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var audio = (function(){
var audio = {}
var el, music = [], current_index = -1
var links, comment, parent
var playing = false
audio.init = function () {
links = document.querySelectorAll("a")
comment = document.querySelector("#comment")
parent = document.querySelector("#audio")
Array.prototype.slice.apply(links).forEach(function(url){
if (! url.href.match(/(mp3|wav|ogg)/)) return
url.dataset.index = music.length
music.push(url)
})
audio.build()
}
audio.build = function () {
el = document.createElement("audio")
el.setAttribute("controls", true)
el.addEventListener("loadeddata", () => { if (playing) el.play() })
el.addEventListener("ended", audio.next)
el.src = music[0]
parent.appendChild(el)
document.body.addEventListener("keydown", audio.keydown)
}
audio.destroy = function () {
el.pause()
el = null
parent.removeChild(el)
document.body.removeEventListener("keydown", audio.keydown)
}
audio.play = function (index) {
current_index = (parseInt(index) + music.length) % music.length
el.src = music[current_index].href
playing = document.querySelector(".playing")
if (playing) playing.classList.remove("playing")
music[current_index].classList.add("playing")
}
audio.prev = function (){
audio.play(current_index - 1)
}
audio.next = function (){
audio.play(current_index + 1)
}
audio.toggle = function (){
if (el.paused) el.play()
else el.pause()
}
audio.keydown = function(e){
if (app.typing || e.ctrlKey || e.altKey || e.metaKey || e.shiftKey) return
switch (e.keyCode) {
case 37: // left
audio.prev()
break;
case 39: // right
audio.next()
break;
case 32: // spacebar
e.preventDefault()
audio.toggle()
break;
}
}
return audio
})()
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