const launchSaveModal = (enableModal, disableModal) =>
Task((rej, res) => {
const onCancel = () => {
disableModal()
rej()
}
const onSave = (description) => {
disableModal()
res(description)
}
const content = (
<SaveModal
onCancel={ onCancel }
onSave={ onSave }
/>
)
enableModal({ content, isCloseable: true, title: 'Save Preset' })
})
const getBufferFromInstrument = curry((context, instrument) => {
const newInstrument = { ...instrument }
const enabledSounds = newInstrument.sounds
.filter(sound => sound.amount)
newInstrument.buffers = {}
return Task((rej, res) => {
const onComplete = (buffer, sound, sounds) => {
newInstrument.buffers[sound.id] = buffer
bufferCount += 1
if (bufferCount === sounds.length) {
res(newInstrument)
}
}
let bufferCount = 0
enabledSounds.forEach((sound, i, sounds) =>
getBufferFromURL(context, sound.path)
.fork(rej, buffer => onComplete(buffer, sound, sounds)))
})
})
const getBufferFromAudioTemplate = (audioTemplate, timeLength) => {
const offlineCtx = new OfflineAudioContext(2, 44100 * timeLength, 44100)
audioTemplate.forEach(({
buffer,
startTime,
duration,
volume,
pitchAmount,
fadeInDuration,
fadeOutDuration,
}) => {
playSound(offlineCtx, buffer, startTime, duration, volume, pitchAmount, fadeInDuration, fadeOutDuration)
})
return Task((rej, res) => {
offlineCtx.oncomplete = ev => res(ev.renderedBuffer)
offlineCtx.onerror = () => rej(Error('Failed rendering buffer'))
offlineCtx.startRendering()
})
}
const getBufferFromURL = curry((context, url) =>
Task((rej, res) => {
if (bufferCache[url]) return res(bufferCache[url])
const onError = () => rej(Error(`Error decoding file data: ${url}`))
const request = new XMLHttpRequest()
request.open('GET', url, true)
request.responseType = 'arraybuffer'
request.onload = () =>
context.decodeAudioData(
request.response,
(buffer) => {
if (!buffer) {
onError()
return
}
bufferCache[url] = buffer
res(buffer)
},
onError
)
request.onerror = onError
request.send()
}))
const promiseToTask = p => Task((rej, res) => p().then(res).catch(rej))
const getRandomPost = posts => Future((reject, resolve) => resolve(findByIndex(getRandomIndex(posts), posts)));
IO.of(map(connection => curry((name, time) => Future((reject, resolve) => {
connection.get_subreddit(name).get_top({ time })
.then(resolve)
.then(reject);
})),