seconds static method
Formats raw seconds into a human-readable duration (e.g. "1d 2h 3m 4s").
Implementation
static String seconds(num? secs) {
if (secs == null) return "";
if (secs <= 0) return "0s";
final d = (secs / (3600 * 24)).floor();
final h = ((secs % (3600 * 24)) / 3600).floor();
final m = ((secs % 3600) / 60).floor();
final s = (secs % 60).floor();
final parts = <String>[];
if (d > 0) parts.add("${d}d");
if (h > 0 || parts.isNotEmpty) parts.add("${h}h");
if (m > 0 || parts.isNotEmpty) parts.add("${m}m");
parts.add("${s}s");
return parts.join(" ");
}