Source Code added

mobile/lib/utils/datetime_helpers.dart

@@ -0,0 +1,19 @@
+const int _maxMillisecondsSinceEpoch = 8640000000000000; // 275760-09-13
+const int _minMillisecondsSinceEpoch = -62135596800000; // 0001-01-01
+
+DateTime? tryFromSecondsSinceEpoch(int? secondsSinceEpoch, {bool isUtc = false}) {
+  if (secondsSinceEpoch == null) {
+    return null;
+  }
+
+  final milliSeconds = secondsSinceEpoch * 1000;
+  if (milliSeconds < _minMillisecondsSinceEpoch || milliSeconds > _maxMillisecondsSinceEpoch) {
+    return null;
+  }
+
+  try {
+    return DateTime.fromMillisecondsSinceEpoch(milliSeconds, isUtc: isUtc);
+  } catch (e) {
+    return null;
+  }
+}