PeerTube/server/models/video.js

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'use strict'
const Buffer = require('safe-buffer').Buffer
const createTorrent = require('create-torrent')
const ffmpeg = require('fluent-ffmpeg')
const fs = require('fs')
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const magnetUtil = require('magnet-uri')
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const map = require('lodash/map')
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const parallel = require('async/parallel')
const parseTorrent = require('parse-torrent')
const pathUtils = require('path')
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const values = require('lodash/values')
const constants = require('../initializers/constants')
const logger = require('../helpers/logger')
const friends = require('../lib/friends')
const modelUtils = require('./utils')
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const customVideosValidators = require('../helpers/custom-validators').videos
// ---------------------------------------------------------------------------
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module.exports = function (sequelize, DataTypes) {
const Video = sequelize.define('Video',
{
id: {
type: DataTypes.UUID,
defaultValue: DataTypes.UUIDV4,
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primaryKey: true,
validate: {
isUUID: 4
}
},
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name: {
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type: DataTypes.STRING,
allowNull: false,
validate: {
nameValid: function (value) {
const res = customVideosValidators.isVideoNameValid(value)
if (res === false) throw new Error('Video name is not valid.')
}
}
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},
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extname: {
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type: DataTypes.ENUM(values(constants.CONSTRAINTS_FIELDS.VIDEOS.EXTNAME)),
allowNull: false
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},
remoteId: {
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type: DataTypes.UUID,
allowNull: true,
validate: {
isUUID: 4
}
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},
description: {
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type: DataTypes.STRING,
allowNull: false,
validate: {
descriptionValid: function (value) {
const res = customVideosValidators.isVideoDescriptionValid(value)
if (res === false) throw new Error('Video description is not valid.')
}
}
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},
infoHash: {
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type: DataTypes.STRING,
allowNull: false,
validate: {
infoHashValid: function (value) {
const res = customVideosValidators.isVideoInfoHashValid(value)
if (res === false) throw new Error('Video info hash is not valid.')
}
}
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},
duration: {
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type: DataTypes.INTEGER,
allowNull: false,
validate: {
durationValid: function (value) {
const res = customVideosValidators.isVideoDurationValid(value)
if (res === false) throw new Error('Video duration is not valid.')
}
}
}
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},
{
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indexes: [
{
fields: [ 'authorId' ]
},
{
fields: [ 'remoteId' ]
},
{
fields: [ 'name' ]
},
{
fields: [ 'createdAt' ]
},
{
fields: [ 'duration' ]
},
{
fields: [ 'infoHash' ]
}
],
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classMethods: {
associate,
generateThumbnailFromData,
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getDurationFromFile,
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list,
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listForApi,
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listOwnedAndPopulateAuthorAndTags,
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listOwnedByAuthor,
load,
loadByHostAndRemoteId,
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loadAndPopulateAuthor,
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loadAndPopulateAuthorAndPodAndTags,
searchAndPopulateAuthorAndPodAndTags
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},
instanceMethods: {
generateMagnetUri,
getVideoFilename,
getThumbnailName,
getPreviewName,
getTorrentName,
isOwned,
toFormatedJSON,
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toAddRemoteJSON,
toUpdateRemoteJSON
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},
hooks: {
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beforeValidate,
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beforeCreate,
afterDestroy
}
}
)
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return Video
}
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function beforeValidate (video, options, next) {
// Put a fake infoHash if it does not exists yet
if (video.isOwned() && !video.infoHash) {
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// 40 hexa length
video.infoHash = '0123456789abcdef0123456789abcdef01234567'
}
return next(null)
}
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function beforeCreate (video, options, next) {
const tasks = []
if (video.isOwned()) {
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const videoPath = pathUtils.join(constants.CONFIG.STORAGE.VIDEOS_DIR, video.getVideoFilename())
tasks.push(
// TODO: refractoring
function (callback) {
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const options = {
announceList: [
[ constants.CONFIG.WEBSERVER.WS + '://' + constants.CONFIG.WEBSERVER.HOSTNAME + ':' + constants.CONFIG.WEBSERVER.PORT + '/tracker/socket' ]
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],
urlList: [
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constants.CONFIG.WEBSERVER.URL + constants.STATIC_PATHS.WEBSEED + video.getVideoFilename()
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]
}
createTorrent(videoPath, options, function (err, torrent) {
if (err) return callback(err)
fs.writeFile(constants.CONFIG.STORAGE.TORRENTS_DIR + video.getTorrentName(), torrent, function (err) {
if (err) return callback(err)
const parsedTorrent = parseTorrent(torrent)
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video.set('infoHash', parsedTorrent.infoHash)
video.validate().asCallback(callback)
})
})
},
function (callback) {
createThumbnail(video, videoPath, callback)
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},
function (callback) {
createPreview(video, videoPath, callback)
}
)
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return parallel(tasks, next)
}
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return next()
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}
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function afterDestroy (video, options, next) {
const tasks = []
tasks.push(
function (callback) {
removeThumbnail(video, callback)
}
)
if (video.isOwned()) {
tasks.push(
function (callback) {
removeFile(video, callback)
},
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function (callback) {
removeTorrent(video, callback)
},
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function (callback) {
removePreview(video, callback)
},
function (callback) {
const params = {
remoteId: video.id
}
friends.removeVideoToFriends(params)
return callback()
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}
)
}
parallel(tasks, next)
}
// ------------------------------ METHODS ------------------------------
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function associate (models) {
this.belongsTo(models.Author, {
foreignKey: {
name: 'authorId',
allowNull: false
},
onDelete: 'cascade'
})
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this.belongsToMany(models.Tag, {
foreignKey: 'videoId',
through: models.VideoTag,
onDelete: 'cascade'
})
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this.hasMany(models.VideoAbuse, {
foreignKey: {
name: 'videoId',
allowNull: false
},
onDelete: 'cascade'
})
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}
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function generateMagnetUri () {
let baseUrlHttp, baseUrlWs
if (this.isOwned()) {
baseUrlHttp = constants.CONFIG.WEBSERVER.URL
baseUrlWs = constants.CONFIG.WEBSERVER.WS + '://' + constants.CONFIG.WEBSERVER.HOSTNAME + ':' + constants.CONFIG.WEBSERVER.PORT
} else {
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baseUrlHttp = constants.REMOTE_SCHEME.HTTP + '://' + this.Author.Pod.host
baseUrlWs = constants.REMOTE_SCHEME.WS + '://' + this.Author.Pod.host
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}
const xs = baseUrlHttp + constants.STATIC_PATHS.TORRENTS + this.getTorrentName()
const announce = baseUrlWs + '/tracker/socket'
const urlList = [ baseUrlHttp + constants.STATIC_PATHS.WEBSEED + this.getVideoFilename() ]
const magnetHash = {
xs,
announce,
urlList,
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infoHash: this.infoHash,
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name: this.name
}
return magnetUtil.encode(magnetHash)
}
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function getVideoFilename () {
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if (this.isOwned()) return this.id + this.extname
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return this.remoteId + this.extname
}
function getThumbnailName () {
// We always have a copy of the thumbnail
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return this.id + '.jpg'
}
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function getPreviewName () {
const extension = '.jpg'
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if (this.isOwned()) return this.id + extension
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return this.remoteId + extension
}
function getTorrentName () {
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const extension = '.torrent'
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if (this.isOwned()) return this.id + extension
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return this.remoteId + extension
}
function isOwned () {
return this.remoteId === null
}
function toFormatedJSON () {
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let podHost
if (this.Author.Pod) {
podHost = this.Author.Pod.host
} else {
// It means it's our video
podHost = constants.CONFIG.WEBSERVER.HOST
}
const json = {
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id: this.id,
name: this.name,
description: this.description,
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podHost,
isLocal: this.isOwned(),
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magnetUri: this.generateMagnetUri(),
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author: this.Author.name,
duration: this.duration,
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tags: map(this.Tags, 'name'),
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thumbnailPath: pathUtils.join(constants.STATIC_PATHS.THUMBNAILS, this.getThumbnailName()),
createdAt: this.createdAt,
updatedAt: this.updatedAt
}
return json
}
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function toAddRemoteJSON (callback) {
const self = this
// Get thumbnail data to send to the other pod
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const thumbnailPath = pathUtils.join(constants.CONFIG.STORAGE.THUMBNAILS_DIR, this.getThumbnailName())
fs.readFile(thumbnailPath, 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,
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infoHash: self.infoHash,
remoteId: self.id,
author: self.Author.name,
duration: self.duration,
thumbnailData: thumbnailData.toString('binary'),
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tags: map(self.Tags, 'name'),
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createdAt: self.createdAt,
updatedAt: self.updatedAt,
extname: self.extname
}
return callback(null, remoteVideo)
})
}
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function toUpdateRemoteJSON (callback) {
const json = {
name: this.name,
description: this.description,
infoHash: this.infoHash,
remoteId: this.id,
author: this.Author.name,
duration: this.duration,
tags: map(this.Tags, 'name'),
createdAt: this.createdAt,
updatedAt: this.updatedAt,
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extname: this.extname
}
return json
}
// ------------------------------ STATICS ------------------------------
function generateThumbnailFromData (video, thumbnailData, callback) {
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// Creating the thumbnail for a remote video
const thumbnailName = video.getThumbnailName()
const thumbnailPath = constants.CONFIG.STORAGE.THUMBNAILS_DIR + thumbnailName
fs.writeFile(thumbnailPath, Buffer.from(thumbnailData, 'binary'), function (err) {
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if (err) return callback(err)
return callback(null, thumbnailName)
})
}
function getDurationFromFile (videoPath, callback) {
ffmpeg.ffprobe(videoPath, function (err, metadata) {
if (err) return callback(err)
return callback(null, Math.floor(metadata.format.duration))
})
}
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function list (callback) {
return this.find().asCallback()
}
function listForApi (start, count, sort, callback) {
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const query = {
offset: start,
limit: count,
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distinct: true, // For the count, a video can have many tags
order: [ modelUtils.getSort(sort), [ this.sequelize.models.Tag, 'name', 'ASC' ] ],
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include: [
{
model: this.sequelize.models.Author,
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include: [ { model: this.sequelize.models.Pod, required: false } ]
},
this.sequelize.models.Tag
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]
}
return this.findAndCountAll(query).asCallback(function (err, result) {
if (err) return callback(err)
return callback(null, result.rows, result.count)
})
}
function loadByHostAndRemoteId (fromHost, remoteId, callback) {
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const query = {
where: {
remoteId: remoteId
},
include: [
{
model: this.sequelize.models.Author,
include: [
{
model: this.sequelize.models.Pod,
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required: true,
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where: {
host: fromHost
}
}
]
}
]
}
return this.findOne(query).asCallback(callback)
}
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function listOwnedAndPopulateAuthorAndTags (callback) {
// If remoteId is null this is *our* video
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const query = {
where: {
remoteId: null
},
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include: [ this.sequelize.models.Author, this.sequelize.models.Tag ]
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}
return this.findAll(query).asCallback(callback)
}
function listOwnedByAuthor (author, callback) {
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const query = {
where: {
remoteId: null
},
include: [
{
model: this.sequelize.models.Author,
where: {
name: author
}
}
]
}
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return this.findAll(query).asCallback(callback)
}
function load (id, callback) {
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return this.findById(id).asCallback(callback)
}
function loadAndPopulateAuthor (id, callback) {
const options = {
include: [ this.sequelize.models.Author ]
}
return this.findById(id, options).asCallback(callback)
}
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function loadAndPopulateAuthorAndPodAndTags (id, callback) {
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const options = {
include: [
{
model: this.sequelize.models.Author,
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include: [ { model: this.sequelize.models.Pod, required: false } ]
},
this.sequelize.models.Tag
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]
}
return this.findById(id, options).asCallback(callback)
}
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function searchAndPopulateAuthorAndPodAndTags (value, field, start, count, sort, callback) {
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const podInclude = {
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model: this.sequelize.models.Pod,
required: false
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}
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const authorInclude = {
model: this.sequelize.models.Author,
include: [
podInclude
]
}
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const tagInclude = {
model: this.sequelize.models.Tag
}
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const query = {
where: {},
offset: start,
limit: count,
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distinct: true, // For the count, a video can have many tags
order: [ modelUtils.getSort(sort), [ this.sequelize.models.Tag, 'name', 'ASC' ] ]
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}
// Make an exact search with the magnet
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if (field === 'magnetUri') {
const infoHash = magnetUtil.decode(value).infoHash
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query.where.infoHash = infoHash
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} else if (field === 'tags') {
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const escapedValue = this.sequelize.escape('%' + value + '%')
query.where = {
id: {
$in: this.sequelize.literal(
'(SELECT "VideoTags"."videoId" FROM "Tags" INNER JOIN "VideoTags" ON "Tags"."id" = "VideoTags"."tagId" WHERE name LIKE ' + escapedValue + ')'
)
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}
}
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} else if (field === 'host') {
// FIXME: Include our pod? (not stored in the database)
podInclude.where = {
host: {
$like: '%' + value + '%'
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}
}
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podInclude.required = true
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} else if (field === 'author') {
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authorInclude.where = {
name: {
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$like: '%' + value + '%'
}
}
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// authorInclude.or = true
} else {
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query.where[field] = {
$like: '%' + value + '%'
}
}
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query.include = [
authorInclude, tagInclude
]
if (tagInclude.where) {
// query.include.push([ this.sequelize.models.Tag ])
}
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return this.findAndCountAll(query).asCallback(function (err, result) {
if (err) return callback(err)
return callback(null, result.rows, result.count)
})
}
// ---------------------------------------------------------------------------
function removeThumbnail (video, callback) {
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fs.unlink(constants.CONFIG.STORAGE.THUMBNAILS_DIR + video.getThumbnailName(), callback)
}
function removeFile (video, callback) {
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fs.unlink(constants.CONFIG.STORAGE.VIDEOS_DIR + video.getVideoFilename(), callback)
}
function removeTorrent (video, callback) {
fs.unlink(constants.CONFIG.STORAGE.TORRENTS_DIR + video.getTorrentName(), callback)
}
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function removePreview (video, callback) {
// Same name than video thumnail
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fs.unlink(constants.CONFIG.STORAGE.PREVIEWS_DIR + video.getPreviewName(), callback)
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}
function createPreview (video, videoPath, callback) {
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generateImage(video, videoPath, constants.CONFIG.STORAGE.PREVIEWS_DIR, video.getPreviewName(), callback)
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}
function createThumbnail (video, videoPath, callback) {
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generateImage(video, videoPath, constants.CONFIG.STORAGE.THUMBNAILS_DIR, video.getThumbnailName(), constants.THUMBNAILS_SIZE, callback)
}
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function generateImage (video, videoPath, folder, imageName, size, callback) {
const options = {
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filename: imageName,
count: 1,
folder
}
if (!callback) {
callback = size
} else {
options.size = size
}
ffmpeg(videoPath)
.on('error', callback)
.on('end', function () {
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callback(null, imageName)
})
.thumbnail(options)
}