proxferiado-scriptable-widget.js

const getURL = year => `https://nolaborables.com.ar/api/v2/feriados/${year}`

const months = ['Enero','Febrero','Marzo','Abril','Mayo','Junio','Julio','Agosto','Septiembre','Octubre','Noviembre','Diciembre'];
const days = ['Domingo', 'Lunes', 'Martes', 'Miercoles', 'Jueves', 'Viernes', 'Sabado'];
const dayOfWeek = (day, month, year) => days[new Date(year, month, day).getDay()];

const getYear = () => (new Date()).getFullYear();

const getNextHoliday = function(holidays){
    const now = new Date()
    const today = {
      day: now.getDate(),
      month: now.getMonth() + 1
    };

    let holiday = holidays.find(h =>
      h.mes === today.month && h.dia > today.day || h.mes > today.month
    );

    if (!holiday){
      holiday = holidays[0];
    }

    return holiday;
};

const diffInDays = (date1, date2) => {
  const diffTime = Math.abs(date2 - date1);
  const diffDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24));
  return diffDays;
};

const holidayUrl = getURL(getYear());
const req = new Request(holidayUrl);
const res = await req.loadJSON();
const nxtHolidayData = getNextHoliday(res);

if (config.runsInWidget) {
    const widget = new ListWidget();

    widget.backgroundColor = new Color('3399ff');

    const title = widget.addText("Próximo feriado: ");
    title.textColor = Color.white();
    title.textOpacity = 0.8;
    title.font = new Font("Courier", 16);

    widget.addSpacer(5);

    const holidayName = widget.addText(`${nxtHolidayData.motivo}`)
    holidayName.textColor = Color.white();
    holidayName.textOpacity = 0.8;
    holidayName.font = new Font("Courier", 14);

    widget.addSpacer(5);

    const dateNameText = widget.addText(`${dayOfWeek(nxtHolidayData.dia, nxtHolidayData.mes-1, getYear())}`);
    dateNameText.textColor = Color.white();
    dateNameText.textOpacity = 0.8;
    dateNameText.font = new Font("Courier", 10);

    widget.addSpacer(5);

    const dateText = widget.addText(`${nxtHolidayData.dia}/${nxtHolidayData.mes}/${getYear()}`);
    dateText.textColor = Color.white();
    dateText.textOpacity = 0.8;
    dateText.font = new Font("Courier", 10);

    widget.addSpacer(10);

    const date1 = new Date();
    const date2 = new Date(getYear(), nxtHolidayData.mes-1, nxtHolidayData.dia);
    const tminusText = widget.addText(`Faltan ${diffInDays(date1, date2)} días`)
    tminusText.textColor = Color.white();
    tminusText.textOpacity = 0.8;
    tminusText.font = new Font("Courier", 14);

    Script.setWidget(widget);
    Script.complete();
}