mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2024-12-20 19:06:06 +01:00
272 lines
10 KiB
JavaScript
272 lines
10 KiB
JavaScript
const Path = require('path')
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const date = require('../libs/dateAndTime')
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const serverVersion = require('../../package.json').version
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const { PlayMethod } = require('../utils/constants')
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const PlaybackSession = require('../objects/PlaybackSession')
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const DeviceInfo = require('../objects/DeviceInfo')
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const Stream = require('../objects/Stream')
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const Logger = require('../Logger')
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const fs = require('../libs/fsExtra')
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const uaParserJs = require('../libs/uaParser')
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const requestIp = require('../libs/requestIp')
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class PlaybackSessionManager {
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constructor(db, emitter, clientEmitter) {
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this.db = db
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this.StreamsPath = Path.join(global.MetadataPath, 'streams')
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this.emitter = emitter
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this.clientEmitter = clientEmitter
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this.sessions = []
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this.localSessionLock = {}
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}
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getSession(sessionId) {
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return this.sessions.find(s => s.id === sessionId)
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}
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getUserSession(userId) {
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return this.sessions.find(s => s.userId === userId)
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}
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getStream(sessionId) {
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var session = this.getSession(sessionId)
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return session ? session.stream : null
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}
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getDeviceInfo(req) {
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const ua = uaParserJs(req.headers['user-agent'])
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const ip = requestIp.getClientIp(req)
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const clientDeviceInfo = req.body ? req.body.deviceInfo || null : null // From mobile client
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const deviceInfo = new DeviceInfo()
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deviceInfo.setData(ip, ua, clientDeviceInfo, serverVersion)
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return deviceInfo
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}
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async startSessionRequest(req, res, episodeId) {
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const deviceInfo = this.getDeviceInfo(req)
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const { user, libraryItem, body: options } = req
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const session = await this.startSession(user, deviceInfo, libraryItem, episodeId, options)
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res.json(session.toJSONForClient(libraryItem))
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}
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async syncSessionRequest(user, session, payload, res) {
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var result = await this.syncSession(user, session, payload)
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if (result) {
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res.json(session.toJSONForClient(result.libraryItem))
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}
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}
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async syncLocalSessionRequest(user, sessionJson, res) {
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if (this.localSessionLock[sessionJson.id]) {
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Logger.debug(`[PlaybackSessionManager] syncLocalSessionRequest: Local session is locked and already syncing`)
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return res.sendStatus(200)
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}
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var libraryItem = this.db.getLibraryItem(sessionJson.libraryItemId)
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if (!libraryItem) {
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Logger.error(`[PlaybackSessionManager] syncLocalSessionRequest: Library item not found for session "${sessionJson.libraryItemId}"`)
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return res.sendStatus(200)
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}
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this.localSessionLock[sessionJson.id] = true // Lock local session
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var session = await this.db.getPlaybackSession(sessionJson.id)
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if (!session) {
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// New session from local
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session = new PlaybackSession(sessionJson)
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await this.db.insertEntity('session', session)
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} else {
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session.currentTime = sessionJson.currentTime
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session.timeListening = sessionJson.timeListening
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session.updatedAt = sessionJson.updatedAt
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session.date = date.format(new Date(), 'YYYY-MM-DD')
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session.dayOfWeek = date.format(new Date(), 'dddd')
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await this.db.updateEntity('session', session)
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}
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session.currentTime = sessionJson.currentTime
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const itemProgressUpdate = {
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duration: session.duration,
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currentTime: session.currentTime,
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progress: session.progress,
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lastUpdate: session.updatedAt // Keep media progress update times the same as local
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}
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var wasUpdated = user.createUpdateMediaProgress(libraryItem, itemProgressUpdate, session.episodeId)
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if (wasUpdated) {
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await this.db.updateEntity('user', user)
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var itemProgress = user.getMediaProgress(session.libraryItemId, session.episodeId)
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this.clientEmitter(user.id, 'user_item_progress_updated', {
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id: itemProgress.id,
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data: itemProgress.toJSON()
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})
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}
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delete this.localSessionLock[sessionJson.id] // Unlock local session
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res.sendStatus(200)
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}
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async closeSessionRequest(user, session, syncData, res) {
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await this.closeSession(user, session, syncData)
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res.sendStatus(200)
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}
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async startSession(user, deviceInfo, libraryItem, episodeId, options) {
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// Close any sessions already open for user
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var userSessions = this.sessions.filter(playbackSession => playbackSession.userId === user.id)
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for (const session of userSessions) {
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Logger.info(`[PlaybackSessionManager] startSession: Closing open session "${session.displayTitle}" for user "${user.username}"`)
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await this.closeSession(user, session, null)
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}
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var shouldDirectPlay = options.forceDirectPlay || (!options.forceTranscode && libraryItem.media.checkCanDirectPlay(options, episodeId))
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var mediaPlayer = options.mediaPlayer || 'unknown'
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const userProgress = user.getMediaProgress(libraryItem.id, episodeId)
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var userStartTime = 0
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if (userProgress) userStartTime = Number.parseFloat(userProgress.currentTime) || 0
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const newPlaybackSession = new PlaybackSession()
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newPlaybackSession.setData(libraryItem, user, mediaPlayer, deviceInfo, userStartTime, episodeId)
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if (libraryItem.mediaType === 'video') {
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if (shouldDirectPlay) {
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Logger.debug(`[PlaybackSessionManager] "${user.username}" starting direct play session for item "${libraryItem.id}"`)
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newPlaybackSession.videoTrack = libraryItem.media.getVideoTrack()
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newPlaybackSession.playMethod = PlayMethod.DIRECTPLAY
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} else {
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// HLS not supported for video yet
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}
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} else {
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var audioTracks = []
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if (shouldDirectPlay) {
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Logger.debug(`[PlaybackSessionManager] "${user.username}" starting direct play session for item "${libraryItem.id}"`)
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audioTracks = libraryItem.getDirectPlayTracklist(episodeId)
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newPlaybackSession.playMethod = PlayMethod.DIRECTPLAY
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} else {
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Logger.debug(`[PlaybackSessionManager] "${user.username}" starting stream session for item "${libraryItem.id}"`)
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var stream = new Stream(newPlaybackSession.id, this.StreamsPath, user, libraryItem, episodeId, userStartTime, this.clientEmitter.bind(this))
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await stream.generatePlaylist()
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stream.start() // Start transcode
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audioTracks = [stream.getAudioTrack()]
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newPlaybackSession.stream = stream
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newPlaybackSession.playMethod = PlayMethod.TRANSCODE
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stream.on('closed', () => {
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Logger.debug(`[PlaybackSessionManager] Stream closed for session "${newPlaybackSession.id}"`)
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newPlaybackSession.stream = null
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})
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}
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newPlaybackSession.audioTracks = audioTracks
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}
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// Will save on the first sync
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user.currentSessionId = newPlaybackSession.id
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this.sessions.push(newPlaybackSession)
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this.emitter('user_stream_update', user.toJSONForPublic(this.sessions, this.db.libraryItems))
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return newPlaybackSession
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}
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async syncSession(user, session, syncData) {
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var libraryItem = this.db.libraryItems.find(li => li.id === session.libraryItemId)
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if (!libraryItem) {
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Logger.error(`[PlaybackSessionManager] syncSession Library Item not found "${session.libraryItemId}"`)
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return null
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}
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session.currentTime = syncData.currentTime
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session.addListeningTime(syncData.timeListened)
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Logger.debug(`[PlaybackSessionManager] syncSession "${session.id}" | Total Time Listened: ${session.timeListening}`)
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const itemProgressUpdate = {
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duration: syncData.duration,
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currentTime: syncData.currentTime,
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progress: session.progress
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}
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var wasUpdated = user.createUpdateMediaProgress(libraryItem, itemProgressUpdate, session.episodeId)
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if (wasUpdated) {
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await this.db.updateEntity('user', user)
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var itemProgress = user.getMediaProgress(session.libraryItemId, session.episodeId)
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this.clientEmitter(user.id, 'user_item_progress_updated', {
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id: itemProgress.id,
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data: itemProgress.toJSON()
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})
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}
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this.saveSession(session)
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return {
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libraryItem
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}
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}
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async closeSession(user, session, syncData = null) {
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if (syncData) {
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await this.syncSession(user, session, syncData)
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} else {
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await this.saveSession(session)
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}
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Logger.debug(`[PlaybackSessionManager] closeSession "${session.id}"`)
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this.emitter('user_stream_update', user.toJSONForPublic(this.sessions, this.db.libraryItems))
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return this.removeSession(session.id)
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}
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saveSession(session) {
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if (!session.timeListening) return // Do not save a session with no listening time
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if (session.lastSave) {
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return this.db.updateEntity('session', session)
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} else {
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session.lastSave = Date.now()
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return this.db.insertEntity('session', session)
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}
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}
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async removeSession(sessionId) {
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var session = this.sessions.find(s => s.id === sessionId)
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if (!session) return
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if (session.stream) {
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await session.stream.close()
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}
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this.sessions = this.sessions.filter(s => s.id !== sessionId)
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Logger.debug(`[PlaybackSessionManager] Removed session "${sessionId}"`)
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}
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// Check for streams that are not in memory and remove
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async removeOrphanStreams() {
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await fs.ensureDir(this.StreamsPath)
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try {
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var streamsInPath = await fs.readdir(this.StreamsPath)
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for (let i = 0; i < streamsInPath.length; i++) {
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var streamId = streamsInPath[i]
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if (streamId.startsWith('play_')) { // Make sure to only remove folders that are a stream
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var session = this.sessions.find(se => se.id === streamId)
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if (!session) {
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var streamPath = Path.join(this.StreamsPath, streamId)
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Logger.debug(`[PlaybackSessionManager] Removing orphan stream "${streamPath}"`)
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await fs.remove(streamPath)
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}
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}
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}
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} catch (error) {
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Logger.error(`[PlaybackSessionManager] cleanOrphanStreams failed`, error)
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}
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}
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// Android app v0.9.54 and below had a bug where listening time was sending unix timestamp
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// See https://github.com/advplyr/audiobookshelf/issues/868
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// Remove playback sessions with listening time too high
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async removeInvalidSessions() {
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const selectFunc = (session) => isNaN(session.timeListening) || Number(session.timeListening) > 3600000000
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const numSessionsRemoved = await this.db.removeEntities('session', selectFunc)
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if (numSessionsRemoved) {
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Logger.info(`[PlaybackSessionManager] Removed ${numSessionsRemoved} invalid playback sessions`)
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}
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}
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}
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module.exports = PlaybackSessionManager
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