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import { AnimeNotifier } from "../AnimeNotifier"
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var audioContext: AudioContext
var audioNode: AudioBufferSourceNode
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var gainNode: GainNode
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var volume = 0.5
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var volumeTimeConstant = 0.01
var volumeSmoothingDelay = 0.05
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var playId = 0
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var audioPlayer = document.getElementById("audio-player")
var audioPlayerPlay = document.getElementById("audio-player-play")
var audioPlayerPause = document.getElementById("audio-player-pause")
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var trackLink = document.getElementById("audio-player-track-title") as HTMLLinkElement
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var animeLink = document.getElementById("audio-player-anime-link") as HTMLLinkElement
var animeImage = document.getElementById("audio-player-anime-image") as HTMLImageElement
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// Play audio
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export function playAudio(arn: AnimeNotifier, element: HTMLElement) {
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playAudioFile(arn, element.dataset.soundtrackId, element.dataset.audioSrc)
}
// Play audio file
function playAudioFile(arn: AnimeNotifier, trackId: string, trackUrl: string) {
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if(!audioContext) {
audioContext = new AudioContext()
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gainNode = audioContext.createGain()
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gainNode.gain.setTargetAtTime(volume, audioContext.currentTime + volumeSmoothingDelay, volumeTimeConstant)
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}
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playId++
let currentPlayId = playId
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// Stop current track
stopAudio(arn)
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arn.currentSoundTrackId = trackId
arn.markPlayingSoundTrack()
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arn.loading(true)
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// Request
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let request = new XMLHttpRequest()
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request.open("GET", trackUrl, true)
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request.responseType = "arraybuffer"
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request.onload = () => {
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arn.loading(false)
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if(currentPlayId !== playId) {
return
}
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audioContext.decodeAudioData(request.response, async buffer => {
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if(currentPlayId !== playId) {
return
}
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audioNode = audioContext.createBufferSource()
audioNode.buffer = buffer
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audioNode.connect(gainNode)
gainNode.connect(audioContext.destination)
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audioNode.start(0)
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audioNode.onended = (event: MediaStreamErrorEvent) => {
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if(currentPlayId !== playId) {
return
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}
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playNextTrack(arn)
// stopAudio(arn)
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}
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// Set track title
let trackInfoResponse = await fetch("/api/soundtrack/" + trackId)
let track = await trackInfoResponse.json()
trackLink.href = "/soundtrack/" + track.id
trackLink.innerText = track.title
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let animeId = ""
for(let tag of (track.tags as string[])) {
if(tag.startsWith("anime:")) {
animeId = tag.split(":")[1]
break
}
}
// Set anime info
if(animeId !== "") {
let animeResponse = await fetch("/api/anime/" + animeId)
let anime = await animeResponse.json()
animeLink.title = anime.title.canonical
animeLink.href = "/anime/" + anime.id
animeImage.dataset.src = "//media.notify.moe/images/anime/small/" + anime.id + anime.imageExtension
animeImage.classList.remove("hidden")
animeImage["became visible"]()
}
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}, console.error)
}
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request.onerror = () => {
arn.loading(false)
}
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request.send()
// Show audio player
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audioPlayer.classList.remove("fade-out")
audioPlayerPlay.classList.add("fade-out")
audioPlayerPause.classList.remove("fade-out")
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}
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// Stop audio
export function stopAudio(arn: AnimeNotifier) {
arn.currentSoundTrackId = undefined
// Remove CSS class "playing"
let playingElements = document.getElementsByClassName("playing")
for(let playing of playingElements) {
playing.classList.remove("playing")
}
// Fade out sidebar player
audioPlayer.classList.add("fade-out")
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// Remove title
trackLink.href = ""
trackLink.innerText = ""
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// Hide anime info
animeLink.href = ""
animeImage.classList.add("hidden")
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if(gainNode) {
gainNode.disconnect()
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}
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if(audioNode) {
audioNode.stop()
audioNode.disconnect()
audioNode = null
}
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}
// Toggle audio
export function toggleAudio(arn: AnimeNotifier, element: HTMLElement) {
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// If we're clicking on the same track again, stop playing.
// Otherwise, start the track we clicked on.
if(arn.currentSoundTrackId && element.dataset.soundtrackId === arn.currentSoundTrackId) {
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stopAudio(arn)
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} else {
playAudio(arn, element)
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}
}
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// Play previous track
export async function playPreviousTrack(arn: AnimeNotifier) {
alert("Previous track is currently work in progress! Check back later :)")
}
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// Play next track
export async function playNextTrack(arn: AnimeNotifier) {
// Get random track
let response = await fetch("/api/next/soundtrack")
let track = await response.json()
playAudioFile(arn, track.id, "https://notify.moe/audio/" + track.file)
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arn.statusMessage.showInfo("Now playing: " + track.title)
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return track
}
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// Set volume
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export function setVolume(arn: AnimeNotifier, element: HTMLInputElement) {
volume = parseFloat(element.value) / 100.0
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if(gainNode) {
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gainNode.gain.setTargetAtTime(volume, audioContext.currentTime + volumeSmoothingDelay, volumeTimeConstant)
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}
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}
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// Pause audio
export function pauseAudio(arn: AnimeNotifier, button: HTMLButtonElement) {
if(!audioNode) {
return
}
audioNode.playbackRate.setValueAtTime(0.0, 0)
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audioPlayerPlay.classList.remove("fade-out")
audioPlayerPause.classList.add("fade-out")
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}
// Resume audio
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export function resumeAudio(arn: AnimeNotifier, button: HTMLButtonElement) {
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if(!audioNode) {
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playNextTrack(arn)
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return
}
audioNode.playbackRate.setValueAtTime(1.0, 0)
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audioPlayerPlay.classList.add("fade-out")
audioPlayerPause.classList.remove("fade-out")
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}