ baseUrlHttp + STATIC_PATHS.WEBSEED + this.getVideoFilename() ]
+
+  const magnetHash = {
+    xs,
+    announce,
+    urlList,
+    infoHash: this.infoHash,
+    name: this.name
+  }
+
+  return magnetUtil.encode(magnetHash)
+}
+
+getVideoFilename = function () {
+  if (this.isOwned()) return this.id + this.extname
+
+  return this.remoteId + this.extname
+}
+
+getThumbnailName = function () {
+  // We always have a copy of the thumbnail
+  return this.id + '.jpg'
+}
+
+getPreviewName = function () {
+  const extension = '.jpg'
+
+  if (this.isOwned()) return this.id + extension
+
+  return this.remoteId + extension
+}
+
+getTorrentName = function () {
+  const extension = '.torrent'
+
+  if (this.isOwned()) return this.id + extension
+
+  return this.remoteId + extension
+}
+
+isOwned = function () {
+  return this.remoteId === null
+}
+
+toFormatedJSON = function (this: VideoInstance) {
+  let podHost
+
+  if (this.Author.Pod) {
+    podHost = this.Author.Pod.host
+  } else {
+    // It means it's our video
+    podHost = CONFIG.WEBSERVER.HOST
+  }
+
+  // Maybe our pod is not up to date and there are new categories since our version
+  let categoryLabel = VIDEO_CATEGORIES[this.category]
+  if (!categoryLabel) categoryLabel = 'Misc'
+
+  // Maybe our pod is not up to date and there are new licences since our version
+  let licenceLabel = VIDEO_LICENCES[this.licence]
+  if (!licenceLabel) licenceLabel = 'Unknown'
+
+  // Language is an optional attribute
+  let languageLabel = VIDEO_LANGUAGES[this.language]
+  if (!languageLabel) languageLabel = 'Unknown'
+
+  const json = {
+    id: this.id,
+    name: this.name,
+    category: this.category,
+    categoryLabel,
+    licence: this.licence,
+    licenceLabel,
+    language: this.language,
+    languageLabel,
+    nsfw: this.nsfw,
+    description: this.description,
+    podHost,
+    isLocal: this.isOwned(),
+    magnetUri: this.generateMagnetUri(),
+    author: this.Author.name,
+    duration: this.duration,
+    views: this.views,
+    likes: this.likes,
+    dislikes: this.dislikes,
+    tags: map<VideoTagInstance, string>(this.Tags, 'name'),
+    thumbnailPath: join(STATIC_PATHS.THUMBNAILS, this.getThumbnailName()),
+    createdAt: this.createdAt,
+    updatedAt: this.updatedAt
+  }
+
+  return json
+}
+
+toAddRemoteJSON = function (callback: VideoMethods.ToAddRemoteJSONCallback) {
+  // Get thumbnail data to send to the other pod
+  const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, this.getThumbnailName())
+  fs.readFile(thumbnailPath, (err, thumbnailData) => {
+    if (err) {
+      logger.error('Cannot read the thumbnail of the video')
+      return callback(err)
+    }
+
+    const remoteVideo = {
+      name: this.name,
+      category: this.category,
+      licence: this.licence,
+      language: this.language,
+      nsfw: this.nsfw,
+      description: this.description,
+      infoHash: this.infoHash,
+      remoteId: this.id,
+      author: this.Author.name,
+      duration: this.duration,
+      thumbnailData: thumbnailData.toString('binary'),
+      tags: map<VideoTagInstance, string>(this.Tags, 'name'),
+      createdAt: this.createdAt,
+      updatedAt: this.updatedAt,
+      extname: this.extname,
+      views: this.views,
+      likes: this.likes,
+      dislikes: this.dislikes
+    }
+
+    return callback(null, remoteVideo)
+  })
+}
+
+toUpdateRemoteJSON = function () {
+  const json = {
+    name: this.name,
+    category: this.category,
+    licence: this.licence,
+    language: this.language,
+    nsfw: this.nsfw,
+    description: this.description,
+    infoHash: this.infoHash,
+    remoteId: this.id,
+    author: this.Author.name,
+    duration: this.duration,
+    tags: map<VideoTagInstance, string>(this.Tags, 'name'),
+    createdAt: this.createdAt,
+    updatedAt: this.updatedAt,
+    extname: this.extname,
+    views: this.views,
+    likes: this.likes,
+    dislikes: this.dislikes
+  }
+
+  return json
+}
+
+transcodeVideofile = function (finalCallback: VideoMethods.TranscodeVideofileCallback) {
+  const video = this
+
+  const videosDirectory = CONFIG.STORAGE.VIDEOS_DIR
+  const newExtname = '.mp4'
+  const videoInputPath = join(videosDirectory, video.getVideoFilename())
+  const videoOutputPath = join(videosDirectory, video.id + '-transcoded' + newExtname)
+
+  ffmpeg(videoInputPath)
+    .output(videoOutputPath)
+    .videoCodec('libx264')
+    .outputOption('-threads ' + CONFIG.TRANSCODING.THREADS)
+    .outputOption('-movflags faststart')
+    .on('error', finalCallback)
+    .on('end', function () {
+      series([
+        function removeOldFile (callback) {
+          fs.unlink(videoInputPath, callback)
+        },
+
+        function moveNewFile (callback) {
+          // Important to do this before getVideoFilename() to take in account the new file extension
+          video.set('extname', newExtname)
+
+          const newVideoPath = join(videosDirectory, video.getVideoFilename())
+          fs.rename(videoOutputPath, newVideoPath, callback)
+        },
+
+        function torrent (callback) {
+          const newVideoPath = join(videosDirectory, video.getVideoFilename())
+          createTorrentFromVideo(video, newVideoPath, callback)
+        },
+
+        function videoExtension (callback) {
+          video.save().asCallback(callback)
+        }
+
+      ], function (err: Error) {
+        if (err) {
+          // Autodesctruction...
+          video.destroy().asCallback(function (err) {
+            if (err) logger.error('Cannot destruct video after transcoding failure.', { error: err })
+          })
+
+          return finalCallback(err)
+        }
+
+        return finalCallback(null)
+      })
+    })
+    .run()
+}
+
+// ------------------------------ STATICS ------------------------------
+
+generateThumbnailFromData = function (video: VideoInstance, thumbnailData: string, callback: VideoMethods.GenerateThumbnailFromDataCallback) {
+  // Creating the thumbnail for a remote video
+
+  const thumbnailName = video.getThumbnailName()
+  const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
+  fs.writeFile(thumbnailPath, Buffer.from(thumbnailData, 'binary'), function (err) {
+    if (err) return callback(err)
+
+    return callback(null, thumbnailName)
+  })
+}
+
+getDurationFromFile = function (videoPath: string, callback: VideoMethods.GetDurationFromFileCallback) {
+  ffmpeg.ffprobe(videoPath, function (err, metadata) {
+    if (err) return callback(err)
+
+    return callback(null, Math.floor(metadata.format.duration))
+  })
+}
+
+list = function (callback: VideoMethods.ListCallback) {
+  return Video.findAll().asCallback(callback)
+}
+
+listForApi = function (start: number, count: number, sort: string, callback: VideoMethods.ListForApiCallback) {
+  // Exclude Blakclisted videos from the list
+  const query = {
+    distinct: true,
+    offset: start,
+    limit: count,
+    order: [ getSort(sort), [ Video['sequelize'].models.Tag, 'name', 'ASC' ] ],
+    include: [
+      {
+        model: Video['sequelize'].models.Author,
+        include: [ { model: Video['sequelize'].models.Pod, required: false } ]
+      },
+
+      Video['sequelize'].models.Tag
+    ],
+    where: createBaseVideosWhere()
+  }
+
+  return Video.findAndCountAll(query).asCallback(function (err, result) {
+    if (err) return callback(err)
+
+    return callback(null, result.rows, result.count)
+  })
+}
+
+loadByHostAndRemoteId = function (fromHost: string, remoteId: string, callback: VideoMethods.LoadByHostAndRemoteIdCallback) {
+  const query = {
+    where: {
+      remoteId: remoteId
+    },
+    include: [
+      {
+        model: Video['sequelize'].models.Author,
+        include: [
+          {
+            model: Video['sequelize'].models.Pod,
+            required: true,
+            where: {
+              host: fromHost
+            }
+          }
+        ]
+      }
+    ]
+  }
+
+  return Video.findOne(query).asCallback(callback)
+}
+
+listOwnedAndPopulateAuthorAndTags = function (callback: VideoMethods.ListOwnedAndPopulateAuthorAndTagsCallback) {
+  // If remoteId is null this is *our* video
+  const query = {
+    where: {
+      remoteId: null
+    },
+    include: [ Video['sequelize'].models.Author, Video['sequelize'].models.Tag ]
+  }
+
+  return Video.findAll(query).asCallback(callback)
+}
+
+listOwnedByAuthor = function (author: string, callback: VideoMethods.ListOwnedByAuthorCallback) {
+  const query = {
+    where: {
+      remoteId: null
+    },
+    include: [
+      {
+        model: Video['sequelize'].models.Author,
+        where: {
+          name: author
+        }
+      }
+    ]
+  }
+
+  return Video.findAll(query).asCallback(callback)
+}
+
+load = function (id: string, callback: VideoMethods.LoadCallback) {
+  return Video.findById(id).asCallback(callback)
+}
+
+loadAndPopulateAuthor = function (id: string, callback: VideoMethods.LoadAndPopulateAuthorCallback) {
+  const options = {
+    include: [ Video['sequelize'].models.Author ]
+  }
+
+  return Video.findById(id, options).asCallback(callback)
+}
+
+loadAndPopulateAuthorAndPodAndTags = function (id: string, callback: VideoMethods.LoadAndPopulateAuthorAndPodAndTagsCallback) {
+  const options = {
+    include: [
+      {
+        model: Video['sequelize'].models.Author,
+        include: [ { model: Video['sequelize'].models.Pod, required: false } ]
+      },
+      Video['sequelize'].models.Tag
+    ]
+  }
+
+  return Video.findById(id, options).asCallback(callback)
+}
+
+searchAndPopulateAuthorAndPodAndTags = function (
+  value: string,
+  field: string,
+  start: number,
+  count: number,
+  sort: string,
+  callback: VideoMethods.SearchAndPopulateAuthorAndPodAndTagsCallback
+) {
+  const podInclude: any = {
+    model: Video['sequelize'].models.Pod,
+    required: false
+  }
+
+  const authorInclude: any = {
+    model: Video['sequelize'].models.Author,
+    include: [
+      podInclude
+    ]
+  }
+
+  const tagInclude: any = {
+    model: Video['sequelize'].models.Tag
+  }
+
+  const query: any = {
+    distinct: true,
+    where: createBaseVideosWhere(),
+    offset: start,
+    limit: count,
+    order: [ getSort(sort), [ Video['sequelize'].models.Tag, 'name', 'ASC' ] ]
+  }
+
+  // Make an exact search with the magnet
+  if (field === 'magnetUri') {
+    const infoHash = magnetUtil.decode(value).infoHash
+    query.where.infoHash = infoHash
+  } else if (field === 'tags') {
+    const escapedValue = Video['sequelize'].escape('%' + value + '%')
+    query.where.id.$in = Video['sequelize'].literal(
+      '(SELECT "VideoTags"."videoId" FROM "Tags" INNER JOIN "VideoTags" ON "Tags"."id" = "VideoTags"."tagId" WHERE name LIKE ' + escapedValue + ')'
+    )
+  } else if (field === 'host') {
+    // FIXME: Include our pod? (not stored in the database)
+    podInclude.where = {
+      host: {
+        $like: '%' + value + '%'
+      }
+    }
+    podInclude.required = true
+  } else if (field === 'author') {
+    authorInclude.where = {
+      name: {
+        $like: '%' + value + '%'
+      }
+    }
+
+    // authorInclude.or = true
+  } else {
+    query.where[field] = {
+      $like: '%' + value + '%'
+    }
+  }
+
+  query.include = [
+    authorInclude, tagInclude
+  ]
+
+  if (tagInclude.where) {
+    // query.include.push([ Video['sequelize'].models.Tag ])
+  }
+
+  return Video.findAndCountAll(query).asCallback(function (err, result) {
+    if (err) return callback(err)
+
+    return callback(null, result.rows, result.count)
+  })
+}
+
+// ---------------------------------------------------------------------------
+
+function createBaseVideosWhere () {
+  return {
+    id: {
+      $notIn: Video['sequelize'].literal(
+        '(SELECT "BlacklistedVideos"."videoId" FROM "BlacklistedVideos")'
+      )
+    }
+  }
+}
+
+function removeThumbnail (video: VideoInstance, callback: (err: Error) => void) {
+  const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, video.getThumbnailName())
+  fs.unlink(thumbnailPath, callback)
+}
+
+function removeFile (video: VideoInstance, callback: (err: Error) => void) {
+  const filePath = join(CONFIG.STORAGE.VIDEOS_DIR, video.getVideoFilename())
+  fs.unlink(filePath, callback)
+}
+
+function removeTorrent (video: VideoInstance, callback: (err: Error) => void) {
+  const torrenPath = join(CONFIG.STORAGE.TORRENTS_DIR, video.getTorrentName())
+  fs.unlink(torrenPath, callback)
+}
+
+function removePreview (video: VideoInstance, callback: (err: Error) => void) {
+  // Same name than video thumnail
+  fs.unlink(CONFIG.STORAGE.PREVIEWS_DIR + video.getPreviewName(), callback)
+}
+
+function createTorrentFromVideo (video: VideoInstance, videoPath: string, callback: (err: Error) => void) {
+  const options = {
+    announceList: [
+      [ CONFIG.WEBSERVER.WS + '://' + CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT + '/tracker/socket' ]
+    ],
+    urlList: [
+      CONFIG.WEBSERVER.URL + STATIC_PATHS.WEBSEED + video.getVideoFilename()
+    ]
+  }
+
+  createTorrent(videoPath, options, function (err, torrent) {
+    if (err) return callback(err)
+
+    const filePath = join(CONFIG.STORAGE.TORRENTS_DIR, video.getTorrentName())
+    fs.writeFile(filePath, torrent, function (err) {
+      if (err) return callback(err)
+
+      const parsedTorrent = parseTorrent(torrent)
+      video.set('infoHash', parsedTorrent.infoHash)
+      video.validate().asCallback(callback)
+    })
+  })
+}
+
+function createPreview (video: VideoInstance, videoPath: string, callback: (err: Error) => void) {
+  generateImage(video, videoPath, CONFIG.STORAGE.PREVIEWS_DIR, video.getPreviewName(), null, callback)
+}
+
+function createThumbnail (video: VideoInstance, videoPath: string, callback: (err: Error) => void) {
+  generateImage(video, videoPath, CONFIG.STORAGE.THUMBNAILS_DIR, video.getThumbnailName(), THUMBNAILS_SIZE, callback)
+}
+
+type GenerateImageCallback = (err: Error, imageName: string) => void
+function generateImage (video: VideoInstance, videoPath: string, folder: string, imageName: string, size: string, callback?: GenerateImageCallback) {
+  const options: any = {
+    filename: imageName,
+    count: 1,
+    folder
+  }
+
+  if (size) {
+    options.size = size
+  }
+
+  ffmpeg(videoPath)
+    .on('error', callback)
+    .on('end', function () {
+      callback(null, imageName)
+    })
+    .thumbnail(options)
+}
+
+function removeFromBlacklist (video: VideoInstance, callback: (err: Error) => void) {
+  // Find the blacklisted video
+  db.BlacklistedVideo.loadByVideoId(video.id, function (err, video) {
+    // If an error occured, stop here
+    if (err) {
+      logger.error('Error when fetching video from blacklist.', { error: err })
+      return callback(err)
+    }
+
+    // If we found the video, remove it from the blacklist
+    if (video) {
+      video.destroy().asCallback(callback)
+    } else {
+      // If haven't found it, simply ignore it and do nothing
+      return callback(null)
+    }
+  })
+}