154 lines
3.6 KiB
TypeScript

import { AnimeNotifier } from "../AnimeNotifier"
var audioContext: AudioContext
var audioNode: AudioBufferSourceNode
var gainNode: GainNode
var volume = 0.5
var playId = 0
var audioPlayer = document.getElementById("audio-player")
var audioPlayerPlay = document.getElementById("audio-player-play")
var audioPlayerPause = document.getElementById("audio-player-pause")
// Play audio
export function playAudio(arn: AnimeNotifier, element: HTMLElement) {
playAudioFile(arn, element.dataset.soundtrackId, element.dataset.audioSrc)
}
// Play audio file
function playAudioFile(arn: AnimeNotifier, trackId: string, trackUrl: string) {
if(!audioContext) {
audioContext = new AudioContext()
gainNode = audioContext.createGain()
gainNode.gain.value = volume
}
playId++
let currentPlayId = playId
// Stop current track
stopAudio(arn)
arn.currentSoundTrackId = trackId
arn.markPlayingSoundTrack()
// Request
let request = new XMLHttpRequest()
request.open("GET", trackUrl, true)
request.responseType = "arraybuffer"
request.onload = () => {
if(currentPlayId !== playId) {
return
}
audioContext.decodeAudioData(request.response, buffer => {
if(currentPlayId !== playId) {
return
}
audioNode = audioContext.createBufferSource()
audioNode.buffer = buffer
audioNode.connect(gainNode)
gainNode.connect(audioContext.destination)
audioNode.start(0)
audioNode.onended = (event: MediaStreamErrorEvent) => {
if(currentPlayId !== playId) {
return
}
playNextTrack(arn)
// stopAudio(arn)
}
}, console.error)
}
request.send()
// Show audio player
audioPlayer.classList.remove("fade-out")
audioPlayerPlay.classList.add("fade-out")
audioPlayerPause.classList.remove("fade-out")
}
// 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")
if(gainNode) {
gainNode.disconnect()
}
if(audioNode) {
audioNode.stop()
audioNode.disconnect()
audioNode = null
}
}
// Toggle audio
export function toggleAudio(arn: AnimeNotifier, element: HTMLElement) {
// 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) {
stopAudio(arn)
} else {
playAudio(arn, element)
}
}
// 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)
return track
}
// Set volume
export function setVolume(arn: AnimeNotifier, element: HTMLInputElement) {
volume = parseFloat(element.value) / 100.0
if(gainNode) {
gainNode.gain.value = volume
}
}
// Pause audio
export function pauseAudio(arn: AnimeNotifier, button: HTMLButtonElement) {
if(!audioNode) {
return
}
audioNode.playbackRate.setValueAtTime(0.0, 0)
audioPlayerPlay.classList.remove("fade-out")
audioPlayerPause.classList.add("fade-out")
}
// Resume audio
export async function resumeAudio(arn: AnimeNotifier, button: HTMLButtonElement) {
if(!audioNode) {
let track = await playNextTrack(arn)
arn.statusMessage.showInfo("Now playing: " + track.title)
return
}
audioNode.playbackRate.setValueAtTime(1.0, 0)
audioPlayerPlay.classList.add("fade-out")
audioPlayerPause.classList.remove("fade-out")
}