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import React, { Component } from 'react'
import { connect } from 'react-redux'
import extractPeaks from 'webaudio-peaks'
import actions from 'app/actions'
import { formatSize, timestampHMS } from 'app/utils'
import { Loader } from 'app/common'
class WaveUpload extends Component {
state = {
working: false,
status: "",
filename: "",
duration: 0,
}
upload(e) {
e.preventDefault()
document.body.className = ''
const files = e.dataTransfer ? e.dataTransfer.files : e.target.files
let i
let file
for (i = 0; i < files.length; i++) {
file = files[i]
if (file && file.type.match('image.*')) break
}
if (!file) {
console.log('No file specified')
return
}
this.setState({ working: true, status: "Loading MP3...", filename: file.name, size: file.size, duration: 0 })
const fileReader = new FileReader()
fileReader.onload = event => {
fileReader.onload = null
this.processAudioFile(file, event.target.result)
}
fileReader.readAsArrayBuffer(file)
}
processAudioFile(audioFile, arrayBuffer) {
this.setState({ working: true, status: "Extracting peaks..." })
var audioContext = new (window.AudioContext || window.webkitAudioContext)();
audioContext.decodeAudioData(arrayBuffer, (audioBuffer) => {
// buffer, samplesPerPixel, isMono, startOffset, endOffset, bitResolution
this.setState({ duration: audioBuffer.duration })
var peaks = extractPeaks(audioBuffer, 441, true);
console.log(peaks)
const array = Array.from(peaks.data[0])
const peaksBlob = new Blob([ JSON.stringify(array) ], {type: "application/json"});
this.uploadAudioAndPeaks(audioFile, peaksBlob)
})
}
uploadAudioAndPeaks(audioFile, peaksBlob) {
const { episode } = this.props
const updatedEpisode = { ...episode }
this.setState({ status: "Removing old files..." })
this.destroyTaggedFile('peaks')
this.destroyTaggedFile('audio')
.then(() => {
return this.uploadTaggedFile(peaksBlob, 'peaks', 'episode-' + this.props.episode.id + '-peaks.json')
})
.then(peaksResult => {
updatedEpisode.settings.peaks = peaksResult
return this.uploadTaggedFile(audioFile, 'audio', this.state.filename)
})
.then(audioResult => {
updatedEpisode.settings.audio = audioResult
return actions.episode.update(updatedEpisode)
})
.then(res => {
this.setState({ status: "Upload complete", working: false })
})
}
uploadTaggedFile(file, tag, fn) {
return new Promise((resolve, reject) => {
this.setState({ status: "Uploading " + tag + "..." })
const uploadData = {
tag,
file,
__file_filename: fn,
username: this.props.currentUser.username,
}
console.log(uploadData)
return actions.upload.upload(uploadData).then(data => {
console.log(data)
resolve(data.res)
})
})
}
destroyTaggedFile(tag) {
return new Promise((resolve, reject) => {
if (!this.props.episode.settings[tag]) {
return resolve();
}
actions.upload.destroy(this.props.episode.settings[tag])
.then(() => {
console.log('Destroy successful')
resolve()
})
.catch(() => {
console.log('Error deleting the image')
reject()
})
})
}
render() {
const { episode, peaks } = this.props
return (
<div className="sidebar-content wave-upload">
{peaks.length && (
<div>
Peaks: {peaks.length}
</div>
)}
<div className="uploadButton">
<button>
<span>
{episode.settings.audio
? "Upload a new audio file"
: "Upload an audio file"
}
</span>
</button>
<input
type="file"
accept="audio/mp3"
onChange={this.upload.bind(this)}
required={this.props.required}
/>
</div>
<small>Upload an MP3, encoded 192kbit constant bitrate, 44.1kHz stereo</small>
{this.state.status && (
<div className='status'>
{this.state.working && <Loader />}
<div className='status-message'>{this.state.status}</div>
{this.state.filename && <small>{this.state.filename}</small>}
{this.state.size && <small>{'Size: '}{formatSize(this.state.size)}</small>}
{!!this.state.duration && <small>{'Duration: '}{timestampHMS(this.state.duration)}</small>}
</div>
)}
</div>
)
}
}
const mapStateToProps = state => ({
peaks: state.align.peaks,
currentUser: state.auth.user,
project: state.site.project,
episode: state.site.episode,
})
export default connect(mapStateToProps)(WaveUpload)
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