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// common variables
let iBytesImported = 0
let iBytesTotal = 0
let iPreviousBytesLoaded = 0
let iMaxFilesize = 104857600 // 100MB
let timer = 0
let importInProgress = 'n/a'
let isProcessing = false
let url = null
/* CACHED ELEMENTS */
const importForm = document.getElementById('import-form')
const importInput = document.getElementById('import-input')
const importMessageLabel = document.getElementById('import-message')
const importButtonWrapper = document.getElementById('import-button-wrapper')
const importButton = document.getElementById('import-button')
const importProgressContainer = document.getElementById('import-progress-container')
const importProgressBar = document.getElementById('import-progress')
const importProgressLabel = document.getElementById('import-progress-label')
const importStopped = document.getElementById('import-stopped')
const importStarted = document.getElementById('import-started')
/* HELPERS */
const setProgress = (_progress) => {
importProgressContainer.style.display = _progress > 0 ? 'flex' : 'none'
importProgressBar.style.width = `${_progress}%`
importProgressLabel.innerText = _progress >= 15 ? `${_progress}%` : ''
}
const setMessage = (_message, isError) => {
importMessageLabel.style.display = _message ? 'block' : 'none'
importMessageLabel.innerHTML = _message
if (isError) {
importMessageLabel.classList.add('error')
} else {
importMessageLabel.classList.remove('error')
}
}
const setImportState = (_importInProgress) => {
importInProgress = _importInProgress
importStarted.style.display = _importInProgress ? 'inline-block' : 'none'
importStopped.style.display = _importInProgress ? 'none' : 'block'
if (_importInProgress) {
importButton.classList.add('transparent')
timer = setInterval(doInnerUpdates, 300)
} else {
importButton.classList.remove('transparent')
clearInterval(timer)
}
}
const secondsToTime = (secs) => {
let hr = Math.floor(secs / 3600)
let min = Math.floor((secs - (hr * 3600)) / 60)
let sec = Math.floor(secs - (hr * 3600) - (min * 60))
if (hr < 10) hr = `0${hr}`
if (min < 10) min = `0${min}`
if (sec < 10) sec = `0${sec}`
if (hr) hr = '00'
return `${hr}:${min}:${sec}`
}
const bytesToSize = (bytes) => {
const sizes = ['Bytes', 'KB', 'MB']
if (bytes == 0) return 'n/a'
const i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)))
return (bytes / Math.pow(1024, i)).toFixed(1) + ' ' + sizes[i]
}
const determineDragAndDropCapable = () => {
const div = document.createElement('div')
return (('draggable' in div)
|| ('ondragstart' in div && 'ondrop' in div))
&& 'FormData' in window
&& 'FileReader' in window
}
/* MAIN */
document.addEventListener('DOMContentLoaded', () => {
['drag', 'dragstart', 'dragend', 'dragover', 'dragenter', 'dragleave']
.forEach((evt) => {
importForm.addEventListener(evt, (e) => {
e.preventDefault()
e.stopPropagation()
})
})
}, false)
const labelClicked = (e) => {
if (importInProgress === true) {
e.preventDefault()
return false
}
}
const urlSelected = (_url) => {
url = _url || importInput.value
setMessage('')
setProgress(0)
importButtonWrapper.style.display = 'block'
setImportState(false)
}
const startImporting = () => {
if (importInProgress === true) return
if (!url) return
isProcessing = false
iPreviousBytesLoaded = 0
setMessage('')
setProgress(0)
setImportState(true)
const formData = new FormData()
formData.append('url', url)
const xhr = new XMLHttpRequest()
xhr.upload.addEventListener('progress', importProgress, false)
xhr.addEventListener('load', importFinish, false)
xhr.addEventListener('error', importError, false)
xhr.addEventListener('abort', importAbort, false)
xhr.open('POST', '/import')
xhr.send(formData)
timer = setInterval(doInnerUpdates, 300)
}
const doInnerUpdates = () => { // we will use this function to display import speed
if (isProcessing) {
clearInterval(timer)
return
}
let iDiff = iBytesImported - iPreviousBytesLoaded
// if nothing new loaded - exit
if (iDiff == 0)
return
iPreviousBytesLoaded = iBytesImported
iDiff = iDiff * 2
const iBytesRem = iBytesTotal - iPreviousBytesLoaded
const secondsRemaining = iBytesRem / iDiff
// update speed info
let iSpeed = iDiff.toString() + 'B/s'
if (iDiff > 1024 * 1024) {
iSpeed = (Math.round(iDiff * 100/(1024*1024))/100).toString() + 'MB/s'
} else if (iDiff > 1024) {
iSpeed = (Math.round(iDiff * 100/1024)/100).toString() + 'KB/s'
}
const speedMessage = `${iSpeed} | ${secondsToTime(secondsRemaining)}`
setMessage(speedMessage)
}
function importProgress(e) { // import process in progress
if (e.lengthComputable) {
iBytesImported = e.loaded
iBytesTotal = e.total
const iPercentComplete = Math.round(iBytesImported / iBytesTotal * 100)
setProgress(iPercentComplete)
if (iPercentComplete === 100) {
isProcessing = true
setMessage('Processing video... please wait')
}
} else {
setMessage('Unable to compute progress.')
}
}
const importFinish = (e) => { // import successfully finished
const message = e.target.responseText
const isSuccess = e.target.status < 400
setProgress(isSuccess ? 100 : 0)
setMessage(message, !isSuccess)
setImportState(false)
if (isSuccess) removeFile(null, true)
}
const importError = () => { // import error
setMessage('An error occurred while importing the url.', true)
setProgress(0)
setImportState(false)
}
const importAbort = () => { // import abort
setMessage('The import has been canceled by the user or the browser dropped the connection.', true)
setProgress(0)
setImportState(false)
}
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