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import Nexus from 'nexusui'
// import Tone from 'tone'
// import StartAudioContext from './startAudioContext'
const isIphone = (navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i))
const isIpad = (navigator.userAgent.match(/iPad/i))
const isAndroid = (navigator.userAgent.match(/Android/i))
const isMobile = isIphone || isIpad || isAndroid
const isDesktop = ! isMobile
document.body.classList.add(isMobile ? 'mobile' : 'desktop')
const browser = { isIphone, isIpad, isMobile, isDesktop }
function choice (a){ return a[ Math.floor(Math.random() * a.length) ] }
function randint (n) { return Math.floor(Math.random() * n) }
function mod(n,m){ return n-(m * Math.floor(n/m)) }
function norm(n, min, max){ return (n - min) / (max - min) }
function shuffle(a){
a = a.slice(0)
for (var i = a.length; i > 0; i--){
var r = randint(i)
var swap = a[i-1]
a[i-1] = a[r]
a[r] = swap
}
return a
}
function shuffleInPlace(a){
for (var i = a.length; i > 0; i--){
var r = randint(i)
var swap = a[i-1]
a[i-1] = a[r]
a[r] = swap
}
return a
}
function requestAudioContext (fn) {
if (isMobile) {
const container = document.createElement('div')
const button = document.createElement('div')
button.innerHTML = 'Tap to start - please unmute your phone'
Object.assign(container.style, {
position: 'absolute',
width: '100%',
height: '100%',
zIndex: '10000',
top: '0px',
left: '0px',
backgroundColor: 'rgba(0, 0, 0, 0.8)',
})
Object.assign(button.style, {
position: 'absolute',
left: '50%',
top: '50%',
padding: '20px',
backgroundColor: '#7F33ED',
color: 'white',
fontFamily: 'monospace',
borderRadius: '3px',
transform: 'translate3D(-50%,-50%,0)',
textAlign: 'center',
lineHeight: '1.5',
})
container.appendChild(button)
document.body.appendChild(container)
StartAudioContext.setContext(Tone.context)
StartAudioContext.on(button)
StartAudioContext.onStarted(_ => {
container.remove()
fn()
})
} else {
fn()
}
}
function dataURItoBlob(dataURI) {
// convert base64 to raw binary data held in a string
// doesn't handle URLEncoded DataURIs - see SO answer #6850276 for code that does this
var byteString = atob(dataURI.split(',')[1]);
// separate out the mime component
var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0]
// write the bytes of the string to an ArrayBuffer
var ab = new ArrayBuffer(byteString.length);
// create a view into the buffer
var ia = new Uint8Array(ab);
// set the bytes of the buffer to the correct values
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
// write the ArrayBuffer to a blob, and you're done
var blob = new Blob([ab], {type: mimeString});
return blob;
}
function ftom(f) {
// return (Math.log(f) - Math.log(261.626)) / Math.log(2) + 4.0
return 69 + 12 * Math.log2(f / 440)
}
function mtof(m) {
return 440 * Math.pow(2, (m - 69) / 12)
}
function tap (fn) {
return (e) => {
if (browser.isMobile) fn()
else if (e.press) fn()
}
}
function update_value_on_change(el, id, is_int, fn) {
const label = document.querySelector(id + ' + .val')
const update = v => {
label.innerHTML = is_int ? parseInt(v) : v.toFixed(2)
fn && fn(v)
}
el.on('change', update)
label.innerHTML = is_int ? parseInt(el.value) : el.value.toFixed(2)
el.update = update
}
function update_radio_value_on_change(el, id, values, fn) {
let old_v = el.active
const label = document.querySelector(id + ' + .val')
const update = v => {
if (v === -1) {
v = el.active = old_v
} else {
old_v = v
}
label.innerHTML = values[v][1]
fn && fn(v)
}
el.on('change', update)
update(el.active)
el.update = update
}
function build_options(el, lists, fn) {
Object.keys(lists).forEach(key => {
const list = lists[key]
const option = document.createElement('option')
option.innerHTML = list.name
option.value = key
el.appendChild(option)
})
el.addEventListener('input', function(e){
fn(e.target.value)
})
}
function Slider(parent, tag, title, options, is_int, fn){
const block = document.createElement('div')
block.classList.add('block')
const el = document.createElement('div')
el.setAttribute('id', tag)
const val = document.createElement('span')
val.classList.add('val')
const label = document.createElement('label')
label.innerHTML = title
block.appendChild(label)
block.appendChild(el)
block.appendChild(val)
parent.appendChild(block)
options.size = [200, 24]
const nx = new Nexus.Slider('#' + tag, options)
update_value_on_change(nx, '#' + tag, is_int, fn)
return nx
}
function Statistic(parent, label, fn){
const block = document.createElement('div')
block.classList.add('stat')
const key = document.createElement('div')
key.classList.add('key')
const val = document.createElement('div')
val.classList.add('val')
block.appendChild(key)
block.appendChild(val)
parent.appendChild(block)
key.innerHTML = label
val.innerHTML = fn()
let old_v
return () => {
const v = fn()
if (old_v === v) return
val.innerText = old_v = v
}
}
export {
mod, norm, choice, shuffle, randint,
browser, requestAudioContext, ftom, mtof, tap, dataURItoBlob,
update_value_on_change, update_radio_value_on_change, build_options,
Slider, Statistic,
}
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