Seconds to HH:MM:SS in Kotlin

secondsToDate.kt

data class HoursMinutesSeconds(val hours: Int, val minutes: Int, val seconds: Int)

fun Int.toHoursMinuteSeconds(): HoursMinutesSeconds {
  val hours = this / 3600f
  val fullHours = hours.toInt()

  val minutes = (hours - fullHours) * 60f
  val fullMinutes = minutes.toInt()

  val seconds = (minutes - fullMinutes) * 60f
  val fullSeconds = seconds.toInt()

  return HoursMinutesSeconds(fullHours, fullMinutes, fullSeconds)
}

val result = 8_274.toHoursMinuteSeconds()
assert(result.seconds == 54)
assert(result.minutes == 17)
assert(result.hours == 2)