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Add Event to Google Calendar on GoOut.net #userscript
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// ==UserScript== | |
// @id gooutcalendar@jnv.github.io | |
// @name GoOut: Add Event to Google Calendar | |
// @description Displays Calendar button to easily add events to Google Calendar | |
// @namespace https://jnv.github.io | |
// @domain goout.net | |
// @include https://goout.net/* | |
// @version 2018.11.28 | |
// @grant none | |
// @run-at document-idle | |
// @screenshot https://gist.github.com/jnv/b1891f33fb7b6f6d03dd435ba7dc3266/raw/screenshot.png | |
// @license CC0 1.0; https://creativecommons.org/publicdomain/zero/1.0/ | |
// ==/UserScript== | |
'use strict' | |
const SEL = { | |
parent: '[itemtype="http://schema.org/Event"]', | |
name: '[itemprop=name]', | |
description: '[itemprop=description]', | |
venue: '[itemprop=location] [itemprop=name]', | |
address: '[itemprop=address]', | |
streetAddress: '[itemprop=streetAddress]', | |
addressLocality: '[itemprop=addressLocality]', | |
linkContainer: '#itemEvent .functionButtons', | |
startDate: '[itemprop=startDate]', | |
endDate: '[itemprop=endDate]', | |
} | |
const LINK_EL = document.createElement('a') | |
const FALLBACK_END_TIME = '23:59:00' | |
function debounce(func, wait, immediate) { | |
var timeout; | |
return function() { | |
var context = this, args = arguments; | |
clearTimeout(timeout); | |
timeout = setTimeout(function() { | |
timeout = null; | |
if (!immediate) func.apply(context, args); | |
}, wait); | |
if (immediate && !timeout) func.apply(context, args); | |
}; | |
} | |
function dateFromLocationhash () { | |
if (!location.hash) { | |
return '' | |
} | |
const hshParams = decodeURIComponent(location.hash.replace('#', '')) | |
const match = hshParams.match(/"(\d\d.*)"/) | |
if (!match) { | |
return '' | |
} | |
return match[1] | |
} | |
function textExtractor (parent) { | |
return (selector, firstChild = false) => { | |
const el = parent.querySelector(selector) | |
if (!el) { | |
return '' | |
} | |
if (firstChild) { | |
return el.firstChild.nodeValue.trim() | |
} | |
if (el.tagName === 'META') { | |
return el.content | |
} | |
if (el.tagName === 'TIME') { | |
return el.dateTime.replace(' ', 'T') | |
} | |
return el.innerText | |
} | |
} | |
function endTime (startTimeStr, lengthMinutes = 0) { | |
const start = new Date(startTimeStr) | |
if (lengthMinutes > 0) { | |
const end = new Date(start.getTime() + lengthMinutes * 60000) | |
return end.toISOString() | |
} | |
// 0 length given, use fallback time | |
return startTimeStr.replace(/T.*$/i, `T${FALLBACK_END_TIME}`) | |
} | |
const LENGTH_REGEX = /(Délka|Długość|Length)\s+(\d+)/ | |
function extractLength (parent) { | |
const rows = parent.querySelector('.basic_row_info') | |
if (!rows) { | |
return 0 | |
} | |
const rowsText = rows.innerText | |
const match = rowsText.match(LENGTH_REGEX) | |
if (match) { | |
return parseInt(match[2], 10) | |
} | |
return 0 | |
} | |
function extractData () { | |
const parent = document.querySelector(SEL.parent) | |
if (!parent) { | |
return null | |
} | |
const ex = textExtractor(parent) | |
let dateStart = dateFromLocationhash() | |
if (!dateStart) { | |
dateStart = ex(SEL.startDate) | |
} | |
let address = ex(SEL.address) | |
if (!address) { | |
address = `${ex(SEL.streetAddress)}, ${ex(SEL.addressLocality)}` | |
} | |
const length = extractLength(parent) | |
let dateEnd = ex(SEL.endDate) | |
if (length || !dateEnd) { | |
dateEnd = endTime(dateStart, length) | |
} | |
let description = ex(SEL.description) | |
if (description) { | |
description += '\n\n' | |
} | |
description += location.href | |
const data = { | |
name: ex(SEL.name, true), | |
description: description, | |
venue: ex(SEL.venue), | |
address: address, | |
dateStart: dateStart, | |
dateEnd: dateEnd, | |
} | |
return data | |
} | |
function queryParams(data) { | |
return Object.keys(data).map(function(key) { | |
return [key, data[key]].map(encodeURIComponent).join("="); | |
}).join("&"); | |
} | |
function googleCalendarDate(isoDateStr) { | |
return isoDateStr.replace(/-|:|\.\d\d\d/g, '').toUpperCase() | |
} | |
function googleCalendarUrl(data) { | |
const params = { | |
action: 'TEMPLATE', | |
text: data.name, | |
details: data.description, | |
sprop: 'name:GoOut', | |
dates: `${googleCalendarDate(data.dateStart)}/${googleCalendarDate(data.dateEnd)}`, | |
location: `${data.venue}, ${data.address}`, | |
pli: 1, | |
sfi: 'true' | |
} | |
return `https://www.google.com/calendar/render?${queryParams(params)}` | |
} | |
function appendLink (data) { | |
const a = LINK_EL | |
a.className = 'buttonOval buttonWhite iconfont' | |
a.innerText = 'calendar' | |
a.target = '_blank' | |
a.title = 'Add to Google Calendar' | |
a.href = googleCalendarUrl(data) | |
const parent = document.querySelector(SEL.linkContainer) | |
if (parent && a.parentElement != parent) { | |
parent.prepend(a) | |
} | |
} | |
function mainHandler () { | |
try { | |
const data = extractData() | |
console.log(data) | |
if (data) { | |
appendLink(data) | |
} | |
} catch (e) { | |
console.error(e) | |
} | |
} | |
const debounceMain = debounce(mainHandler, 500) | |
// Initial load: when hash is already set | |
debounceMain() | |
// On date change (not triggered by pushState) | |
window.addEventListener('hashchange', debounceMain) | |
// Monkey-patch pushstate to trigger changes | |
const pushState = window.history.pushState | |
window.history.pushState = function pushStateWrapper () { | |
debounceMain() | |
return pushState.apply(window.history, arguments) | |
} |
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