formatSecondsInHhMmSs function
Implementation
String formatSecondsInHhMmSs(int seconds) {
var duration = Duration(seconds: seconds);
// ignore: non_constant_identifier_names
final HH = (duration.inHours).toString().padLeft(2, '0');
final mm = (duration.inMinutes % 60).toString().padLeft(2, '0');
final ss = (duration.inSeconds % 60).toString().padLeft(2, '0');
return (duration.inSeconds >= 3600) ? '$HH:$mm:$ss' : '$mm:$ss';
}