Mobilizon/Facebook-Events-iCal-Converter
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Code Issues Releases Wiki Activity

add javasript options for downloading files, add basic listing when using JS

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This commit is contained in:
Ondrej Synacek
2019-10-20 19:25:13 +02:00
parent 4297d5aa64
commit 0585203dde
3 changed files with 337 additions and 10 deletions
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19
lib/index.js
View File

@ -18,14 +18,23 @@ app.get('/', (req, res) => {
res.render('index') res.render('index')
}) })
app.get('*', (req, res) => {
res.status(400).render('404')
})
app.get('/error', (req, res) => { app.get('/error', (req, res) => {
const error = req.error || req.query.error || ''
res res
.status(500) .status(500)
.render('error', { error: req.error || '' }) .render('error', { error })
})
app.get('/download', (req, res) => {
res
.status(200)
.render('download')
})
// NOTE: Capture all unkown URLs
app.get('*', (req, res) => {
res.status(400).render('404')
}) })
app.use('/download', checkFBURL) app.use('/download', checkFBURL)

2
lib/views/error.ejs
View File

@ -9,7 +9,7 @@
<h2>Error</h2> <h2>Error</h2>
<p> <p>
There was an error parsing the URL: An error occured!
<%= error || '' %> <%= error || '' %>
</p> </p>

326
lib/views/index.ejs
View File

@ -2,10 +2,53 @@
<html lang="en"> <html lang="en">
<head> <head>
<meta charset="utf-8" /> <meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Facebook Events to iCal Converter</title> <title>Facebook Events to iCal Converter</title>
<style>
#current-download {
display: none;
}
#list {}
.row {
display: flex;
align-items: center;
flex-wrap: wrap;
}
input#url {
flex: 1;
}
#form {
flex: 1;
display: flex;
min-width: 300px;
}
#status {
flex: 1;
height: 1rem;
}
.status-item {
display: none;
min-width: 200px;
}
.show {
display: block;
}
.hidden {
display: none;
}
</style>
</head> </head>
<body> <body>
<a id="current-download" href="javascript:void(0)"></a>
<h1>Facebook Events to iCal Converter</h1> <h1>Facebook Events to iCal Converter</h1>
<p> <p>
@ -15,9 +58,284 @@
into your calendar. into your calendar.
</p> </p>
<form action='/download' method='POST'> <div class="row">
<input type='text' name='url' placeholder='Paste / type FB event URL here...' /> <form action='/download' method='POST' id="form">
<input type='submit' value='Submit' /> <input id="url" type='text' name='url' placeholder='Paste / type FB event URL here...' />
</form> <input id="submit" type='submit' value='Submit' />
</form>
<div id="status">
<div class="status-item" id="network">
Fetching file...
</div>
<div class="status-item" id="parsing">
Parsing data...
</div>
<div class="status-item" id="error">
</div>
</div>
</div>
<br />
<label for="nojs">
<input id="nojs" type="checkbox" />
No JavaScript
</label>
<br />
<br />
<table id="list" class="hidden">
<thead>
<tr>
<td>#</td>
<td>Link</td>
<td>Created at</td>
</tr>
</thead>
<tbody>
</tbody>
</table>
<script>
(() => {
const noJS = () => {
return Boolean(document.querySelector("#nojs").checked)
}
const useStorage = Boolean(window.localStorage)
if (!window.fetch || !window.Promise || !window.URLSearchParams) {
console.info('JS features not available.')
return
}
const getStorage = () => {
const storage = localStorage.getItem('fb-to-ical-events')
if (!storage) {
localStorage.setItem('fb-to-ical-events', JSON.stringify([]))
return "[]"
}
return storage
}
const getStorageContents = (storage) => {
return JSON.parse(storage)
}
const updateStorage = (storageContents) => {
const encodedStorage = JSON.stringify(storageContents)
localStorage.setItem('fb-to-ical-events', encodedStorage)
}
const saveRecord = (order, link, createdAt, title) => {
if (!useStorage) {
return
}
const storage = getStorage()
const storageContents = getStorageContents(storage)
const record = {
order,
link,
createdAt: createdAt.toString(),
title,
}
updateStorage([ ...storageContents, record ])
}
const showTable = () => {
list.classList.remove('hidden')
}
const insertTableRow = ({ order, link, createdAt, title }) => {
showTable()
const row = document.createElement('tr')
const orderCol = document.createElement('td')
orderCol.innerText = order
const linkElement = document.createElement('a')
linkElement.setAttribute('href', link)
linkElement.innerText = 'Download'
const linkCol = document.createElement('td')
linkCol.appendChild(linkElement)
const createdAtCol = document.createElement('td')
const parsedCreatedAt = new Date(createdAt)
createdAtCol.innerText = (parsedCreatedAt || new Date()).toLocaleString()
const titleCol = document.createElement('td')
titleCol.innerText = title
const newRow = document.createElement('tr')
newRow.appendChild(orderCol)
newRow.appendChild(linkCol)
newRow.appendChild(createdAtCol)
newRow.appendChild(titleCol)
tableBody.appendChild(newRow)
}
const createRecord = (uri, summary) => {
const order = tableBody.querySelectorAll('tr').length + 1
const createdAt = new Date()
saveRecord(order, uri, createdAt, summary)
insertTableRow({
order,
link: uri,
createdAt,
title: summary,
})
}
const hydrateList = () => {
if (!useStorage) {
return
}
const storage = getStorage()
const storageContents = getStorageContents(storage)
if (storageContents.length > 0) {
showTable()
}
storageContents
.sort((a, b) => {
if (a.order < b.order) {
return -1
}
if (a.order > b.order) {
return 1
}
return 0
})
.forEach((record) => {
insertTableRow(record)
})
}
const clearStatuses = () => {
document.querySelectorAll('.status-item').forEach((item) => {
item.classList.remove('show')
})
}
const setStatusDownloading = () => {
clearStatuses()
document.querySelector('#network').classList.add('show')
}
const setStatusParsing = () => {
clearStatuses()
document.querySelector('#parsing').classList.add('show')
}
const setStatusError = (err) => {
clearStatuses()
const error = document.querySelector('#error')
error.innerText = err.toString()
error.classList.add('show')
}
const pendingRequest = () => {
input.disabled = true
submitButton.disabled = true
setStatusDownloading()
}
const finishedRequest = () => {
input.disabled = false
submitButton.disabled = false
clearStatuses()
}
const handleError = (error) => {
console.error(error)
finishedRequest()
setStatusError(error)
}
const postURL = (data) => {
return new Promise((resolve, reject) => {
fetch('/download', {
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
body: data,
}).then((response) => {
if (response.status === 500) {
reject(response.statusText)
return
}
finishedRequest()
resolve(response)
}).catch(reject)
})
}
const form = document.querySelector('form')
const submitButton = document.querySelector("#submit")
const input = document.querySelector("#url")
const link = document.querySelector("#current-download")
const table = document.querySelector('#list')
const tableBody = table.querySelector('tbody')
hydrateList()
submitButton.addEventListener('click', (event) => {
if (noJS()) {
return
}
event.preventDefault()
const formData = new URLSearchParams()
formData.set('url', input.value)
pendingRequest()
postURL(formData)
.then((res) => {
res.text()
.then((text) => {
setStatusParsing()
const dataUri = encodeURIComponent(text)
const uri = `data:text/calendar;charset=utf-8,${dataUri}`
link.setAttribute('href', uri)
link.setAttribute('download', 'download.ics')
link.click()
input.value = ''
const summaryMatch = text.match(/SUMMARY:.*/)[0]
const summary = summaryMatch ? summaryMatch.replace(/SUMMARY:/, '') : ''
createRecord(uri, summary)
clearStatuses()
})
.catch((err) => {
handleError(err)
})
})
.catch((err) => {
handleError(err)
})
})
})()
</script>
</body> </body>
</html> </html>