2019-10-15 09:22:08 +02:00
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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2019-10-20 19:25:13 +02:00
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<meta name="viewport" content="width=device-width, initial-scale=1">
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2019-10-15 09:22:08 +02:00
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<title>Facebook Events to iCal Converter</title>
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2019-10-20 19:25:13 +02:00
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<style>
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#current-download {
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display: none;
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}
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#list {}
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.row {
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display: flex;
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align-items: center;
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flex-wrap: wrap;
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}
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input#url {
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flex: 1;
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}
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#form {
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flex: 1;
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display: flex;
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min-width: 300px;
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}
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#status {
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flex: 1;
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height: 1rem;
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}
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.status-item {
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display: none;
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min-width: 200px;
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}
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.show {
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display: block;
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}
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.hidden {
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display: none;
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}
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</style>
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2019-10-15 09:22:08 +02:00
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</head>
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<body>
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2019-10-20 19:25:13 +02:00
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<a id="current-download" href="javascript:void(0)"></a>
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2019-10-15 09:22:08 +02:00
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<h1>Facebook Events to iCal Converter</h1>
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<p>
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Insert Facebook event URL into the form. When you submit it
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you will get <a href="https://en.wikipedia.org/wiki/ICalendar"><code>ics</code></a>
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file that you can import
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into your calendar.
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</p>
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2019-10-20 19:25:13 +02:00
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<div class="row">
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<form action='/download' method='POST' id="form">
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<input id="url" type='text' name='url' placeholder='Paste / type FB event URL here...' />
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<input id="submit" type='submit' value='Submit' />
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</form>
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<div id="status">
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<div class="status-item" id="network">
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Fetching file...
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</div>
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<div class="status-item" id="parsing">
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Parsing data...
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</div>
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<div class="status-item" id="error">
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</div>
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</div>
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</div>
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<br />
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<label for="nojs">
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<input id="nojs" type="checkbox" />
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No JavaScript
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</label>
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<br />
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<br />
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<table id="list" class="hidden">
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<thead>
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<tr>
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<td>#</td>
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<td>Link</td>
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<td>Created at</td>
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</tr>
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</thead>
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<tbody>
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</tbody>
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</table>
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<script>
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(() => {
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const noJS = () => {
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return Boolean(document.querySelector("#nojs").checked)
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}
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const useStorage = Boolean(window.localStorage)
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if (!window.fetch || !window.Promise || !window.URLSearchParams) {
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console.info('JS features not available.')
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return
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}
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const getStorage = () => {
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const storage = localStorage.getItem('fb-to-ical-events')
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if (!storage) {
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localStorage.setItem('fb-to-ical-events', JSON.stringify([]))
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return "[]"
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}
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return storage
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}
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const getStorageContents = (storage) => {
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return JSON.parse(storage)
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}
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const updateStorage = (storageContents) => {
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const encodedStorage = JSON.stringify(storageContents)
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localStorage.setItem('fb-to-ical-events', encodedStorage)
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}
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const saveRecord = (order, link, createdAt, title) => {
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if (!useStorage) {
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return
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}
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const storage = getStorage()
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const storageContents = getStorageContents(storage)
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const record = {
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order,
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link,
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createdAt: createdAt.toString(),
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title,
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}
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updateStorage([ ...storageContents, record ])
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}
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const showTable = () => {
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list.classList.remove('hidden')
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}
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const insertTableRow = ({ order, link, createdAt, title }) => {
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showTable()
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const row = document.createElement('tr')
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const orderCol = document.createElement('td')
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orderCol.innerText = order
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const linkElement = document.createElement('a')
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linkElement.setAttribute('href', link)
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linkElement.innerText = 'Download'
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const linkCol = document.createElement('td')
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linkCol.appendChild(linkElement)
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const createdAtCol = document.createElement('td')
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const parsedCreatedAt = new Date(createdAt)
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createdAtCol.innerText = (parsedCreatedAt || new Date()).toLocaleString()
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const titleCol = document.createElement('td')
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titleCol.innerText = title
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const newRow = document.createElement('tr')
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newRow.appendChild(orderCol)
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newRow.appendChild(linkCol)
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newRow.appendChild(createdAtCol)
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newRow.appendChild(titleCol)
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tableBody.appendChild(newRow)
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}
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const createRecord = (uri, summary) => {
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const order = tableBody.querySelectorAll('tr').length + 1
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const createdAt = new Date()
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saveRecord(order, uri, createdAt, summary)
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insertTableRow({
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order,
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link: uri,
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createdAt,
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title: summary,
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})
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}
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const hydrateList = () => {
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if (!useStorage) {
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return
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}
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const storage = getStorage()
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const storageContents = getStorageContents(storage)
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if (storageContents.length > 0) {
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showTable()
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}
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storageContents
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.sort((a, b) => {
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if (a.order < b.order) {
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return -1
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}
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if (a.order > b.order) {
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return 1
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}
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return 0
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})
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.forEach((record) => {
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insertTableRow(record)
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})
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}
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const clearStatuses = () => {
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document.querySelectorAll('.status-item').forEach((item) => {
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item.classList.remove('show')
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})
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}
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const setStatusDownloading = () => {
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clearStatuses()
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document.querySelector('#network').classList.add('show')
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}
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const setStatusParsing = () => {
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clearStatuses()
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document.querySelector('#parsing').classList.add('show')
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}
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const setStatusError = (err) => {
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clearStatuses()
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const error = document.querySelector('#error')
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error.innerText = err.toString()
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error.classList.add('show')
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}
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const pendingRequest = () => {
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input.disabled = true
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submitButton.disabled = true
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setStatusDownloading()
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}
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const finishedRequest = () => {
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input.disabled = false
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submitButton.disabled = false
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clearStatuses()
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}
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const handleError = (error) => {
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console.error(error)
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finishedRequest()
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setStatusError(error)
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}
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const postURL = (data) => {
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return new Promise((resolve, reject) => {
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fetch('/download', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded',
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},
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body: data,
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}).then((response) => {
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if (response.status === 500) {
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reject(response.statusText)
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return
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}
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finishedRequest()
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resolve(response)
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}).catch(reject)
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})
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}
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const form = document.querySelector('form')
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const submitButton = document.querySelector("#submit")
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const input = document.querySelector("#url")
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const link = document.querySelector("#current-download")
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const table = document.querySelector('#list')
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const tableBody = table.querySelector('tbody')
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hydrateList()
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submitButton.addEventListener('click', (event) => {
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if (noJS()) {
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return
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}
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event.preventDefault()
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const formData = new URLSearchParams()
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formData.set('url', input.value)
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pendingRequest()
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postURL(formData)
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.then((res) => {
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res.text()
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.then((text) => {
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setStatusParsing()
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const dataUri = encodeURIComponent(text)
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const uri = `data:text/calendar;charset=utf-8,${dataUri}`
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link.setAttribute('href', uri)
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link.setAttribute('download', 'download.ics')
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link.click()
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input.value = ''
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const summaryMatch = text.match(/SUMMARY:.*/)[0]
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const summary = summaryMatch ? summaryMatch.replace(/SUMMARY:/, '') : ''
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createRecord(uri, summary)
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clearStatuses()
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})
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.catch((err) => {
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handleError(err)
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})
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})
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.catch((err) => {
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handleError(err)
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})
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})
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})()
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</script>
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2019-10-15 09:22:08 +02:00
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</body>
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</html>
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