Adds a 'Download Calendar (.ics)' button to the Workday popup list and generates ICS file with recurring events
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// ==UserScript==
// @name UBC Workday Calendar Generator
// @namespace http://tampermonkey.net/
// @version 1.6
// @description Adds a 'Download Calendar (.ics)' button to the Workday popup list and generates ICS file with recurring events
// @match *://*.myworkday.com/ubc*
// @author TU
// @license TU
// @grant none
// ==/UserScript==
(function() {
'use strict';
const timeZone = 'America/Vancouver'; // Kelowna's timezone
function formatToICS(event, courseNameCal, courseTypeCal, uniqueId) {
const crlf = '\r\n';
function convertTime(time) {
const match = time.match(/(\d+):(\d+)\s*(a\.m\.|p\.m\.)/i);
if (!match) return '';
let [_, hours, minutes, period] = match;
let hours24 = parseInt(hours, 10);
if (period.toLowerCase() === 'p.m.' && hours24 !== 12) {
hours24 += 12;
} else if (period.toLowerCase() === 'a.m.' && hours24 === 12) {
hours24 = 0;
}
return `${hours24.toString().padStart(2, '0')}${minutes.padStart(2, '0')}00`;
}
const startTime = convertTime(event.startTime);
const endTime = convertTime(event.endTime);
const dtstamp = new Date().toISOString().replace(/[-:]/g, '').split('.')[0] + 'Z'; // UTC format
const uid = `${uniqueId}-${event.startDate}@tupreti.com`; // Unique UID
const startDate = event.startDate.replace(/-/g, ''); // Format to YYYYMMDD
// Construct RRULE for recurring events
const dayMap = { Mon: 'MO', Tue: 'TU', Wed: 'WE', Thu: 'TH', Fri: 'FR', Sat: 'SA', Sun: 'SU' };
const days = event.days.split(' ').map(day => dayMap[day]).join(',');
const frequency = `FREQ=WEEKLY;BYDAY=${days}`;
const recurrenceRule = event.alternateWeeks
? `${frequency};INTERVAL=2;UNTIL=${event.endDate.replace(/-/g, '')}T235959Z`
: `${frequency};UNTIL=${event.endDate.replace(/-/g, '')}T235959Z`;
// Construct the ICS event
const icsEvent = `BEGIN:VEVENT${crlf}` +
`UID:${uid}${crlf}` +
`DTSTAMP:${dtstamp}${crlf}` +
`DTSTART;TZID=${timeZone}:${startDate}T${startTime}${crlf}` +
`DTEND;TZID=${timeZone}:${startDate}T${endTime}${crlf}` +
`RRULE:${recurrenceRule}${crlf}` +
`SUMMARY:${courseNameCal || 'No Title'}${crlf}` +
`DESCRIPTION:${courseTypeCal || 'No Description'}${crlf}` +
`LOCATION:${event.location || 'No Location'}${crlf}` +
`END:VEVENT`;
return icsEvent;
}
function generateICSFile(events) {
const crlf = '\r\n';
const icsContent = `BEGIN:VCALENDAR${crlf}` +
`VERSION:2.0${crlf}` +
`PRODID:-//Tanish Upreti//UBC Workday Calendar Generator//EN${crlf}` +
`CALSCALE:GREGORIAN${crlf}` +
`METHOD:PUBLISH${crlf}` +
`X-WR-TIMEZONE:${timeZone}${crlf}` +
events.join(crlf) +
crlf + `END:VCALENDAR`;
const blob = new Blob([icsContent], { type: 'text/calendar' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = 'UBC Course Schedule.ics';
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
}
function processMeetingPattern(meetingPattern) {
let [dateRange, daysAndWeeks, timeRange, location] = meetingPattern.split(" | ");
let [startDate, endDate] = dateRange.split(" - ");
let alternateWeeks = daysAndWeeks.includes("(Alternate weeks)");
let days = alternateWeeks ? daysAndWeeks.replace("(Alternate weeks)", "").trim() : daysAndWeeks.trim();
let [startTime, endTime] = timeRange.split(" - ");
return {
startDate,
endDate,
days,
alternateWeeks,
startTime,
endTime,
location
};
}
function extractAllCourseNamesAndGenerateICS() {
console.log("ICS generation triggered");
requestIdleCallback(() => {
try {
const divs = document.querySelectorAll('div[data-automation-label]');
const courseNames = [];
divs.forEach(div => {
const courseName = div.getAttribute('data-automation-label');
if (courseName) {
courseNames.push(courseName);
}
});
const pattern = /\b[A-Z]{3,4}_O \d{3}-[A-Z0-9]{1,4} - .+/;
const events = [];
for (let i = 0; i < courseNames.length; i++) {
const currentItem = courseNames[i];
if (pattern.test(currentItem)) {
const course = currentItem;
const instructionalFormat = courseNames[i + 1];
let j = i + 3;
while (j < courseNames.length && courseNames[j].includes('|')) {
const meetingPatterns = courseNames[j];
const parsed = processMeetingPattern(meetingPatterns);
const event = formatToICS(parsed, course, instructionalFormat, i);
events.push(event);
j++;
}
i = j - 1;
}
}
if (events.length > 0) {
generateICSFile(events);
} else {
console.log("No events found to generate.");
}
} catch (error) {
console.error("Error while extracting course names and generating ICS:", error);
}
});
}
function addCalendarDownloadButton() {
const selectedTab = document.querySelector('li[data-automation-id="selectedTab"]');
if (selectedTab && selectedTab.querySelector('div[data-automation-id="tabLabel"]').textContent.trim() === 'Registration & Courses') {
const popups = document.querySelectorAll('div[data-automation-id="workletPopup"]');
popups.forEach(popup => {
const menuList = popup.querySelector('ul[data-automation-id="menuList"]');
if (menuList && !menuList.querySelector('div[data-automation-id="calendarDownloadButton"]')) {
console.log("Menu list detected, adding 'Download Calendar (.ics)' button.");
const existingListItem = menuList.querySelector('li');
if (existingListItem) {
const newListItem = existingListItem.cloneNode(true);
const newButtonDiv = newListItem.querySelector('div').cloneNode(true);
newListItem.replaceChild(newButtonDiv, newListItem.querySelector('div'));
newButtonDiv.textContent = 'Download Calendar (.ics)';
newButtonDiv.setAttribute('data-automation-id', 'calendarDownloadButton');
newButtonDiv.setAttribute('aria-label', 'Download Calendar');
newButtonDiv.addEventListener('click', extractAllCourseNamesAndGenerateICS);
menuList.appendChild(newListItem);
}
}
});
}
}
const observer = new MutationObserver(() => {
addCalendarDownloadButton();
});
observer.observe(document, { childList: true, subtree: true });
})();