2022-02-23 00:33:55 +01:00
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import LocalPlayer from './LocalPlayer'
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import CastPlayer from './CastPlayer'
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import AudioTrack from './AudioTrack'
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export default class PlayerHandler {
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constructor(ctx) {
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this.ctx = ctx
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this.libraryItem = null
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this.playWhenReady = false
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this.player = null
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this.playerState = 'IDLE'
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this.isHlsTranscode = false
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this.currentSessionId = null
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this.startTime = 0
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this.lastSyncTime = 0
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this.lastSyncedAt = 0
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this.listeningTimeSinceSync = 0
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this.playInterval = null
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}
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get isCasting() {
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return this.ctx.$store.state.globals.isCasting
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}
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get isPlayingCastedItem() {
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return this.libraryItem && (this.player instanceof CastPlayer)
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}
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get isPlayingLocalItem() {
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return this.libraryItem && (this.player instanceof LocalPlayer)
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}
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get userToken() {
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return this.ctx.$store.getters['user/getToken']
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}
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get playerPlaying() {
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return this.playerState === 'PLAYING'
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}
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load(libraryItem, playWhenReady) {
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if (!this.player) this.switchPlayer()
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this.libraryItem = libraryItem
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this.playWhenReady = playWhenReady
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this.prepare()
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}
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switchPlayer() {
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if (this.isCasting && !(this.player instanceof CastPlayer)) {
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console.log('[PlayerHandler] Switching to cast player')
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this.stopPlayInterval()
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this.playerStateChange('LOADING')
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this.startTime = this.player ? this.player.getCurrentTime() : this.startTime
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if (this.player) {
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this.player.destroy()
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}
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this.player = new CastPlayer(this.ctx)
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this.setPlayerListeners()
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if (this.libraryItem) {
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// libraryItem was already loaded - prepare for cast
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this.playWhenReady = false
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this.prepare()
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}
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} else if (!this.isCasting && !(this.player instanceof LocalPlayer)) {
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console.log('[PlayerHandler] Switching to local player')
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this.stopPlayInterval()
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this.playerStateChange('LOADING')
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if (this.player) {
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this.player.destroy()
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}
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this.player = new LocalPlayer(this.ctx)
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this.setPlayerListeners()
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if (this.libraryItem) {
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// libraryItem was already loaded - prepare for local play
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this.playWhenReady = false
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this.prepare()
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}
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}
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}
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setPlayerListeners() {
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this.player.on('stateChange', this.playerStateChange.bind(this))
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this.player.on('timeupdate', this.playerTimeupdate.bind(this))
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this.player.on('buffertimeUpdate', this.playerBufferTimeUpdate.bind(this))
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this.player.on('error', this.playerError.bind(this))
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}
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playerError() {
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// Switch to HLS stream on error
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if (!this.isCasting && !this.currentStreamId && (this.player instanceof LocalPlayer)) {
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console.log(`[PlayerHandler] Audio player error switching to HLS stream`)
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this.prepare(true)
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}
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}
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playerStateChange(state) {
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console.log('[PlayerHandler] Player state change', state)
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this.playerState = state
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if (this.playerState === 'PLAYING') {
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this.startPlayInterval()
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} else {
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this.stopPlayInterval()
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}
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if (this.playerState === 'LOADED' || this.playerState === 'PLAYING') {
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this.ctx.setDuration(this.getDuration())
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}
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if (this.playerState !== 'LOADING') {
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this.ctx.setCurrentTime(this.player.getCurrentTime())
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}
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this.ctx.isPlaying = this.playerState === 'PLAYING'
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this.ctx.playerLoading = this.playerState === 'LOADING'
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}
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playerTimeupdate(time) {
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this.ctx.setCurrentTime(time)
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}
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playerBufferTimeUpdate(buffertime) {
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this.ctx.setBufferTime(buffertime)
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}
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async prepare(forceTranscode = false) {
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var payload = {
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supportedMimeTypes: Object.keys(this.player.playableMimeTypes),
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mediaPlayer: this.isCasting ? 'chromecast' : 'html5',
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forceTranscode,
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forceDirectPlay: this.isCasting // TODO: add transcode support for chromecast
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}
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var session = await this.ctx.$axios.$post(`/api/items/${this.libraryItem.id}/play`, payload).catch((error) => {
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console.error('Failed to start stream', error)
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})
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this.prepareSession(session)
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}
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prepareOpenSession(session) { // Session opened on init socket
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if (!this.player) this.switchPlayer()
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this.libraryItem = session.libraryItem
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this.playWhenReady = false
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this.prepareSession(session)
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}
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prepareSession(session) {
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this.startTime = session.currentTime
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this.currentSessionId = session.id
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console.log('[PlayerHandler] Preparing Session', session)
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var audioTracks = session.audioTracks.map(at => new AudioTrack(at, this.userToken))
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this.ctx.playerLoading = true
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this.isHlsTranscode = true
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if (session.playMethod === this.ctx.$constants.PlayMethod.DIRECTPLAY) {
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this.isHlsTranscode = false
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}
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this.player.set(this.libraryItem, audioTracks, this.isHlsTranscode, this.startTime, this.playWhenReady)
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}
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closePlayer() {
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console.log('[PlayerHandler] Close Player')
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this.sendCloseSession()
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if (this.player) {
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this.player.destroy()
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}
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this.player = null
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this.playerState = 'IDLE'
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this.libraryItem = null
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this.startTime = 0
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this.stopPlayInterval()
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}
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resetStream(startTime, streamId) {
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if (this.isHlsTranscode && this.currentSessionId === streamId) {
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this.player.resetStream(startTime)
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} else {
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console.warn('resetStream mismatch streamId', this.currentSessionId, streamId)
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}
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}
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startPlayInterval() {
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clearInterval(this.playInterval)
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var lastTick = Date.now()
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this.playInterval = setInterval(() => {
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// Update UI
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if (!this.player) return
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var currentTime = this.player.getCurrentTime()
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this.ctx.setCurrentTime(currentTime)
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var exactTimeElapsed = ((Date.now() - lastTick) / 1000)
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lastTick = Date.now()
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this.listeningTimeSinceSync += exactTimeElapsed
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if (this.listeningTimeSinceSync >= 5) {
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this.sendProgressSync(currentTime)
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}
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}, 1000)
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}
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sendCloseSession() {
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var syncData = null
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if (this.player) {
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var listeningTimeToAdd = Math.max(0, Math.floor(this.listeningTimeSinceSync))
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syncData = {
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timeListened: listeningTimeToAdd,
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duration: this.getDuration(),
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currentTime: this.getCurrentTime()
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}
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}
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this.listeningTimeSinceSync = 0
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return this.ctx.$axios.$post(`/api/session/${this.currentSessionId}/close`, syncData, { timeout: 1000 }).catch((error) => {
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console.error('Failed to close session', error)
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})
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}
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sendProgressSync(currentTime) {
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var diffSinceLastSync = Math.abs(this.lastSyncTime - currentTime)
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if (diffSinceLastSync < 1) return
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this.lastSyncTime = currentTime
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var listeningTimeToAdd = Math.max(0, Math.floor(this.listeningTimeSinceSync))
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var syncData = {
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timeListened: listeningTimeToAdd,
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duration: this.getDuration(),
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currentTime
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}
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this.listeningTimeSinceSync = 0
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this.ctx.$axios.$post(`/api/session/${this.currentSessionId}/sync`, syncData, { timeout: 1000 }).catch((error) => {
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console.error('Failed to update session progress', error)
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})
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}
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stopPlayInterval() {
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clearInterval(this.playInterval)
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this.playInterval = null
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}
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playPause() {
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if (this.player) this.player.playPause()
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}
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play() {
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if (this.player) this.player.play()
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}
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pause() {
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if (this.player) this.player.pause()
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}
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getCurrentTime() {
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return this.player ? this.player.getCurrentTime() : 0
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}
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getDuration() {
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return this.player ? this.player.getDuration() : 0
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}
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jumpBackward() {
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if (!this.player) return
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var currentTime = this.getCurrentTime()
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this.seek(Math.max(0, currentTime - 10))
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}
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jumpForward() {
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if (!this.player) return
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var currentTime = this.getCurrentTime()
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this.seek(Math.min(currentTime + 10, this.getDuration()))
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}
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setVolume(volume) {
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if (!this.player) return
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this.player.setVolume(volume)
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}
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setPlaybackRate(playbackRate) {
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if (!this.player) return
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this.player.setPlaybackRate(playbackRate)
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}
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seek(time) {
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if (!this.player) return
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this.player.seek(time, this.playerPlaying)
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this.ctx.setCurrentTime(time)
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// Update progress if paused
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if (!this.playerPlaying) {
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this.sendProgressSync(time)
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}
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}
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}
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