mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2024-12-20 19:06:06 +01:00
355 lines
14 KiB
JavaScript
355 lines
14 KiB
JavaScript
const uuidv4 = require("uuid").v4
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const Path = require('path')
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const serverVersion = require('../../package.json').version
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const Logger = require('../Logger')
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const SocketAuthority = require('../SocketAuthority')
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const Database = require('../Database')
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const date = require('../libs/dateAndTime')
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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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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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class PlaybackSessionManager {
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constructor() {
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this.StreamsPath = Path.join(global.MetadataPath, 'streams')
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this.oldPlaybackSessionMap = {} // TODO: Remove after updated mobile versions
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this.sessions = []
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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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const session = this.getSession(sessionId)
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return session?.stream || null
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}
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async 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?.deviceInfo || null
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const deviceInfo = new DeviceInfo()
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deviceInfo.setData(ip, ua, clientDeviceInfo, serverVersion, req.user.id)
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if (clientDeviceInfo?.deviceId) {
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const existingDevice = await Database.getDeviceByDeviceId(clientDeviceInfo.deviceId)
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if (existingDevice) {
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if (existingDevice.update(deviceInfo)) {
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await Database.updateDevice(existingDevice)
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}
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return existingDevice
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}
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}
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await Database.createDevice(deviceInfo)
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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 = await this.getDeviceInfo(req)
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Logger.debug(`[PlaybackSessionManager] startSessionRequest for device ${deviceInfo.deviceDescription}`)
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const { user, libraryItem, body: options } = req
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const session = await this.startSession(user, deviceInfo, libraryItem, episodeId, options)
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res.json(session.toJSONForClient(libraryItem))
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}
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async syncSessionRequest(user, session, payload, res) {
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if (await this.syncSession(user, session, payload)) {
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res.sendStatus(200)
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} else {
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res.sendStatus(500)
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}
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}
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async syncLocalSessionsRequest(req, res) {
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const deviceInfo = await this.getDeviceInfo(req)
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const user = req.user
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const sessions = req.body.sessions || []
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const syncResults = []
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for (const sessionJson of sessions) {
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Logger.info(`[PlaybackSessionManager] Syncing local session "${sessionJson.displayTitle}" (${sessionJson.id})`)
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const result = await this.syncLocalSession(user, sessionJson, deviceInfo)
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syncResults.push(result)
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}
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res.json({
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results: syncResults
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})
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}
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async syncLocalSession(user, sessionJson, deviceInfo) {
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const libraryItem = Database.getLibraryItem(sessionJson.libraryItemId)
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const episode = (sessionJson.episodeId && libraryItem && libraryItem.isPodcast) ? libraryItem.media.getEpisode(sessionJson.episodeId) : null
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if (!libraryItem || (libraryItem.isPodcast && !episode)) {
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Logger.error(`[PlaybackSessionManager] syncLocalSession: Media item not found for session "${sessionJson.displayTitle}" (${sessionJson.id})`)
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return {
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id: sessionJson.id,
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success: false,
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error: 'Media item not found'
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}
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}
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sessionJson.userId = user.id
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sessionJson.serverVersion = serverVersion
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// TODO: Temp update local playback session id to uuidv4 & library item/book/episode ids
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if (sessionJson.id?.startsWith('play_local_')) {
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if (!this.oldPlaybackSessionMap[sessionJson.id]) {
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const newSessionId = uuidv4()
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this.oldPlaybackSessionMap[sessionJson.id] = newSessionId
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sessionJson.id = newSessionId
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} else {
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sessionJson.id = this.oldPlaybackSessionMap[sessionJson.id]
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}
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}
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if (sessionJson.libraryItemId !== libraryItem.id) {
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Logger.info(`[PlaybackSessionManager] Mapped old libraryItemId "${sessionJson.libraryItemId}" to ${libraryItem.id}`)
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sessionJson.libraryItemId = libraryItem.id
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sessionJson.bookId = episode ? null : libraryItem.media.id
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}
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if (!sessionJson.bookId && !episode) {
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sessionJson.bookId = libraryItem.media.id
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}
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if (episode && sessionJson.episodeId !== episode.id) {
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Logger.info(`[PlaybackSessionManager] Mapped old episodeId "${sessionJson.episodeId}" to ${episode.id}`)
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sessionJson.episodeId = episode.id
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}
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if (sessionJson.libraryId !== libraryItem.libraryId) {
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sessionJson.libraryId = libraryItem.libraryId
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}
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let session = await Database.getPlaybackSession(sessionJson.id)
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if (!session) {
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// New session from local
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session = new PlaybackSession(sessionJson)
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session.deviceInfo = deviceInfo
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Logger.debug(`[PlaybackSessionManager] Inserting new session for "${session.displayTitle}" (${session.id})`)
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await Database.createPlaybackSession(session)
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} else {
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session.currentTime = sessionJson.currentTime
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session.timeListening = sessionJson.timeListening
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session.updatedAt = sessionJson.updatedAt
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session.date = date.format(new Date(), 'YYYY-MM-DD')
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session.dayOfWeek = date.format(new Date(), 'dddd')
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Logger.debug(`[PlaybackSessionManager] Updated session for "${session.displayTitle}" (${session.id})`)
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await Database.updatePlaybackSession(session)
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}
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const result = {
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id: session.id,
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success: true,
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progressSynced: false
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}
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const userProgressForItem = user.getMediaProgress(session.libraryItemId, session.episodeId)
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if (userProgressForItem) {
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if (userProgressForItem.lastUpdate > session.updatedAt) {
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Logger.debug(`[PlaybackSessionManager] Not updating progress for "${session.displayTitle}" because it has been updated more recently`)
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} else {
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Logger.debug(`[PlaybackSessionManager] Updating progress for "${session.displayTitle}" with current time ${session.currentTime} (previously ${userProgressForItem.currentTime})`)
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result.progressSynced = user.createUpdateMediaProgress(libraryItem, session.mediaProgressObject, session.episodeId)
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}
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} else {
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Logger.debug(`[PlaybackSessionManager] Creating new media progress for media item "${session.displayTitle}"`)
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result.progressSynced = user.createUpdateMediaProgress(libraryItem, session.mediaProgressObject, session.episodeId)
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}
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// Update user and emit socket event
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if (result.progressSynced) {
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const itemProgress = user.getMediaProgress(session.libraryItemId, session.episodeId)
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if (itemProgress) await Database.upsertMediaProgress(itemProgress)
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SocketAuthority.clientEmitter(user.id, 'user_item_progress_updated', {
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id: itemProgress.id,
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sessionId: session.id,
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deviceDescription: session.deviceDescription,
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data: itemProgress.toJSON()
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})
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}
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return result
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}
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async syncLocalSessionRequest(req, res) {
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const deviceInfo = await this.getDeviceInfo(req)
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const user = req.user
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const sessionJson = req.body
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const result = await this.syncLocalSession(user, sessionJson, deviceInfo)
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if (result.error) {
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res.status(500).send(result.error)
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} else {
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res.sendStatus(200)
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}
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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 and device
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const userSessions = this.sessions.filter(playbackSession => playbackSession.userId === user.id && playbackSession.deviceId === deviceInfo.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}" (Device: ${session.deviceDescription})`)
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await this.closeSession(user, session, null)
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}
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const shouldDirectPlay = options.forceDirectPlay || (!options.forceTranscode && libraryItem.media.checkCanDirectPlay(options, episodeId))
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const mediaPlayer = options.mediaPlayer || 'unknown'
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const userProgress = libraryItem.isMusic ? null : user.getMediaProgress(libraryItem.id, episodeId)
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let userStartTime = 0
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if (userProgress) {
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if (userProgress.isFinished) {
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Logger.info(`[PlaybackSessionManager] Starting session for user "${user.username}" and resetting progress for finished item "${libraryItem.media.metadata.title}"`)
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// Keep userStartTime as 0 so the client restarts the media
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} else {
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userStartTime = Number.parseFloat(userProgress.currentTime) || 0
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}
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}
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const newPlaybackSession = new PlaybackSession()
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newPlaybackSession.setData(libraryItem, user, mediaPlayer, deviceInfo, userStartTime, episodeId)
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if (libraryItem.mediaType === 'video') {
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if (shouldDirectPlay) {
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Logger.debug(`[PlaybackSessionManager] "${user.username}" starting direct play session for item "${libraryItem.id}" with id ${newPlaybackSession.id}`)
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newPlaybackSession.videoTrack = libraryItem.media.getVideoTrack()
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newPlaybackSession.playMethod = PlayMethod.DIRECTPLAY
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} else {
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// HLS not supported for video yet
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}
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} else {
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let audioTracks = []
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if (shouldDirectPlay) {
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Logger.debug(`[PlaybackSessionManager] "${user.username}" starting direct play session for item "${libraryItem.id}" with id ${newPlaybackSession.id} (Device: ${newPlaybackSession.deviceDescription})`)
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audioTracks = libraryItem.getDirectPlayTracklist(episodeId)
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newPlaybackSession.playMethod = PlayMethod.DIRECTPLAY
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} else {
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Logger.debug(`[PlaybackSessionManager] "${user.username}" starting stream session for item "${libraryItem.id}" (Device: ${newPlaybackSession.deviceDescription})`)
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const stream = new Stream(newPlaybackSession.id, this.StreamsPath, user, libraryItem, episodeId, userStartTime)
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await stream.generatePlaylist()
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stream.start() // Start transcode
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audioTracks = [stream.getAudioTrack()]
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newPlaybackSession.stream = stream
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newPlaybackSession.playMethod = PlayMethod.TRANSCODE
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stream.on('closed', () => {
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Logger.debug(`[PlaybackSessionManager] Stream closed for session "${newPlaybackSession.id}" (Device: ${newPlaybackSession.deviceDescription})`)
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newPlaybackSession.stream = null
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})
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}
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newPlaybackSession.audioTracks = audioTracks
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}
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this.sessions.push(newPlaybackSession)
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SocketAuthority.adminEmitter('user_stream_update', user.toJSONForPublic(this.sessions, Database.libraryItems))
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return newPlaybackSession
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}
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async syncSession(user, session, syncData) {
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const libraryItem = Database.libraryItems.find(li => li.id === session.libraryItemId)
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if (!libraryItem) {
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Logger.error(`[PlaybackSessionManager] syncSession Library Item not found "${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}" (Device: ${session.deviceDescription}) | 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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const wasUpdated = user.createUpdateMediaProgress(libraryItem, itemProgressUpdate, session.episodeId)
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if (wasUpdated) {
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const itemProgress = user.getMediaProgress(session.libraryItemId, session.episodeId)
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if (itemProgress) await Database.upsertMediaProgress(itemProgress)
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SocketAuthority.clientEmitter(user.id, 'user_item_progress_updated', {
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id: itemProgress.id,
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sessionId: session.id,
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deviceDescription: session.deviceDescription,
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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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SocketAuthority.adminEmitter('user_stream_update', user.toJSONForPublic(this.sessions, Database.libraryItems))
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SocketAuthority.clientEmitter(session.userId, 'user_session_closed', session.id)
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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 Database.updatePlaybackSession(session)
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} else {
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session.lastSave = Date.now()
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return Database.createPlaybackSession(session)
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}
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}
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async removeSession(sessionId) {
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const 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 "${sessionId}"`)
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}
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// Check for streams that are not in memory and remove
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async removeOrphanStreams() {
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await fs.ensureDir(this.StreamsPath)
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try {
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const streamsInPath = await fs.readdir(this.StreamsPath)
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for (let i = 0; i < streamsInPath.length; i++) {
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const streamId = streamsInPath[i]
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if (streamId.startsWith('play_')) { // Make sure to only remove folders that are a stream
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const session = this.sessions.find(se => se.id === streamId)
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if (!session) {
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const streamPath = Path.join(this.StreamsPath, streamId)
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Logger.debug(`[PlaybackSessionManager] Removing orphan stream "${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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}
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module.exports = PlaybackSessionManager
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