mirror of
https://github.com/koel/koel
synced 2024-12-20 01:23:16 +00:00
390 lines
10 KiB
TypeScript
390 lines
10 KiB
TypeScript
import isMobile from 'ismobilejs'
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import plyr from 'plyr'
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import { shuffle, throttle } from 'lodash'
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import {
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commonStore,
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preferenceStore as preferences,
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queueStore,
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recentlyPlayedStore,
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songStore,
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userStore
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} from '@/stores'
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import { arrayify, eventBus, isAudioContextSupported, logger } from '@/utils'
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import { audioService, socketService } from '@/services'
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/**
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* The number of seconds before the current song ends to start preload the next one.
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*/
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const PRELOAD_BUFFER = 30
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const DEFAULT_VOLUME_VALUE = 7
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const VOLUME_INPUT_SELECTOR = '#volumeInput'
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class PlaybackService {
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// @ts-ignore
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public player: Plyr
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// @ts-ignore
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private volumeInput: HTMLInputElement
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private repeatModes: RepeatMode[] = ['NO_REPEAT', 'REPEAT_ALL', 'REPEAT_ONE']
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private initialized = false
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public init () {
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if (this.initialized) {
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return
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}
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this.initialized = true
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this.player = plyr.setup('.plyr', {
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controls: []
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})[0]
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this.volumeInput = document.querySelector<HTMLInputElement>(VOLUME_INPUT_SELECTOR)!
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this.listenToMediaEvents(this.player.media)
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if (isAudioContextSupported) {
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try {
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this.setVolume(preferences.volume)
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} catch (e) {
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}
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audioService.init(this.player.media)
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eventBus.emit('INIT_EQUALIZER')
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}
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this.setMediaSessionActionHandlers()
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}
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public registerPlay (song: Song) {
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recentlyPlayedStore.add(song)
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songStore.registerPlay(song)
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song.play_count_registered = true
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}
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public preload (song: Song) {
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const audioElement = document.createElement('audio')
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audioElement.setAttribute('src', songStore.getSourceUrl(song))
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audioElement.setAttribute('preload', 'auto')
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audioElement.load()
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song.preloaded = true
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}
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/**
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* Play a song. Because
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*
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* So many adventures couldn't happen today,
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* So many songs we forgot to play
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* So many dreams swinging out of the blue
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* We'll let them come true
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*/
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public async play (song: Song) {
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// If for any reason (most likely a bug), the requested song has been deleted, just attempt the next song.
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if (song.deleted) {
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logger.warn('Attempted to play a deleted song', song)
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if (this.next && this.next.id !== song.id) {
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await this.playNext()
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}
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return
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}
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document.title = `${song.title} ♫ Koel`
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this.player.media.setAttribute('title', `${song.artist_name} - ${song.title}`)
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if (queueStore.current) {
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queueStore.current.playback_state = 'Stopped'
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}
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song.playback_state = 'Playing'
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// Manually set the `src` attribute of the audio to prevent plyr from resetting
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// the audio media object and cause our equalizer to malfunction.
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this.player.media.src = songStore.getSourceUrl(song)
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// We'll just "restart" playing the song, which will handle notification, scrobbling etc.
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// Fixes #898
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if (isAudioContextSupported) {
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await audioService.getContext().resume()
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}
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await this.restart()
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}
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public showNotification (song: Song) {
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if (!window.Notification || !preferences.notify) {
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return
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}
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try {
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const notification = new window.Notification(`♫ ${song.title}`, {
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icon: song.album_cover,
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body: `${song.album_name} – ${song.artist_name}`
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})
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notification.onclick = () => window.focus()
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window.setTimeout(() => notification.close(), 5000)
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} catch (e) {
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// Notification fails.
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// @link https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/showNotification
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logger.error(e)
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}
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navigator.mediaSession.metadata = new MediaMetadata({
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title: song.title,
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artist: song.artist_name,
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album: song.album_name,
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artwork: [
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{
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src: song.album_cover,
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sizes: '256x256',
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type: 'image/png'
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}
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]
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})
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}
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public async restart () {
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const song = queueStore.current!
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this.showNotification(song)
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// Record the UNIX timestamp the song starts playing, for scrobbling purpose
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song.play_start_time = Math.floor(Date.now() / 1000)
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song.play_count_registered = false
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socketService.broadcast('SOCKET_SONG', song)
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this.player.restart()
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try {
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await this.player.media.play()
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} catch (error) {
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// convert this into a warning, as an error will cause Cypress to fail the tests entirely
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logger.warn(error)
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}
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}
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public get isTranscoding () {
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return isMobile.any && preferences.transcodeOnMobile
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}
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/**
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* The next song in the queue.
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* If we're in REPEAT_ALL mode and there's no next song, just get the first song.
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*/
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public get next () {
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if (queueStore.next) {
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return queueStore.next
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}
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if (preferences.repeatMode === 'REPEAT_ALL') {
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return queueStore.first
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}
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}
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/**
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* The previous song in the queue.
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* If we're in REPEAT_ALL mode and there's no prev song, get the last song.
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*/
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public get previous () {
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if (queueStore.previous) {
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return queueStore.previous
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}
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if (preferences.repeatMode === 'REPEAT_ALL') {
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return queueStore.last
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}
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}
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/**
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* Circle through the repeat mode.
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* The selected mode will be stored into local storage as well.
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*/
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public changeRepeatMode () {
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let index = this.repeatModes.indexOf(preferences.repeatMode) + 1
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if (index >= this.repeatModes.length) {
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index = 0
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}
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preferences.repeatMode = this.repeatModes[index]
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}
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/**
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* Play the prev song in the queue, if one is found.
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* If the prev song is not found and the current mode is NO_REPEAT, we stop completely.
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*/
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public async playPrev () {
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// If the song's duration is greater than 5 seconds and we've passed 5 seconds into it,
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// restart playing instead.
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if (this.player.media.currentTime > 5 && queueStore.current!.length > 5) {
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this.player.restart()
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return
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}
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if (!this.previous && preferences.repeatMode === 'NO_REPEAT') {
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await this.stop()
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} else {
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this.previous && await this.play(this.previous)
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}
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}
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/**
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* Play the next song in the queue, if one is found.
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* If the next song is not found and the current mode is NO_REPEAT, we stop completely.
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*/
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public async playNext () {
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if (!this.next && preferences.repeatMode === 'NO_REPEAT') {
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await this.stop() // Nothing lasts forever, even cold November rain.
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} else {
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this.next && await this.play(this.next)
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}
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}
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public getVolume () {
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return preferences.volume
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}
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/**
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* @param {Number} volume 0-10
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* @param {Boolean=true} persist Whether the volume should be saved into local storage
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*/
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public setVolume (volume: number, persist = true) {
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this.player.setVolume(volume)
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persist && (preferences.volume = volume)
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this.volumeInput.value = String(volume)
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}
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public mute () {
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this.setVolume(0, false)
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}
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public unmute () {
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preferences.volume = preferences.volume || DEFAULT_VOLUME_VALUE
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this.setVolume(preferences.volume)
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}
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public async stop () {
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document.title = 'Koel'
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this.player.pause()
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this.player.seek(0)
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if (queueStore.current) {
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queueStore.current.playback_state = 'Stopped'
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}
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socketService.broadcast('SOCKET_PLAYBACK_STOPPED')
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}
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public pause () {
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this.player.pause()
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queueStore.current!.playback_state = 'Paused'
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socketService.broadcast('SOCKET_SONG', queueStore.current)
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}
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public async resume () {
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try {
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await this.player.media.play()
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} catch (error) {
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logger.error(error)
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}
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queueStore.current!.playback_state = 'Playing'
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socketService.broadcast('SOCKET_SONG', queueStore.current)
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}
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public async toggle () {
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if (!queueStore.current) {
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await this.playFirstInQueue()
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return
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}
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if (queueStore.current.playback_state !== 'Playing') {
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await this.resume()
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return
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}
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this.pause()
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}
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/**
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* Queue up songs (replace them into the queue) and start playing right away.
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*
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* @param {?Song[]} songs An array of song objects. Defaults to all songs if null.
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* @param {Boolean=false} shuffled Whether to shuffle the songs before playing.
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*/
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public async queueAndPlay (songs: Song | Song[], shuffled = false) {
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songs = arrayify(songs)
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if (shuffled) {
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songs = shuffle(songs)
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}
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await this.stop()
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queueStore.replaceQueueWith(songs)
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await this.play(queueStore.first)
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}
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public async playFirstInQueue () {
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queueStore.all.length && await this.play(queueStore.first)
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}
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private setMediaSessionActionHandlers () {
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if (!navigator.mediaSession) {
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return
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}
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navigator.mediaSession.setActionHandler('play', () => this.resume())
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navigator.mediaSession.setActionHandler('pause', () => this.pause())
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navigator.mediaSession.setActionHandler('previoustrack', () => this.playPrev())
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navigator.mediaSession.setActionHandler('nexttrack', () => this.playNext())
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}
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private listenToMediaEvents (mediaElement: HTMLMediaElement) {
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mediaElement.addEventListener('error', () => this.playNext(), true)
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mediaElement.addEventListener('ended', () => {
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if (commonStore.state.use_last_fm && userStore.current.preferences!.lastfm_session_key) {
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songStore.scrobble(queueStore.current!)
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}
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preferences.repeatMode === 'REPEAT_ONE' ? this.restart() : this.playNext()
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})
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let timeUpdateHandler = () => {
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const currentSong = queueStore.current
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if (!currentSong) return
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if (!currentSong.play_count_registered && !this.isTranscoding) {
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// if we've passed 25% of the song, it's safe to say the song has been "played".
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// Refer to https://github.com/koel/koel/issues/1087
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if (!mediaElement.duration || mediaElement.currentTime * 4 >= mediaElement.duration) {
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this.registerPlay(currentSong)
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}
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}
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const nextSong = queueStore.next
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if (!nextSong || nextSong.preloaded || this.isTranscoding) {
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return
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}
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if (mediaElement.duration && mediaElement.currentTime + PRELOAD_BUFFER > mediaElement.duration) {
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this.preload(nextSong)
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}
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}
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if (process.env.NODE_ENV !== 'test') {
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timeUpdateHandler = throttle(timeUpdateHandler, 1000)
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}
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mediaElement.addEventListener('timeupdate', timeUpdateHandler)
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}
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}
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export const playbackService = new PlaybackService()
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