String durationToString(int time) {
if (time == null || time == 0) {
return '00:00';
}
String second = (time % 60).toInt().toString().padLeft(2, '0');
String minute = (time / 60 % 60).toInt().toString().padLeft(2, '0');
String hour = (time ~/ 3600).toInt().toString().padLeft(2, '0');
if (time < 3600) {
return "$minute:$second";
} else {
return '$hour:$minute:$second';
}
}
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