in app/logic/Date.scala [45:54]
def formatDuration(duration: Duration): String = {
Seq(
duration.toHours.toInt -> "hour",
duration.toMinutesPart -> "minute",
duration.toSecondsPart -> "second"
).collect {
case (1, unit) => s"1 $unit"
case (value, unit) if value > 1 => s"$value ${unit}s"
}.mkString(", ")
}