PeerTube/server/models/video.js

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'use strict'
const createTorrent = require('create-torrent')
const ffmpeg = require('fluent-ffmpeg')
const fs = require('fs')
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const parallel = require('async/parallel')
const parseTorrent = require('parse-torrent')
const pathUtils = require('path')
const magnet = require('magnet-uri')
const mongoose = require('mongoose')
const constants = require('../initializers/constants')
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const customVideosValidators = require('../helpers/custom-validators').videos
const logger = require('../helpers/logger')
const modelUtils = require('./utils')
const utils = require('../helpers/utils')
// ---------------------------------------------------------------------------
// TODO: add indexes on searchable columns
const VideoSchema = mongoose.Schema({
name: String,
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filename: String,
description: String,
magnetUri: String,
podUrl: String,
author: String,
duration: Number,
thumbnail: String,
tags: [ String ],
createdDate: {
type: Date,
default: Date.now
}
})
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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) {
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return customVideosValidators.isVideoThumbnailValid(value) || customVideosValidators.isVideoThumbnail64Valid(value)
})
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VideoSchema.path('tags').validate(customVideosValidators.isVideoTagsValid)
VideoSchema.methods = {
isOwned,
toFormatedJSON,
toRemoteJSON
}
VideoSchema.statics = {
getDurationFromFile,
listForApi,
listByUrlAndMagnet,
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listByUrl,
listOwned,
listOwnedByAuthor,
listRemotes,
load,
search
}
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)
}
)
}
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parallel(tasks, next)
})
VideoSchema.pre('save', function (next) {
const video = this
const tasks = []
if (video.isOwned()) {
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const videoPath = pathUtils.join(constants.CONFIG.STORAGE.VIDEOS_DIR, video.filename)
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this.podUrl = constants.CONFIG.WEBSERVER.URL
tasks.push(
// TODO: refractoring
function (callback) {
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const options = {
announceList: [
[ constants.CONFIG.WEBSERVER.WS + '://' + constants.CONFIG.WEBSERVER.HOST + ':' + constants.CONFIG.WEBSERVER.PORT + '/tracker/socket' ]
],
urlList: [
constants.CONFIG.WEBSERVER.URL + constants.STATIC_PATHS.WEBSEED + video.filename
]
}
createTorrent(videoPath, options, function (err, torrent) {
if (err) return callback(err)
fs.writeFile(constants.CONFIG.STORAGE.TORRENTS_DIR + video.filename + '.torrent', torrent, function (err) {
if (err) return callback(err)
const parsedTorrent = parseTorrent(torrent)
parsedTorrent.xs = video.podUrl + constants.STATIC_PATHS.TORRENTS + video.filename + '.torrent'
video.magnetUri = magnet.encode(parsedTorrent)
callback(null)
})
})
},
function (callback) {
createThumbnail(videoPath, callback)
}
)
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parallel(tasks, function (err, results) {
if (err) return next(err)
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 () {
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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.STATIC_PATHS.THUMBNAILS + '/' + this.thumbnail,
createdDate: this.createdDate
}
return json
}
function toRemoteJSON (callback) {
const self = this
// Convert thumbnail to base64
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fs.readFile(pathUtils.join(constants.CONFIG.STORAGE.THUMBNAILS_DIR, 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,
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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 listForApi (start, count, sort, callback) {
const query = {}
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return modelUtils.listForApiWithCount.call(this, query, start, count, sort, callback)
}
function listByUrlAndMagnet (fromUrl, magnetUri, callback) {
this.find({ podUrl: fromUrl, magnetUri: magnetUri }, callback)
}
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function listByUrl (fromUrl, callback) {
this.find({ podUrl: fromUrl }, callback)
}
function listOwned (callback) {
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// 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) {
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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)
}
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modelUtils.listForApiWithCount.call(this, query, start, count, sort, callback)
}
// ---------------------------------------------------------------------------
function removeThumbnail (video, callback) {
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fs.unlink(constants.CONFIG.STORAGE.THUMBNAILS_DIR + video.thumbnail, callback)
}
function removeFile (video, callback) {
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fs.unlink(constants.CONFIG.STORAGE.VIDEOS_DIR + 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) {
fs.unlink(constants.CONFIG.STORAGE.TORRENTS_DIR + video.filename + '.torrent', callback)
}
function createThumbnail (videoPath, callback) {
const filename = pathUtils.basename(videoPath) + '.jpg'
ffmpeg(videoPath)
.on('error', callback)
.on('end', function () {
callback(null, filename)
})
.thumbnail({
count: 1,
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folder: constants.CONFIG.STORAGE.THUMBNAILS_DIR,
size: constants.THUMBNAILS_SIZE,
filename: filename
})
}
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'
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fs.writeFile(constants.CONFIG.STORAGE.THUMBNAILS_DIR + thumbnailName, data, { encoding: 'base64' }, function (err) {
if (err) return callback(err)
return callback(null, thumbnailName)
})
})
}