Google Calendar - Next Meetings

script.js

const manager = FileManager.local();
const configPath = manager.joinPath(manager.libraryDirectory(), 'config.json');

function addDate(date, days) {
    const copy = new Date(Number(date));
    copy.setDate(date.getDate() + days);
    return copy;
}
const isToday = (someDate) => {
    const today = new Date()
    return someDate.getDate() == today.getDate() &&
        someDate.getMonth() == today.getMonth() &&
        someDate.getFullYear() == today.getFullYear()
}
const isTomorrow = (someDate) => {
    const tomorrow = new Date(new Date().getFullYear(), new Date().getMonth(), new Date().getDate() + 1)
    return someDate.getDate() == tomorrow.getDate() &&
        someDate.getMonth() == tomorrow.getMonth() &&
        someDate.getFullYear() == tomorrow.getFullYear()
}
function formatDate(date) {
    if(isToday(date)) {
        return 'Heute';
    } else if(isTomorrow(date)) {
        return 'Morgen';
    } else {
        return ('0' + date.getDate()).slice(-2) + '.'
            + ('0' + (date.getMonth()+1)).slice(-2);
    }
}
function formatTime(date) {
    return ('0' + (date.getHours())).slice(-2)
        + ':'
        + ('0' + (date.getMinutes())).slice(-2);
}
function loadConfig() {
    if(manager.fileExists(configPath)) {
        let readData = manager.readString(configPath);
        console.log(readData)
        return readData;
    } else {
        return undefined;
    }
}
function saveConfig(data) {
    console.log("SAVING")
    manager.writeString(configPath, data);
    console.log("SAVED");
    return;
}
async function getCalendarData(identifier) {
    let events =  await CalendarEvent.between(new Date(), addDate(new Date(), 99));
    console.log(events[0].calendar.identifier, identifier)
    events = events.filter((event) => event.calendar.identifier === identifier);
    console.log(events.length);
    events.sort((a,b) => new Date(b.date) - new Date(a.date));
    events = events.splice(0,5);
    return events;
}
async function createWidget(data) {
    let widget = new ListWidget();
    widget.spacing = 5;
    widget.backgroundColor = Color.dynamic(new Color('#ffffff', 0.8), new Color('#000000', 0.8));
    data.forEach(function(rowData) {
        let row = widget.addStack();
        let stockSymbol = row.addText(rowData.title);
        stockSymbol.textColor = Color.dynamic(new Color('#515150'), new Color('#FFFFFF'));
        stockSymbol.font = Font.boldSystemFont(16);

        row.addSpacer();

        let dateRow = row.addStack();
        dateRow.size = new Size(120, 20);

        let symbolDate = dateRow.addText(formatDate(rowData.startDate));
        symbolDate.textColor = Color.dynamic(new Color('#515150'), new Color('#FFFFFF'));
        symbolDate.font = Font.mediumMonospacedSystemFont(16);

        dateRow.addSpacer();

        let symbolTime = dateRow.addText(formatTime(rowData.startDate));
        symbolTime.textColor = Color.dynamic(new Color('#515150'), new Color('#FFFFFF'));
        symbolTime.font = Font.mediumMonospacedSystemFont(16);
    })

    return widget;
}
async function init() {
    let identifier = loadConfig();
    let eventData = await getCalendarData(identifier);
    let widget = await createWidget(eventData);
    
    if (config.runsInWidget) {
        Script.setWidget(widget);
    } else {
        widget.presentMedium();
    }
    
    Script.complete(); 
}

if(loadConfig() !== undefined) {
    init();
} else {
    let calendars = await Calendar.forEvents();
    let alert = new Alert();
    alert.title = "Select Calendar";
    calendars.forEach((calendar) => {
        alert.addAction(calendar.title);
    })
    alert.presentSheet().then(async (selectedElementIndex) => {
        let selectedCalender = calendars[selectedElementIndex];
        saveConfig(selectedCalender.identifier);
        init();
    });
}