Method To get Last Day Of Any Given Month

TimeUtils.kt

fun isLeapYear(year: Int): Boolean {
        return year % 4 == 0
    }

fun getLastDayOfMonth(month: Int,year: Int = 0) : Int {

        when (month) {
            JANUARY-> return 31
            FEBRUARY-> {

                // current time
                val now = Calendar.getInstance()
                now.timeInMillis = System.currentTimeMillis()
                val currentYear= if (year == 0) now.get(Calendar.YEAR) else year
                // last day of FEBRUARY for this year
                val lastDayOfFebruaryInOfTheGivenYear = Calendar.getInstance().run {
                    set(Calendar.YEAR,  currentYear)
                    set(Calendar.MONTH, FEBRUARY)
                    set(Calendar.DAY_OF_MONTH, 28)
                    set(Calendar.HOUR, 11)
                    set(Calendar.MINUTE, 59)
                    set(Calendar.SECOND, 59)
                    set(Calendar.AM_PM, Calendar.PM)
                    timeInMillis
                }

                //chick if the FEBRUARY for this year is passed or not
                val isFebruaryForThisYearPassed = lastDayOfFebruaryInOfTheGivenYear > now.timeInMillis
                //if FEBRUARY for this year has been passed then it's the next year
                val isItLeapYear = if (isFebruaryForThisYearPassed) currentYear else (currentYear + 1)

                return if (isLeapYear(isItLeapYear)) {
                    29
                } else {
                    28
                }
            }
            MARCH-> return 31
            APRIL-> return 30
            MAY-> return 31
            JUNE-> return 30
            JULY-> return 31
            AUGUST-> return 31
            SEPTEMBER-> return 30
            OCTOBER-> return 31
            NOVEMBER-> return 30
            DECEMBER-> return 31
            else -> return 0
        }
    }