OpeningHoursLogic.js

function calculateOpeningHours(opening_hours, currentTime) {

    const weekdayNumber = currentTime.weekday();

    let closingTime = undefined
    let openingTime = undefined
    let placeIsOpen = false
    const openingHoursYesterday = opening_hours[weekdayNumber - 1]
    // Closed yesterday?
    if (openingHoursYesterday !== undefined) {
        // Yesterday time still valid?
        closingTime = openingHoursYesterday.close
        openingTime = openingHoursYesterday.open
        placeIsOpen = currentTime.isBetween(openingTime, closingTime)
        if (placeIsOpen) {
            return [openingTime, closingTime, placeIsOpen]
        }
    }

    // Closed today?
    if (opening_hours[weekdayNumber] === undefined) {
        const nextOpenDay = getNextOpenDay(opening_hours, weekdayNumber)
        closingTime = nextOpenDay.close
        openingTime = nextOpenDay.open
        placeIsOpen = currentTime.isBetween(openingTime, closingTime)
        return [openingTime, closingTime, placeIsOpen]
    }

    const openingHoursToday = opening_hours[weekdayNumber]
    closingTime = openingHoursToday.close
    openingTime = openingHoursToday.open
    placeIsOpen = currentTime.isBetween(openingTime, closingTime)

    return [openingTime, closingTime, placeIsOpen];
}

var isServerSide = true
try{
    var dummy = window !== undefined
    isServerSide = false
}catch (e) {
    // Do nothing...
}

if (isServerSide){
  module.exports = { calculateOpeningHours };
}