Conver to ToU pattern

gistfile1.txt

// Get day of the week (7 = Sunday, 1 = Monday, etc.)
function getDayAsNumber(day) {
    return day === 0 ? 7 : day;
}

const values = msg.payload.schedule
    .filter((e) => e.activity != 0)
    .reduce((total, e) => {
        const toTimeString = (date) => {
            const HH = date.getHours().toString().padStart(2, '0')
            const mm = date.getMinutes().toString().padStart(2, '0')
            return `${HH}:${mm}`
        }

        const touPattern = (start, end, charge) => {
            let pattern = toTimeString(start)
            pattern += '-'
            pattern += toTimeString(end)
            pattern += '/'
            pattern += getDayAsNumber(start.getDay());
            pattern += '/'
            pattern += charge
            return pattern
        }

        const startDate = new Date(e.start)
        const endDate = new Date(startDate.getTime() + (e.duration - 1) * 60000)
        const charge = e.activity == 1 ? '+' : '-'
        if (startDate.getDay() == endDate.getDay()) {
            total.push(touPattern(startDate, endDate, charge))
        } else {
            const endDateDay1 = new Date(startDate)
            endDateDay1.setHours(23)
            endDateDay1.setMinutes(59)
            total.push(touPattern(startDate, endDateDay1, charge))

            const startDateDay2 = new Date(endDate)
            startDateDay2.setHours(0)
            startDateDay2.setMinutes(0)
            total.push(touPattern(startDateDay2, endDate, charge))
        }
        return total
    }, [])

msg.payload = values.join('\n')
return msg;